INFO: task syz-executor.0:28509 blocked for more than 140 seconds.
Not tainted 4.19.74 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
syz-executor.0 D29880 28509 7621 0x00000004
Call Trace:
context_switch kernel/sched/core.c:2826 [inline]
__schedule+0x866/0x1dc0 kernel/sched/core.c:3474
schedule+0x92/0x1c0 kernel/sched/core.c:3518
__rwsem_down_write_failed_common kernel/locking/rwsem-xadd.c:589 [inline]
rwsem_down_write_failed+0x774/0xc30 kernel/locking/rwsem-xadd.c:618
call_rwsem_down_write_failed+0x17/0x30 arch/x86/lib/rwsem.S:117
__down_write arch/x86/include/asm/rwsem.h:142 [inline]
down_write_nested+0x57/0x90 kernel/locking/rwsem.c:194
inode_lock_nested include/linux/fs.h:782 [inline]
filename_create+0x17c/0x4f0 fs/namei.c:3635
user_path_create fs/namei.c:3693 [inline]
do_mkdirat+0xb5/0x2a0 fs/namei.c:3831
__do_sys_mkdir fs/namei.c:3855 [inline]
__se_sys_mkdir fs/namei.c:3853 [inline]
__x64_sys_mkdir+0x5c/0x80 fs/namei.c:3853
do_syscall_64+0xfd/0x620 arch/x86/entry/common.c:293
entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x459a09
Code: 48 8b 74 24 08 48 8b 7c 24 20 48 8d 44 24 38 e9 8d f7 ff ff c6 44 24 38 00 c3 cc cc cc cc cc cc cc 48 8b 74 24 08 48 8b 5c 24 <10> 8a 44 24 18 4c 8d 44 24 20 e9 08 00 00 00 cc cc cc cc cc cc cc
RSP: 002b:00007fc2de37fc78 EFLAGS: 00000246 ORIG_RAX: 0000000000000053
RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 0000000000459a09
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000020000080
RBP: 000000000075bfc8 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007fc2de3806d4
R13: 00000000004bf1da R14: 00000000004daa30 R15: 00000000ffffffff
INFO: task syz-executor.0:28510 blocked for more than 140 seconds.
Not tainted 4.19.74 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
syz-executor.0 D29368 28510 7621 0x00000004
Call Trace:
context_switch kernel/sched/core.c:2826 [inline]
__schedule+0x866/0x1dc0 kernel/sched/core.c:3474
schedule+0x92/0x1c0 kernel/sched/core.c:3518
__rwsem_down_read_failed_common kernel/locking/rwsem-xadd.c:292 [inline]
rwsem_down_read_failed+0x21b/0x3c0 kernel/locking/rwsem-xadd.c:309
call_rwsem_down_read_failed+0x18/0x30 arch/x86/lib/rwsem.S:94
__down_read arch/x86/include/asm/rwsem.h:83 [inline]
down_read+0x49/0xb0 kernel/locking/rwsem.c:26
inode_lock_shared include/linux/fs.h:757 [inline]
lookup_slow+0x4a/0x80 fs/namei.c:1687
walk_component+0x747/0x2000 fs/namei.c:1810
lookup_last fs/namei.c:2273 [inline]
path_lookupat.isra.0+0x1f5/0x8d0 fs/namei.c:2318
filename_lookup+0x1b0/0x410 fs/namei.c:2348
user_path_at_empty+0x43/0x50 fs/namei.c:2608
user_path include/linux/namei.h:62 [inline]
do_mount+0x150/0x2bc0 fs/namespace.c:2739
ksys_mount+0xdb/0x150 fs/namespace.c:3015
__do_sys_mount fs/namespace.c:3029 [inline]
__se_sys_mount fs/namespace.c:3026 [inline]
__x64_sys_mount+0xbe/0x150 fs/namespace.c:3026
do_syscall_64+0xfd/0x620 arch/x86/entry/common.c:293
entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x459a09
Code: 48 8b 74 24 08 48 8b 7c 24 20 48 8d 44 24 38 e9 8d f7 ff ff c6 44 24 38 00 c3 cc cc cc cc cc cc cc 48 8b 74 24 08 48 8b 5c 24 <10> 8a 44 24 18 4c 8d 44 24 20 e9 08 00 00 00 cc cc cc cc cc cc cc
RSP: 002b:00007fc2de35ec78 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 0000000000459a09
RDX: 0000000020000300 RSI: 0000000020000200 RDI: 0000000000000000
RBP: 000000000075c070 R08: 00000000200005c0 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007fc2de35f6d4
R13: 00000000004c5fa0 R14: 00000000004dac40 R15: 00000000ffffffff
INFO: task syz-executor.0:28511 blocked for more than 140 seconds.
