Broken sources #19
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[ 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 PeterCxy#1 [ffffa2bfc9ec3ba0] schedule at ffffffffa8061224 OnePlusOSS#2 [ffffa2bfc9ec3bb8] schedule_preempt_disabled at ffffffffa80615ee OnePlusOSS#3 [ffffa2bfc9ec3bc8] __mutex_lock at ffffffffa8062fd7 OnePlusOSS#4 [ffffa2bfc9ec3c40] __mutex_lock_slowpath at ffffffffa80631d3 OnePlusOSS#5 [ffffa2bfc9ec3c50] mutex_lock at ffffffffa806320c OnePlusOSS#6 [ffffa2bfc9ec3c68] target_free_device at ffffffffc0935998 [target_core_mod] OnePlusOSS#7 [ffffa2bfc9ec3c90] target_core_dev_release at ffffffffc092f975 [target_core_mod] OnePlusOSS#8 [ffffa2bfc9ec3ca0] config_item_put at ffffffffa79d250f OnePlusOSS#9 [ffffa2bfc9ec3cd0] config_item_put at ffffffffa79d2583 OnePlusOSS#10 [ffffa2bfc9ec3ce0] target_devices_idr_iter at ffffffffc0933f3a [target_core_mod] OnePlusOSS#11 [ffffa2bfc9ec3d00] idr_for_each at ffffffffa803f6fc OnePlusOSS#12 [ffffa2bfc9ec3d60] target_for_each_device at ffffffffc0935670 [target_core_mod] OnePlusOSS#13 [ffffa2bfc9ec3d98] transport_deregister_session at ffffffffc0946408 [target_core_mod] OnePlusOSS#14 [ffffa2bfc9ec3dc8] iscsit_close_session at ffffffffc09a44a6 [iscsi_target_mod] OnePlusOSS#15 [ffffa2bfc9ec3df0] iscsit_close_connection at ffffffffc09a4a88 [iscsi_target_mod] OnePlusOSS#16 [ffffa2bfc9ec3df8] finish_task_switch at ffffffffa76e5d07 OnePlusOSS#17 [ffffa2bfc9ec3e78] iscsit_take_action_for_connection_exit at ffffffffc0991c23 [iscsi_target_mod] OnePlusOSS#18 [ffffa2bfc9ec3ea0] iscsi_target_tx_thread at ffffffffc09a403b [iscsi_target_mod] OnePlusOSS#19 [ffffa2bfc9ec3f08] kthread at ffffffffa76d8080 OnePlusOSS#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>
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Dec 18, 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 OnePlusOSS#10 [ffffb80edbf37cb8] __purge_vmap_area_lazy at ffffffff9b23a1e0 mm/vmalloc.c:701:0 OnePlusOSS#11 [ffffb80edbf37ce0] try_purge_vmap_area_lazy at ffffffff9b23a2cc mm/vmalloc.c:722:0 OnePlusOSS#12 [ffffb80edbf37ce0] free_vmap_area_noflush at ffffffff9b23a2cc mm/vmalloc.c:754:0 OnePlusOSS#13 [ffffb80edbf37cf8] free_unmap_vmap_area at ffffffff9b23bb3b mm/vmalloc.c:764:0 OnePlusOSS#14 [ffffb80edbf37cf8] remove_vm_area at ffffffff9b23bb3b mm/vmalloc.c:1509:0 OnePlusOSS#15 [ffffb80edbf37d18] __vunmap at ffffffff9b23bb8a mm/vmalloc.c:1537:0 OnePlusOSS#16 [ffffb80edbf37d40] vfree at ffffffff9b23bc85 mm/vmalloc.c:1612:0 OnePlusOSS#17 [ffffb80edbf37d58] megasas_free_host_crash_buffer [megaraid_sas] at ffffffffc020b7f2 drivers/scsi/megaraid/megaraid_sas_fusion.c:3932:0 OnePlusOSS#18 [ffffb80edbf37d80] fw_crash_state_store [megaraid_sas] at ffffffffc01f804d drivers/scsi/megaraid/megaraid_sas_base.c:3291:0 OnePlusOSS#19 [ffffb80edbf37dc0] dev_attr_store at ffffffff9b56dd7b drivers/base/core.c:758:0 OnePlusOSS#20 [ffffb80edbf37dd0] sysfs_kf_write at ffffffff9b326acf fs/sysfs/file.c:144:0 OnePlusOSS#21 [ffffb80edbf37de0] kernfs_fop_write at ffffffff9b325fd4 