TITLE: INFO: task hung in corrupted
ALT: hang in corrupted
TYPE: HANG
CORRUPTED: Y
PANICKED: Y

[ 1528.243421][ T1040] INFO: task syz-executor.1:16255 blocked for more than 143 seconds.
[ 1528.251530][ T1040]       Not tainted 5.1.0-rc2+ #145
[ 1528.293299][ T1040] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[ 1528.302029][ T1040] syz-executor.1  D30032 16255  25626 0x00000004
[ 1528.343661][ T1040] Call Trace:
[ 1528.347041][ T1040]  __schedule+0x817/0x1cc0
[ 1528.351476][ T1040]  ? __sched_text_start+0x8/0x8
[ 1528.368405][ T1040]  ? rwsem_down_write_failed+0x764/0xc30
[ 1528.374100][ T1040]  ? _raw_spin_unlock_irq+0x28/0x90
[ 1528.379320][ T1040]  ? lockdep_hardirqs_on+0x418/0x5d0
[ 1528.444673][ T1040]  schedule+0x92/0x180
[ 1528.448795][ T1040]  rwsem_down_write_failed+0x774/0xc30
[ 1528.460200][ T1040]  ? pcpu_alloc+0x49a/0x12e0
[ 1528.465042][ T1040]  ? rwsem_down_read_failed+0x420/0x420
[ 1528.470605][ T1040]  ? mark_held_locks+0xf0/0xf0
[ 1528.522754][ T1040]  ? _raw_spin_unlock_irqrestore+0x6b/0xe0
[ 1528.528667][ T1040]  ? __kasan_kmalloc.constprop.0+0xa3/0xe0
[ 1528.556092][ T1040]  ? kasan_check_write+0x14/0x20
[ 1528.561082][ T1040]  ? _raw_spin_unlock_irq+0x28/0x90
[ 1528.596694][ T1040]  ? get_signal+0x331/0x1d50
[ 1528.601347][ T1040]  ? _raw_spin_unlock_irq+0x28/0x90
[ 1528.606635][ T1040]  ? do_group_exit+0x135/0x370
[ 1528.611421][ T1040]  ? get_signal+0x399/0x1d50
[ 1528.629945][ T1040]  ? find_held_lock+0x35/0x130
[ 1528.634838][ T1040]  ? __fd_install+0x1bc/0x640
[ 1528.663122][ T1040]  ? do_signal+0x87/0x1940
[ 1528.667653][ T1040]  ? kasan_check_read+0x11/0x20
[ 1528.672523][ T1040]  ? setup_sigcontext+0x7d0/0x7d0
[ 1528.699026][ T1040]  ? __fd_install+0x200/0x640
[ 1528.704712][ T1040]  ? fd_install+0x4d/0x60
[ 1528.710023][ T1040]  ? exit_to_usermode_loop+0x43/0x2c0
[ 1528.743543][ T1040]  ? do_syscall_64+0x52d/0x610
[ 1528.748358][ T1040]  ? exit_to_usermode_loop+0x43/0x2c0
[ 1528.775671][ T1040]  ? lockdep_hardirqs_on+0x418/0x5d0
[ 1528.781014][ T1040]  ? trace_hardirqs_on+0x67/0x230
[ 1528.807510][ T1040]  ? exit_to_usermode_loop+0x244/0x2c0
[ 1528.813031][ T1040]  ? do_syscall_64+0x52d/0x610
[ 1528.838653][ T1040]  ? entry_SYSCALL_64_after_hwframe+0x49/0xbe
[ 1528.851968][ T1040] 
[ 1528.851968][ T1040] Showing all locks held in the system:
[ 1528.859759][ T1040] 5 locks held by ksoftirqd/0/9:
[ 1528.887515][ T1040] 1 lock held by khungtaskd/1040:
[ 1528.892568][ T1040]  #0: 000000005ada4f73 (rcu_read_lock){....}, at: debug_show_all_locks+0x5f/0x27e
[ 1528.919659][ T1040] 1 lock held by rsyslogd/7655:
[ 1528.945939][ T1040]  #0: 00000000b568feec (&f->f_pos_lock){+.+.}, at: __fdget_pos+0xee/0x110
[ 1528.960950][ T1040] 2 locks held by getty/7745:
[ 1528.977945][ T1040]  #0: 00000000c9276939 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40
[ 1529.000692][ T1040]  #1: 0000000087215bf6 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1b70