Not tainted 4.19.74 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
syz-executor.0 D29000 28511 7621 0x00000004
Call Trace:
context_switch kernel/sched/core.c:2826 [inline]
__schedule+0x866/0x1dc0 kernel/sched/core.c:3474
schedule+0x92/0x1c0 kernel/sched/core.c:3518
__rwsem_down_read_failed_common kernel/locking/rwsem-xadd.c:292 [inline]
rwsem_down_read_failed+0x21b/0x3c0 kernel/locking/rwsem-xadd.c:309
call_rwsem_down_read_failed+0x18/0x30 arch/x86/lib/rwsem.S:94
__down_read arch/x86/include/asm/rwsem.h:83 [inline]
down_read+0x49/0xb0 kernel/locking/rwsem.c:26
inode_lock_shared include/linux/fs.h:757 [inline]
lookup_slow+0x4a/0x80 fs/namei.c:1687
walk_component+0x747/0x2000 fs/namei.c:1810
lookup_last fs/namei.c:2273 [inline]
path_lookupat.isra.0+0x1f5/0x8d0 fs/namei.c:2318
filename_lookup+0x1b0/0x410 fs/namei.c:2348
user_path_at_empty+0x43/0x50 fs/namei.c:2608
user_path_at include/linux/namei.h:57 [inline]
ksys_chdir+0x98/0x1f0 fs/open.c:458
__do_sys_chdir fs/open.c:480 [inline]
__se_sys_chdir fs/open.c:478 [inline]
__x64_sys_chdir+0x31/0x40 fs/open.c:478
do_syscall_64+0xfd/0x620 arch/x86/entry/common.c:293
entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x459a09
Code: 48 8b 74 24 08 48 8b 7c 24 20 48 8d 44 24 38 e9 8d f7 ff ff c6 44 24 38 00 c3 cc cc cc cc cc cc cc 48 8b 74 24 08 48 8b 5c 24 <10> 8a 44 24 18 4c 8d 44 24 20 e9 08 00 00 00 cc cc cc cc cc cc cc
RSP: 002b:00007fc2de33dc78 EFLAGS: 00000246 ORIG_RAX: 0000000000000050
RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 0000000000459a09
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000020000000
RBP: 000000000075c118 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007fc2de33e6d4
R13: 00000000004bf243 R14: 00000000004d1cb8 R15: 00000000ffffffff
INFO: task syz-executor.0:28514 blocked for more than 140 seconds.
Not tainted 4.19.74 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
syz-executor.0 D29512 28514 7621 0x00000004
Call Trace:
context_switch kernel/sched/core.c:2826 [inline]
__schedule+0x866/0x1dc0 kernel/sched/core.c:3474
schedule+0x92/0x1c0 kernel/sched/core.c:3518
__rwsem_down_write_failed_common kernel/locking/rwsem-xadd.c:589 [inline]
rwsem_down_write_failed+0x774/0xc30 kernel/locking/rwsem-xadd.c:618
call_rwsem_down_write_failed+0x17/0x30 arch/x86/lib/rwsem.S:117
__down_write arch/x86/include/asm/rwsem.h:142 [inline]
down_write_nested+0x57/0x90 kernel/locking/rwsem.c:194
inode_lock_nested include/linux/fs.h:782 [inline]
filename_create+0x17c/0x4f0 fs/namei.c:3635
user_path_create fs/namei.c:3693 [inline]
do_mknodat fs/namei.c:3754 [inline]
do_mknodat+0x1a4/0x480 fs/namei.c:3742
__do_sys_mknod fs/namei.c:3794 [inline]
__se_sys_mknod fs/namei.c:3792 [inline]
__x64_sys_mknod+0x7b/0xb0 fs/namei.c:3792
do_syscall_64+0xfd/0x620 arch/x86/entry/common.c:293
entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x459a09
Code: 48 8b 74 24 08 48 8b 7c 24 20 48 8d 44 24 38 e9 8d f7 ff ff c6 44 24 38 00 c3 cc cc cc cc cc cc cc 48 8b 74 24 08 48 8b 5c 24 <10> 8a 44 24 18 4c 8d 44 24 20 e9 08 00 00 00 cc cc cc cc cc cc cc
RSP: 002b:00007fc2de2dac78 EFLAGS: 00000246 ORIG_RAX: 0000000000000085
RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000459a09
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000020000180
RBP: 000000000075c310 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007fc2de2db6d4
R13: 00000000004c5ebd R14: 00000000004daa90 R15: 00000000ffffffff
Showing all locks held in the system:
1 lock held by khungtaskd/1039:
#0: 000000003ba9ff18 (rcu_read_lock){....}, at: debug_show_all_locks+0x5f/0x27e kernel/locking/lockdep.c:4435