fs/kernfs/file.c:316:0 OnePlusOSS#22 [ffffb80edbf37e20] __vfs_write at ffffffff9b29418a fs/read_write.c:480:0 OnePlusOSS#23 [ffffb80edbf37ea8] vfs_write at ffffffff9b294462 fs/read_write.c:544:0 #24 [ffffb80edbf37ee8] SYSC_write at ffffffff9b2946ec fs/read_write.c:590:0 #25 [ffffb80edbf37ee8] SyS_write at ffffffff9b2946ec fs/read_write.c:582:0 #26 [ffffb80edbf37f30] do_syscall_64 at ffffffff9b003ca9 arch/x86/entry/common.c:298:0 #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 OnePlusOSS#10 [ffffb80f2d3c7dd0] sysfs_kf_write at ffffffff9b326acf fs/sysfs/file.c:144:0 OnePlusOSS#11 [ffffb80f2d3c7de0] kernfs_fop_write at ffffffff9b325fd4 fs/kernfs/file.c:316:0 OnePlusOSS#12 [ffffb80f2d3c7e20] __vfs_write at ffffffff9b29418a fs/read_write.c:480:0 OnePlusOSS#13 [ffffb80f2d3c7ea8] vfs_write at ffffffff9b294462 fs/read_write.c:544:0 OnePlusOSS#14 [ffffb80f2d3c7ee8] SYSC_write at ffffffff9b2946ec fs/read_write.c:590:0 OnePlusOSS#15 [ffffb80f2d3c7ee8] SyS_write at ffffffff9b2946ec fs/read_write.c:582:0 OnePlusOSS#16 [ffffb80f2d3c7f30] do_syscall_64 at ffffffff9b003ca9 arch/x86/entry/common.c:298:0 OnePlusOSS#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>
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[ 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 PeterCxy#1 [ffffa2bfc9ec3ba0] schedule at ffffffffa8061224 OnePlusOSS#2 [ffffa2bfc9ec3bb8] schedule_preempt_disabled at ffffffffa80615ee OnePlusOSS#3 [ffffa2bfc9ec3bc8] __mutex_lock at ffffffffa8062fd7 OnePlusOSS#4 [ffffa2bfc9ec3c40] __mutex_lock_slowpath at ffffffffa80631d3 OnePlusOSS#5 [ffffa2bfc9ec3c50] mutex_lock at ffffffffa806320c OnePlusOSS#6 [ffffa2bfc9ec3c68] target_free_device at ffffffffc0935998 [target_core_mod] OnePlusOSS#7 [ffffa2bfc9ec3c90] target_core_dev_release at ffffffffc092f975 [target_core_mod] OnePlusOSS#8 [ffffa2bfc9ec3ca0] config_item_put at ffffffffa79d250f OnePlusOSS#9 [ffffa2bfc9ec3cd0] config_item_put at ffffffffa79d2583 OnePlusOSS#10 [ffffa2bfc9ec3ce0] target_devices_idr_iter at ffffffffc0933f3a [target_core_mod] OnePlusOSS#11 [ffffa2bfc9ec3d00] idr_for_each at ffffffffa803f6fc OnePlusOSS#12 [ffffa2bfc9ec3d60] target_for_each_device at ffffffffc0935670 [target_core_mod] OnePlusOSS#13 [ffffa2bfc9ec3d98] transport_deregister_session at ffffffffc0946408 [target_core_mod] OnePlusOSS#14 [ffffa2bfc9ec3dc8] iscsit_close_session at ffffffffc09a44a6 [iscsi_target_mod] OnePlusOSS#15 [ffffa2bfc9ec3df0] iscsit_close_connection at ffffffffc09a4a88 [iscsi_target_mod] OnePlusOSS#16 [ffffa2bfc9ec3df8] finish_task_switch at ffffffffa76e5d07 OnePlusOSS#17 [ffffa2bfc9ec3e78] iscsit_take_action_for_connection_exit at ffffffffc0991c23 [iscsi_target_mod] OnePlusOSS#18 [ffffa2bfc9ec3ea0] iscsi_target_tx_thread at ffffffffc09a403b [iscsi_target_mod] OnePlusOSS#19 [ffffa2bfc9ec3f08] kthread at ffffffffa76d8080 OnePlusOSS#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>
