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rcu: INFO: rcu_preempt detected stalls on CPUs/tasks: rcu: 0-...!: (0 ticks this GP) idle=e73/1/0x4000000000000000 softirq=41217/41217 fqs=0 (detected by 1, t=10502 jiffies, g=60813, q=609) Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 PID: 3544 Comm: syz-executor.0 Not tainted 5.15.132-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/04/2023 RIP: 0010:native_save_fl arch/x86/include/asm/irqflags.h:35 [inline] RIP: 0010:arch_local_save_flags arch/x86/include/asm/irqflags.h:70 [inline] RIP: 0010:arch_local_irq_save arch/x86/include/asm/irqflags.h:106 [inline] RIP: 0010:lock_acquire+0x177/0x4f0 kernel/locking/lockdep.c:5618 Code: 4c 89 fb 48 c1 eb 03 42 80 3c 2b 00 74 08 4c 89 ff e8 1d 45 67 00 48 c7 84 24 80 00 00 00 00 00 00 00 9c 8f 84 24 80 00 00 00 <42> 80 3c 2b 00 74 08 4c 89 ff e8 7a 44 67 00 48 8d 5c 24 60 4c 8b RSP: 0018:ffffc90000006c20 EFLAGS: 00000046 RAX: 0000000000000000 RBX: 1ffff92000000d94 RCX: ffffffff81627cec RDX: 0000000000000000 RSI: ffffffff8ad87960 RDI: ffffffff8ad87920 RBP: ffffc90000006d80 R08: dffffc0000000000 R09: fffffbfff1bc81fe R10: 0000000000000000 R11: dffffc0000000001 R12: 1ffff92000000d8c R13: dffffc0000000000 R14: 0000000000000000 R15: ffffc90000006ca0 FS: 0000555556d29480(0000) GS:ffff8880b9a00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f69ac8f6020 CR3: 000000003fef3000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: <NMI> </NMI> <IRQ> rcu_lock_acquire+0x2a/0x30 include/linux/rcupdate.h:269 rcu_read_lock include/linux/rcupdate.h:696 [inline] advance_sched+0x6ce/0x940 net/sched/sch_taprio.c:769 __run_hrtimer kernel/time/hrtimer.c:1685 [inline] __hrtimer_run_queues+0x598/0xcf0 kernel/time/hrtimer.c:1749 hrtimer_interrupt+0x392/0x980 kernel/time/hrtimer.c:1811 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1085 [inline] __sysvec_apic_timer_interrupt+0x139/0x470 arch/x86/kernel/apic/apic.c:1102 sysvec_apic_timer_interrupt+0x3e/0xb0 arch/x86/kernel/apic/apic.c:1096 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:638 RIP: 0010:unwind_next_frame+0x46/0x1fa0 Code: ff df 48 8d 5f 48 48 89 d9 48 c1 e9 03 48 89 4c 24 28 80 3c 01 00 74 12 48 89 df e8 04 5a 91 00 48 b8 00 00 00 00 00 fc ff df <48> 89 5c 24 08 4d 8b 77 48 49 8d 6f 38 48 89 e9 48 c1 e9 03 48 89 RSP: 0018:ffffc900000071a8 EFLAGS: 00000246 RAX: dffffc0000000000 RBX: ffffc900000072a8 RCX: 1ffff92000000e55 RDX: dffffc0000000000 RSI: ffffffff8a6003b3 RDI: ffffc90000007260 RBP: ffffc900000072f0 R08: 0000000000000009 R09: ffffc90000007350 R10: 0000000000000000 R11: dffffc0000000001 R12: ffff88807f3b3b80 R13: ffffffff816dc560 R14: ffffc90000007340 R15: ffffc90000007260 arch_stack_walk+0x10d/0x140 arch/x86/kernel/stacktrace.c:25 stack_trace_save+0x113/0x1c0 kernel/stacktrace.c:122 kasan_save_stack mm/kasan/common.c:38 [inline] kasan_set_track mm/kasan/common.c:46 [inline] set_alloc_info mm/kasan/common.c:434 [inline] ____kasan_kmalloc+0xba/0xf0 mm/kasan/common.c:513 kasan_kmalloc include/linux/kasan.h:264 [inline] __kmalloc_node_track_caller+0x195/0x390 mm/slub.c:4963 kmalloc_reserve net/core/skbuff.c:356 [inline] __alloc_skb+0x12c/0x590 net/core/skbuff.c:427 __napi_alloc_skb+0x15c/0x2d0 net/core/skbuff.c:568 napi_alloc_skb include/linux/skbuff.h:3046 [inline] page_to_skb+0x294/0xd20 drivers/net/virtio_net.c:454 receive_mergeable drivers/net/virtio_net.c:1070 [inline] receive_buf+0x1218/0x64c0 drivers/net/virtio_net.c:1180 virtnet_receive drivers/net/virtio_net.c:1472 [inline] virtnet_poll+0x629/0x1270 drivers/net/virtio_net.c:1585 __napi_poll+0xc7/0x440 net/core/dev.c:7012 napi_poll net/core/dev.c:7079 [inline] net_rx_action+0x617/0xda0 net/core/dev.c:7166 __do_softirq+0x3b3/0x93a kernel/softirq.c:558 invoke_softirq kernel/softirq.c:432 [inline] __irq_exit_rcu+0x155/0x240 kernel/softirq.c:637 irq_exit_rcu+0x5/0x20 kernel/softirq.c:649 common_interrupt+0xa4/0xc0 arch/x86/kernel/irq.c:240 </IRQ> <TASK> asm_common_interrupt+0x22/0x40 arch/x86/include/asm/idtentry.h:629 RIP: 0010:get_current arch/x86/include/asm/current.h:15 [inline] RIP: 0010:__sanitizer_cov_trace_pc+0x4/0x60 kernel/kcov.c:196 Code: 00 00 00 0f 1f 00 53 48 89 fb e8 17 00 00 00 48 8b 3d c8 f4 63 0c 48 89 de 5b e9 a7 cd 48 00 cc cc cc cc cc cc cc 48 8b 04 24 <65> 48 8b 0d 54 52 82 7e 65 8b 15 55 52 82 7e f7 c2 00 01 ff 00 74 RSP: 0018:ffffc90002daf510 EFLAGS: 00000283 RAX: ffffffff81b977c5 RBX: ffff88807e997a90 RCX: ffff88807f3b3b80 RDX: 0000000000000000 RSI: 0000000000000014 RDI: ffff888078c0cd00 RBP: ffffc90002daf5f0 R08: ffffffff81b59156 R09: ffffed100f1819b8 R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000000000014 R13: dffffc0000000000 R14: 1ffff920005b5ea8 R15: ffff888078c0cd00 rcu_lock_acquire+0x5/0x30 include/linux/rcupdate.h:268 rcu_read_lock include/linux/rcupdate.h:696 [inline] count_memcg_event_mm+0x8d/0x3e0 include/linux/memcontrol.h:1078 handle_mm_fault+0x161/0x5950 mm/memory.c:4834 do_user_addr_fault arch/x86/mm/fault.c:1397 [inline] handle_page_fault arch/x86/mm/fault.c:1485 [inline] exc_page_fault+0x271/0x740 arch/x86/mm/fault.c:1541 asm_exc_page_fault+0x22/0x30 arch/x86/include/asm/idtentry.h:568 RIP: 0010:copy_user_enhanced_fast_string+0xe/0x40 arch/x86/lib/copy_user_64.S:206 Code: 89 d1 c1 e9 03 83 e2 07 f3 48 a5 89 d1 f3 a4 31 c0 0f 01 ca c3 0f 1f 80 00 00 00 00 0f 01 cb 83 fa 40 0f 82 70 ff ff ff 89 d1 <f3> a4 31 c0 0f 01 ca c3 66 2e 0f 1f 84 00 00 00 00 00 89 d1 83 f8 RSP: 0018:ffffc90002daf9d0 EFLAGS: 00050246 RAX: ffffffff84051101 RBX: 00007f69ac8f6060 RCX: 0000000000000040 RDX: 0000000000000040 RSI: ffff88801a30a000 RDI: 00007f69ac8f6020 RBP: ffffc90002dafd20 R08: dffffc0000000000 R09: ffffed1003461408 R10: 0000000000000000 R11: dffffc0000000001 R12: 00007f69ac8f6020 R13: 0000000000000040 R14: ffff88801a30a000 R15: 00007ffffffff000 copy_user_generic arch/x86/include/asm/uaccess_64.h:37 [inline] raw_copy_to_user arch/x86/include/asm/uaccess_64.h:58 [inline] copyout lib/iov_iter.c:157 [inline] copy_page_to_iter_iovec lib/iov_iter.c:228 [inline] __copy_page_to_iter