BUG: workqueue lockup - pool cpus=0 node=0 flags=0x0 nice=0 stuck for 42s!
Showing busy workqueues and worker pools:
workqueue events: flags=0x0
  pwq 0: cpus=0 node=0 flags=0x0 nice=0 active=6/256
    pending: perf_sched_delayed, vmstat_shepherd, cache_reap, defense_work_handler, defense_work_handler, defense_work_handler

======================================================
WARNING: possible circular locking dependency detected
4.18.0-rc2+ #29 Not tainted
------------------------------------------------------
ksoftirqd/0/9 is trying to acquire lock:
000000005d2e69ff (console_owner){-.-.}, at: log_next kernel/printk/printk.c:496 [inline]
000000005d2e69ff (console_owner){-.-.}, at: console_unlock+0x54e/0x10b0 kernel/printk/printk.c:2376

but task is already holding lock:
000000002246f071 (&(&pool->lock)->rlock){-.-.}, at: show_workqueue_state.cold.48+0xb16/0x15ec kernel/workqueue.c:4542

which lock already depends on the new lock.


the existing dependency chain (in reverse order) is:

-> #4 (&(&pool->lock)->rlock){-.-.}:
       __raw_spin_lock include/linux/spinlock_api_smp.h:142 [inline]
       _raw_spin_lock+0x2a/0x40 kernel/locking/spinlock.c:144
       spin_lock include/linux/spinlock.h:310 [inline]
       __queue_work+0x352/0x1410 kernel/workqueue.c:1417
       queue_work_on+0x19a/0x1e0 kernel/workqueue.c:1486
       queue_work include/linux/workqueue.h:512 [inline]
       schedule_work include/linux/workqueue.h:570 [inline]
       put_pwq+0x175/0x1c0 kernel/workqueue.c:1090
       put_pwq_unlocked.part.29+0x34/0x70 kernel/workqueue.c:1107
       put_pwq_unlocked kernel/workqueue.c:1101 [inline]
       destroy_workqueue+0x880/0x9d0 kernel/workqueue.c:4202
       tipc_topsrv_work_stop net/tipc/topsrv.c:641 [inline]
       tipc_topsrv_stop+0x4b1/0x6ce net/tipc/topsrv.c:700
       tipc_exit_net+0x15/0x40 net/tipc/core.c:100
       ops_exit_list.isra.7+0xb0/0x160 net/core/net_namespace.c:152
       cleanup_net+0x537/0xb50 net/core/net_namespace.c:523
       process_one_work+0xc73/0x1ba0 kernel/workqueue.c:2153
       worker_thread+0x189/0x13c0 kernel/workqueue.c:2296
       kthread+0x345/0x410 kernel/kthread.c:240
       ret_from_fork+0x3a/0x50 arch/x86/entry/entry_64.S:412

-> #3 (&pool->lock/1){-.-.}:
       __raw_spin_lock include/linux/spinlock_api_smp.h:142 [inline]
       _raw_spin_lock+0x2a/0x40 kernel/locking/spinlock.c:144
       spin_lock include/linux/spinlock.h:310 [inline]
       __queue_work+0x352/0x1410 kernel/workqueue.c:1417
       queue_work_on+0x19a/0x1e0 kernel/workqueue.c:1486
       queue_work include/linux/workqueue.h:512 [inline]
       tty_schedule_flip+0x14c/0x1d0 drivers/tty/tty_buffer.c:408
       tty_flip_buffer_push+0x15/0x20 drivers/tty/tty_buffer.c:547
       pty_write+0x19d/0x1f0 drivers/tty/pty.c:124
       n_tty_write+0xc5b/0x11a0 drivers/tty/n_tty.c:2340
       do_tty_write drivers/tty/tty_io.c:963 [inline]
       tty_write+0x45f/0xae0 drivers/tty/tty_io.c:1051
       __vfs_write+0x117/0x9f0 fs/read_write.c:485
       vfs_write+0x1f8/0x560 fs/read_write.c:549
       ksys_write+0x101/0x260 fs/read_write.c:598
       __do_sys_write fs/read_write.c:610 [inline]
       __se_sys_write fs/read_write.c:607 [inline]
       __x64_sys_write+0x73/0xb0 fs/read_write.c:607
       do_syscall_64+0x1b9/0x820 arch/x86/entry/common.c:290
       entry_SYSCALL_64_after_hwframe+0x49/0xbe

-> #2 (&(&port->lock)->rlock){-.-.}:
       __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline]
       _raw_spin_lock_irqsave+0x96/0xc0 kernel/locking/spinlock.c:152
       tty_port_tty_get+0x20/0x80 drivers/tty/tty_port.c:288
       tty_port_default_wakeup+0x15/0x40 drivers/tty/tty_port.c:47
       tty_port_tty_wakeup+0x5d/0x70 drivers/tty/tty_port.c:390
       uart_write_wakeup+0x44/0x60 drivers/tty/serial/serial_core.c:103
       serial8250_tx_chars+0x4be/0xb60 drivers/tty/serial/8250/8250_port.c:1808
       serial8250_handle_irq.part.25+0x1ee/0x280 drivers/tty/serial/8250/8250_port.c:1881
       serial8250_handle_irq drivers/tty/serial/8250/8250_port.c:1867 [inline]
       serial8250_default_handle_irq+0xc8/0x150 drivers/tty/serial/8250/8250_port.c:1897
       serial8250_interrupt+0xfa/0x1d0 drivers/tty/serial/8250/8250_core.c:125
       __handle_irq_event_percpu+0x1c8/0xaf0 kernel/irq/handle.c:149
       handle_irq_event_percpu+0xa0/0x1d0 kernel/irq/handle.c:189
       handle_irq_event+0xa7/0x135 kernel/irq/handle.c:206
       handle_edge_irq+0x20f/0x870 kernel/irq/chip.c:791
       generic_handle_irq_desc include/linux/irqdesc.h:154 [inline]
       handle_irq+0x18c/0x2e7 arch/x86/kernel/irq_64.c:77
       do_IRQ+0x78/0x190 arch/x86/kernel/irq.c:245
       ret_from_intr+0x0/0x1e
       native_safe_halt+0x6/0x10 arch/x86/include/asm/irqflags.h:54
       arch_safe_halt arch/x86/include/asm/paravirt.h:94 [inline]
       default_idle+0xc7/0x450 arch/x86/kernel/process.c:500
       arch_cpu_idle+0x10/0x20 arch/x86/kernel/process.c:491
       default_idle_call+0x6d/0x90 kernel/sched/idle.c:93
       cpuidle_idle_call kernel/sched/idle.c:153 [inline]
       do_idle+0x3aa/0x570 kernel/sched/idle.c:262
       cpu_startup_entry+0x10c/0x120 kernel/sched/idle.c:368
       start_secondary+0x433/0x5d0 arch/x86/kernel/smpboot.c:265
       secondary_startup_64+0xa5/0xb0 arch/x86/kernel/head_64.S:242

