fix PMIC_INT_L gpio conflicting with I2C8_SCL in RockPro64 #10
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Rockchip's rk3328 evaluation board has 3 mmc controllers for sdio/sdmmc/emmc, let's enable them. Signed-off-by: Liang Chen <cl@rock-chips.com> Signed-off-by: Heiko Stuebner <heiko@sntech.de>
RK3328 Evaluation Board use rk805 pmic, and one of the DCDCs in rk805 is for cpu regulator, assign the cpu regulator, so the cpufreq can work fine. Signed-off-by: Liang Chen <cl@rock-chips.com> Signed-off-by: Heiko Stuebner <heiko@sntech.de>
The ROCK64 is a credit card size 4K60P HDR Media Board Computer using the Rockchip RK3328 Quad-Core ARM Cortex A53 64-Bit Processor and supporting up to 4GB 1600MHz LPDDR3 memory. It provides eMMC module socket, MicroSD Card slot, Pi-2 Bus, Pi-P5+ Bus, USB 3.0 and many others peripheral devices interface for makers to integrate with sensors and devices. The devicetree currently supports basic peripherals, with more to be added later on. Signed-off-by: Heiko Stuebner <heiko@sntech.de>
RK3328 has one USB 3.0 OTG controller which uses DWC_USB3 core's general architecture. It can act as static xHCI host controller, static device controller, USB 3.0/2.0 OTG basing on ID of USB3.0 PHY. Signed-off-by: William Wu <william.wu@rock-chips.com>
Rockchip's RK3328 evaluation board has one USB 3.0 OTG controller, we enable it and set it act as static xHCI host controller to support USB 3.0 HOST on RK3328 evaluation board. Signed-off-by: William Wu <william.wu@rock-chips.com>
This reverts commit f347996.
Change-Id: I3716dc08b56bd7ec946e1ad3044f10f88a8be11f
Change-Id: I303e2dd39c83b8cd8725468799853c7510648449
Change-Id: I790255cc8d308f163b427c086968f36381dba978
Change-Id: I87a364e95d937c354e06eb41fead43d8d5cb0b4a
Change-Id: I407c406f3945880cd00f84f4a86503433e1faa32
Add support for f2fs and it's dependency crc32 to rock64. This patch may or may not need to be included as well due to this bug https://bugs.debian.org/819725 A official patch was added by Debian https://salsa.debian.org/kernel-team/linux/blob/master/debian/patches/bugfix/all/fs-add-module_softdep-declarations-for-hard-coded-cr.patch
…uild problems Change-Id: Idce2849f06096247a2983e6afd0cce9c2510aa74
Change-Id: I4a62413deb3227569c6c569a2f19dd2df67d0f51
Change-Id: I7298f54ca34f26b408d428178db649c328612d73
Change-Id: I2f57e1b8c25adc5bf23572d710ec426d4c6006c5
Change-Id: I725e0b5404f80e16d035ecf9eeab8eee854052ee
…k64#7) This changes crc, crc32, and f2fs to be compiled into the kernel instead of as module.
Change-Id: Id419addac5ed55ad7fbbf18783ba19d5278e945f
martinayotte
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in armbian/build
Dec 5, 2018
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@martinayotte haha ayufan-rock64/linux-u-boot@274224d I didn't check the kernel... |
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Yes ! I saw the chinese note too, and google translate it as "Note: PMU terminates GPIO1_C5 change to this point"... I've looked at Firefly schematic and it was GPIO1_C5, but not on RockPro64. |
ayufan
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Dec 30, 2018
Commit 9b6f7e1 ("mm: rework memcg kernel stack accounting") will result in fork failing if allocating a kernel stack for a task in dup_task_struct exceeds the kernel memory allowance for that cgroup. Unfortunately, it also results in a crash. This is due to the code jumping to free_stack and calling free_thread_stack when the memcg kernel stack charge fails, but without tsk->stack pointing at the freshly allocated stack. This in turn results in the vfree_atomic in free_thread_stack oopsing with a backtrace like this: #5 [ffffc900244efc88] die at ffffffff8101f0ab #6 [ffffc900244efcb8] do_general_protection at ffffffff8101cb86 #7 [ffffc900244efce0] general_protection at ffffffff818ff082 [exception RIP: llist_add_batch+7] RIP: ffffffff8150d487 RSP: ffffc900244efd98 RFLAGS: 00010282 RAX: 0000000000000000 RBX: ffff88085ef55980 RCX: 0000000000000000 RDX: ffff88085ef55980 RSI: 343834343531203a RDI: 343834343531203a RBP: ffffc900244efd98 R8: 0000000000000001 R9: ffff8808578c3600 R10: 0000000000000000 R11: 0000000000000001 R12: ffff88029f6c21c0 R13: 0000000000000286 R14: ffff880147759b00 R15: 0000000000000000 ORIG_RAX: ffffffffffffffff CS: 0010 SS: 0018 #8 [ffffc900244efda0] vfree_atomic at ffffffff811df2c7 #9 [ffffc900244efdb8] copy_process at ffffffff81086e37 #10 [ffffc900244efe98] _do_fork at ffffffff810884e0 #11 [ffffc900244eff10] sys_vfork at ffffffff810887ff #12 [ffffc900244eff20] do_syscall_64 at ffffffff81002a43 RIP: 000000000049b948 RSP: 00007ffcdb307830 RFLAGS: 00000246 RAX: ffffffffffffffda RBX: 0000000000896030 RCX: 000000000049b948 RDX: 0000000000000000 RSI: 00007ffcdb307790 RDI: 00000000005d7421 RBP: 