[ 1529.040894][ T1040] 2 locks held by getty/7746:
[ 1529.045884][ T1040]  #0: 000000004e485cd2 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40
[ 1529.067971][ T1040]  #1: 00000000cf426c42 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1b70
[ 1529.099853][ T1040] 2 locks held by getty/7747:
[ 1529.104656][ T1040]  #0: 0000000098f27dcb (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40
[ 1529.113670][ T1040]  #1: 000000006858ae28 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1b70
[ 1529.134723][ T1040] 2 locks held by getty/7748:
[ 1529.139426][ T1040]  #0: 0000000034d49e2c (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40
[ 1529.173500][ T1040]  #1: 000000009849c19f (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1b70
[ 1529.183119][ T1040] 2 locks held by getty/7749:
[ 1529.222857][ T1040]  #0: 000000009c42e2a3 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40
[ 1529.266466][ T1040]  #1: 00000000e813d07c (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1b70
[ 1529.282348][ T1040] 2 locks held by getty/7750:
[ 1529.315017][ T1040]  #0: 000000005ad08129 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40
[ 1529.354526][ T1040]  #1: 000000008258667c (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1b70
[ 1529.378666][ T1040] 2 locks held by getty/7751:
[ 1529.383422][ T1040]  #0: 00000000b7565bcd (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40
[ 1529.392381][ T1040]  #1: 000000004fb98a7b (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1b70
[ 1529.423950][ T1040] 3 locks held by kworker/u4:5/7991:
[ 1529.429267][ T1040]  #0: 00000000d0c7c4a3 ((wq_completion)netns){+.+.}, at: process_one_work+0x87e/0x1790
[ 1529.447408][ T1040]  #1: 00000000bc73b84c (net_cleanup_work){+.+.}, at: process_one_work+0x8b4/0x1790
[ 1529.472163][ T1040]  #2: 000000005132ec00 (rcu_state.barrier_mutex){+.+.}, at: rcu_barrier+0x30/0x270
[ 1529.521195][ T1040] 
[ 1529.529867][ T1040] =============================================
[ 1529.529867][ T1040] 
[ 1529.558744][ T1040] NMI backtrace for cpu 0
[ 1529.563104][ T1040] CPU: 0 PID: 1040 Comm: khungtaskd Not tainted 5.1.0-rc2+ #145
[ 1529.570738][ T1040] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[ 1529.580794][ T1040] Call Trace:
[ 1529.584099][ T1040]  dump_stack+0x172/0x1f0
[ 1529.588453][ T1040]  nmi_cpu_backtrace.cold+0x63/0xa4
[ 1529.593743][ T1040]  ? lapic_can_unplug_cpu.cold+0x38/0x38
[ 1529.599563][ T1040]  nmi_trigger_cpumask_backtrace+0x1be/0x236
[ 1529.605575][ T1040]  arch_trigger_cpumask_backtrace+0x14/0x20
[ 1529.611482][ T1040]  watchdog+0x9b7/0xec0
[ 1529.615653][ T1040]  kthread+0x357/0x430
[ 1529.619732][ T1040]  ? reset_hung_task_detector+0x30/0x30
[ 1529.625285][ T1040]  ? kthread_cancel_delayed_work_sync+0x20/0x20
[ 1529.631551][ T1040]  ret_from_fork+0x3a/0x50