-> #1 (&port_lock_key){-.-.}:
       __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline]
       _raw_spin_lock_irqsave+0x96/0xc0 kernel/locking/spinlock.c:152
       serial8250_console_write+0x8d5/0xb00 drivers/tty/serial/8250/8250_port.c:3230
       univ8250_console_write+0x5f/0x70 drivers/tty/serial/8250/8250_core.c:590
       call_console_drivers kernel/printk/printk.c:1718 [inline]
       console_unlock+0xab1/0x10b0 kernel/printk/printk.c:2389
       vprintk_emit+0x6c6/0xdf0 kernel/printk/printk.c:1907
       vprintk_default+0x28/0x30 kernel/printk/printk.c:1948
       vprintk_func+0x7a/0xe7 kernel/printk/printk_safe.c:382
       printk+0xa7/0xcf kernel/printk/printk.c:1981
       register_console+0x7e7/0xc00 kernel/printk/printk.c:2704
       univ8250_console_init+0x3f/0x4b drivers/tty/serial/8250/8250_core.c:685
       console_init+0x6e1/0xa54 kernel/printk/printk.c:2788
       start_kernel+0x610/0x949 init/main.c:661
       x86_64_start_reservations+0x29/0x2b arch/x86/kernel/head64.c:452
       x86_64_start_kernel+0x76/0x79 arch/x86/kernel/head64.c:433
       secondary_startup_64+0xa5/0xb0 arch/x86/kernel/head_64.S:242

-> #0 (console_owner){-.-.}:
       lock_acquire+0x1e4/0x540 kernel/locking/lockdep.c:3924
       console_lock_spinning_enable kernel/printk/printk.c:1581 [inline]
       console_unlock+0x5bb/0x10b0 kernel/printk/printk.c:2386
       vprintk_emit+0x6c6/0xdf0 kernel/printk/printk.c:1907
       vprintk_default+0x28/0x30 kernel/printk/printk.c:1948
       vprintk_func+0x7a/0xe7 kernel/printk/printk_safe.c:382
       printk+0xa7/0xcf kernel/printk/printk.c:1981
       show_pwq kernel/workqueue.c:4449 [inline]
       show_workqueue_state.cold.48+0xcb8/0x15ec kernel/workqueue.c:4544
       wq_watchdog_timer_fn+0x709/0x830 kernel/workqueue.c:5556
       call_timer_fn+0x242/0x970 kernel/time/timer.c:1326
       expire_timers kernel/time/timer.c:1363 [inline]
       __run_timers+0x7a6/0xc70 kernel/time/timer.c:1666
       run_timer_softirq+0x60/0x70 kernel/time/timer.c:1694
       __do_softirq+0x2e8/0xb17 kernel/softirq.c:288
       run_ksoftirqd+0x86/0x100 kernel/softirq.c:649
       smpboot_thread_fn+0x417/0x870 kernel/smpboot.c:164
       kthread+0x345/0x410 kernel/kthread.c:240
       ret_from_fork+0x3a/0x50 arch/x86/entry/entry_64.S:412

other info that might help us debug this:

Chain exists of:
  console_owner --> &pool->lock/1 --> &(&pool->lock)->rlock

 Possible unsafe locking scenario:

       CPU0                    CPU1
       ----                    ----
  lock(&(&pool->lock)->rlock);
                               lock(&pool->lock/1);
                               lock(&(&pool->lock)->rlock);
  lock(console_owner);

 *** DEADLOCK ***

4 locks held by ksoftirqd/0/9:
 #0: 00000000a6c37730 ((&wq_watchdog_timer)){+.-.}, at: lockdep_copy_map include/linux/lockdep.h:178 [inline]
 #0: 00000000a6c37730 ((&wq_watchdog_timer)){+.-.}, at: call_timer_fn+0x1cd/0x970 kernel/time/timer.c:1316
 #1: 000000003e30d41e (rcu_read_lock_sched){....}, at: show_workqueue_state+0x0/0x1d0 kernel/workqueue.c:4408
 #2: 000000002246f071 (&(&pool->lock)->rlock){-.-.}, at: show_workqueue_state.cold.48+0xb16/0x15ec kernel/workqueue.c:4542
 #3: 00000000e7d0d77d (console_lock){+.+.}, at: console_trylock_spinning kernel/printk/printk.c:1643 [inline]
 #3: 00000000e7d0d77d (console_lock){+.+.}, at: vprintk_emit+0x6ad/0xdf0 kernel/printk/printk.c:1906