000000000067370f R8: 00007ffcdb3077b0 R9: 000000000001ed00 R10: 0000000000000008 R11: 0000000000000246 R12: 0000000000000040 R13: 000000000000000f R14: 0000000000000000 R15: 000000000088d018 ORIG_RAX: 000000000000003a CS: 0033 SS: 002b The simplest fix is to assign tsk->stack right where it is allocated. Link: http://lkml.kernel.org/r/20181214231726.7ee4843c@imladris.surriel.com Fixes: 9b6f7e1 ("mm: rework memcg kernel stack accounting") Signed-off-by: Rik van Riel <riel@surriel.com> Acked-by: Roman Gushchin <guro@fb.com> Acked-by: Michal Hocko <mhocko@suse.com> Cc: Shakeel Butt <shakeelb@google.com> Cc: Johannes Weiner <hannes@cmpxchg.org> Cc: Tejun Heo <tj@kernel.org> Cc: <stable@vger.kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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This is picked in latest rebase. |
nuumio
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Dec 31, 2018
The *_frag_reasm() functions are susceptible to miscalculating the byte count of packet fragments in case the truesize of a head buffer changes. The truesize member may be changed by the call to skb_unclone(), leaving the fragment memory limit counter unbalanced even if all fragments are processed. This miscalculation goes unnoticed as long as the network namespace which holds the counter is not destroyed. Should an attempt be made to destroy a network namespace that holds an unbalanced fragment memory limit counter the cleanup of the namespace never finishes. The thread handling the cleanup gets stuck in inet_frags_exit_net() waiting for the percpu counter to reach zero. The thread is usually in running state with a stacktrace similar to: PID: 1073 TASK: ffff880626711440 CPU: 1 COMMAND: "kworker/u48:4" ayufan-rock64#5 [ffff880621563d48] _raw_spin_lock at ffffffff815f5480 ayufan-rock64#6 [ffff880621563d48] inet_evict_bucket at ffffffff8158020b ayufan-rock64#7 [ffff880621563d80] inet_frags_exit_net at ffffffff8158051c ayufan-rock64#8 [ffff880621563db0] ops_exit_list at ffffffff814f5856 ayufan-rock64#9 [ffff880621563dd8] cleanup_net at ffffffff814f67c0 ayufan-rock64#10 [ffff880621563e38] process_one_work at ffffffff81096f14 It is not possible to create new network namespaces, and processes that call unshare() end up being stuck in uninterruptible sleep state waiting to acquire the net_mutex. The bug was observed in the IPv6 netfilter code by Per Sundstrom. I thank him for his analysis of the problem. The parts of this patch that apply to IPv4 and IPv6 fragment reassembly are preemptive measures. Signed-off-by: Jiri Wiesner <jwiesner@suse.com> Reported-by: Per Sundstrom <per.sundstrom@redqube.se> Acked-by: Peter Oskolkov <posk@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
ayufan
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Oct 2, 2019
Revert the commit bd293d0. The proper fix has been made available with commit d0a255e ("loop: set PF_MEMALLOC_NOIO for the worker thread"). Note that the fix offered by commit bd293d0 doesn't really prevent the deadlock from occuring - if we look at the stacktrace reported by Junxiao Bi, we see that it hangs in bit_wait_io and not on the mutex - i.e. it has already successfully taken the mutex. Changing the mutex from mutex_lock to mutex_trylock won't help with deadlocks that happen afterwards. PID: 474 TASK: ffff8813e11f4600 CPU: 10 COMMAND: "kswapd0" #0 [ffff8813dedfb938] __schedule at ffffffff8173f405 #1 [ffff8813dedfb990] schedule at ffffffff8173fa27 #2 [ffff8813dedfb9b0] schedule_timeout at ffffffff81742fec #3 [ffff8813dedfba60] io_schedule_timeout at ffffffff8173f186 #4 [ffff8813dedfbaa0] bit_wait_io at ffffffff8174034f #5 [ffff8813dedfbac0] __wait_on_bit at ffffffff8173fec8 #6 [ffff8813dedfbb10] out_of_line_wait_on_bit at ffffffff8173ff81 #7 [ffff8813dedfbb90] __make_buffer_clean at ffffffffa038736f [dm_bufio] #8 [ffff8813dedfbbb0] __try_evict_buffer at ffffffffa0387bb8 [dm_bufio] #9 [ffff8813dedfbbd0] dm_bufio_shrink_scan at ffffffffa0387cc3 [dm_bufio] #10 [ffff8813dedfbc40] shrink_slab at ffffffff811a87ce #11 [ffff8813dedfbd30] shrink_zone at ffffffff811ad778 #12 [ffff8813dedfbdc0] kswapd at ffffffff811ae92f #13 [ffff8813dedfbec0] kthread at ffffffff810a8428 #14 [ffff8813dedfbf50] ret_from_fork at ffffffff81745242 Signed-off-by: Mikulas Patocka <mpatocka@redhat.com> Cc: stable@vger.kernel.org Fixes: bd293d0 ("dm bufio: fix deadlock with loop device") Depends-on: d0a255e ("loop: set PF_MEMALLOC_NOIO for the worker thread") Signed-off-by: Mike Snitzer <snitzer@redhat.com>
gustavokch
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Jul 4, 2023