1 lock held by rsyslogd/7455:
#0: 000000006ad3cf67 (&f->f_pos_lock){+.+.}, at: __fdget_pos+0xee/0x110 fs/file.c:767
2 locks held by getty/7577:
#0: 000000003797306a (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:362
#1: 0000000099c2190a (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1b30 drivers/tty/n_tty.c:2154
2 locks held by getty/7578:
#0: 000000004559711b (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:362
#1: 0000000007ebd453 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1b30 drivers/tty/n_tty.c:2154
2 locks held by getty/7579:
#0: 000000002b286a64 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:362
#1: 00000000da1068e0 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1b30 drivers/tty/n_tty.c:2154
2 locks held by getty/7580:
#0: 00000000a8ce997d (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:362
#1: 000000001a739449 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1b30 drivers/tty/n_tty.c:2154
2 locks held by getty/7581:
#0: 000000002b0236e0 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:362
#1: 00000000324cf947 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1b30 drivers/tty/n_tty.c:2154
2 locks held by getty/7582:
#0: 00000000b517ef68 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:362
#1: 00000000cf5020f4 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1b30 drivers/tty/n_tty.c:2154
2 locks held by getty/7583:
#0: 000000006a6121c3 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 drivers/tty/tty_ldsem.c:362
#1: 00000000d34b7702 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1b30 drivers/tty/n_tty.c:2154
2 locks held by syz-executor.0/28461:
#0: 0000000033b10476 (sb_writers#16){.+.+}, at: sb_start_write include/linux/fs.h:1578 [inline]
#0: 0000000033b10476 (sb_writers#16){.+.+}, at: mnt_want_write+0x3f/0xc0 fs/namespace.c:360
#1: 00000000f77626d3 (&sb->s_type->i_mutex_key#21/1){+.+.}, at: inode_lock_nested include/linux/fs.h:782 [inline]
#1: 00000000f77626d3 (&sb->s_type->i_mutex_key#21/1){+.+.}, at: filename_create+0x17c/0x4f0 fs/namei.c:3635
2 locks held by syz-executor.0/28509:
#0: 0000000033b10476 (sb_writers#16){.+.+}, at: sb_start_write include/linux/fs.h:1578 [inline]
#0: 0000000033b10476 (sb_writers#16){.+.+}, at: mnt_want_write+0x3f/0xc0 fs/namespace.c:360
#1: 00000000f77626d3 (&sb->s_type->i_mutex_key#21/1){+.+.}, at: inode_lock_nested include/linux/fs.h:782 [inline]
#1: 00000000f77626d3 (&sb->s_type->i_mutex_key#21/1){+.+.}, at: filename_create+0x17c/0x4f0 fs/namei.c:3635
1 lock held by syz-executor.0/28510:
#0: 00000000f77626d3 (&sb->s_type->i_mutex_key#22){++++}, at: inode_lock_shared include/linux/fs.h:757 [inline]
#0: 00000000f77626d3 (&sb->s_type->i_mutex_key#22){++++}, at: lookup_slow+0x4a/0x80 fs/namei.c:1687
1 lock held by syz-executor.0/28511:
#0: 00000000f77626d3 (&sb->s_type->i_mutex_key#22){++++}, at: inode_lock_shared include/linux/fs.h:757 [inline]
#0: 00000000f77626d3 (&sb->s_type->i_mutex_key#22){++++}, at: lookup_slow+0x4a/0x80 fs/namei.c:1687
2 locks held by syz-executor.0/28514:
#0: 0000000033b10476 (sb_writers#16){.+.+}, at: sb_start_write include/linux/fs.h:1578 [inline]
#0: 0000000033b10476 (sb_writers#16){.+.+}, at: mnt_want_write+0x3f/0xc0 fs/namespace.c:360
#1: 00000000f77626d3 (&sb->s_type->i_mutex_key#21/1){+.+.}, at: inode_lock_nested include/linux/fs.h:782 [inline]
#1: 00000000f77626d3 (&sb->s_type->i_mutex_key#21/1){+.+.}, at: filename_create+0x17c/0x4f0 fs/namei.c:3635
=============================================
NMI backtrace for cpu 0