stack backtrace:
CPU: 0 PID: 9 Comm: ksoftirqd/0 Not tainted 4.18.0-rc2+ #29
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x1c9/0x2b4 lib/dump_stack.c:113
 print_circular_bug.isra.36.cold.57+0x1bd/0x27d kernel/locking/lockdep.c:1227
 check_prev_add kernel/locking/lockdep.c:1867 [inline]
 check_prevs_add kernel/locking/lockdep.c:1980 [inline]
 validate_chain kernel/locking/lockdep.c:2421 [inline]
 __lock_acquire+0x3449/0x5020 kernel/locking/lockdep.c:3435
 lock_acquire+0x1e4/0x540 kernel/locking/lockdep.c:3924
 console_lock_spinning_enable kernel/printk/printk.c:1581 [inline]
 console_unlock+0x5bb/0x10b0 kernel/printk/printk.c:2386
 vprintk_emit+0x6c6/0xdf0 kernel/printk/printk.c:1907
 vprintk_default+0x28/0x30 kernel/printk/printk.c:1948
 vprintk_func+0x7a/0xe7 kernel/printk/printk_safe.c:382
 printk+0xa7/0xcf kernel/printk/printk.c:1981
 show_pwq kernel/workqueue.c:4449 [inline]
 show_workqueue_state.cold.48+0xcb8/0x15ec kernel/workqueue.c:4544
 wq_watchdog_timer_fn+0x709/0x830 kernel/workqueue.c:5556
 call_timer_fn+0x242/0x970 kernel/time/timer.c:1326
 expire_timers kernel/time/timer.c:1363 [inline]
 __run_timers+0x7a6/0xc70 kernel/time/timer.c:1666
 run_timer_softirq+0x60/0x70 kernel/time/timer.c:1694
 __do_softirq+0x2e8/0xb17 kernel/softirq.c:288
 run_ksoftirqd+0x86/0x100 kernel/softirq.c:649
 smpboot_thread_fn+0x417/0x870 kernel/smpboot.c:164
 kthread+0x345/0x410 kernel/kthread.c:240
 ret_from_fork+0x3a/0x50 arch/x86/entry/entry_64.S:412
workqueue events_power_efficient: flags=0x80
  pwq 0: cpus=0 node=0 flags=0x0 nice=0 active=1/256
    pending: gc_worker
workqueue mm_percpu_wq: flags=0x8
  pwq 0: cpus=0 node=0 flags=0x0 nice=0 active=1/256
    pending: vmstat_update
workqueue kblockd: flags=0x18
  pwq 1: cpus=0 node=0 flags=0x0 nice=-20 active=2/256
    pending: blk_mq_requeue_work, blk_mq_timeout_work
sctp: [Deprecated]: syz-executor7 (pid 2853) Use of int in maxseg socket option.
Use struct sctp_assoc_value instead
sctp: [Deprecated]: syz-executor7 (pid 2853) Use of int in maxseg socket option.
Use struct sctp_assoc_value instead
sctp: [Deprecated]: syz-executor7 (pid 2912) Use of int in maxseg socket option.
Use struct sctp_assoc_value instead
sctp: [Deprecated]: syz-executor4 (pid 2944) Use of int in maxseg socket option.
Use struct sctp_assoc_value instead
sctp: [Deprecated]: syz-executor7 (pid 2958) Use of int in maxseg socket option.
Use struct sctp_assoc_value instead
sctp: [Deprecated]: syz-executor4 (pid 2981) Use of int in maxseg socket option.
Use struct sctp_assoc_value instead
sctp: [Deprecated]: syz-executor7 (pid 3001) Use of int in maxseg socket option.
Use struct sctp_assoc_value instead
sctp: [Deprecated]: syz-executor4 (pid 3021) Use of int in maxseg socket option.
Use struct sctp_assoc_value instead
sctp: [Deprecated]: syz-executor4 (pid 3060) Use of int in maxseg socket option.
Use struct sctp_assoc_value instead
sctp: [Deprecated]: syz-executor0 (pid 3076) Use of int in maxseg socket option.
Use struct sctp_assoc_value instead
FAULT_INJECTION: forcing a failure.
name failslab, interval 1, probability 0, space 0, times 0
CPU: 0 PID: 3218 Comm: syz-executor1 Not tainted 4.18.0-rc2+ #29
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x1c9/0x2b4 lib/dump_stack.c:113
 fail_dump lib/fault-inject.c:51 [inline]
 should_fail.cold.4+0xa/0x1a lib/fault-inject.c:149
 __should_failslab+0x124/0x180 mm/failslab.c:32
 should_failslab+0x9/0x14 mm/slab_common.c:1557
 slab_pre_alloc_hook mm/slab.h:423 [inline]
 slab_alloc mm/slab.c:3378 [inline]
 kmem_cache_alloc+0x2af/0x760 mm/slab.c:3552
 getname_flags+0xd0/0x5a0 fs/namei.c:140
 getname+0x19/0x20 fs/namei.c:211
 do_sys_open+0x3a2/0x760 fs/open.c:1095
 __do_compat_sys_openat fs/open.c:1147 [inline]
 __se_compat_sys_openat fs/open.c:1145 [inline]
 __ia32_compat_sys_openat+0x98/0xf0 fs/open.c:1145
 do_syscall_32_irqs_on arch/x86/entry/common.c:326 [inline]
 do_fast_syscall_32+0x34d/0xfb2 arch/x86/entry/common.c:397
 entry_SYSENTER_compat+0x70/0x7f arch/x86/entry/entry_64_compat.S:139
RIP: 0023:0xf7faecb9
Code: 55 08 8b 88 64 cd ff ff 8b 98 68 cd ff ff 89 c8 85 d2 74 02 89 0a 5b 5d c3 8b 04 24 c3 8b 1c 24 c3 51 52 55 89 e5 0f 34 cd 80 <5d> 5a 59 c3 90 90 90 90 eb 0d 90 90 90 90 90 90 90 90 90 90 90 90 
