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rcu: INFO: rcu_preempt self-detected stall on CPU rcu: 0-....: (10499 ticks this GP) idle=083/1/0x4000000000000000 softirq=170187/170187 fqs=4881 (t=10500 jiffies g=242349 q=1098) NMI backtrace for cpu 0 CPU: 0 PID: 8138 Comm: syz-executor.4 Not tainted 5.16.0-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: <IRQ> __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x1dc/0x2d8 lib/dump_stack.c:106 nmi_cpu_backtrace+0x45f/0x490 lib/nmi_backtrace.c:111 nmi_trigger_cpumask_backtrace+0x16a/0x280 lib/nmi_backtrace.c:62 trigger_single_cpu_backtrace include/linux/nmi.h:164 [inline] rcu_dump_cpu_stacks+0x22d/0x390 kernel/rcu/tree_stall.h:343 print_cpu_stall kernel/rcu/tree_stall.h:627 [inline] check_cpu_stall kernel/rcu/tree_stall.h:711 [inline] rcu_pending kernel/rcu/tree.c:3878 [inline] rcu_sched_clock_irq+0x1e33/0x2bc0 kernel/rcu/tree.c:2597 update_process_times+0x197/0x200 kernel/time/timer.c:1785 tick_sched_handle kernel/time/tick-sched.c:226 [inline] tick_sched_timer+0x27d/0x420 kernel/time/tick-sched.c:1428 __run_hrtimer kernel/time/hrtimer.c:1685 [inline] __hrtimer_run_queues+0x4cb/0xa60 kernel/time/hrtimer.c:1749 hrtimer_interrupt+0x3b3/0x1040 kernel/time/hrtimer.c:1811 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1086 [inline] __sysvec_apic_timer_interrupt+0xf9/0x270 arch/x86/kernel/apic/apic.c:1103 sysvec_apic_timer_interrupt+0x8c/0xb0 arch/x86/kernel/apic/apic.c:1097 </IRQ> <TASK> asm_sysvec_apic_timer_interrupt+0x12/0x20 RIP: 0010:__raw_spin_unlock_irq include/linux/spinlock_api_smp.h:160 [inline] RIP: 0010:_raw_spin_unlock_irq+0x25/0x40 kernel/locking/spinlock.c:202 Code: 71 44 fd ff 90 53 48 89 fb 48 83 c7 18 48 8b 74 24 08 e8 3e c8 58 f7 48 89 df e8 46 79 5a f7 e8 b1 ca 7d f7 fb bf 01 00 00 00 <e8> 06 d2 4c f7 65 8b 05 57 0b f5 75 85 c0 74 02 5b c3 e8 bc f4 f2 RSP: 0018:ffffc9000472eef0 EFLAGS: 00000286 RAX: 44b2368431610e00 RBX: ffffffff8cc5c8d8 RCX: ffffffff81668291 RDX: dffffc0000000000 RSI: 0000000000000001 RDI: 0000000000000001 RBP: ffffc9000472f130 R08: dffffc0000000000 R09: fffffbfff1ff3dde R10: fffffbfff1ff3dde R11: 0000000000000000 R12: ffffc9000472f000 R13: dffffc0000000000 R14: ffffffff8cc5c8c0 R15: 0000000000000006 rwsem_down_write_slowpath+0xcbd/0x1480 kernel/locking/rwsem.c:1127 __down_write_common kernel/locking/rwsem.c:1268 [inline] __down_write kernel/locking/rwsem.c:1277 [inline] down_write+0x163/0x170 kernel/locking/rwsem.c:1524 kernfs_add_one+0x54/0x600 fs/kernfs/dir.c:725 __kernfs_create_file+0x235/0x2e0 fs/kernfs/file.c:1014 sysfs_add_file_mode_ns+0x21d/0x330 fs/sysfs/file.c:294 create_files fs/sysfs/group.c:64 [inline] internal_create_group+0x54c/0xed0 fs/sysfs/group.c:148 internal_create_groups fs/sysfs/group.c:188 [inline] sysfs_create_groups+0x5d/0x130 fs/sysfs/group.c:214 setup_gid_attrs drivers/infiniband/core/sysfs.c:1168 [inline] ib_setup_port_attrs+0x15cb/0x23b0 