lib/iov_iter.c:861 [inline] copy_page_to_iter+0x49a/0x10d0 lib/iov_iter.c:889 pipe_read+0x57c/0x12b0 fs/pipe.c:306 call_read_iter include/linux/fs.h:2097 [inline] new_sync_read fs/read_write.c:404 [inline] vfs_read+0xa9f/0xe10 fs/read_write.c:485 ksys_read+0x1a2/0x2c0 fs/read_write.c:623 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x61/0xcb RIP: 0033:0x7f69ac7d978c Code: ec 28 48 89 54 24 18 48 89 74 24 10 89 7c 24 08 e8 59 81 02 00 48 8b 54 24 18 48 8b 74 24 10 41 89 c0 8b 7c 24 08 31 c0 0f 05 <48> 3d 00 f0 ff ff 77 34 44 89 c7 48 89 44 24 08 e8 af 81 02 00 48 RSP: 002b:00007fffa8cfd8f0 EFLAGS: 00000246 ORIG_RAX: 0000000000000000 RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f69ac7d978c RDX: 0000000000000040 RSI: 00007f69ac8f6020 RDI: 00000000000000f9 RBP: 00007fffa8cfd97c R08: 0000000000000000 R09: 0079746972756365 R10: 00007fffa8cfd2b0 R11: 0000000000000246 R12: 0000000000000032 R13: 00000000000de50c R14: 00000000000de33d R15: 0000000000000001 </TASK> rcu: rcu_preempt kthread timer wakeup didn't happen for 10501 jiffies! g60813 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402 rcu: Possible timer handling issue on cpu=0 timer-softirq=31419 rcu: rcu_preempt kthread starved for 10502 jiffies! g60813 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402 ->cpu=0 rcu: Unless rcu_preempt kthread gets sufficient CPU time, OOM is now expected behavior. rcu: RCU grace-period kthread stack dump: task:rcu_preempt state:I stack:27000 pid: 15 ppid: 2 flags:0x00004000 Call Trace: <TASK> context_switch kernel/sched/core.c:5026 [inline] __schedule+0x12c4/0x4590 kernel/sched/core.c:6372 schedule+0x11b/0x1f0 kernel/sched/core.c:6455 schedule_timeout+0x1b9/0x300 kernel/time/timer.c:1884 rcu_gp_fqs_loop+0x2af/0xf70 kernel/rcu/tree.c:1959 rcu_gp_kthread+0xa4/0x360 kernel/rcu/tree.c:2132 kthread+0x3f6/0x4f0 kernel/kthread.c:319 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:298 </TASK> rcu: Stack dump where RCU GP kthread last ran: Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 PID: 3544 Comm: syz-executor.0 Not tainted 5.15.132-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/04/2023 RIP: 0010:task_irq_context kernel/locking/lockdep.c:4520 [inline] RIP: 0010:__lock_acquire+0x3d6/0x1ff0 kernel/locking/lockdep.c:4949 Code: 80 00 00 00 48 89 03 65 8b 05 2a f0 9f 7e 31 db 85 c0 0f 95 c3 01 db 48 8d bd d4 0a 00 00 48 89 f8 48 c1 e8 03 48 89 44 24 68 <0f> b6 04 10 84 c0 4c 8b 74 24 38 48 89 f9 48 89 7c 24 10 0f 85 5c RSP: 0018:ffffc90000006b40 EFLAGS: 00000807 RAX: 1ffff1100fe768ca RBX: 0000000000000002 RCX: ffff88807f3b4670 RDX: dffffc0000000000 RSI: 0000000000000000 RDI: ffff88807f3b4654 RBP: ffff88807f3b3b80 R08: 0000000000000001 R09: 0000000000000001 R10: 0000000000000000 R11: dffffc0000000001 R12: 000000000000102f R13: 000000000000000a R14: 000000000000000a R15: 0000000000000000 FS: 0000555556d29480(0000) GS:ffff8880b9a00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f69ac8f6020 CR3: 000000003fef3000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: <NMI> </NMI> <IRQ> lock_acquire+0x1db/0x4f0 kernel/locking/lockdep.c:5622 __raw_spin_lock include/linux/spinlock_api_smp.h:142 [inline] _raw_spin_lock+0x2a/0x40 kernel/locking/spinlock.c:154 spin_lock include/linux/spinlock.h:363 [inline] advance_sched+0x47/0x940 net/sched/sch_taprio.c:716 __run_hrtimer kernel/time/hrtimer.c:1685 [inline] __hrtimer_run_queues+0x598/0xcf0 kernel/time/hrtimer.c:1749 hrtimer_interrupt+0x392/0x980 kernel/time/hrtimer.c:1811 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1085 [inline] __sysvec_apic_timer_interrupt+0x139/0x470 arch/x86/kernel/apic/apic.c:1102 sysvec_apic_timer_interrupt+0x3e/0xb0 arch/x86/kernel/apic/apic.c:1096 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:638 RIP: 0010:unwind_next_frame+0x46/0x1fa0 Code: ff df 48 8d 5f 48 48 89 d9 48 c1 e9 03 48 89 4c 24 28 80 3c 01 00 74 12 48 89 df e8 04 5a 91 00 48 b8 00 00 00 00 00 fc ff df <48> 89 5c 24 08 4d 8b 77 48 49 8d 6f 38 48 89 e9 48 c1 e9 03 48 89 RSP: 0018:ffffc900000071a8 EFLAGS: 00000246 RAX: dffffc0000000000 RBX: ffffc900000072a8 RCX: 1ffff92000000e55 RDX: dffffc0000000000 RSI: ffffffff8a6003b3 RDI: ffffc90000007260 RBP: ffffc900000072f0 R08: 0000000000000009 R09: ffffc90000007350 R10: 0000000000000000 R11: dffffc0000000001 R12: ffff88807f3b3b80 R13: ffffffff816dc560 R14: ffffc90000007340 R15: ffffc90000007260 arch_stack_walk+0x10d/0x140 arch/x86/kernel/stacktrace.c:25 stack_trace_save+0x113/0x1c0 kernel/stacktrace.c:122 kasan_save_stack mm/kasan/common.c:38 [inline] kasan_set_track mm/kasan/common.c:46 [inline] set_alloc_info mm/kasan/common.c:434 [inline] ____kasan_kmalloc+0xba/0xf0 mm/kasan/common.c:513 kasan_kmalloc include/linux/kasan.h:264 [inline] __kmalloc_node_track_caller+0x195/0x390 mm/slub.c:4963 kmalloc_reserve net/core/skbuff.c:356 [inline] __alloc_skb+0x12c/0x590 net/core/skbuff.c:427 __napi_alloc_skb+0x15c/0x2d0 net/core/skbuff.c:568 napi_alloc_skb include/linux/skbuff.h:3046 [inline] page_to_skb+0x294/0xd20 drivers/net/virtio_net.c:454 receive_mergeable drivers/net/virtio_net.c:1070 [inline] receive_buf+0x1218/0x64c0 drivers/net/virtio_net.c:1180 virtnet_receive drivers/net/virtio_net.c:1472 [inline] virtnet_poll+0x629/0x1270 drivers/net/virtio_net.c:1585 __napi_poll+0xc7/0x440 net/core/dev.c:7012 napi_poll net/core/dev.c:7079 [inline] net_rx_action+0x617/0xda0 net/core/dev.c:7166 __do_softirq+0x3b3/0x93a kernel/softirq.c:558 invoke_softirq kernel/softirq.c:432 [inline] __irq_exit_rcu+0x155/0x240 kernel/softirq.c:637 irq_exit_rcu+0x5/0x20 kernel/softirq.c:649 common_interrupt+0xa4/0xc0 arch/x86/kernel/irq.c:240 </IRQ> <TASK> asm_common_interrupt+0x22/0x40 arch/x86/include/asm/idtentry.h:629 RIP: 0010:get_current arch/x86/include/asm/current.h:15 [inline] RIP: 0010:__sanitizer_cov_trace_pc+0x4/0x60 kernel/kcov.c:196 Code: 00 00 00 0f 1f 00 53 48 89 fb e8 17 00 00 00 48 8b 3d c8 f4 63 0c 48 89 de 5b e9 a7 cd 48 00 cc cc cc cc cc cc cc 48 8b 04 24 <65> 48 8b 0d 54 52 82 7e 65 8b 15 55 52 82 7e f7 c2 00 01 ff 00 74 RSP: 0018:ffffc90002daf510 