The kernel IRQ system needs the irq affinity notifier to be clear before attempting to free the irq, see WARN_ON log below. On a normal driver unload we don't have this issue since we do the complete cleanup of the irq resources. To fix this, put the important resources cleanup in a helper function and use it in both normal driver unload and shutdown flows. [ 4497.498434] ------------[ cut here ]------------ [ 4497.498726] WARNING: CPU: 0 PID: 9 at kernel/irq/manage.c:2034 free_irq+0x295/0x340 [ 4497.499193] Modules linked in: [ 4497.499386] CPU: 0 PID: 9 Comm: kworker/0:1 Tainted: G W 6.4.0-rc4+ ayufan-rock64#10 [ 4497.499876] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.16.2-1.fc38 04/01/2014 [ 4497.500518] Workqueue: events do_poweroff [ 4497.500849] RIP: 0010:free_irq+0x295/0x340 [ 4497.501132] Code: 85 c0 0f 84 1d ff ff ff 48 89 ef ff d0 0f 1f 00 e9 10 ff ff ff 0f 0b e9 72 ff ff ff 49 8d 7f 28 ff d0 0f 1f 00 e9 df fd ff ff <0f> 0b 48 c7 80 c0 008 [ 4497.502269] RSP: 0018:ffffc90000053da0 EFLAGS: 00010282 [ 4497.502589] RAX: ffff888100949600 RBX: ffff88810330b948 RCX: 0000000000000000 [ 4497.503035] RDX: ffff888100949600 RSI: ffff888100400490 RDI: 0000000000000023 [ 4497.503472] RBP: ffff88810330c7e0 R08: ffff8881004005d0 R09: ffffffff8273a260 [ 4497.503923] R10: 0000000000000000 R11: 0000000000000000 R12: ffff8881009ae000 [ 4497.504359] R13: ffff8881009ae148 R14: 0000000000000000 R15: ffff888100949600 [ 4497.504804] FS: 0000000000000000(0000) GS:ffff88813bc00000(0000) knlGS:0000000000000000 [ 4497.505302] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 4497.505671] CR2: 00007fce98806298 CR3: 000000000262e005 CR4: 0000000000370ef0 [ 4497.506104] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 4497.506540] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 4497.507002] Call Trace: [ 4497.507158] <TASK> [ 4497.507299] ? free_irq+0x295/0x340 [ 4497.507522] ? __warn+0x7c/0x130 [ 4497.507740] ? free_irq+0x295/0x340 [ 4497.507963] ? report_bug+0x171/0x1a0 [ 4497.508197] ? handle_bug+0x3c/0x70 [ 4497.508417] ? exc_invalid_op+0x17/0x70 [ 4497.508662] ? asm_exc_invalid_op+0x1a/0x20 [ 4497.508926] ? free_irq+0x295/0x340 [ 4497.509146] mlx5_irq_pool_free_irqs+0x48/0x90 [ 4497.509421] mlx5_irq_table_free_irqs+0x38/0x50 [ 4497.509714] mlx5_core_eq_free_irqs+0x27/0x40 [ 4497.509984] shutdown+0x7b/0x100 [ 4497.510184] pci_device_shutdown+0x30/0x60 [ 4497.510440] device_shutdown+0x14d/0x240 [ 4497.510698] kernel_power_off+0x30/0x70 [ 4497.510938] process_one_work+0x1e6/0x3e0 [ 4497.511183] worker_thread+0x49/0x3b0 [ 4497.511407] ? __pfx_worker_thread+0x10/0x10 [ 4497.511679] kthread+0xe0/0x110 [ 4497.511879] ? __pfx_kthread+0x10/0x10 [ 4497.512114] ret_from_fork+0x29/0x50 [ 4497.512342] </TASK> Fixes: 9c2d080 ("net/mlx5: Free irqs only on shutdown callback") Signed-off-by: Saeed Mahameed <saeedm@nvidia.com> Reviewed-by: Shay Drory <shayd@nvidia.com>
ayufan
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Nov 20, 2023
KMSAN reported the following uninit-value access issue: ===================================================== BUG: KMSAN: uninit-value in ppp_sync_input drivers/net/ppp/ppp_synctty.c:690 [inline] BUG: KMSAN: uninit-value in ppp_sync_receive+0xdc9/0xe70 drivers/net/ppp/ppp_synctty.c:334 ppp_sync_input drivers/net/ppp/ppp_synctty.c:690 [inline] ppp_sync_receive+0xdc9/0xe70 drivers/net/ppp/ppp_synctty.c:334 tiocsti+0x328/0x450 drivers/tty/tty_io.c:2295 tty_ioctl+0x808/0x1920 drivers/tty/tty_io.c:2694 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:871 [inline] __se_sys_ioctl+0x211/0x400 fs/ioctl.c:857 __x64_sys_ioctl+0x97/0xe0 fs/ioctl.c:857 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x44/0x110 arch/x86/entry/common.c:82 entry_SYSCALL_64_after_hwframe+0x63/0x6b Uninit was created at: __alloc_pages+0x75d/0xe80 mm/page_alloc.c:4591 __alloc_pages_node include/linux/gfp.h:238 [inline] alloc_pages_node include/linux/gfp.h:261 [inline] __page_frag_cache_refill+0x9a/0x2c0 mm/page_alloc.c:4691 page_frag_alloc_align+0x91/0x5d0 mm/page_alloc.c:4722 page_frag_alloc include/linux/gfp.h:322 [inline] __netdev_alloc_skb+0x215/0x6d0 net/core/skbuff.c:728 netdev_alloc_skb include/linux/skbuff.h:3225 [inline] dev_alloc_skb include/linux/skbuff.h:3238 [inline] ppp_sync_input drivers/net/ppp/ppp_synctty.c:669 [inline] ppp_sync_receive+0x237/0xe70 drivers/net/ppp/ppp_synctty.c:334 tiocsti+0x328/0x450 drivers/tty/tty_io.c:2295 tty_ioctl+0x808/0x1920 drivers/tty/tty_io.c:2694 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:871 [inline] __se_sys_ioctl+0x211/0x400 fs/ioctl.c:857 __x64_sys_ioctl+0x97/0xe0 fs/ioctl.c:857 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x44/0x110 arch/x86/entry/common.c:82 entry_SYSCALL_64_after_hwframe+0x63/0x6b CPU: 0 PID: 12950 Comm: syz-executor.1 Not tainted 6.6.0-14500-g1c41041124bd #10 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.16.2-1.fc38 04/01/2014 ===================================================== ppp_sync_input() checks the first 2 bytes of the data are PPP_ALLSTATIONS and PPP_UI. However, if the data length is 1 and the first byte is PPP_ALLSTATIONS, an access to an uninitialized value occurs when checking PPP_UI. This patch resolves this issue by checking the data length. Fixes: 1da177e ("Linux-2.6.12-rc2") Signed-off-by: Shigeru Yoshida <syoshida@redhat.com> Reviewed-by: Simon Horman <horms@kernel.org> Signed-off-by: David S. Miller <davem@davemloft.net>
