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rcu: INFO: rcu_preempt detected stalls on CPUs/tasks: rcu: Tasks blocked on level-0 rcu_node (CPUs 0-1): P50/1:b..l (detected by 0, t=10502 jiffies, g=22369, q=192) task:kworker/u4:2 state:R running task stack:25376 pid: 50 ppid: 2 flags:0x00004000 Workqueue: netns cleanup_net Call Trace: <TASK> context_switch kernel/sched/core.c:4986 [inline] __schedule+0xab2/0x4db0 kernel/sched/core.c:6295 preempt_schedule_irq+0x4e/0x90 kernel/sched/core.c:6710 irqentry_exit+0x31/0x80 kernel/entry/common.c:425 asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:638 RIP: 0010:preempt_count arch/x86/include/asm/preempt.h:27 [inline] RIP: 0010:check_kcov_mode kernel/kcov.c:166 [inline] RIP: 0010:__sanitizer_cov_trace_pc+0x0/0x60 kernel/kcov.c:200 Code: 48 89 ef 5d e9 61 b2 46 00 5d be 03 00 00 00 e9 06 17 66 02 66 0f 1f 44 00 00 48 8b be b0 01 00 00 e8 b4 ff ff ff 31 c0 c3 90 <65> 8b 05 29 f7 89 7e 89 c1 48 8b 34 24 81 e1 00 01 00 00 65 48 8b RSP: 0018:ffffc900012ffb48 EFLAGS: 00000202 RAX: 0000000000000000 RBX: 00000000000e44bd RCX: 0000000000000001 RDX: 0000000000000000 RSI: ffff888015e88000 RDI: 0000000000000003 RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000000001 R10: ffffffff87affc45 R11: 0000000000000000 R12: 0000000000000006 R13: ffff88807bdc9a80 R14: 0000000000000002 R15: dffffc0000000000 get_nulls_value include/linux/list_nulls.h:56 [inline] inet_twsk_purge+0x4a8/0x7d0 net/ipv4/inet_timewait_sock.c:297 ops_exit_list+0x125/0x170 net/core/net_namespace.c:173 cleanup_net+0x4ea/0xb00 net/core/net_namespace.c:597 process_one_work+0x9ac/0x1650 kernel/workqueue.c:2307 worker_thread+0x657/0x1110 kernel/workqueue.c:2454 kthread+0x2e9/0x3a0 kernel/kthread.c:377 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295 </TASK> rcu: rcu_preempt kthread timer wakeup didn't happen for 10499 jiffies! g22369 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402 rcu: Possible timer handling issue on cpu=1 timer-softirq=8302 rcu: rcu_preempt kthread starved for 10500 jiffies! g22369 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402 ->cpu=1 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:28736 pid: 14 ppid: 2 flags:0x00004000 Call Trace: <TASK> context_switch kernel/sched/core.c:4986 [inline] __schedule+0xab2/0x4db0 kernel/sched/core.c:6295 schedule+0xd2/0x260 kernel/sched/core.c:6368 schedule_timeout+0x14a/0x2a0 kernel/time/timer.c:1881 rcu_gp_fqs_loop+0x186/0x810 kernel/rcu/tree.c:1963 rcu_gp_kthread+0x1de/0x320 kernel/rcu/tree.c:2136 kthread+0x2e9/0x3a0 kernel/kthread.c:377 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295 </TASK> rcu: Stack dump where RCU GP kthread last ran: Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 PID: 7169 Comm: syz-executor.3 Not tainted 5.17.0-rc2-syzkaller-00071-g1f2cfdd349b7 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:native_irq_disable arch/x86/include/asm/irqflags.h:40 [inline] RIP: 0010:arch_local_irq_disable arch/x86/include/asm/irqflags.h:75 [inline] RIP: 0010:arch_local_irq_save arch/x86/include/asm/irqflags.h:107 [inline] RIP: 0010:lock_is_held_type+0x54/0x140 kernel/locking/lockdep.c:5678 Code: c0 0f 85 ca 00 00 00 65 4c 8b 24 25 00 70 02 00 41 8b 94 24 5c 0a 00 00 85 d2 0f 85 b1 00 00 00 48 89 fd 41 89 f6 9c 8f 04 24 <fa> 48 c7 c7 60 61 ac 89 31 db e8 fd 0d 00 00 41 8b 84 24 58 0a 00 RSP: 0018:ffffc90000dc0e00 EFLAGS: 00000046 RAX: 0000000000000000 RBX: ffff88801e481340 RCX: 0000000000000001 RDX: 0000000000000000 RSI: 00000000ffffffff RDI: ffff8880b9d2a618 RBP: ffff8880b9d2a618 R08: 0000000000000000 R09: 0000000000000000 R10: ffffffff8167d08c R11: 0000000000000000 R12: ffff8880214e0000 R13: 00000000ffffffff R14: 00000000ffffffff R15: 0000000000000001 FS: 00007f088267f700(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b2dc2b000 CR3: 0000000019324000 CR4: 0000000000350ee0 Call Trace: <IRQ> lock_is_held include/linux/lockdep.h:283 [inline] __run_hrtimer kernel/time/hrtimer.c:1651 [inline] __hrtimer_run_queues+0x95a/0xe50 kernel/time/hrtimer.c:1749 hrtimer_interrupt+0x31c/0x790 kernel/time/hrtimer.c:1811 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1086 [inline] __sysvec_apic_timer_interrupt+0x146/0x530 arch/x86/kernel/apic/apic.c:1103 sysvec_apic_timer_interrupt+0x8e/0xc0 arch/x86/kernel/apic/apic.c:1097 </IRQ> <TASK> asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:638 RIP: 0010:__raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:152 [inline] RIP: 0010:_raw_spin_unlock_irqrestore+0x38/0x70 kernel/locking/spinlock.c:194 Code: 74 24 10 e8 3a 41 10 f8 48 89 ef e8 f2 b6 10 f8 81 e3 00 02 00 00 75 25 9c 58 f6 c4 02 75 2d 48 85 db 74 01 fb bf 01 00 00 00 <e8> 23 6a 03 f8 65 8b 05 9c 5d b5 76 85 c0 74 0a 5b 5d c3 e8 70 ab RSP: 0018:ffffc9000b1a7d98 EFLAGS: 00000206 RAX: 0000000000000002 RBX: 0000000000000200 RCX: 1ffffffff1b27221 RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000001 RBP: ffffffff8bba3700 R08: 0000000000000001 R09: 0000000000000001 R10: ffffffff817ebdd8 R11: 0000000000000000 R12: 1ffff92001634fbc R13: 0000000000000000 R14: ffffffff9e03a5ee R15: 0000000015393909 do_settimeofday64 kernel/time/timekeeping.c:1323 [inline] do_settimeofday64+0x3af/0x5b0 kernel/time/timekeeping.c:1293 do_sys_settimeofday64 kernel/time/time.c:195 [inline] do_sys_settimeofday64+0x1de/0x260 kernel/time/time.c:169 __do_sys_clock_settime kernel/time/posix-timers.c:1079 [inline] __se_sys_clock_settime kernel/time/posix-timers.c:1067 [inline] __x64_sys_clock_settime+0x1a1/0x280 kernel/time/posix-timers.c:1067 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x44/0xae RIP: 0033:0x7f0883d0a059 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f088267f168 EFLAGS: 00000246 ORIG_RAX: 00000000000000e3 RAX: ffffffffffffffda RBX: 00007f0883e1cf60 RCX: 00007f0883d0a059 RDX: 0000000000000000 RSI: 00000000200000c0 RDI: 0000000000000000 RBP: 00007f0883d6408d R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffedb4cfcbf R14: 00007f088267f300 R15: 0000000000022000 </TASK> ---------------- Code disassembly (best guess): 0: 48 89 ef mov %rbp,%rdi 3: 5d pop %rbp 4: e9 61 b2 46 00 jmpq 0x46b26a 9: 5d pop %rbp a: be 03 00 00 00 mov $0x3,%esi f: e9 06 17 66 02 jmpq 0x266171a 14: 66 0f 1f 44 00 00 nopw 0x0(%rax,%rax,1) 1a: 48 8b be b0 01 00 00 mov 0x1b0(%rsi),%rdi 21: e8 b4 ff ff ff callq 0xffffffda 26: 31 c0 xor %eax,%eax 28: c3 retq 29: 90 nop * 2a: 65 8b 05 29 f7 89 7e mov %gs:0x7e89f729(%rip),%eax # 0x7e89f75a <-- trapping instruction 31: 89 c1 mov %eax,%ecx 33: 48 8b 34 24 mov (%rsp),%rsi 37: 81 e1 00 01 00 00 and $0x100,%ecx 3d: 65 gs 3e: 48 rex.W 3f: 8b .byte 0x8b
Time | Kernel | Commit | Syzkaller | Config | Log | Report | Syz repro | C repro | VM info | Assets (help?) | Manager | Title |
---|---|---|---|---|---|---|---|---|---|---|---|---|
2022/02/03 22:47 | upstream | 1f2cfdd349b7 | 30646bfe | .config | console log | report | info | ci-upstream-kasan-gce-root | INFO: rcu detected stall in cleanup_net | |||
2021/11/12 06:21 | upstream | 5833291ab6de | 75b04091 | .config | console log | report | info | ci-upstream-kasan-gce-root | INFO: rcu detected stall in cleanup_net | |||
2021/10/27 19:31 | upstream | 1fc596a56b33 | 373bf66b | .config | console log | report | info | ci-upstream-kasan-gce-smack-root | INFO: rcu detected stall in cleanup_net | |||