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[ 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 PeterCxy#1 [fffffe00003fce58] nmi_handle at ffffffff89225fa3 OnePlusOSS#2 [fffffe00003fceb0] default_do_nmi at ffffffff8922642e OnePlusOSS#3 [fffffe00003fced0] do_nmi at ffffffff8922660d OnePlusOSS#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 OnePlusOSS#5 [ffffa655314979e8] io_serial_in at ffffffff89792594 OnePlusOSS#6 [ffffa655314979e8] wait_for_xmitr at ffffffff89793470 OnePlusOSS#7 [ffffa65531497a08] serial8250_console_putchar at ffffffff897934f6 OnePlusOSS#8 [ffffa65531497a20] uart_console_write at ffffffff8978b605 OnePlusOSS#9 [ffffa65531497a48] serial8250_console_write at ffffffff89796558 OnePlusOSS#10 [ffffa65531497ac8] console_unlock at ffffffff89316124 OnePlusOSS#11 [ffffa65531497b10] vprintk_emit at ffffffff89317c07 OnePlusOSS#12 [ffffa65531497b68] printk at ffffffff89318306 OnePlusOSS#13 [ffffa65531497bc8] print_hex_dump at ffffffff89650765 OnePlusOSS#14 [ffffa65531497ca8] tun_do_read at ffffffffc0b06c27 [tun] OnePlusOSS#15 [ffffa65531497d38] tun_recvmsg at ffffffffc0b06e34 [tun] OnePlusOSS#16 [ffffa65531497d68] handle_rx at ffffffffc0c5d682 [vhost_net] OnePlusOSS#17 [ffffa65531497ed0] vhost_worker at ffffffffc0c644dc [vhost] OnePlusOSS#18 [ffffa65531497f10] kthread at ffffffff892d2e72 OnePlusOSS#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> (cherry picked from commit 68459b8) Signed-off-by: Vegard Nossum <vegard.nossum@oracle.com>
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[ 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 PeterCxy#1 [fffffe00003fce58] nmi_handle at ffffffff89225fa3 OnePlusOSS#2 [fffffe00003fceb0] default_do_nmi at ffffffff8922642e OnePlusOSS#3 [fffffe00003fced0] do_nmi at ffffffff8922660d OnePlusOSS#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 OnePlusOSS#5 [ffffa655314979e8] io_serial_in at ffffffff89792594 OnePlusOSS#6 [ffffa655314979e8] wait_for_xmitr at ffffffff89793470 OnePlusOSS#7 [ffffa65531497a08] serial8250_console_putchar at ffffffff897934f6 OnePlusOSS#8 [ffffa65531497a20] uart_console_write at ffffffff8978b605 OnePlusOSS#9 [ffffa65531497a48] serial8250_console_write at ffffffff89796558 OnePlusOSS#10 [ffffa65531497ac8] console_unlock at ffffffff89316124 OnePlusOSS#11 [ffffa65531497b10] vprintk_emit at ffffffff89317c07 OnePlusOSS#12 [ffffa65531497b68] printk at ffffffff89318306 OnePlusOSS#13 [ffffa65531497bc8] print_hex_dump at ffffffff89650765 OnePlusOSS#14 [ffffa65531497ca8] tun_do_read at ffffffffc0b06c27 [tun] OnePlusOSS#15 [ffffa65531497d38] tun_recvmsg at ffffffffc0b06e34 [tun] OnePlusOSS#16 [ffffa65531497d68] handle_rx at ffffffffc0c5d682 [vhost_net] OnePlusOSS#17 [ffffa65531497ed0] vhost_worker at ffffffffc0c644dc [vhost] OnePlusOSS#18 [ffffa65531497f10] kthread at ffffffff892d2e72 OnePlusOSS#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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Battery percentage didn't update when screen is on. Only when user turn-off turn-on screen, battery percentage will update. Fix this please!
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