RSP: 002b:00000000f5faa0ac EFLAGS: 00000282 ORIG_RAX: 0000000000000127
RAX: ffffffffffffffda RBX: 00000000ffffff9c RCX: 0000000020000080
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
FAULT_INJECTION: forcing a failure.
name failslab, interval 1, probability 0, space 0, times 0
CPU: 0 PID: 3226 Comm: syz-executor7 Not tainted 4.18.0-rc2+ #29
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x1c9/0x2b4 lib/dump_stack.c:113
 fail_dump lib/fault-inject.c:51 [inline]
 should_fail.cold.4+0xa/0x1a lib/fault-inject.c:149
 __should_failslab+0x124/0x180 mm/failslab.c:32
 should_failslab+0x9/0x14 mm/slab_common.c:1557
 slab_pre_alloc_hook mm/slab.h:423 [inline]
 slab_alloc mm/slab.c:3378 [inline]
 kmem_cache_alloc_trace+0x2cb/0x780 mm/slab.c:3618
 kmalloc include/linux/slab.h:513 [inline]
 kzalloc include/linux/slab.h:707 [inline]
 perf_event_alloc.part.93+0x1a6/0x30b0 kernel/events/core.c:9921
FAULT_INJECTION: forcing a failure.
name fail_page_alloc, interval 1, probability 0, space 0, times 0
 perf_event_alloc kernel/events/core.c:10393 [inline]
 __do_sys_perf_event_open+0xab2/0x30f0 kernel/events/core.c:10494
 __se_sys_perf_event_open kernel/events/core.c:10383 [inline]
 __ia32_sys_perf_event_open+0xbd/0x140 kernel/events/core.c:10383
 do_syscall_32_irqs_on arch/x86/entry/common.c:326 [inline]
 do_fast_syscall_32+0x34d/0xfb2 arch/x86/entry/common.c:397
 entry_SYSENTER_compat+0x70/0x7f arch/x86/entry/entry_64_compat.S:139
RIP: 0023:0xf7fb4cb9
Code: 55 08 8b 88 64 cd ff ff 8b 98 68 cd ff ff 89 c8 85 d2 74 02 89 0a 5b 5d c3 8b 04 24 c3 8b 1c 24 c3 51 52 55 89 e5 0f 34 cd 80 <5d> 5a 59 c3 90 90 90 90 eb 0d 90 90 90 90 90 90 90 90 90 90 90 90 
RSP: 002b:00000000f5fb00ac EFLAGS: 00000282 ORIG_RAX: 0000000000000150
RAX: ffffffffffffffda RBX: 000000002025c000 RCX: 0000000000000000
RDX: 0000000000000000 RSI: 00000000ffffffff RDI: 0000000000000000
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
CPU: 1 PID: 3245 Comm: syz-executor1 Not tainted 4.18.0-rc2+ #29
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x1c9/0x2b4 lib/dump_stack.c:113
 fail_dump lib/fault-inject.c:51 [inline]
 should_fail.cold.4+0xa/0x1a lib/fault-inject.c:149
 should_fail_alloc_page mm/page_alloc.c:3057 [inline]
 prepare_alloc_pages mm/page_alloc.c:4325 [inline]
 __alloc_pages_nodemask+0x36e/0xdb0 mm/page_alloc.c:4363
 __alloc_pages include/linux/gfp.h:456 [inline]
 __alloc_pages_node include/linux/gfp.h:469 [inline]
 kmem_getpages mm/slab.c:1409 [inline]
 cache_grow_begin+0x91/0x710 mm/slab.c:2677
 cache_alloc_refill mm/slab.c:3044 [inline]
 ____cache_alloc mm/slab.c:3127 [inline]
 __do_cache_alloc mm/slab.c:3349 [inline]
 slab_alloc mm/slab.c:3384 [inline]
 kmem_cache_alloc+0x689/0x760 mm/slab.c:3552
 getname_flags+0xd0/0x5a0 fs/namei.c:140
 getname+0x19/0x20 fs/namei.c:211
 do_sys_open+0x3a2/0x760 fs/open.c:1095
 __do_compat_sys_openat fs/open.c:1147 [inline]
 __se_compat_sys_openat fs/open.c:1145 [inline]
 __ia32_compat_sys_openat+0x98/0xf0 fs/open.c:1145
 do_syscall_32_irqs_on arch/x86/entry/common.c:326 [inline]
 do_fast_syscall_32+0x34d/0xfb2 arch/x86/entry/common.c:397
 entry_SYSENTER_compat+0x70/0x7f arch/x86/entry/entry_64_compat.S:139
RIP: 0023:0xf7faecb9
Code: 55 08 8b 88 64 cd ff ff 8b 98 68 cd ff ff 89 c8 85 d2 74 02 89 0a 5b 5d c3 8b 04 24 c3 8b 1c 24 c3 51 52 55 89 e5 0f 34 cd 80 <5d> 5a 59 c3 90 90 90 90 eb 0d 90 90 90 90 90 90 90 90 90 90 90 90 
RSP: 002b:00000000f5faa0ac EFLAGS: 00000282 ORIG_RAX: 0000000000000127
RAX: ffffffffffffffda RBX: 00000000ffffff9c RCX: 0000000020000080
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
FAULT_INJECTION: forcing a failure.
name failslab, interval 1, probability 0, space 0, times 0
CPU: 0 PID: 3270 Comm: syz-executor1 Not tainted 4.18.0-rc2+ #29
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x1c9/0x2b4 lib/dump_stack.c:113
 fail_dump lib/fault-inject.c:51 [inline]
 should_fail.cold.4+0xa/0x1a lib/fault-inject.c:149
 __should_failslab+0x124/0x180 mm/failslab.c:32
 should_failslab+0x9/0x14 mm/slab_common.c:1557
 slab_pre_alloc_hook mm/slab.h:423 [inline]
 slab_alloc mm/slab.c:3378 [inline]
 kmem_cache_alloc+0x2af/0x760 mm/slab.c:3552
