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kcal support #13
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mesziman
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Jan 19, 2023
…g the sock [ Upstream commit 3cf7203ca620682165706f70a1b12b5194607dce ] There is a race condition in vxlan that when deleting a vxlan device during receiving packets, there is a possibility that the sock is released after getting vxlan_sock vs from sk_user_data. Then in later vxlan_ecn_decapsulate(), vxlan_get_sk_family() we will got NULL pointer dereference. e.g. #0 [ffffa25ec6978a38] machine_kexec at ffffffff8c669757 UtsavBalar1231#1 [ffffa25ec6978a90] __crash_kexec at ffffffff8c7c0a4d UtsavBalar1231#2 [ffffa25ec6978b58] crash_kexec at ffffffff8c7c1c48 UtsavBalar1231#3 [ffffa25ec6978b60] oops_end at ffffffff8c627f2b UtsavBalar1231#4 [ffffa25ec6978b80] page_fault_oops at ffffffff8c678fcb UtsavBalar1231#5 [ffffa25ec6978bd8] exc_page_fault at ffffffff8d109542 UtsavBalar1231#6 [ffffa25ec6978c00] asm_exc_page_fault at ffffffff8d200b62 [exception RIP: vxlan_ecn_decapsulate+0x3b] RIP: ffffffffc1014e7b RSP: ffffa25ec6978cb0 RFLAGS: 00010246 RAX: 0000000000000008 RBX: ffff8aa000888000 RCX: 0000000000000000 RDX: 000000000000000e RSI: ffff8a9fc7ab803e RDI: ffff8a9fd1168700 RBP: ffff8a9fc7ab803e R8: 0000000000700000 R9: 00000000000010ae R10: ffff8a9fcb748980 R11: 0000000000000000 R12: ffff8a9fd1168700 R13: ffff8aa000888000 R14: 00000000002a0000 R15: 00000000000010ae ORIG_RAX: ffffffffffffffff CS: 0010 SS: 0018 UtsavBalar1231#7 [ffffa25ec6978ce8] vxlan_rcv at ffffffffc10189cd [vxlan] UtsavBalar1231#8 [ffffa25ec6978d90] udp_queue_rcv_one_skb at ffffffff8cfb6507 UtsavBalar1231#9 [ffffa25ec6978dc0] udp_unicast_rcv_skb at ffffffff8cfb6e45 UtsavBalar1231#10 [ffffa25ec6978dc8] __udp4_lib_rcv at ffffffff8cfb8807 UtsavBalar1231#11 [ffffa25ec6978e20] ip_protocol_deliver_rcu at ffffffff8cf76951 UtsavBalar1231#12 [ffffa25ec6978e48] ip_local_deliver at ffffffff8cf76bde UtsavBalar1231#13 [ffffa25ec6978ea0] __netif_receive_skb_one_core at ffffffff8cecde9b UtsavBalar1231#14 [ffffa25ec6978ec8] process_backlog at ffffffff8cece139 UtsavBalar1231#15 [ffffa25ec6978f00] __napi_poll at ffffffff8ceced1a UtsavBalar1231#16 [ffffa25ec6978f28] net_rx_action at ffffffff8cecf1f3 UtsavBalar1231#17 [ffffa25ec6978fa0] __softirqentry_text_start at ffffffff8d4000ca UtsavBalar1231#18 [ffffa25ec6978ff0] do_softirq at ffffffff8c6fbdc3 Reproducer: https://github.com/Mellanox/ovs-tests/blob/master/test-ovs-vxlan-remove-tunnel-during-traffic.sh Fix this by waiting for all sk_user_data reader to finish before releasing the sock. Reported-by: Jianlin Shi <jishi@redhat.com> Suggested-by: Jakub Sitnicki <jakub@cloudflare.com> Fixes: 6a93cc9 ("udp-tunnel: Add a few more UDP tunnel APIs") Signed-off-by: Hangbin Liu <liuhangbin@gmail.com> Reviewed-by: Jiri Pirko <jiri@nvidia.com> Signed-off-by: David S. Miller <davem@davemloft.net> Signed-off-by: Sasha Levin <sashal@kernel.org>