[ 1529.636063][ T1040] Sending NMI from CPU 0 to CPUs 1:
[ 1529.642216][    C1] NMI backtrace for cpu 1
[ 1529.642222][    C1] CPU: 1 PID: 16 Comm: ksoftirqd/1 Not tainted 5.1.0-rc2+ #145
[ 1529.642229][    C1] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[ 1529.642233][    C1] RIP: 0010:unwind_next_frame.part.0+0xf1/0xa20
[ 1529.642245][    C1] Code: 4c 89 da 48 c1 ea 03 80 3c 02 00 0f 85 2c 05 00 00 4c 8d 53 28 4c 8b 73 38 48 b8 00 00 00 00 00 fc ff df 4c 89 d2 48 c1 ea 03 <80> 3c 02 00 0f 85 7c 05 00 00 48 b8 00 00 00 00 00 fc ff df 48 8b
[ 1529.642249][    C1] RSP: 0018:ffff8880aa2c7498 EFLAGS: 00000802
[ 1529.642257][    C1] RAX: dffffc0000000000 RBX: ffff8880aa2c75a8 RCX: ffff8880aa2c7520
[ 1529.642263][    C1] RDX: 1ffff11015458eba RSI: 0000000000000000 RDI: ffff8880aa2c75a8
[ 1529.642268][    C1] RBP: ffff8880aa2c7548 R08: ffff8880aa2c75d0 R09: ffff8880aa2c7600
[ 1529.642273][    C1] R10: ffff8880aa2c75d0 R11: ffff8880aa2c75e0 R12: 1ffff11015458e98
[ 1529.642279][    C1] R13: 0000000000000000 R14: ffff8880aa2c7598 R15: ffff8880aa2c75a8
[ 1529.642284][    C1] FS:  0000000000000000(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000
[ 1529.642289][    C1] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1529.642294][    C1] CR2: ffffffffff600400 CR3: 000000008f6d3000 CR4: 00000000001406e0
[ 1529.642297][    C1] Call Trace:
[ 1529.642301][    C1]  ? unwind_dump+0x100/0x100
[ 1529.642315][    C1]  ? find_held_lock+0x35/0x130
[ 1529.642319][    C1]  ? ip6_pol_route+0x39c/0x1040
[ 1529.642322][    C1]  __unwind_start+0x1f6/0x3d0
[ 1529.642326][    C1]  ? ip6_mc_input+0x9ee/0xf30
[ 1529.642330][    C1]  __save_stack_trace+0x5c/0x100
[ 1529.642334][    C1]  ? __save_stack_trace+0x5c/0x100
[ 1529.642337][    C1]  save_stack_trace+0x1a/0x20
[ 1529.642341][    C1]  save_stack+0x45/0xd0
[ 1529.642345][    C1]  ? rt6_multipath_hash+0x1ba/0xe40
[ 1529.642349][    C1]  ? debug_check_no_obj_freed+0x200/0x464
[ 1529.642353][    C1]  ? find_held_lock+0x35/0x130
[ 1529.642357][    C1]  ? debug_check_no_obj_freed+0x200/0x464
[ 1529.642360][    C1]  ? kasan_check_write+0x14/0x20
[ 1529.642364][    C1]  ? lock_downgrade+0x880/0x880
[ 1529.642368][    C1]  ? trace_hardirqs_off+0x62/0x220
[ 1529.642371][    C1]  ? kasan_check_read+0x11/0x20
[ 1529.642376][    C1]  ? _raw_spin_unlock_irqrestore+0xa4/0xe0
[ 1529.642380][    C1]  ? debug_check_no_obj_freed+0x200/0x464
[ 1529.642384][    C1]  ? __local_bh_enable_ip+0x15a/0x270
[ 1529.642388][    C1]  ? __sanitizer_cov_trace_const_cmp8+0x18/0x20
[ 1529.642392][    C1]  ? __phys_addr+0xa4/0x120
[ 1529.642396][    C1]  ? kfree_skbmem+0xc5/0x150
[ 1529.642400][    C1]  __kasan_slab_free+0x102/0x150
[ 1529.642403][    C1]  ? kfree_skbmem+0xc5/0x150
[ 1529.642407][    C1]  kasan_slab_free+0xe/0x10
[ 1529.642410][    C1]  kmem_cache_free+0x86/0x260
[ 1529.642414][    C1]  kfree_skbmem+0xc5/0x150
[ 1529.642417][    C1]  kfree_skb+0xf0/0x390