2021/10/12 06:41 | upstream | fa5878760579 | 838e7e2c | .config | console log | report | info | ci-upstream-kasan-gce-root | INFO: rcu detected stall in cleanup_net | |||
2021/10/11 13:18 | upstream | 64570fbc14f8 | 838e7e2c | .config | console log | report | info | ci-upstream-kasan-gce-root | INFO: rcu detected stall in cleanup_net | |||
2021/10/03 16:16 | upstream | 7b66f4393ad4 | db0f5787 | .config | console log | report | info | ci-upstream-kasan-gce-root | INFO: rcu detected stall in cleanup_net | |||
2021/08/09 00:42 | upstream | 36a21d51725a | 6972b106 | .config | console log | report | info | ci-upstream-kasan-gce | INFO: rcu detected stall in cleanup_net | |||
2021/08/05 23:03 | upstream | 902e7f373fff | d2d6e680 | .config | console log | report | info | ci-upstream-kasan-gce-smack-root | INFO: rcu detected stall in cleanup_net | |||
2021/07/19 04:42 | upstream | 2734d6c1b1a0 | f115ae98 | .config | console log | report | info | ci-upstream-kasan-gce-smack-root | INFO: rcu detected stall in cleanup_net | |||
2021/07/11 20:16 | upstream | 98f7fdced2e0 | 8f5a7b8c | .config | console log | report | info | ci-upstream-kasan-gce-smack-root | INFO: rcu detected stall in cleanup_net | |||
2021/05/20 01:35 | upstream | 293837b9ac8d | a343ba6b | .config | console log | report | info | ci-upstream-kasan-gce-selinux-root | INFO: rcu detected stall in cleanup_net | |||
2021/12/07 20:00 | net-old | 2a62df369271 | 0230ba3e | .config | console log | report | info | ci-upstream-net-this-kasan-gce | INFO: rcu detected stall in cleanup_net | |||
2021/11/21 02:14 | net-old | 262ae1f9de4e | 4eb20a4e | .config | console log | report | info | ci-upstream-net-this-kasan-gce | INFO: rcu detected stall in cleanup_net | |||
2021/11/17 05:51 | net-old | 848e5d66fa31 | cafff8b6 | .config | console log | report | info | ci-upstream-net-this-kasan-gce | INFO: rcu detected stall in cleanup_net | |||
2021/11/09 11:23 | net-old | c45231a7668d | 8ab17e57 | .config | console log | report | info | ci-upstream-net-this-kasan-gce | INFO: rcu detected stall in cleanup_net | |||
2021/10/22 11:47 | net-old | 397430b50a36 | 55f90bc6 | .config | console log | report | info | ci-upstream-net-this-kasan-gce | INFO: rcu detected stall in cleanup_net | |||
2021/08/09 21:38 | net-old | 3125f26c5148 | 6972b106 | .config | console log | report | info | ci-upstream-net-this-kasan-gce | INFO: rcu detected stall in cleanup_net | |||
2021/07/31 21:03 | net-old | 8d67041228ac | 6c236867 | .config | console log | report | info | ci-upstream-net-this-kasan-gce | INFO: rcu detected stall in cleanup_net | |||
2022/01/15 06:31 | net-next-old | fe8152b38d3a | 723cfaf0 | .config | console log | report | info | ci-upstream-net-kasan-gce | INFO: rcu detected stall in cleanup_net | |||
2021/11/16 15:03 | net-next-old | 3ad4b7c81a99 | 600426bd | .config | console log | report | info | ci-upstream-net-kasan-gce | INFO: rcu detected stall in cleanup_net | |||
2021/11/12 20:57 | net-next-old | 5833291ab6de | 83f5c9b5 | .config | console log | report | info | ci-upstream-net-kasan-gce | INFO: rcu detected stall in cleanup_net | |||
2021/10/21 17:09 | net-next-old | dfcb63ce1de6 | c5cb7da8 | .config | console log | report | info | ci-upstream-net-kasan-gce | INFO: rcu detected stall in cleanup_net | |||
2021/10/01 11:32 | linux-next | a25006a77348 | 1d849ab4 | .config | console log | report | info | ci-upstream-linux-next-kasan-gce-root | INFO: rcu detected stall in cleanup_net | |||
2021/08/09 17:36 | linux-next | da454ebf578f | 6972b106 | .config | console log | report | info | ci-upstream-linux-next-kasan-gce-root | INFO: rcu detected stall in cleanup_net |