macka69
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Jun 4, 2023
[ Upstream commit 05bb0167c80b8f93c6a4e0451b7da9b96db990c2 ] ACPICA commit 770653e3ba67c30a629ca7d12e352d83c2541b1e Before this change we see the following UBSAN stack trace in Fuchsia: #0 0x000021e4213b3302 in acpi_ds_init_aml_walk(struct acpi_walk_state*, union acpi_parse_object*, struct acpi_namespace_node*, u8*, u32, struct acpi_evaluate_info*, u8) ../../third_party/acpica/source/components/dispatcher/dswstate.c:682 <platform-bus-x86.so>+0x233302 #1.2 0x000020d0f660777f in ubsan_get_stack_trace() compiler-rt/lib/ubsan/ubsan_diag.cpp:41 <libclang_rt.asan.so>+0x3d77f #1.1 0x000020d0f660777f in maybe_print_stack_trace() compiler-rt/lib/ubsan/ubsan_diag.cpp:51 <libclang_rt.asan.so>+0x3d77f #1 0x000020d0f660777f in ~scoped_report() compiler-rt/lib/ubsan/ubsan_diag.cpp:387 <libclang_rt.asan.so>+0x3d77f UtsavBalar1231#2 0x000020d0f660b96d in handlepointer_overflow_impl() compiler-rt/lib/ubsan/ubsan_handlers.cpp:809 <libclang_rt.asan.so>+0x4196d UtsavBalar1231#3 0x000020d0f660b50d in compiler-rt/lib/ubsan/ubsan_handlers.cpp:815 <libclang_rt.asan.so>+0x4150d UtsavBalar1231#4 0x000021e4213b3302 in acpi_ds_init_aml_walk(struct acpi_walk_state*, union acpi_parse_object*, struct acpi_namespace_node*, u8*, u32, struct acpi_evaluate_info*, u8) ../../third_party/acpica/source/components/dispatcher/dswstate.c:682 <platform-bus-x86.so>+0x233302 UtsavBalar1231#5 0x000021e4213e2369 in acpi_ds_call_control_method(struct acpi_thread_state*, struct acpi_walk_state*, union acpi_parse_object*) ../../third_party/acpica/source/components/dispatcher/dsmethod.c:605 <platform-bus-x86.so>+0x262369 UtsavBalar1231#6 0x000021e421437fac in acpi_ps_parse_aml(struct acpi_walk_state*) ../../third_party/acpica/source/components/parser/psparse.c:550 <platform-bus-x86.so>+0x2b7fac UtsavBalar1231#7 0x000021e4214464d2 in acpi_ps_execute_method(struct acpi_evaluate_info*) ../../third_party/acpica/source/components/parser/psxface.c:244 <platform-bus-x86.so>+0x2c64d2 UtsavBalar1231#8 0x000021e4213aa052 in acpi_ns_evaluate(struct acpi_evaluate_info*) ../../third_party/acpica/source/components/namespace/nseval.c:250 <platform-bus-x86.so>+0x22a052 UtsavBalar1231#9 0x000021e421413dd8 in acpi_ns_init_one_device(acpi_handle, u32, void*, void**) ../../third_party/acpica/source/components/namespace/nsinit.c:735 <platform-bus-x86.so>+0x293dd8 UtsavBalar1231#10 0x000021e421429e98 in acpi_ns_walk_namespace(acpi_object_type, acpi_handle, u32, u32, acpi_walk_callback, acpi_walk_callback, void*, void**) ../../third_party/acpica/source/components/namespace/nswalk.c:298 <platform-bus-x86.so>+0x2a9e98 UtsavBalar1231#11 0x000021e4214131ac in acpi_ns_initialize_devices(u32) ../../third_party/acpica/source/components/namespace/nsinit.c:268 <platform-bus-x86.so>+0x2931ac UtsavBalar1231#12 0x000021e42147c40d in acpi_initialize_objects(u32) ../../third_party/acpica/source/components/utilities/utxfinit.c:304 <platform-bus-x86.so>+0x2fc40d UtsavBalar1231#13 0x000021e42126d603 in acpi::acpi_impl::initialize_acpi(acpi::acpi_impl*) ../../src/devices/board/lib/acpi/acpi-impl.cc:224 <platform-bus-x86.so>+0xed603 Add a simple check that avoids incrementing a pointer by zero, but otherwise behaves as before. Note that our findings are against ACPICA 20221020, but the same code exists on master. Link: acpica/acpica@770653e3 Signed-off-by: Bob Moore <robert.moore@intel.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> Signed-off-by: Sasha Levin <sashal@kernel.org>
macka69
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Nov 4, 2023
[ Upstream commit 0b0747d507bffb827e40fc0f9fb5883fffc23477 ] The following processes run into a deadlock. CPU 41 was waiting for CPU 29 to handle a CSD request while holding spinlock "crashdump_lock", but CPU 29 was hung by that spinlock with IRQs disabled. PID: 17360 TASK: ffff95c1090c5c40 CPU: 41 COMMAND: "mrdiagd" !# 0 [ffffb80edbf37b58] __read_once_size at ffffffff9b871a40 include/linux/compiler.h:185:0 !# 1 [ffffb80edbf37b58] atomic_read at ffffffff9b871a40 arch/x86/include/asm/atomic.h:27:0 !# 2 [ffffb80edbf37b58] dump_stack at ffffffff9b871a40 lib/dump_stack.c:54:0 # 3 [ffffb80edbf37b78] csd_lock_wait_toolong at ffffffff9b131ad5 kernel/smp.c:364:0 # 4 [ffffb80edbf37b78] __csd_lock_wait at ffffffff9b131ad5 kernel/smp.c:384:0 # 5 [ffffb80edbf37bf8] csd_lock_wait at ffffffff9b13267a kernel/smp.c:394:0 # 6 [ffffb80edbf37bf8] smp_call_function_many at ffffffff9b13267a kernel/smp.c:843:0 # 7 [ffffb80edbf37c50] smp_call_function at ffffffff9b13279d kernel/smp.c:867:0 # 8 [ffffb80edbf37c50] on_each_cpu at ffffffff9b13279d kernel/smp.c:976:0 # 9 [ffffb80edbf37c78] flush_tlb_kernel_range at ffffffff9b085c4b arch/x86/mm/tlb.c:742:0 UtsavBalar1231#10 [ffffb80edbf37cb8] __purge_vmap_area_lazy at ffffffff9b23a1e0 mm/vmalloc.c:701:0 UtsavBalar1231#11 [ffffb80edbf37ce0] try_purge_vmap_area_lazy at ffffffff9b23a2cc mm/vmalloc.c:722:0 UtsavBalar1231#12 [ffffb80edbf37ce0] free_vmap_area_noflush at ffffffff9b23a2cc mm/vmalloc.c:754:0 UtsavBalar1231#13 [ffffb80edbf37cf8] free_unmap_vmap_area at ffffffff9b23bb3b mm/vmalloc.c:764:0 UtsavBalar1231#14 [ffffb80edbf37cf8] remove_vm_area at ffffffff9b23bb3b mm/vmalloc.c:1509:0 UtsavBalar1231#15 [ffffb80edbf37d18] __vunmap at ffffffff9b23bb8a mm/vmalloc.c:1537:0 UtsavBalar1231#16 [ffffb80edbf37d40] vfree at ffffffff9b23bc85 mm/vmalloc.c:1612:0 UtsavBalar1231#17 [ffffb80edbf37d58] megasas_free_host_crash_buffer [megaraid_sas] at ffffffffc020b7f2 drivers/scsi/megaraid/megaraid_sas_fusion.c:3932:0 UtsavBalar1231#18 [ffffb80edbf37d80] fw_crash_state_store [megaraid_sas] at ffffffffc01f804d drivers/scsi/megaraid/megaraid_sas_base.c:3291:0 UtsavBalar1231#19 [ffffb80edbf37dc0] dev_attr_store at ffffffff9b56dd7b drivers/base/core.c:758:0 UtsavBalar1231#20 [ffffb80edbf37dd0] sysfs_kf_write at ffffffff9b326acf fs/sysfs/file.c:144:0 UtsavBalar1231#21 [ffffb80edbf37de0] kernfs_fop_write at ffffffff9b325fd4 fs/kernfs/file.c:316:0 UtsavBalar1231#22 [ffffb80edbf37e20] __vfs_write at ffffffff9b29418a fs/read_write.c:480:0 UtsavBalar1231#23 [ffffb80edbf37ea8] vfs_write at ffffffff9b294462 fs/read_write.c:544:0 UtsavBalar1231#24 [ffffb80edbf37ee8] SYSC_write at ffffffff9b2946ec fs/read_write.c:590:0 UtsavBalar1231#25 [ffffb80edbf37ee8] SyS_write at ffffffff9b2946ec fs/read_write.c:582:0 UtsavBalar1231#26 [ffffb80edbf37f30] do_syscall_64 at ffffffff9b003ca9 arch/x86/entry/common.c:298:0 UtsavBalar1231#27 [ffffb80edbf37f58] entry_SYSCALL_64 at ffffffff9ba001b1 arch/x86/entry/entry_64.S:238:0 PID: 17355 TASK: ffff95c1090c3d80 CPU: 29 COMMAND: "mrdiagd" !# 0 [ffffb80f2d3c7d30] __read_once_size at ffffffff9b0f2ab0 include/linux/compiler.h:185:0 !# 1 [ffffb80f2d3c7d30] native_queued_spin_lock_slowpath at ffffffff9b0f2ab0 kernel/locking/qspinlock.c:368:0 # 2 [ffffb80f2d3c7d58] pv_queued_spin_lock_slowpath at ffffffff9b0f244b arch/x86/include/asm/paravirt.h:674:0 # 3 [ffffb80f2d3c7d58] queued_spin_lock_slowpath at ffffffff9b0f244b arch/x86/include/asm/qspinlock.h:53:0 # 4 [ffffb80f2d3c7d68] queued_spin_lock at ffffffff9b8961a6 include/asm-generic/qspinlock.h:90:0 # 5 [ffffb80f2d3c7d68] do_raw_spin_lock_flags at ffffffff9b8961a6 include/linux/spinlock.h:173:0 # 6 [ffffb80f2d3c7d68] __raw_spin_lock_irqsave at ffffffff9b8961a6 include/linux/spinlock_api_smp.h:122:0 # 7 [ffffb80f2d3c7d68] _raw_spin_lock_irqsave at ffffffff9b8961a6 kernel/locking/spinlock.c:160:0 # 8 [ffffb80f2d3c7d88] fw_crash_buffer_store [megaraid_sas] at ffffffffc01f8129 drivers/scsi/megaraid/megaraid_sas_base.c:3205:0 # 9 [ffffb80f2d3c7dc0] dev_attr_store at ffffffff9b56dd7b drivers/base/core.c:758:0 UtsavBalar1231#10 [ffffb80f2d3c7dd0] sysfs_kf_write at ffffffff9b326acf fs/sysfs/file.c:144:0 UtsavBalar1231#11 [ffffb80f2d3c7de0] kernfs_fop_write at ffffffff9b325fd4 fs/kernfs/file.c:316:0 UtsavBalar1231#12 [ffffb80f2d3c7e20] __vfs_write at ffffffff9b29418a fs/read_write.c:480:0 UtsavBalar1231#13 [ffffb80f2d3c7ea8] vfs_write at ffffffff9b294462 fs/read_write.c:544:0 UtsavBalar1231#14 [ffffb80f2d3c7ee8] SYSC_write at ffffffff9b2946ec fs/read_write.c:590:0 UtsavBalar1231#15 [ffffb80f2d3c7ee8] SyS_write at ffffffff9b2946ec fs/read_write.c:582:0 UtsavBalar1231#16 [ffffb80f2d3c7f30] do_syscall_64 at