 kmem_cache_zalloc include/linux/slab.h:697 [inline]
 get_empty_filp+0x12d/0x530 fs/file_table.c:122
 path_openat+0x11e/0x4e10 fs/namei.c:3516
 do_filp_open+0x255/0x380 fs/namei.c:3574
 do_sys_open+0x584/0x760 fs/open.c:1101
 __do_compat_sys_openat fs/open.c:1147 [inline]
 __se_compat_sys_openat fs/open.c:1145 [inline]
 __ia32_compat_sys_openat+0x98/0xf0 fs/open.c:1145
 do_syscall_32_irqs_on arch/x86/entry/common.c:326 [inline]
 do_fast_syscall_32+0x34d/0xfb2 arch/x86/entry/common.c:397
 entry_SYSENTER_compat+0x70/0x7f arch/x86/entry/entry_64_compat.S:139
RIP: 0023:0xf7faecb9
Code: 55 08 8b 88 64 cd ff ff 8b 98 68 cd ff ff 89 c8 85 d2 74 02 89 0a 5b 5d c3 8b 04 24 c3 8b 1c 24 c3 51 52 55 89 e5 0f 34 cd 80 <5d> 5a 59 c3 90 90 90 90 eb 0d 90 90 90 90 90 90 90 90 90 90 90 90 
RSP: 002b:00000000f5faa0ac EFLAGS: 00000282 ORIG_RAX: 0000000000000127
RAX: ffffffffffffffda RBX: 00000000ffffff9c RCX: 0000000020000080
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
FAULT_INJECTION: forcing a failure.
name failslab, interval 1, probability 0, space 0, times 0
CPU: 1 PID: 3293 Comm: syz-executor7 Not tainted 4.18.0-rc2+ #29
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x1c9/0x2b4 lib/dump_stack.c:113
FAULT_INJECTION: forcing a failure.
name failslab, interval 1, probability 0, space 0, times 0
 fail_dump lib/fault-inject.c:51 [inline]
 should_fail.cold.4+0xa/0x1a lib/fault-inject.c:149
 __should_failslab+0x124/0x180 mm/failslab.c:32
 should_failslab+0x9/0x14 mm/slab_common.c:1557
 slab_pre_alloc_hook mm/slab.h:423 [inline]
 slab_alloc mm/slab.c:3378 [inline]
 kmem_cache_alloc_trace+0x2cb/0x780 mm/slab.c:3618
 kmalloc include/linux/slab.h:513 [inline]
 allocate_probes kernel/tracepoint.c:65 [inline]
 func_add kernel/tracepoint.c:120 [inline]
 tracepoint_add_func kernel/tracepoint.c:208 [inline]
 tracepoint_probe_register_prio+0x7b9/0xa60 kernel/tracepoint.c:282
 tracepoint_probe_register+0x2a/0x40 kernel/tracepoint.c:302
 trace_event_reg+0x19a/0x350 kernel/trace/trace_events.c:305
 perf_trace_event_reg kernel/trace/trace_event_perf.c:123 [inline]
 perf_trace_event_init+0x4fe/0x990 kernel/trace/trace_event_perf.c:198
 perf_trace_init+0x186/0x250 kernel/trace/trace_event_perf.c:222
 perf_tp_event_init+0xa6/0x120 kernel/events/core.c:8339
 perf_try_init_event+0x137/0x2f0 kernel/events/core.c:9733
 perf_init_event kernel/events/core.c:9771 [inline]
 perf_event_alloc.part.93+0x1264/0x30b0 kernel/events/core.c:10037
 perf_event_alloc kernel/events/core.c:10393 [inline]
 __do_sys_perf_event_open+0xab2/0x30f0 kernel/events/core.c:10494
 __se_sys_perf_event_open kernel/events/core.c:10383 [inline]
 __ia32_sys_perf_event_open+0xbd/0x140 kernel/events/core.c:10383
 do_syscall_32_irqs_on arch/x86/entry/common.c:326 [inline]
 do_fast_syscall_32+0x34d/0xfb2 arch/x86/entry/common.c:397
 entry_SYSENTER_compat+0x70/0x7f arch/x86/entry/entry_64_compat.S:139
RIP: 0023:0xf7fb4cb9
Code: 55 08 8b 88 64 cd ff ff 8b 98 68 cd ff ff 89 c8 85 d2 74 02 89 0a 5b 5d c3 8b 04 24 c3 8b 1c 24 c3 51 52 55 89 e5 0f 34 cd 80 <5d> 5a 59 c3 90 90 90 90 eb 0d 90 90 90 90 90 90 90 90 90 90 90 90 
RSP: 002b:00000000f5fb00ac EFLAGS: 00000282 ORIG_RAX: 0000000000000150
RAX: ffffffffffffffda RBX: 000000002025c000 RCX: 0000000000000000
RDX: 0000000000000000 RSI: 00000000ffffffff RDI: 0000000000000000
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
CPU: 0 PID: 3305 Comm: syz-executor1 Not tainted 4.18.0-rc2+ #29
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x1c9/0x2b4 lib/dump_stack.c:113
 fail_dump lib/fault-inject.c:51 [inline]
 should_fail.cold.4+0xa/0x1a lib/fault-inject.c:149
 __should_failslab+0x124/0x180 mm/failslab.c:32
 should_failslab+0x9/0x14 mm/slab_common.c:1557
 slab_pre_alloc_hook mm/slab.h:423 [inline]
 slab_alloc mm/slab.c:3378 [inline]
 kmem_cache_alloc_trace+0x4b/0x780 mm/slab.c:3618
 kmalloc include/linux/slab.h:513 [inline]
 proc_self_get_link+0x16f/0x1c0 fs/proc/self.c:22
 get_link fs/namei.c:1036 [inline]
 link_path_walk+0x1013/0x1540 fs/namei.c:2104
 path_openat+0x24e/0x4e10 fs/namei.c:3539
 do_filp_open+0x255/0x380 fs/namei.c:3574
 do_sys_open+0x584/0x760 fs/open.c:1101