drivers/infiniband/core/sysfs.c:1440 add_one_compat_dev+0x4e0/0x6d0 drivers/infiniband/core/device.c:968 rdma_dev_init_net+0x207/0x290 drivers/infiniband/core/device.c:1184 ops_init+0x313/0x430 net/core/net_namespace.c:140 setup_net+0x35b/0x9d0 net/core/net_namespace.c:326 copy_net_ns+0x359/0x5c0 net/core/net_namespace.c:470 create_new_namespaces+0x4ce/0xa00 kernel/nsproxy.c:110 copy_namespaces+0x333/0x390 kernel/nsproxy.c:178 copy_process+0x2968/0x5ca0 kernel/fork.c:2194 kernel_clone+0x22a/0x7e0 kernel/fork.c:2582 __do_sys_clone kernel/fork.c:2699 [inline] __se_sys_clone kernel/fork.c:2683 [inline] __x64_sys_clone+0x245/0x2b0 kernel/fork.c:2683 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x44/0xd0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x44/0xae RIP: 0033:0x7fa4f81eae99 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 bc ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007fa4f6b60168 EFLAGS: 00000246 ORIG_RAX: 0000000000000038 RAX: ffffffffffffffda RBX: 00007fa4f82fdf60 RCX: 00007fa4f81eae99 RDX: 0000000000000000 RSI: 0000000000000000 RDI: f70a86956630e51d RBP: 00007fa4f8244ff1 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fffca2d0a5f R14: 00007fa4f6b60300 R15: 0000000000022000 </TASK> ---------------- Code disassembly (best guess): 0: 71 44 jno 0x46 2: fd std 3: ff 90 53 48 89 fb callq *-0x476b7ad(%rax) 9: 48 83 c7 18 add $0x18,%rdi d: 48 8b 74 24 08 mov 0x8(%rsp),%rsi 12: e8 3e c8 58 f7 callq 0xf758c855 17: 48 89 df mov %rbx,%rdi 1a: e8 46 79 5a f7 callq 0xf75a7965 1f: e8 b1 ca 7d f7 callq 0xf77dcad5 24: fb sti 25: bf 01 00 00 00 mov $0x1,%edi * 2a: e8 06 d2 4c f7 callq 0xf74cd235 <-- trapping instruction 2f: 65 8b 05 57 0b f5 75 mov %gs:0x75f50b57(%rip),%eax # 0x75f50b8d 36: 85 c0 test %eax,%eax 38: 74 02 je 0x3c 3a: 5b pop %rbx 3b: c3 retq 3c: e8 .byte 0xe8 3d: bc .byte 0xbc 3e: f4 hlt 3f: f2 repnz
| Time | Kernel | Commit | Syzkaller | Config | Log | Report | Syz repro | C repro | VM info | Assets (help?) | Manager | Title |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2022/01/11 00:19 | upstream | 133d9c53c9dc | ddb0ab8c | .config | console log | report | info | ci-upstream-kasan-gce-smack-root | INFO: rcu detected stall in sys_clone | |||
| 2022/01/10 03:01 | upstream | df0cc57e057f | 2ca0d385 | .config | console log | report | info | ci-upstream-kasan-gce-smack-root | INFO: rcu detected stall in sys_clone | |||
| 2021/12/27 18:06 | upstream | a8ad9a2434dc | 5140bd58 | .config | console log | report | info | ci-upstream-kasan-gce-smack-root | INFO: rcu detected stall in sys_clone | |||
| 2021/10/07 21:05 | upstream | 4a16df549d23 | efe0f24d | .config | console log | report | info | ci-upstream-kasan-gce-smack-root | INFO: rcu detected stall in sys_clone | |||
| 2021/10/03 10:17 | upstream | 7b66f4393ad4 | db0f5787 | .config | console log | report | info | ci-upstream-kasan-gce-smack-root | INFO: rcu detected stall in sys_clone |