ffffffff9b003ca9 arch/x86/entry/common.c:298:0 UtsavBalar1231#17 [ffffb80f2d3c7f58] entry_SYSCALL_64 at ffffffff9ba001b1 arch/x86/entry/entry_64.S:238:0 The lock is used to synchronize different sysfs operations, it doesn't protect any resource that will be touched by an interrupt. Consequently it's not required to disable IRQs. Replace the spinlock with a mutex to fix the deadlock. Signed-off-by: Junxiao Bi <junxiao.bi@oracle.com> Link: https://lore.kernel.org/r/20230828221018.19471-1-junxiao.bi@oracle.com Reviewed-by: Mike Christie <michael.christie@oracle.com> Cc: stable@vger.kernel.org Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com> Signed-off-by: Sasha Levin <sashal@kernel.org>
macka69
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Nov 4, 2023
[ Upstream commit a154f5f643c6ecddd44847217a7a3845b4350003 ] The following call trace shows a deadlock issue due to recursive locking of mutex "device_mutex". First lock acquire is in target_for_each_device() and second in target_free_device(). PID: 148266 TASK: ffff8be21ffb5d00 CPU: 10 COMMAND: "iscsi_ttx" #0 [ffffa2bfc9ec3b18] __schedule at ffffffffa8060e7f #1 [ffffa2bfc9ec3ba0] schedule at ffffffffa8061224 UtsavBalar1231#2 [ffffa2bfc9ec3bb8] schedule_preempt_disabled at ffffffffa80615ee UtsavBalar1231#3 [ffffa2bfc9ec3bc8] __mutex_lock at ffffffffa8062fd7 UtsavBalar1231#4 [ffffa2bfc9ec3c40] __mutex_lock_slowpath at ffffffffa80631d3 UtsavBalar1231#5 [ffffa2bfc9ec3c50] mutex_lock at ffffffffa806320c UtsavBalar1231#6 [ffffa2bfc9ec3c68] target_free_device at ffffffffc0935998 [target_core_mod] UtsavBalar1231#7 [ffffa2bfc9ec3c90] target_core_dev_release at ffffffffc092f975 [target_core_mod] UtsavBalar1231#8 [ffffa2bfc9ec3ca0] config_item_put at ffffffffa79d250f UtsavBalar1231#9 [ffffa2bfc9ec3cd0] config_item_put at ffffffffa79d2583 UtsavBalar1231#10 [ffffa2bfc9ec3ce0] target_devices_idr_iter at ffffffffc0933f3a [target_core_mod] UtsavBalar1231#11 [ffffa2bfc9ec3d00] idr_for_each at ffffffffa803f6fc UtsavBalar1231#12 [ffffa2bfc9ec3d60] target_for_each_device at ffffffffc0935670 [target_core_mod] UtsavBalar1231#13 [ffffa2bfc9ec3d98] transport_deregister_session at ffffffffc0946408 [target_core_mod] UtsavBalar1231#14 [ffffa2bfc9ec3dc8] iscsit_close_session at ffffffffc09a44a6 [iscsi_target_mod] UtsavBalar1231#15 [ffffa2bfc9ec3df0] iscsit_close_connection at ffffffffc09a4a88 [iscsi_target_mod] UtsavBalar1231#16 [ffffa2bfc9ec3df8] finish_task_switch at ffffffffa76e5d07 UtsavBalar1231#17 [ffffa2bfc9ec3e78] iscsit_take_action_for_connection_exit at ffffffffc0991c23 [iscsi_target_mod] UtsavBalar1231#18 [ffffa2bfc9ec3ea0] iscsi_target_tx_thread at ffffffffc09a403b [iscsi_target_mod] UtsavBalar1231#19 [ffffa2bfc9ec3f08] kthread at ffffffffa76d8080 UtsavBalar1231#20 [ffffa2bfc9ec3f50] ret_from_fork at ffffffffa8200364 Fixes: 36d4cb4 ("scsi: target: Avoid that EXTENDED COPY commands trigger lock inversion") Signed-off-by: Junxiao Bi <junxiao.bi@oracle.com> Link: https://lore.kernel.org/r/20230918225848.66463-1-junxiao.bi@oracle.com Reviewed-by: Mike Christie <michael.christie@oracle.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com> Signed-off-by: Sasha Levin <sashal@kernel.org>