ayufan
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Nov 20, 2023
KMSAN reported the following kernel-infoleak issue: ===================================================== BUG: KMSAN: kernel-infoleak in instrument_copy_to_user include/linux/instrumented.h:114 [inline] BUG: KMSAN: kernel-infoleak in copy_to_user_iter lib/iov_iter.c:24 [inline] BUG: KMSAN: kernel-infoleak in iterate_ubuf include/linux/iov_iter.h:29 [inline] BUG: KMSAN: kernel-infoleak in iterate_and_advance2 include/linux/iov_iter.h:245 [inline] BUG: KMSAN: kernel-infoleak in iterate_and_advance include/linux/iov_iter.h:271 [inline] BUG: KMSAN: kernel-infoleak in _copy_to_iter+0x4ec/0x2bc0 lib/iov_iter.c:186 instrument_copy_to_user include/linux/instrumented.h:114 [inline] copy_to_user_iter lib/iov_iter.c:24 [inline] iterate_ubuf include/linux/iov_iter.h:29 [inline] iterate_and_advance2 include/linux/iov_iter.h:245 [inline] iterate_and_advance include/linux/iov_iter.h:271 [inline] _copy_to_iter+0x4ec/0x2bc0 lib/iov_iter.c:186 copy_to_iter include/linux/uio.h:197 [inline] simple_copy_to_iter net/core/datagram.c:532 [inline] __skb_datagram_iter.5+0x148/0xe30 net/core/datagram.c:420 skb_copy_datagram_iter+0x52/0x210 net/core/datagram.c:546 skb_copy_datagram_msg include/linux/skbuff.h:3960 [inline] netlink_recvmsg+0x43d/0x1630 net/netlink/af_netlink.c:1967 sock_recvmsg_nosec net/socket.c:1044 [inline] sock_recvmsg net/socket.c:1066 [inline] __sys_recvfrom+0x476/0x860 net/socket.c:2246 __do_sys_recvfrom net/socket.c:2264 [inline] __se_sys_recvfrom net/socket.c:2260 [inline] __x64_sys_recvfrom+0x130/0x200 net/socket.c:2260 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x44/0x110 arch/x86/entry/common.c:82 entry_SYSCALL_64_after_hwframe+0x63/0x6b Uninit was created at: slab_post_alloc_hook+0x103/0x9e0 mm/slab.h:768 slab_alloc_node mm/slub.c:3478 [inline] kmem_cache_alloc_node+0x5f7/0xb50 mm/slub.c:3523 kmalloc_reserve+0x13c/0x4a0 net/core/skbuff.c:560 __alloc_skb+0x2fd/0x770 net/core/skbuff.c:651 alloc_skb include/linux/skbuff.h:1286 [inline] tipc_tlv_alloc net/tipc/netlink_compat.c:156 [inline] tipc_get_err_tlv+0x90/0x5d0 net/tipc/netlink_compat.c:170 tipc_nl_compat_recv+0x1042/0x15d0 net/tipc/netlink_compat.c:1324 genl_family_rcv_msg_doit net/netlink/genetlink.c:972 [inline] genl_family_rcv_msg net/netlink/genetlink.c:1052 [inline] genl_rcv_msg+0x1220/0x12c0 net/netlink/genetlink.c:1067 netlink_rcv_skb+0x4a4/0x6a0 net/netlink/af_netlink.c:2545 genl_rcv+0x41/0x60 net/netlink/genetlink.c:1076 netlink_unicast_kernel net/netlink/af_netlink.c:1342 [inline] netlink_unicast+0xf4b/0x1230 net/netlink/af_netlink.c:1368 netlink_sendmsg+0x1242/0x1420 net/netlink/af_netlink.c:1910 sock_sendmsg_nosec net/socket.c:730 [inline] __sock_sendmsg net/socket.c:745 [inline] ____sys_sendmsg+0x997/0xd60 net/socket.c:2588 ___sys_sendmsg+0x271/0x3b0 net/socket.c:2642 __sys_sendmsg net/socket.c:2671 [inline] __do_sys_sendmsg net/socket.c:2680 [inline] __se_sys_sendmsg net/socket.c:2678 [inline] __x64_sys_sendmsg+0x2fa/0x4a0 net/socket.c:2678 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x44/0x110 arch/x86/entry/common.c:82 entry_SYSCALL_64_after_hwframe+0x63/0x6b Bytes 34-35 of 36 are uninitialized Memory access of size 36 starts at ffff88802d464a00 Data copied to user address 00007ff55033c0a0 CPU: 0 PID: 30322 Comm: syz-executor.0 Not tainted 6.6.0-14500-g1c41041124bd #10 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.16.2-1.fc38 04/01/2014 ===================================================== tipc_add_tlv() puts TLV descriptor and value onto `skb`. This size is calculated with TLV_SPACE() macro. It adds the size of struct tlv_desc and the length of TLV value passed as an argument, and aligns the result to a multiple of TLV_ALIGNTO, i.e., a multiple of 4 bytes. If the size of struct tlv_desc plus the length of TLV value is not aligned, the current implementation leaves the remaining bytes uninitialized. This is the cause of the above kernel-infoleak issue. This patch resolves this issue by clearing data up to an aligned size. Fixes: d0796d1 ("tipc: convert legacy nl bearer dump to nl compat") Signed-off-by: Shigeru Yoshida <syoshida@redhat.com> Reviewed-by: Simon Horman <horms@kernel.org> Signed-off-by: David S. Miller <davem@davemloft.net>
ayufan
