[26338] 0 26338 18145 8714 25 3 0 0 syz-executor.3
[26345] 0 26345 18178 8716 25 3 0 0 syz-executor.3
[26458] 0 26458 18145 8714 25 3 0 0 syz-executor.3
INFO: task udevd:31180 blocked for more than 140 seconds.
Not tainted 4.14.138+ #32
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
udevd D27968 31180 190 0x00000000
[26466] 0 26466 18178 8716 25 3 0 0 syz-executor.3
Call Trace:
[27809] 0 27809 18178 8747 26 4 0 0 syz-executor.3
[28001] 0 28001 18145 8745 26 4 0 0 syz-executor.3
[28991] 0 28991 18145 8745 26 4 0 0 syz-executor.3
schedule+0x92/0x1c0 kernel/sched/core.c:3498
schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:3556
[29369] 0 29369 18178 8748 26 4 0 0 syz-executor.3
[29936] 0 29936 18178 8748 26 4 0 0 syz-executor.3
__mutex_lock_common kernel/locking/mutex.c:833 [inline]
__mutex_lock+0x595/0x13e0 kernel/locking/mutex.c:893
[29938] 0 29938 18178 8748 26 4 0 0 syz-executor.3
[16912] 0 16912 18244 8751 26 4 0 0 syz-executor.3
[17096] 0 17096 18145 8715 25 3 0 0 syz-executor.3
kernfs_iop_permission+0x4e/0x90 fs/kernfs/inode.c:301
do_inode_permission fs/namei.c:386 [inline]
__inode_permission2+0x22c/0x2c0 fs/namei.c:428
inode_permission2+0x2d/0x100 fs/namei.c:485
[17104] 0 17104 18244 8723 25 3 0 0 syz-executor.3
[17295] 0 17295 18244 8755 26 4 0 0 syz-executor.3
may_lookup fs/namei.c:1731 [inline]
link_path_walk+0x8a6/0x1110 fs/namei.c:2111
path_lookupat.isra.0+0xde/0x7e0 fs/namei.c:2356
[17299] 0 17299 18145 8717 25 3 0 0 syz-executor.3
[17304] 0 17304 18244 8755 26 4 0 0 syz-executor.3
[17590] 0 17590 18145 8745 26 4 0 0 syz-executor.3
filename_lookup+0x1a1/0x3b0 fs/namei.c:2391
[17731] 0 17731 18145 8712 24 3 0 0 syz-executor.3
[17768] 0 17768 18178 8716 25 3 0 0 syz-executor.3
SYSC_readlinkat fs/stat.c:394 [inline]
SyS_readlinkat+0xbe/0x2b0 fs/stat.c:382
[17788] 0 17788 18145 8712 24 3 0 0 syz-executor.3
[18534] 0 18534 18211 8749 33 4 0 0 syz-executor.3
do_syscall_64+0x19b/0x520 arch/x86/entry/common.c:292
entry_SYSCALL_64_after_hwframe+0x42/0xb7
[18633] 0 18633 18211 8749 26 4 0 0 syz-executor.3
[20190] 0 20190 18145 8713 25 3 0 0 syz-executor.3
RIP: 0033:0x7efc94f76577
RSP: 002b:00007ffd1b58cd68 EFLAGS: 00000246 ORIG_RAX: 0000000000000059
RAX: ffffffffffffffda RBX: 000000000221f030 RCX: 00007efc94f76577
RDX: 0000000000000400 RSI: 00007ffd1b58cd70 RDI: 00007ffd1b58d250
[20234] 0 20234 18211 8719 26 3 0 0 syz-executor.3
RBP: 0000000002237af0 R08: 0000000002237af0 R09: 7665642f7379732f
[20995] 0 20995 18178 8719 25 3 0 0 syz-executor.3
R10: 7269762f73656369 R11: 0000000000000246 R12: 00007ffd1b58d250
[21030] 0 21030 18145 8714 25 3 0 0 syz-executor.3
R13: 0000000000000400 R14: 000000000221f030 R15: 000000000000000b
INFO: task udevd:19146 blocked for more than 140 seconds.