UtsavBalar1231
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Jun 6, 2024
[ Upstream commit f8bbc07ac535593139c875ffa19af924b1084540 ] vhost_worker will call tun call backs to receive packets. If too many illegal packets arrives, tun_do_read will keep dumping packet contents. When console is enabled, it will costs much more cpu time to dump packet and soft lockup will be detected. net_ratelimit mechanism can be used to limit the dumping rate. PID: 33036 TASK: ffff949da6f20000 CPU: 23 COMMAND: "vhost-32980" #0 [fffffe00003fce50] crash_nmi_callback at ffffffff89249253 #1 [fffffe00003fce58] nmi_handle at ffffffff89225fa3 #2 [fffffe00003fceb0] default_do_nmi at ffffffff8922642e #3 [fffffe00003fced0] do_nmi at ffffffff8922660d #4 [fffffe00003fcef0] end_repeat_nmi at ffffffff89c01663 [exception RIP: io_serial_in+20] RIP: ffffffff89792594 RSP: ffffa655314979e8 RFLAGS: 00000002 RAX: ffffffff89792500 RBX: ffffffff8af428a0 RCX: 0000000000000000 RDX: 00000000000003fd RSI: 0000000000000005 RDI: ffffffff8af428a0 RBP: 0000000000002710 R8: 0000000000000004 R9: 000000000000000f R10: 0000000000000000 R11: ffffffff8acbf64f R12: 0000000000000020 R13: ffffffff8acbf698 R14: 0000000000000058 R15: 0000000000000000 ORIG_RAX: ffffffffffffffff CS: 0010 SS: 0018 #5 [ffffa655314979e8] io_serial_in at ffffffff89792594 #6 [ffffa655314979e8] wait_for_xmitr at ffffffff89793470 #7 [ffffa65531497a08] serial8250_console_putchar at ffffffff897934f6 #8 [ffffa65531497a20] uart_console_write at ffffffff8978b605 #9 [ffffa65531497a48] serial8250_console_write at ffffffff89796558 #10 [ffffa65531497ac8] console_unlock at ffffffff89316124 #11 [ffffa65531497b10] vprintk_emit at ffffffff89317c07 #12 [ffffa65531497b68] printk at ffffffff89318306 #13 [ffffa65531497bc8] print_hex_dump at ffffffff89650765 #14 [ffffa65531497ca8] tun_do_read at ffffffffc0b06c27 [tun] #15 [ffffa65531497d38] tun_recvmsg at ffffffffc0b06e34 [tun] #16 [ffffa65531497d68] handle_rx at ffffffffc0c5d682 [vhost_net] #17 [ffffa65531497ed0] vhost_worker at ffffffffc0c644dc [vhost] #18 [ffffa65531497f10] kthread at ffffffff892d2e72 #19 [ffffa65531497f50] ret_from_fork at ffffffff89c0022f Fixes: ef3db4a ("tun: avoid BUG, dump packet on GSO errors") Signed-off-by: Lei Chen <lei.chen@smartx.com> Reviewed-by: Willem de Bruijn <willemb@google.com> Acked-by: Jason Wang <jasowang@redhat.com> Reviewed-by: Eric Dumazet <edumazet@google.com> Acked-by: Michael S. Tsirkin <mst@redhat.com> Link: https://lore.kernel.org/r/20240415020247.2207781-1-lei.chen@smartx.com Signed-off-by: Jakub Kicinski <kuba@kernel.org> Signed-off-by: Sasha Levin <sashal@kernel.org>