CPU: 0 PID: 1039 Comm: khungtaskd Not tainted 4.19.74 #0
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+0x172/0x1f0 lib/dump_stack.c:113
nmi_cpu_backtrace.cold+0x63/0xa4 lib/nmi_backtrace.c:101
nmi_trigger_cpumask_backtrace+0x1b0/0x1f8 lib/nmi_backtrace.c:62
arch_trigger_cpumask_backtrace+0x14/0x20 arch/x86/kernel/apic/hw_nmi.c:38
trigger_all_cpu_backtrace include/linux/nmi.h:146 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:203 [inline]
watchdog+0x9df/0xee0 kernel/hung_task.c:287
kthread+0x354/0x420 kernel/kthread.c:246
ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:415
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 0 Comm: swapper/1 Not tainted 4.19.74 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:check_preempt_curr+0xd5/0x390 kernel/sched/core.c:844
Code: 00 49 be 00 00 00 00 00 fc ff df 48 89 c3 eb 0e 49 39 dc 74 23 49 39 dd 0f 84 47 01 00 00 48 89 d8 48 c1 e8 03 42 80 3c 30 00 <0f> 85 a7 01 00 00 48 8b 1b 48 85 db 75 d8 49 8d 7f 60 48 b8 00 00
RSP: 0018:ffff8880ae907a68 EFLAGS: 00000046
RAX: 1ffffffff0e96978 RBX: ffffffff874b4bc0 RCX: ffff8880ae92d240
RDX: 0000000000000000 RSI: ffff8880a8e162c0 RDI: ffff8880aa270438
RBP: ffff8880ae907ab0 R08: ffff8880ae92dc60 R09: 1ffff1101544e087
R10: ffffed1015d24732 R11: ffff8880ae923993 R12: ffffffff874b37e0
R13: ffffffff874b40a0 R14: dffffc0000000000 R15: ffff8880aa2703c0
FS: 0000000000000000(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffffffffff600400 CR3: 00000000955c1000 CR4: 00000000001406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
ttwu_do_wakeup+0x1f/0x560 kernel/sched/core.c:1653
ttwu_do_activate+0x14b/0x1f0 kernel/sched/core.c:1699
ttwu_queue kernel/sched/core.c:1843 [inline]
try_to_wake_up+0x825/0xf50 kernel/sched/core.c:2052
wake_up_process+0x10/0x20 kernel/sched/core.c:2124
wake_up_worker kernel/workqueue.c:838 [inline]
insert_work+0x2ab/0x3a0 kernel/workqueue.c:1311
__queue_work+0x4c6/0x10a0 kernel/workqueue.c:1461
delayed_work_timer_fn+0x5d/0x90 kernel/workqueue.c:1500
call_timer_fn+0x18d/0x720 kernel/time/timer.c:1326
expire_timers kernel/time/timer.c:1359 [inline]
__run_timers kernel/time/timer.c:1682 [inline]
__run_timers kernel/time/timer.c:1650 [inline]
run_timer_softirq+0x44c/0x1700 kernel/time/timer.c:1695
__do_softirq+0x25c/0x921 kernel/softirq.c:292
invoke_softirq kernel/softirq.c:372 [inline]
irq_exit+0x180/0x1d0 kernel/softirq.c:412
exiting_irq arch/x86/include/asm/apic.h:536 [inline]
smp_apic_timer_interrupt+0x13b/0x550 arch/x86/kernel/apic/apic.c:1094
apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:893
RIP: 0010:native_safe_halt+0xe/0x10 arch/x86/include/asm/irqflags.h:61
Code: ff ff 48 89 df e8 72 db ad fa eb 82 e9 07 00 00 00 0f 00 2d 94 c0 53 00 f4 c3 66 90 e9 07 00 00 00 0f 00 2d 84 c0 53 00 fb f4 90 55 48 89 e5 41 57 41 56 41 55 41 54 53 e8 7e be 65 fa e8 89
RSP: 0018:ffff8880aa27fd00 EFLAGS: 00000282 ORIG_RAX: ffffffffffffff13
RAX: 1ffffffff10e48c4 RBX: ffff8880aa2703c0 RCX: 0000000000000000
RDX: dffffc0000000000 RSI: 0000000000000001 RDI: ffff8880aa270c3c
RBP: ffff8880aa27fd30 R08: ffff8880aa2703c0 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000001
R13: ffffffff88724610 R14: 0000000000000001 R15: 0000000000000000
arch_cpu_idle+0xa/0x10 arch/x86/kernel/process.c:556
default_idle_call+0x36/0x90 kernel/sched/idle.c:93
cpuidle_idle_call kernel/sched/idle.c:153 [inline]
do_idle+0x377/0x560 kernel/sched/idle.c:262
cpu_startup_entry+0xc8/0xe0 kernel/sched/idle.c:368
start_secondary+0x3e8/0x5b0 arch/x86/kernel/smpboot.c:271
secondary_startup_64+0xa4/0xb0 arch/x86/kernel/head_64.S:243