[ 1529.642421][    C1]  ip6_mc_input+0x9ee/0xf30
[ 1529.642425][    C1]  ? ip6_input+0x3f0/0x3f0
[ 1529.642428][    C1]  ip6_rcv_finish+0x1e7/0x320
[ 1529.642432][    C1]  ipv6_rcv+0x10e/0x420
[ 1529.642436][    C1]  ? ip6_rcv_core.isra.0+0x1c00/0x1c00
[ 1529.642440][    C1]  ? ip6_rcv_finish_core.isra.0+0x590/0x590
[ 1529.642444][    C1]  ? mark_held_locks+0xf0/0xf0
[ 1529.642448][    C1]  ? ip6_rcv_core.isra.0+0x1c00/0x1c00
[ 1529.642452][    C1]  __netif_receive_skb_one_core+0x115/0x1a0
[ 1529.642456][    C1]  ? __netif_receive_skb_core+0x3040/0x3040
[ 1529.642460][    C1]  ? lock_acquire+0x16f/0x3f0
[ 1529.642465][    C1]  ? __sanitizer_cov_trace_const_cmp4+0x16/0x20
[ 1529.642468][    C1]  __netif_receive_skb+0x2c/0x1c0
[ 1529.642472][    C1]  process_backlog+0x206/0x750
[ 1529.642476][    C1]  ? net_rx_action+0x27b/0x1070
[ 1529.642480][    C1]  ? lockdep_hardirqs_on+0x19e/0x5d0
[ 1529.642483][    C1]  net_rx_action+0x4fa/0x1070
[ 1529.642487][    C1]  ? napi_complete_done+0x4b0/0x4b0
[ 1529.642491][    C1]  ? sched_clock+0x2e/0x50
[ 1529.642495][    C1]  ? __sanitizer_cov_trace_const_cmp4+0x16/0x20
[ 1529.642499][    C1]  __do_softirq+0x266/0x95a
[ 1529.642503][    C1]  ? takeover_tasklets+0x7b0/0x7b0
[ 1529.642506][    C1]  run_ksoftirqd+0x8e/0x110
[ 1529.642510][    C1]  smpboot_thread_fn+0x6ab/0xa10
[ 1529.642514][    C1]  ? sort_range+0x30/0x30
[ 1529.642518][    C1]  ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20
[ 1529.642522][    C1]  ? __kthread_parkme+0xfb/0x1b0
[ 1529.642526][    C1]  kthread+0x357/0x430
[ 1529.642529][    C1]  ? sort_range+0x30/0x30
[ 1529.642534][    C1]  ? kthread_cancel_delayed_work_sync+0x20/0x20
[ 1529.642537][    C1]  ret_from_fork+0x3a/0x50
[ 1529.767317][ T1040] Kernel panic - not syncing: hung_task: blocked tasks
[ 1530.069534][ T1040] CPU: 0 PID: 1040 Comm: khungtaskd Not tainted 5.1.0-rc2+ #145
[ 1530.077164][ T1040] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[ 1530.087315][ T1040] Call Trace:
[ 1530.090619][ T1040]  dump_stack+0x172/0x1f0
[ 1530.095018][ T1040]  panic+0x2cb/0x65c
[ 1530.098927][ T1040]  ? __warn_printk+0xf3/0xf3
[ 1530.103525][ T1040]  ? lapic_can_unplug_cpu.cold+0x38/0x38
[ 1530.109174][ T1040]  ? ___preempt_schedule+0x16/0x18
[ 1530.114318][ T1040]  ? nmi_trigger_cpumask_backtrace+0x19e/0x236
[ 1530.120492][ T1040]  ? nmi_trigger_cpumask_backtrace+0x1fa/0x236
[ 1530.126655][ T1040]  ? nmi_trigger_cpumask_backtrace+0x204/0x236
[ 1530.132818][ T1040]  ? nmi_trigger_cpumask_backtrace+0x19e/0x236
[ 1530.138987][ T1040]  watchdog+0x9c8/0xec0
[ 1530.143174][ T1040]  kthread+0x357/0x430
[ 1530.147253][ T1040]  ? reset_hung_task_detector+0x30/0x30
[ 1530.152804][ T1040]  ? kthread_cancel_delayed_work_sync+0x20/0x20
[ 1530.159471][ T1040]  ret_from_fork+0x3a/0x50
[ 1530.164973][ T1040] Kernel Offset: disabled
[ 1530.169298][ T1040] Rebooting in 86400 seconds..