 __do_compat_sys_openat fs/open.c:1147 [inline]
 __se_compat_sys_openat fs/open.c:1145 [inline]
 __ia32_compat_sys_openat+0x98/0xf0 fs/open.c:1145
 do_syscall_32_irqs_on arch/x86/entry/common.c:326 [inline]
 do_fast_syscall_32+0x34d/0xfb2 arch/x86/entry/common.c:397
 entry_SYSENTER_compat+0x70/0x7f arch/x86/entry/entry_64_compat.S:139
RIP: 0023:0xf7faecb9
Code: 55 08 8b 88 64 cd ff ff 8b 98 68 cd ff ff 89 c8 85 d2 74 02 89 0a 5b 5d c3 8b 04 24 c3 8b 1c 24 c3 51 52 55 89 e5 0f 34 cd 80 <5d> 5a 59 c3 90 90 90 90 eb 0d 90 90 90 90 90 90 90 90 90 90 90 90 
RSP: 002b:00000000f5faa0ac EFLAGS: 00000282 ORIG_RAX: 0000000000000127
RAX: ffffffffffffffda RBX: 00000000ffffff9c RCX: 0000000020000080
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
FAULT_INJECTION: forcing a failure.
name failslab, interval 1, probability 0, space 0, times 0
CPU: 0 PID: 3330 Comm: syz-executor7 Not tainted 4.18.0-rc2+ #29
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x1c9/0x2b4 lib/dump_stack.c:113
 fail_dump lib/fault-inject.c:51 [inline]
 should_fail.cold.4+0xa/0x1a lib/fault-inject.c:149
 __should_failslab+0x124/0x180 mm/failslab.c:32
 should_failslab+0x9/0x14 mm/slab_common.c:1557
 slab_pre_alloc_hook mm/slab.h:423 [inline]
 slab_alloc mm/slab.c:3378 [inline]
 kmem_cache_alloc+0x2af/0x760 mm/slab.c:3552
 __d_alloc+0xc8/0xd50 fs/dcache.c:1616
 d_alloc_pseudo+0x1d/0x30 fs/dcache.c:1744
 anon_inode_getfile+0x1ea/0x4e0 fs/anon_inodes.c:92
 __do_sys_perf_event_open+0x1799/0x30f0 kernel/events/core.c:10614
 __se_sys_perf_event_open kernel/events/core.c:10383 [inline]
 __ia32_sys_perf_event_open+0xbd/0x140 kernel/events/core.c:10383
 do_syscall_32_irqs_on arch/x86/entry/common.c:326 [inline]
 do_fast_syscall_32+0x34d/0xfb2 arch/x86/entry/common.c:397
 entry_SYSENTER_compat+0x70/0x7f arch/x86/entry/entry_64_compat.S:139
RIP: 0023:0xf7fb4cb9
Code: 55 08 8b 88 64 cd ff ff 8b 98 68 cd ff ff 89 c8 85 d2 74 02 89 0a 5b 5d c3 8b 04 24 c3 8b 1c 24 c3 51 52 55 89 e5 0f 34 cd 80 <5d> 5a 59 c3 90 90 90 90 eb 0d 90 90 90 90 90 90 90 90 90 90 90 90 
RSP: 002b:00000000f5fb00ac EFLAGS: 00000282 ORIG_RAX: 0000000000000150
RAX: ffffffffffffffda RBX: 000000002025c000 RCX: 0000000000000000
RDX: 0000000000000000 RSI: 00000000ffffffff RDI: 0000000000000000
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
sctp_getsockopt_maxseg: 10 callbacks suppressed
sctp: [Deprecated]: syz-executor6 (pid 3379) Use of int in maxseg socket option.
Use struct sctp_assoc_value instead
FAULT_INJECTION: forcing a failure.
name failslab, interval 1, probability 0, space 0, times 0
CPU: 0 PID: 3391 Comm: syz-executor7 Not tainted 4.18.0-rc2+ #29
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x1c9/0x2b4 lib/dump_stack.c:113
 fail_dump lib/fault-inject.c:51 [inline]
 should_fail.cold.4+0xa/0x1a lib/fault-inject.c:149
 __should_failslab+0x124/0x180 mm/failslab.c:32
 should_failslab+0x9/0x14 mm/slab_common.c:1557
 slab_pre_alloc_hook mm/slab.h:423 [inline]
 slab_alloc mm/slab.c:3378 [inline]
 kmem_cache_alloc+0x2af/0x760 mm/slab.c:3552
 __d_alloc+0xc8/0xd50 fs/dcache.c:1616
 d_alloc_pseudo+0x1d/0x30 fs/dcache.c:1744
 anon_inode_getfile+0x1ea/0x4e0 fs/anon_inodes.c:92
 __do_sys_perf_event_open+0x1799/0x30f0 kernel/events/core.c:10614
sctp: [Deprecated]: syz-executor6 (pid 3406) Use of int in maxseg socket option.
Use struct sctp_assoc_value instead
 __se_sys_perf_event_open kernel/events/core.c:10383 [inline]
 __ia32_sys_perf_event_open+0xbd/0x140 kernel/events/core.c:10383
 do_syscall_32_irqs_on arch/x86/entry/common.c:326 [inline]
 do_fast_syscall_32+0x34d/0xfb2 arch/x86/entry/common.c:397
 entry_SYSENTER_compat+0x70/0x7f arch/x86/entry/entry_64_compat.S:139
RIP: 0023:0xf7fb4cb9
Code: 55 08 8b 88 64 cd ff ff 8b 98 68 cd ff ff 89 c8 85 d2 74 02 89 0a 5b 5d c3 8b 04 24 c3 8b 1c 24 c3 51 52 55 89 e5 0f 34 cd 80 <5d> 5a 59 c3 90 90 90 90 eb 0d 90 90 90 90 90 90 90 90 90 90 90 90 
RSP: 002b:00000000f5fb00ac EFLAGS: 00000282 ORIG_RAX: 0000000000000150
RAX: ffffffffffffffda RBX: 000000002025c000 RCX: 0000000000000000
RDX: 0000000000000000 RSI: 00000000ffffffff RDI: 0000000000000000
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
FAULT_INJECTION: forcing a failure.
name failslab, interval 1, probability 0, space 0, times 0