wcedla
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this issue
Aug 20, 2024
[ Upstream commit f8bbc07ac535593139c875ffa19af924b1084540 ] vhost_worker will call tun call backs to receive packets. If too many illegal packets arrives, tun_do_read will keep dumping packet contents. When console is enabled, it will costs much more cpu time to dump packet and soft lockup will be detected. net_ratelimit mechanism can be used to limit the dumping rate. PID: 33036 TASK: ffff949da6f20000 CPU: 23 COMMAND: "vhost-32980" #0 [fffffe00003fce50] crash_nmi_callback at ffffffff89249253 liyafe1997#1 [fffffe00003fce58] nmi_handle at ffffffff89225fa3 liyafe1997#2 [fffffe00003fceb0] default_do_nmi at ffffffff8922642e liyafe1997#3 [fffffe00003fced0] do_nmi at ffffffff8922660d liyafe1997#4 [fffffe00003fcef0] end_repeat_nmi at ffffffff89c01663 [exception RIP: io_serial_in+20] RIP: ffffffff89792594 RSP: ffffa655314979e8 RFLAGS: 00000002 RAX: ffffffff89792500 RBX: ffffffff8af428a0 RCX: 0000000000000000 RDX: 00000000000003fd RSI: 0000000000000005 RDI: ffffffff8af428a0 RBP: 0000000000002710 R8: 0000000000000004 R9: 000000000000000f R10: 0000000000000000 R11: ffffffff8acbf64f R12: 0000000000000020 R13: ffffffff8acbf698 R14: 0000000000000058 R15: 0000000000000000 ORIG_RAX: ffffffffffffffff CS: 0010 SS: 0018 liyafe1997#5 [ffffa655314979e8] io_serial_in at ffffffff89792594 liyafe1997#6 [ffffa655314979e8] wait_for_xmitr at ffffffff89793470 liyafe1997#7 [ffffa65531497a08] serial8250_console_putchar at ffffffff897934f6 liyafe1997#8 [ffffa65531497a20] uart_console_write at ffffffff8978b605 liyafe1997#9 [ffffa65531497a48] serial8250_console_write at ffffffff89796558 liyafe1997#10 [ffffa65531497ac8] console_unlock at ffffffff89316124 liyafe1997#11 [ffffa65531497b10] vprintk_emit at ffffffff89317c07 liyafe1997#12 [ffffa65531497b68] printk at ffffffff89318306 UtsavBalar1231#13 [ffffa65531497bc8] print_hex_dump at ffffffff89650765 UtsavBalar1231#14 [ffffa65531497ca8] tun_do_read at ffffffffc0b06c27 [tun] UtsavBalar1231#15 [ffffa65531497d38] tun_recvmsg at ffffffffc0b06e34 [tun] UtsavBalar1231#16 [ffffa65531497d68] handle_rx at ffffffffc0c5d682 [vhost_net] UtsavBalar1231#17 [ffffa65531497ed0] vhost_worker at ffffffffc0c644dc [vhost] UtsavBalar1231#18 [ffffa65531497f10] kthread at ffffffff892d2e72 UtsavBalar1231#19 [ffffa65531497f50] ret_from_fork at ffffffff89c0022f Fixes: ef3db4a ("tun: avoid BUG, dump packet on GSO errors") Signed-off-by: Lei Chen <lei.chen@smartx.com> Reviewed-by: Willem de Bruijn <willemb@google.com> Acked-by: Jason Wang <jasowang@redhat.com> Reviewed-by: Eric Dumazet <edumazet@google.com> Acked-by: Michael S. Tsirkin <mst@redhat.com> Link: https://lore.kernel.org/r/20240415020247.2207781-1-lei.chen@smartx.com Signed-off-by: Jakub Kicinski <kuba@kernel.org> Signed-off-by: Sasha Levin <sashal@kernel.org>