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Nov 20, 2023
This allows it to break the following circular locking dependency. Aug 10 07:01:29 dg1test kernel: ====================================================== Aug 10 07:01:29 dg1test kernel: WARNING: possible circular locking dependency detected Aug 10 07:01:29 dg1test kernel: 6.4.0-rc7+ #10 Not tainted Aug 10 07:01:29 dg1test kernel: ------------------------------------------------------ Aug 10 07:01:29 dg1test kernel: wireplumber/2236 is trying to acquire lock: Aug 10 07:01:29 dg1test kernel: ffff8fca5320da18 (&fctx->lock){-...}-{2:2}, at: nouveau_fence_wait_uevent_handler+0x2b/0x100 [nouveau] Aug 10 07:01:29 dg1test kernel: but task is already holding lock: Aug 10 07:01:29 dg1test kernel: ffff8fca41208610 (&event->list_lock#2){-...}-{2:2}, at: nvkm_event_ntfy+0x50/0xf0 [nouveau] Aug 10 07:01:29 dg1test kernel: which lock already depends on the new lock. Aug 10 07:01:29 dg1test kernel: the existing dependency chain (in reverse order) is: Aug 10 07:01:29 dg1test kernel: -> #3 (&event->list_lock#2){-...}-{2:2}: Aug 10 07:01:29 dg1test kernel: _raw_spin_lock_irqsave+0x4b/0x70 Aug 10 07:01:29 dg1test kernel: nvkm_event_ntfy+0x50/0xf0 [nouveau] Aug 10 07:01:29 dg1test kernel: ga100_fifo_nonstall_intr+0x24/0x30 [nouveau] Aug 10 07:01:29 dg1test kernel: nvkm_intr+0x12c/0x240 [nouveau] Aug 10 07:01:29 dg1test kernel: __handle_irq_event_percpu+0x88/0x240 Aug 10 07:01:29 dg1test kernel: handle_irq_event+0x38/0x80 Aug 10 07:01:29 dg1test kernel: handle_edge_irq+0xa3/0x240 Aug 10 07:01:29 dg1test kernel: __common_interrupt+0x72/0x160 Aug 10 07:01:29 dg1test kernel: common_interrupt+0x60/0xe0 Aug 10 07:01:29 dg1test kernel: asm_common_interrupt+0x26/0x40 Aug 10 07:01:29 dg1test kernel: -> #2 (&device->intr.lock){-...}-{2:2}: Aug 10 07:01:29 dg1test kernel: _raw_spin_lock_irqsave+0x4b/0x70 Aug 10 07:01:29 dg1test kernel: nvkm_inth_allow+0x2c/0x80 [nouveau] Aug 10 07:01:29 dg1test kernel: nvkm_event_ntfy_state+0x181/0x250 [nouveau] Aug 10 07:01:29 dg1test kernel: nvkm_event_ntfy_allow+0x63/0xd0 [nouveau] Aug 10 07:01:29 dg1test kernel: nvkm_uevent_mthd+0x4d/0x70 [nouveau] Aug 10 07:01:29 dg1test kernel: nvkm_ioctl+0x10b/0x250 [nouveau] Aug 10 07:01:29 dg1test kernel: nvif_object_mthd+0xa8/0x1f0 [nouveau] Aug 10 07:01:29 dg1test kernel: nvif_event_allow+0x2a/0xa0 [nouveau] Aug 10 07:01:29 dg1test kernel: nouveau_fence_enable_signaling+0x78/0x80 [nouveau] Aug 10 07:01:29 dg1test kernel: __dma_fence_enable_signaling+0x5e/0x100 Aug 10 07:01:29 dg1test kernel: dma_fence_add_callback+0x4b/0xd0 Aug 10 07:01:29 dg1test kernel: nouveau_cli_work_queue+0xae/0x110 [nouveau] Aug 10 07:01:29 dg1test kernel: nouveau_gem_object_close+0x1d1/0x2a0 [nouveau] Aug 10 07:01:29 dg1test kernel: drm_gem_handle_delete+0x70/0xe0 [drm] Aug 10 07:01:29 dg1test kernel: drm_ioctl_kernel+0xa5/0x150 [drm] Aug 10 07:01:29 dg1test kernel: drm_ioctl+0x256/0x490 [drm] Aug 10 07:01:29 dg1test kernel: nouveau_drm_ioctl+0x5a/0xb0 [nouveau] Aug 10 07:01:29 dg1test kernel: __x64_sys_ioctl+0x91/0xd0 Aug 10 07:01:29 dg1test kernel: do_syscall_64+0x3c/0x90 Aug 10 07:01:29 dg1test kernel: entry_SYSCALL_64_after_hwframe+0x72/0xdc Aug 10 07:01:29 dg1test kernel: -> #1 (&event->refs_lock#4){....}-{2:2}: Aug 10 07:01:29 dg1test kernel: _raw_spin_lock_irqsave+0x4b/0x70 Aug 10 07:01:29 dg1test kernel: nvkm_event_ntfy_state+0x37/0x250 [nouveau] Aug 10 07:01:29 dg1test kernel: nvkm_event_ntfy_allow+0x63/0xd0 [nouveau] Aug 10 07:01:29 dg1test kernel: nvkm_uevent_mthd+0x4d/0x70 [nouveau] Aug 10 07:01:29 dg1test kernel: nvkm_ioctl+0x10b/0x250 [nouveau] Aug 10 07:01:29 dg1test kernel: nvif_object_mthd+0xa8/0x1f0 [nouveau] Aug 10 07:01:29 dg1test kernel: nvif_event_allow+0x2a/0xa0 [nouveau] Aug 10 07:01:29 dg1test kernel: nouveau_fence_enable_signaling+0x78/0x80 [nouveau] Aug 10 07:01:29 dg1test kernel: __dma_fence_enable_signaling+0x5e/0x100 Aug 10 07:01:29 dg1test kernel: dma_fence_add_callback+0x4b/0xd0 Aug 10 07:01:29 dg1test kernel: nouveau_cli_work_queue+0xae/0x110 [nouveau] Aug 10 07:01:29 dg1test kernel: nouveau_gem_object_close+0x1d1/0x2a0 [nouveau] Aug 10 07:01:29 dg1test kernel: drm_gem_handle_delete+0x70/0xe0 [drm] Aug 10 07:01:29 dg1test kernel: drm_ioctl_kernel+0xa5/0x150 [drm] Aug 10 07:01:29 dg1test kernel: drm_ioctl+0x256/0x490 [drm] Aug 10 07:01:29 dg1test kernel: nouveau_drm_ioctl+0x5a/0xb0 [nouveau] Aug 10 07:01:29 dg1test kernel: __x64_sys_ioctl+0x91/0xd0 Aug 10 07:01:29 dg1test kernel: do_syscall_64+0x3c/0x90 Aug 10 07:01:29 dg1test kernel: entry_SYSCALL_64_after_hwframe+0x72/0xdc Aug 10 07:01:29 dg1test kernel: -> #0 (&fctx->lock){-...