CPU: 1 PID: 3434 Comm: syz-executor0 Not tainted 4.18.0-rc2+ #29
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x1c9/0x2b4 lib/dump_stack.c:113
 fail_dump lib/fault-inject.c:51 [inline]
 should_fail.cold.4+0xa/0x1a lib/fault-inject.c:149
 __should_failslab+0x124/0x180 mm/failslab.c:32
 should_failslab+0x9/0x14 mm/slab_common.c:1557
 slab_pre_alloc_hook mm/slab.h:423 [inline]
 slab_alloc mm/slab.c:3378 [inline]
 kmem_cache_alloc+0x2af/0x760 mm/slab.c:3552
 sock_alloc_inode+0x78/0x320 net/socket.c:243
 alloc_inode+0x63/0x190 fs/inode.c:210
 new_inode_pseudo+0x71/0x1a0 fs/inode.c:895
 sock_alloc+0x41/0x270 net/socket.c:567
 __sock_create+0x175/0x940 net/socket.c:1250
 sock_create net/socket.c:1326 [inline]
 __sys_socket+0x106/0x260 net/socket.c:1356
 __do_sys_socket net/socket.c:1365 [inline]
 __se_sys_socket net/socket.c:1363 [inline]
 __ia32_sys_socket+0x73/0xb0 net/socket.c:1363
 do_syscall_32_irqs_on arch/x86/entry/common.c:326 [inline]
 do_fast_syscall_32+0x34d/0xfb2 arch/x86/entry/common.c:397
 entry_SYSENTER_compat+0x70/0x7f arch/x86/entry/entry_64_compat.S:139
RIP: 0023:0xf7f9ecb9
Code: 55 08 8b 88 64 cd ff ff 8b 98 68 cd ff ff 89 c8 85 d2 74 02 89 0a 5b 5d c3 8b 04 24 c3 8b 1c 24 c3 51 52 55 89 e5 0f 34 cd 80 <5d> 5a 59 c3 90 90 90 90 eb 0d 90 90 90 90 90 90 90 90 90 90 90 90 
RSP: 002b:00000000f5f9a0ac EFLAGS: 00000282 ORIG_RAX: 0000000000000167
RAX: ffffffffffffffda RBX: 000000000000000a RCX: 0000000000000000
RDX: 0000000000000084 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
socket: no more sockets
FAULT_INJECTION: forcing a failure.
name failslab, interval 1, probability 0, space 0, times 0
CPU: 0 PID: 3494 Comm: syz-executor0 Not tainted 4.18.0-rc2+ #29
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x1c9/0x2b4 lib/dump_stack.c:113
 fail_dump lib/fault-inject.c:51 [inline]
 should_fail.cold.4+0xa/0x1a lib/fault-inject.c:149
 __should_failslab+0x124/0x180 mm/failslab.c:32
 should_failslab+0x9/0x14 mm/slab_common.c:1557
 slab_pre_alloc_hook mm/slab.h:423 [inline]
 slab_alloc mm/slab.c:3378 [inline]
 kmem_cache_alloc_trace+0x2cb/0x780 mm/slab.c:3618
 kmalloc include/linux/slab.h:513 [inline]
 sock_alloc_inode+0xbc/0x320 net/socket.c:246
 alloc_inode+0x63/0x190 fs/inode.c:210
 new_inode_pseudo+0x71/0x1a0 fs/inode.c:895
 sock_alloc+0x41/0x270 net/socket.c:567
 __sock_create+0x175/0x940 net/socket.c:1250
 sock_create net/socket.c:1326 [inline]
 __sys_socket+0x106/0x260 net/socket.c:1356
 __do_sys_socket net/socket.c:1365 [inline]
 __se_sys_socket net/socket.c:1363 [inline]
 __ia32_sys_socket+0x73/0xb0 net/socket.c:1363
 do_syscall_32_irqs_on arch/x86/entry/common.c:326 [inline]
 do_fast_syscall_32+0x34d/0xfb2 arch/x86/entry/common.c:397
 entry_SYSENTER_compat+0x70/0x7f arch/x86/entry/entry_64_compat.S:139
RIP: 0023:0xf7f9ecb9
Code: 55 08 8b 88 64 cd ff ff 8b 98 68 cd ff ff 89 c8 85 d2 74 02 89 0a 5b 5d c3 8b 04 24 c3 8b 1c 24 c3 51 52 55 89 e5 0f 34 cd 80 <5d> 5a 59 c3 90 90 90 90 eb 0d 90 90 90 90 90 90 90 90 90 90 90 90 
RSP: 002b:00000000f5f9a0ac EFLAGS: 00000282 ORIG_RAX: 0000000000000167
RAX: ffffffffffffffda RBX: 000000000000000a RCX: 0000000000000000
RDX: 0000000000000084 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
socket: no more sockets
sctp: [Deprecated]: syz-executor6 (pid 3511) Use of int in max_burst socket option.
Use struct sctp_assoc_value instead
FAULT_INJECTION: forcing a failure.
name failslab, interval 1, probability 0, space 0, times 0
CPU: 0 PID: 3544 Comm: syz-executor0 Not tainted 4.18.0-rc2+ #29
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x1c9/0x2b4 lib/dump_stack.c:113
 fail_dump lib/fault-inject.c:51 [inline]
 should_fail.cold.4+0xa/0x1a lib/fault-inject.c:149
 __should_failslab+0x124/0x180 mm/failslab.c:32
 should_failslab+0x9/0x14 mm/slab_common.c:1557
 slab_pre_alloc_hook mm/slab.h:423 [inline]
 slab_alloc mm/slab.c:3378 [inline]
 kmem_cache_alloc_trace+0x2cb/0x780 mm/slab.c:3618
 kmalloc include/linux/slab.h:513 [inline]
 call_modprobe kernel/kmod.c:80 [inline]
 __request_module+0x386/0xcdd kernel/kmod.c:171
 inet6_create+0xec0/0x1250 net/ipv6/af_inet6.c:156
 __sock_create+0x53c/0x940 net/socket.c:1286
 sock_create net/socket.c:1326 [inline]