EFLAGS: 00000283 RAX: ffffffff81b977c5 RBX: ffff88807e997a90 RCX: ffff88807f3b3b80 RDX: 0000000000000000 RSI: 0000000000000014 RDI: ffff888078c0cd00 RBP: ffffc90002daf5f0 R08: ffffffff81b59156 R09: ffffed100f1819b8 R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000000000014 R13: dffffc0000000000 R14: 1ffff920005b5ea8 R15: ffff888078c0cd00 rcu_lock_acquire+0x5/0x30 include/linux/rcupdate.h:268 rcu_read_lock include/linux/rcupdate.h:696 [inline] count_memcg_event_mm+0x8d/0x3e0 include/linux/memcontrol.h:1078 handle_mm_fault+0x161/0x5950 mm/memory.c:4834 do_user_addr_fault arch/x86/mm/fault.c:1397 [inline] handle_page_fault arch/x86/mm/fault.c:1485 [inline] exc_page_fault+0x271/0x740 arch/x86/mm/fault.c:1541 asm_exc_page_fault+0x22/0x30 arch/x86/include/asm/idtentry.h:568 RIP: 0010:copy_user_enhanced_fast_string+0xe/0x40 arch/x86/lib/copy_user_64.S:206 Code: 89 d1 c1 e9 03 83 e2 07 f3 48 a5 89 d1 f3 a4 31 c0 0f 01 ca c3 0f 1f 80 00 00 00 00 0f 01 cb 83 fa 40 0f 82 70 ff ff ff 89 d1 <f3> a4 31 c0 0f 01 ca c3 66 2e 0f 1f 84 00 00 00 00 00 89 d1 83 f8 RSP: 0018:ffffc90002daf9d0 EFLAGS: 00050246 RAX: ffffffff84051101 RBX: 00007f69ac8f6060 RCX: 0000000000000040 RDX: 0000000000000040 RSI: ffff88801a30a000 RDI: 00007f69ac8f6020 RBP: ffffc90002dafd20 R08: dffffc0000000000 R09: ffffed1003461408 R10: 0000000000000000 R11: dffffc0000000001 R12: 00007f69ac8f6020 R13: 0000000000000040 R14: ffff88801a30a000 R15: 00007ffffffff000 copy_user_generic arch/x86/include/asm/uaccess_64.h:37 [inline] raw_copy_to_user arch/x86/include/asm/uaccess_64.h:58 [inline] copyout lib/iov_iter.c:157 [inline] copy_page_to_iter_iovec lib/iov_iter.c:228 [inline] __copy_page_to_iter lib/iov_iter.c:861 [inline] copy_page_to_iter+0x49a/0x10d0 lib/iov_iter.c:889 pipe_read+0x57c/0x12b0 fs/pipe.c:306 call_read_iter include/linux/fs.h:2097 [inline] new_sync_read fs/read_write.c:404 [inline] vfs_read+0xa9f/0xe10 fs/read_write.c:485 ksys_read+0x1a2/0x2c0 fs/read_write.c:623 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x61/0xcb RIP: 0033:0x7f69ac7d978c Code: ec 28 48 89 54 24 18 48 89 74 24 10 89 7c 24 08 e8 59 81 02 00 48 8b 54 24 18 48 8b 74 24 10 41 89 c0 8b 7c 24 08 31 c0 0f 05 <48> 3d 00 f0 ff ff 77 34 44 89 c7 48 89 44 24 08 e8 af 81 02 00 48 RSP: 002b:00007fffa8cfd8f0 EFLAGS: 00000246 ORIG_RAX: 0000000000000000 RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f69ac7d978c RDX: 0000000000000040 RSI: 00007f69ac8f6020 RDI: 00000000000000f9 RBP: 00007fffa8cfd97c R08: 0000000000000000 R09: 0079746972756365 R10: 00007fffa8cfd2b0 R11: 0000000000000246 R12: 0000000000000032 R13: 00000000000de50c R14: 00000000000de33d R15: 0000000000000001 </TASK>
Time | Kernel | Commit | Syzkaller | Config | Log | Report | Syz repro | C repro | VM info | Assets (help?) | Manager | Title |
---|---|---|---|---|---|---|---|---|---|---|---|---|
2023/09/19 19:23 | linux-5.15.y | 35ecaa3632bf | 0b6a67ac | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci2-linux-5-15-kasan | INFO: rcu detected stall in net_rx_action |