}-{2:2}: Aug 10 07:01:29 dg1test kernel: __lock_acquire+0x14e3/0x2240 Aug 10 07:01:29 dg1test kernel: lock_acquire+0xc8/0x2a0 Aug 10 07:01:29 dg1test kernel: _raw_spin_lock_irqsave+0x4b/0x70 Aug 10 07:01:29 dg1test kernel: nouveau_fence_wait_uevent_handler+0x2b/0x100 [nouveau] Aug 10 07:01:29 dg1test kernel: nvkm_client_event+0xf/0x20 [nouveau] Aug 10 07:01:29 dg1test kernel: nvkm_event_ntfy+0x9b/0xf0 [nouveau] Aug 10 07:01:29 dg1test kernel: ga100_fifo_nonstall_intr+0x24/0x30 [nouveau] Aug 10 07:01:29 dg1test kernel: nvkm_intr+0x12c/0x240 [nouveau] Aug 10 07:01:29 dg1test kernel: __handle_irq_event_percpu+0x88/0x240 Aug 10 07:01:29 dg1test kernel: handle_irq_event+0x38/0x80 Aug 10 07:01:29 dg1test kernel: handle_edge_irq+0xa3/0x240 Aug 10 07:01:29 dg1test kernel: __common_interrupt+0x72/0x160 Aug 10 07:01:29 dg1test kernel: common_interrupt+0x60/0xe0 Aug 10 07:01:29 dg1test kernel: asm_common_interrupt+0x26/0x40 Aug 10 07:01:29 dg1test kernel: other info that might help us debug this: Aug 10 07:01:29 dg1test kernel: Chain exists of: &fctx->lock --> &device->intr.lock --> &event->list_lock#2 Aug 10 07:01:29 dg1test kernel: Possible unsafe locking scenario: Aug 10 07:01:29 dg1test kernel: CPU0 CPU1 Aug 10 07:01:29 dg1test kernel: ---- ---- Aug 10 07:01:29 dg1test kernel: lock(&event->list_lock#2); Aug 10 07:01:29 dg1test kernel: lock(&device->intr.lock); Aug 10 07:01:29 dg1test kernel: lock(&event->list_lock#2); Aug 10 07:01:29 dg1test kernel: lock(&fctx->lock); Aug 10 07:01:29 dg1test kernel: *** DEADLOCK *** Aug 10 07:01:29 dg1test kernel: 2 locks held by wireplumber/2236: Aug 10 07:01:29 dg1test kernel: #0: ffff8fca53177bf8 (&device->intr.lock){-...}-{2:2}, at: nvkm_intr+0x29/0x240 [nouveau] Aug 10 07:01:29 dg1test kernel: #1: ffff8fca41208610 (&event->list_lock#2){-...}-{2:2}, at: nvkm_event_ntfy+0x50/0xf0 [nouveau] Aug 10 07:01:29 dg1test kernel: stack backtrace: Aug 10 07:01:29 dg1test kernel: CPU: 6 PID: 2236 Comm: wireplumber Not tainted 6.4.0-rc7+ #10 Aug 10 07:01:29 dg1test kernel: Hardware name: Gigabyte Technology Co., Ltd. Z390 I AORUS PRO WIFI/Z390 I AORUS PRO WIFI-CF, BIOS F8 11/05/2021 Aug 10 07:01:29 dg1test kernel: Call Trace: Aug 10 07:01:29 dg1test kernel: <TASK> Aug 10 07:01:29 dg1test kernel: dump_stack_lvl+0x5b/0x90 Aug 10 07:01:29 dg1test kernel: check_noncircular+0xe2/0x110 Aug 10 07:01:29 dg1test kernel: __lock_acquire+0x14e3/0x2240 Aug 10 07:01:29 dg1test kernel: lock_acquire+0xc8/0x2a0 Aug 10 07:01:29 dg1test kernel: ? nouveau_fence_wait_uevent_handler+0x2b/0x100 [nouveau] Aug 10 07:01:29 dg1test kernel: ? lock_acquire+0xc8/0x2a0 Aug 10 07:01:29 dg1test kernel: _raw_spin_lock_irqsave+0x4b/0x70 Aug 10 07:01:29 dg1test kernel: ? nouveau_fence_wait_uevent_handler+0x2b/0x100 [nouveau] Aug 10 07:01:29 dg1test kernel: nouveau_fence_wait_uevent_handler+0x2b/0x100 [nouveau] Aug 10 07:01:29 dg1test kernel: nvkm_client_event+0xf/0x20 [nouveau] Aug 10 07:01:29 dg1test kernel: nvkm_event_ntfy+0x9b/0xf0 [nouveau] Aug 10 07:01:29 dg1test kernel: ga100_fifo_nonstall_intr+0x24/0x30 [nouveau] Aug 10 07:01:29 dg1test kernel: nvkm_intr+0x12c/0x240 [nouveau] Aug 10 07:01:29 dg1test kernel: __handle_irq_event_percpu+0x88/0x240 Aug 10 07:01:29 dg1test kernel: handle_irq_event+0x38/0x80 Aug 10 07:01:29 dg1test kernel: handle_edge_irq+0xa3/0x240 Aug 10 07:01:29 dg1test kernel: __common_interrupt+0x72/0x160 Aug 10 07:01:29 dg1test kernel: common_interrupt+0x60/0xe0 Aug 10 07:01:29 dg1test kernel: asm_common_interrupt+0x26/0x40 Aug 10 07:01:29 dg1test kernel: RIP: 0033:0x7fb66174d700 Aug 10 07:01:29 dg1test kernel: Code: c1 e2 05 29 ca 8d 0c 10 0f be 07 84 c0 75 eb 89 c8 c3 0f 1f 84 00 00 00 00 00 f3 0f 1e fa e9 d7 0f fc ff 0f 1f 80 00 00 00 00 <f3> 0f 1e fa e9 c7 0f fc> Aug 10 07:01:29 dg1test kernel: RSP: 002b:00007ffdd3c48438 EFLAGS: 00000206 Aug 10 07:01:29 dg1test kernel: RAX: 000055bb758763c0 RBX: 000055bb758752c0 RCX: 00000000000028b0 Aug 10 07:01:29 dg1test kernel: RDX: 000055bb758752c0 RSI: 000055bb75887490 RDI: 000055bb75862950 Aug 10 07:01:29 dg1test kernel: RBP: 00007ffdd3c48490 R08: 000055bb75873b10 R09: 0000000000000001 Aug 10 07:01:29 dg1test kernel: R10: 0000000000000004 R11: 000055bb7587f000 R12: 000055bb75887490 Aug 10 07:01:29 dg1test kernel: R13: 000055bb757f6280 R14: 000055bb758875c0 R15: 000055bb757f6280 Aug 10 07:01:29 dg1test kernel: </TASK> Signed-off-by: Dave Airlie <airlied@redhat.com> Tested-by: Danilo Krummrich <dakr@redhat.com> Reviewed-by: Danilo Krummrich <dakr@redhat.com> Signed-off-by: Danilo Krummrich <dakr@redhat.com> Link: https://patchwork.freedesktop.org/patch/msgid/20231107053255.2257079-1-airlied@gmail.com