 __sys_socket+0x106/0x260 net/socket.c:1356
 __do_sys_socket net/socket.c:1365 [inline]
 __se_sys_socket net/socket.c:1363 [inline]
 __ia32_sys_socket+0x73/0xb0 net/socket.c:1363
 do_syscall_32_irqs_on arch/x86/entry/common.c:326 [inline]
 do_fast_syscall_32+0x34d/0xfb2 arch/x86/entry/common.c:397
 entry_SYSENTER_compat+0x70/0x7f arch/x86/entry/entry_64_compat.S:139
RIP: 0023:0xf7f9ecb9
Code: 55 08 8b 88 64 cd ff ff 8b 98 68 cd ff ff 89 c8 85 d2 74 02 89 0a 5b 5d c3 8b 04 24 c3 8b 1c 24 c3 51 52 55 89 e5 0f 34 cd 80 <5d> 5a 59 c3 90 90 90 90 eb 0d 90 90 90 90 90 90 90 90 90 90 90 90 
RSP: 002b:00000000f5f9a0ac EFLAGS: 00000282 ORIG_RAX: 0000000000000167
RAX: ffffffffffffffda RBX: 000000000000000a RCX: 0000000000000000
RDX: 0000000000000084 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
FAULT_INJECTION: forcing a failure.
name failslab, interval 1, probability 0, space 0, times 0
CPU: 1 PID: 3600 Comm: syz-executor0 Not tainted 4.18.0-rc2+ #29
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x1c9/0x2b4 lib/dump_stack.c:113
 fail_dump lib/fault-inject.c:51 [inline]
 should_fail.cold.4+0xa/0x1a lib/fault-inject.c:149
 __should_failslab+0x124/0x180 mm/failslab.c:32
 should_failslab+0x9/0x14 mm/slab_common.c:1557
 slab_pre_alloc_hook mm/slab.h:423 [inline]
 slab_alloc mm/slab.c:3378 [inline]
 __do_kmalloc mm/slab.c:3716 [inline]
 __kmalloc_track_caller+0x2c4/0x760 mm/slab.c:3733
 kstrdup+0x39/0x70 mm/util.c:56
 call_modprobe kernel/kmod.c:84 [inline]
 __request_module+0x3a8/0xcdd kernel/kmod.c:171
 inet6_create+0xec0/0x1250 net/ipv6/af_inet6.c:156
 __sock_create+0x53c/0x940 net/socket.c:1286
 sock_create net/socket.c:1326 [inline]
 __sys_socket+0x106/0x260 net/socket.c:1356
 __do_sys_socket net/socket.c:1365 [inline]
 __se_sys_socket net/socket.c:1363 [inline]
 __ia32_sys_socket+0x73/0xb0 net/socket.c:1363
 do_syscall_32_irqs_on arch/x86/entry/common.c:326 [inline]
 do_fast_syscall_32+0x34d/0xfb2 arch/x86/entry/common.c:397
 entry_SYSENTER_compat+0x70/0x7f arch/x86/entry/entry_64_compat.S:139
RIP: 0023:0xf7f9ecb9
Code: 55 08 8b 88 64 cd ff ff 8b 98 68 cd ff ff 89 c8 85 d2 74 02 89 0a 5b 5d c3 8b 04 24 c3 8b 1c 24 c3 51 52 55 89 e5 0f 34 cd 80 <5d> 5a 59 c3 90 90 90 90 eb 0d 90 90 90 90 90 90 90 90 90 90 90 90 
RSP: 002b:00000000f5f9a0ac EFLAGS: 00000282 ORIG_RAX: 0000000000000167
RAX: ffffffffffffffda RBX: 000000000000000a RCX: 0000000000000000
RDX: 0000000000000084 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
FAULT_INJECTION: forcing a failure.
name failslab, interval 1, probability 0, space 0, times 0
CPU: 0 PID: 3652 Comm: syz-executor0 Not tainted 4.18.0-rc2+ #29
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x1c9/0x2b4 lib/dump_stack.c:113
 fail_dump lib/fault-inject.c:51 [inline]
 should_fail.cold.4+0xa/0x1a lib/fault-inject.c:149
 __should_failslab+0x124/0x180 mm/failslab.c:32
 should_failslab+0x9/0x14 mm/slab_common.c:1557
 slab_pre_alloc_hook mm/slab.h:423 [inline]
 slab_alloc mm/slab.c:3378 [inline]
 kmem_cache_alloc_trace+0x2cb/0x780 mm/slab.c:3618
 kmalloc include/linux/slab.h:513 [inline]
 kzalloc include/linux/slab.h:707 [inline]
 call_usermodehelper_setup+0xfb/0x420 kernel/umh.c:381
 call_modprobe kernel/kmod.c:94 [inline]
 __request_module+0x49a/0xcdd kernel/kmod.c:171
 inet6_create+0xec0/0x1250 net/ipv6/af_inet6.c:156
 __sock_create+0x53c/0x940 net/socket.c:1286
 sock_create net/socket.c:1326 [inline]
 __sys_socket+0x106/0x260 net/socket.c:1356
 __do_sys_socket net/socket.c:1365 [inline]
 __se_sys_socket net/socket.c:1363 [inline]
 __ia32_sys_socket+0x73/0xb0 net/socket.c:1363
 do_syscall_32_irqs_on arch/x86/entry/common.c:326 [inline]
 do_fast_syscall_32+0x34d/0xfb2 arch/x86/entry/common.c:397
 entry_SYSENTER_compat+0x70/0x7f arch/x86/entry/entry_64_compat.S:139
RIP: 0023:0xf7f9ecb9
Code: 55 08 8b 88 64 cd ff ff 8b 98 68 cd ff ff 89 c8 85 d2 74 02 89 0a 5b 5d c3 8b 04 24 c3 8b 1c 24 c3 51 52 55 89 e5 0f 34 cd 80 <5d> 5a 59 c3 90 90 90 90 eb 0d 90 90 90 90 90 90 90 90 90 90 90 90 
RSP: 002b:00000000f5f9a0ac EFLAGS: 00000282 ORIG_RAX: 0000000000000167
RAX: ffffffffffffffda RBX: 000000000000000a RCX: 0000000000000000
RDX: 0000000000000084 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000