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Aug 20, 2024
This patch is to fix a crash: liyafe1997#3 [ffffb6580689f898] oops_end at ffffffffa2835bc2 liyafe1997#4 [ffffb6580689f8b8] no_context at ffffffffa28766e7 liyafe1997#5 [ffffb6580689f920] async_page_fault at ffffffffa320135e [exception RIP: f2fs_is_compressed_page+34] RIP: ffffffffa2ba83a2 RSP: ffffb6580689f9d8 RFLAGS: 00010213 RAX: 0000000000000001 RBX: fffffc0f50b34bc0 RCX: 0000000000002122 RDX: 0000000000002123 RSI: 0000000000000c00 RDI: fffffc0f50b34bc0 RBP: ffff97e815a40178 R8: 0000000000000000 R9: ffff97e83ffc9000 R10: 0000000000032300 R11: 0000000000032380 R12: ffffb6580689fa38 R13: fffffc0f50b34bc0 R14: ffff97e825cbd000 R15: 0000000000000c00 ORIG_RAX: ffffffffffffffff CS: 0010 SS: 0018 liyafe1997#6 [ffffb6580689f9d8] __is_cp_guaranteed at ffffffffa2b7ea98 liyafe1997#7 [ffffb6580689f9f0] f2fs_submit_page_write at ffffffffa2b81a69 liyafe1997#8 [ffffb6580689fa30] f2fs_do_write_meta_page at ffffffffa2b99777 liyafe1997#9 [ffffb6580689fae0] __f2fs_write_meta_page at ffffffffa2b75f1a liyafe1997#10 [ffffb6580689fb18] f2fs_sync_meta_pages at ffffffffa2b77466 liyafe1997#11 [ffffb6580689fc98] do_checkpoint at ffffffffa2b78e46 liyafe1997#12 [ffffb6580689fd88] f2fs_write_checkpoint at ffffffffa2b79c29 UtsavBalar1231#13 [ffffb6580689fdd0] f2fs_sync_fs at ffffffffa2b69d95 UtsavBalar1231#14 [ffffb6580689fe20] sync_filesystem at ffffffffa2ad2574 UtsavBalar1231#15 [ffffb6580689fe30] generic_shutdown_super at ffffffffa2a9b582 UtsavBalar1231#16 [ffffb6580689fe48] kill_block_super at ffffffffa2a9b6d1 UtsavBalar1231#17 [ffffb6580689fe60] kill_f2fs_super at ffffffffa2b6abe1 UtsavBalar1231#18 [ffffb6580689fea0] deactivate_locked_super at ffffffffa2a9afb6 UtsavBalar1231#19 [ffffb6580689feb8] cleanup_mnt at ffffffffa2abcad4 UtsavBalar1231#20 [ffffb6580689fee0] task_work_run at ffffffffa28bca28 UtsavBalar1231#21 [ffffb6580689ff00] exit_to_usermode_loop at ffffffffa28050b7 UtsavBalar1231#22 [ffffb6580689ff38] do_syscall_64 at ffffffffa280560e UtsavBalar1231#23 [ffffb6580689ff50] entry_SYSCALL_64_after_hwframe at ffffffffa320008c This occurred when umount f2fs if enable F2FS_FS_COMPRESSION with F2FS_IO_TRACE. Fixes it by adding IS_IO_TRACED_PAGE to check validity of pid for page_private. Signed-off-by: Yu Changchun <yuchangchun1@huawei.com> Reviewed-by: Chao Yu <yuchao0@huawei.com> Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
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Any chance to get kcal display calibration support ?
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