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KMSAN reported the following uninit-value access issue: lo speed is unknown, defaulting to 1000 ===================================================== BUG: KMSAN: uninit-value in ib_get_width_and_speed drivers/infiniband/core/verbs.c:1889 [inline] BUG: KMSAN: uninit-value in ib_get_eth_speed+0x546/0xaf0 drivers/infiniband/core/verbs.c:1998 ib_get_width_and_speed drivers/infiniband/core/verbs.c:1889 [inline] ib_get_eth_speed+0x546/0xaf0 drivers/infiniband/core/verbs.c:1998 siw_query_port drivers/infiniband/sw/siw/siw_verbs.c:173 [inline] siw_get_port_immutable+0x6f/0x120 drivers/infiniband/sw/siw/siw_verbs.c:203 setup_port_data drivers/infiniband/core/device.c:848 [inline] setup_device drivers/infiniband/core/device.c:1244 [inline] ib_register_device+0x1589/0x1df0 drivers/infiniband/core/device.c:1383 siw_device_register drivers/infiniband/sw/siw/siw_main.c:72 [inline] siw_newlink+0x129e/0x13d0 drivers/infiniband/sw/siw/siw_main.c:490 nldev_newlink+0x8fd/0xa60 drivers/infiniband/core/nldev.c:1763 rdma_nl_rcv_skb drivers/infiniband/core/netlink.c:239 [inline] rdma_nl_rcv+0xe8a/0x1120 drivers/infiniband/core/netlink.c:259 netlink_unicast_kernel net/netlink/af_netlink.c:1342 [inline] netlink_unicast+0xf4b/0x1230 net/netlink/af_netlink.c:1368 netlink_sendmsg+0x1242/0x1420 net/netlink/af_netlink.c:1910 sock_sendmsg_nosec net/socket.c:730 [inline] __sock_sendmsg net/socket.c:745 [inline] ____sys_sendmsg+0x997/0xd60 net/socket.c:2588 ___sys_sendmsg+0x271/0x3b0 net/socket.c:2642 __sys_sendmsg net/socket.c:2671 [inline] __do_sys_sendmsg net/socket.c:2680 [inline] __se_sys_sendmsg net/socket.c:2678 [inline] __x64_sys_sendmsg+0x2fa/0x4a0 net/socket.c:2678 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x44/0x110 arch/x86/entry/common.c:82 entry_SYSCALL_64_after_hwframe+0x63/0x6b Local variable lksettings created at: ib_get_eth_speed+0x4b/0xaf0 drivers/infiniband/core/verbs.c:1974 siw_query_port drivers/infiniband/sw/siw/siw_verbs.c:173 [inline] siw_get_port_immutable+0x6f/0x120 drivers/infiniband/sw/siw/siw_verbs.c:203 CPU: 0 PID: 11257 Comm: syz-executor.1 Not tainted 6.6.0-14500-g1c41041124bd #10 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.16.2-1.fc38 04/01/2014 ===================================================== If __ethtool_get_link_ksettings() fails, `netdev_speed` is set to the default value, SPEED_1000. In this case, if `lanes` field of struct ethtool_link_ksettings is not initialized, an uninitialized value is passed to ib_get_width_and_speed(). This causes the above issue. This patch resolves the issue by initializing `lanes` to 0. Fixes: cb06b6b ("RDMA/core: Get IB width and speed from netdev") Signed-off-by: Shigeru Yoshida <syoshida@redhat.com> Link: https://lore.kernel.org/r/20231108143113.1360567-1-syoshida@redhat.com Signed-off-by: Leon Romanovsky <leon@kernel.org>
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…f-times'
Eduard Zingerman says:
====================
verify callbacks as if they are called unknown number of times
This series updates verifier logic for callback functions handling.
Current master simulates callback body execution exactly once,
which leads to verifier not detecting unsafe programs like below:
static int unsafe_on_zero_iter_cb(__u32 idx, struct num_context *ctx)
{
ctx->i = 0;
return 0;
}
SEC("?raw_tp")
int unsafe_on_zero_iter(void *unused)
{
struct num_context loop_ctx = { .i = 32 };
__u8 choice_arr[2] = { 0, 1 };
bpf_loop(100, unsafe_on_zero_iter_cb, &loop_ctx, 0);
return choice_arr[loop_ctx.i];
}
This was reported previously in [0].
The basic idea of the fix is to schedule callback entry state for
verification in env->head until some identical, previously visited
state in current DFS state traversal is found. Same logic as with open
coded iterators, and builds on top recent fixes [1] for those.
The series is structured as follows:
- patches #1,2,3 update strobemeta, xdp_synproxy selftests and
bpf_loop_bench benchmark to allow convergence of the bpf_loop
callback states;
- patches #4,5 just shuffle the code a bit;
- patch #6 is the main part of the series;
- patch #7 adds test cases for #6;
- patch #8 extend patch #6 with same speculative scalar widening
logic, as used for open coded iterators;
- patch #9 adds test cases for #8;
- patch #10 extends patch #6 to track maximal number of callback
executions specifically for bpf_loop();
- patch #11 adds test cases for #10.
Veristat results comparing this series to master+patches #1,2,3 using selftests
show the following difference:
File Program States (A) States (B) States (DIFF)
------------------------- ------------- ---------- ---------- -------------
bpf_loop_bench.bpf.o benchmark 1 2 +1 (+100.00%)
pyperf600_bpf_loop.bpf.o on_event 322 407 +85 (+26.40%)
strobemeta_bpf_loop.bpf.o on_event 113 151 +38 (+33.63%)
xdp_synproxy_kern.bpf.o syncookie_tc 341 291 -50 (-14.66%)
xdp_synproxy_kern.bpf.o syncookie_xdp 344 301 -43 (-12.50%)
Veristat results comparing this series to master using Tetragon BPF
files [2] also show some differences.
States diff varies from +2% to +15% on 23 programs out of 186,
no new failures.
Changelog:
- V3 [5] -> V4, changes suggested by Andrii:
- validate mark_chain_precision() result in patch #10;
- renaming s/cumulative_callback_depth/callback_unroll_depth/.
- V2 [4] -> V3:
- fixes in expected log messages for test cases:
- callback_result_precise;
- parent_callee_saved_reg_precise_with_callback;
- parent_stack_slot_precise_with_callback;
- renamings (suggested by Alexei):
- s/callback_iter_depth/cumulative_callback_depth/
- s/is_callback_iter_next/calls_callback/
- s/mark_callback_iter_next/mark_calls_callback/
- prepare_func_exit() updated to exit with -EFAULT when
callee->in_callback_fn is true but calls_callback() is not true
for callsite;
- test case 'bpf_loop_iter_limit_nested' rewritten to use return
value check instead of verifier log message checks
(suggested by Alexei).
- V1 [3] -> V2, changes suggested by Andrii:
- small changes for error handling code in __check_func_call();
- callback body processing log is now matched in relevant
verifier_subprog_precision.c tests;
- R1 passed to bpf_loop() is now always marked as precise;
- log level 2 message for bpf_loop() iteration termination instead of
iteration depth messages;
- __no_msg macro removed;
- bpf_loop_iter_limit_nested updated to avoid using __no_msg;
- commit message for patch #3 updated according to Alexei's request.
[0] https://lore.kernel.org/bpf/CA+vRuzPChFNXmouzGG+wsy=6eMcfr1mFG0F3g7rbg-sedGKW3w@mail.gmail.com/
[1] https://lore.kernel.org/bpf/20231024000917.12153-1-eddyz87@gmail.com/
[2] git@github.com:cilium/tetragon.git
[3] https://lore.kernel.org/bpf/20231116021803.9982-1-eddyz87@gmail.com/T/#t
[4] https://lore.kernel.org/bpf/20231118013355.7943-1-eddyz87@gmail.com/T/#t
[5] https://lore.kernel.org/bpf/20231120225945.11741-1-eddyz87@gmail.com/T/#t
====================
Link: https://lore.kernel.org/r/20231121020701.26440-1-eddyz87@gmail.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
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When creating ceq_0 during probing irdma, cqp.sc_cqp will be sent as a cqp_request to cqp->sc_cqp.sq_ring. If the request is pending when removing the irdma driver or unplugging its aux device, cqp.sc_cqp will be dereferenced as wrong struct in irdma_free_pending_cqp_request(). PID: 3669 TASK: ffff88aef892c000 CPU: 28 COMMAND: "kworker/28:0" #0 [fffffe0000549e38] crash_nmi_callback at ffffffff810e3a34 #1 [fffffe0000549e40] nmi_handle at ffffffff810788b2 #2 [fffffe0000549ea0] default_do_nmi at ffffffff8107938f #3 [fffffe0000549eb8] do_nmi at ffffffff81079582 #4 [fffffe0000549ef0] end_repeat_nmi at ffffffff82e016b4 [exception RIP: native_queued_spin_lock_slowpath+1291] RIP: ffffffff8127e72b RSP: ffff88aa841ef778 RFLAGS: 00000046 RAX: 0000000000000000 RBX: ffff88b01f849700 RCX: ffffffff8127e47e RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffffffff83857ec0 RBP: ffff88afe3e4efc8 R8: ffffed15fc7c9dfa R9: ffffed15fc7c9dfa R10: 0000000000000001 R11: ffffed15fc7c9df9 R12: 0000000000740000 R13: ffff88b01f849708 R14: 0000000000000003 R15: ffffed1603f092e1 ORIG_RAX: ffffffffffffffff CS: 0010 SS: 0000 -- <NMI exception stack> -- #5 [ffff88aa841ef778] native_queued_spin_lock_slowpath at ffffffff8127e72b #6 [ffff88aa841ef7b0] _raw_spin_lock_irqsave at ffffffff82c22aa4 #7 [ffff88aa841ef7c8] __wake_up_common_lock at ffffffff81257363 #8 [ffff88aa841ef888] irdma_free_pending_cqp_request at ffffffffa0ba12cc [irdma] #9 [ffff88aa841ef958] irdma_cleanup_pending_cqp_op at ffffffffa0ba1469 [irdma] #10 [ffff88aa841ef9c0] irdma_ctrl_deinit_hw at ffffffffa0b2989f [irdma] #11 [ffff88aa841efa28] irdma_remove at ffffffffa0b252df [irdma] #12 [ffff88aa841efae8] auxiliary_bus_remove at ffffffff8219afdb #13 [ffff88aa841efb00] device_release_driver_internal at ffffffff821882e6 #14 [ffff88aa841efb38] bus_remove_device at ffffffff82184278 #15 [ffff88aa841efb88] device_del at ffffffff82179d23 #16 [ffff88aa841efc48] ice_unplug_aux_dev at ffffffffa0eb1c14 [ice] #17 [ffff88aa841efc68] ice_service_task at ffffffffa0d88201 [ice] #18 [ffff88aa841efde8] process_one_work at ffffffff811c589a #19 [ffff88aa841efe60] worker_thread at ffffffff811c71ff #20 [ffff88aa841eff10] kthread at ffffffff811d87a0 #21 [ffff88aa841eff50] ret_from_fork at ffffffff82e0022f Fixes: 44d9e52 ("RDMA/irdma: Implement device initialization definitions") Link: https://lore.kernel.org/r/20231130081415.891006-1-lishifeng@sangfor.com.cn Suggested-by: "Ismail, Mustafa" <mustafa.ismail@intel.com> Signed-off-by: Shifeng Li <lishifeng@sangfor.com.cn> Reviewed-by: Shiraz Saleem <shiraz.saleem@intel.com> Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
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This conflict exist since the rk3399-rockpro64.dts creation from a copy of the rk3399-firefly.dts.
The RockPro64 schematic clearly state that PMIC_INT_L is GPIO3-B2, not GPIO1-C5 as stated for Firefly-RK3399.