[21116] 0 21116 18211 8719 26 3 0 0 syz-executor.3
Not tainted 4.14.138+ #32
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[21405] 0 21405 18244 8754 26 4 0 0 syz-executor.3
udevd D26128 19146 190 0x00000000
Call Trace:
[21452] 0 21452 18277 8756 26 4 0 0 syz-executor.3
[22361] 0 22361 18145 8714 25 3 0 0 syz-executor.3
[22371] 0 22371 18211 8718 25 3 0 0 syz-executor.3
[23561] 0 23561 18145 8746 26 4 0 0 syz-executor.3
schedule+0x92/0x1c0 kernel/sched/core.c:3498
schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:3556
[23755] 0 23755 18145 8714 25 3 0 0 syz-executor.3
__mutex_lock_common kernel/locking/mutex.c:833 [inline]
__mutex_lock+0x595/0x13e0 kernel/locking/mutex.c:893
[23761] 0 23761 18178 8716 25 3 0 0 syz-executor.3
[23827] 0 23827 18691 8749 26 4 0 0 syz-executor.3
[24501] 0 24501 18244 8752 26 4 0 0 syz-executor.3
kernfs_iop_permission+0x4e/0x90 fs/kernfs/inode.c:301
[30590] 0 30590 18178 13261 32 3 0 0 syz-executor.3
do_inode_permission fs/namei.c:386 [inline]
__inode_permission2+0x22c/0x2c0 fs/namei.c:428
inode_permission2+0x2d/0x100 fs/namei.c:485
may_lookup fs/namei.c:1731 [inline]
link_path_walk+0x8a6/0x1110 fs/namei.c:2111
[30595] 0 30595 18209 13292 32 3 0 0 syz-executor.3
path_lookupat.isra.0+0xde/0x7e0 fs/namei.c:2356
[31180] 0 31180 5417 218 14 3 0 -1000 udevd
[31221] 0 31221 5417 217 14 3 0 -1000 udevd
[ 1601] 0 1601 18113 15 23 3 0 0 syz-executor.0
filename_lookup+0x1a1/0x3b0 fs/namei.c:2391
[ 1602] 0 1602 18112 8732 24 4 0 0 syz-executor.0
[ 5615] 0 5615 18145 8715 26 3 0 0 syz-executor.3
[ 5627] 0 5627 18178 8718 26 3 0 0 syz-executor.3
user_path_at include/linux/namei.h:57 [inline]
vfs_statx+0xe1/0x180 fs/stat.c:185
vfs_stat include/linux/fs.h:3085 [inline]
SYSC_newstat fs/stat.c:337 [inline]
SyS_newstat+0x96/0x110 fs/stat.c:333
[ 5763] 0 5763 18145 8714 25 3 0 0 syz-executor.3
[ 5764] 0 5764 18211 8752 26 4 0 0 syz-executor.3
[ 5771] 0 5771 18178 8718 25 3 0 0 syz-executor.3
[ 5947] 0 5947 18211 8750 26 4 0 0 syz-executor.3
[ 6185] 0 6185 18402 8746 26 4 0 0 syz-executor.3
do_syscall_64+0x19b/0x520 arch/x86/entry/common.c:292
entry_SYSCALL_64_after_hwframe+0x42/0xb7
[ 7178] 0 7178 18178 8749 26 4 0 0 syz-executor.3
RIP: 0033:0x7efc94f74c65
[ 7353] 0 7353 18178 8748 33 4 0 0 syz-executor.3
RSP: 002b:00007ffd1b589138 EFLAGS: 00000246 ORIG_RAX: 0000000000000004
RAX: ffffffffffffffda RBX: 000000000226a7d8 RCX: 00007efc94f74c65
RDX: 00007ffd1b5891b0 RSI: 00007ffd1b5891b0 RDI: 00007ffd1b589640
RBP: 0000000002254980 R08: 00007ffd1b589a40 R09: 00007ffd1b589670
R10: 6f6c622f6c617574 R11: 0000000000000246 R12: 0000000002257a00
R13: 0000000000625500 R14: 000000000221f030 R15: 0000000002257a00
[ 8535] 0 8535 18211 8752 27 4 0 0 syz-executor.3
[ 8606] 0 8606 18211 8752 27 4 0 0 syz-executor.3
INFO: task blkid:19157 blocked for more than 140 seconds.
Not tainted 4.14.138+ #32
[ 8684] 0 8684 18145 8749 26 4 0 0 syz-executor.3
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
blkid D27888 19157 19142 0x00000000
[ 9986] 0 9986 18145 8712 25 3 0 0 syz-executor.0
Call Trace:
[ 9992] 0 9992 18178 8714 25 3 0 0 syz-executor.0
[10021] 0 10021 18211 8750 26 4 0 0 syz-executor.0
[10114] 0 10114 18113 15 23 3 0 0 syz-executor.2
[10122] 0 10122 18112 8732 24 4 0 0 syz-executor.2
schedule+0x92/0x1c0 kernel/sched/core.c:3498
[10629] 0 10629 18145 8712 25 3 0 0 syz-executor.0
schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:3556
[11579] 0 11579 18211 8749 26 4 0 0 syz-executor.0
[11703] 0 11703 18145 8716 26 3 0 0 syz-executor.3
__mutex_lock_common kernel/locking/mutex.c:833 [inline]
__mutex_lock+0x595/0x13e0 kernel/locking/mutex.c:893
[11709] 0 11709 18211 8720 26 3 0 0 syz-executor.3
kernfs_iop_permission+0x4e/0x90 fs/kernfs/inode.c:301
[11968] 0 11968 18145 8714 25 3 0 0 syz-executor.3
do_inode_permission fs/namei.c:386 [inline]
__inode_permission2+0x22c/0x2c0 fs/namei.c:428
[11972] 0 11972 18211 8719 25 3 0 0 syz-executor.3
inode_permission2+0x2d/0x100 fs/namei.c:485
may_lookup fs/namei.c:1731 [inline]
link_path_walk+0x8a6/0x1110 fs/namei.c:2111
path_openat+0x178/0x2be0 fs/namei.c:3596
[12215] 0 12215 18178 8710 25 3 0 1000 syz-executor.2
[12235] 0 12235 18211 8718 30 3 0 1000 syz-executor.2
do_filp_open+0x1a1/0x280 fs/namei.c:3631
[12698] 0 12698 18113 16 23 3 0 0 syz-executor.5
[12699] 0 12699 18112 8714 24 4 0 0 syz-executor.5
[13776] 0 13776 18145 8715 25 3 0 0 syz-executor.3
[13827] 0 13827 34629 8729 27 3 0 0 syz-executor.3
do_sys_open+0x2ca/0x590 fs/open.c:1096
[13839] 0 13839 18145 8714 25 3 0 0 syz-executor.3
[13841] 0 13841 18178 8716 25 3 0 0 syz-executor.3
do_syscall_64+0x19b/0x520 arch/x86/entry/common.c:292
[13879] 0 13879 18145 8703 24 3 0 0 syz-executor.0
entry_SYSCALL_64_after_hwframe+0x42/0xb7
RIP: 0033:0x7f4be1490120
RSP: 002b:00007fffa8268b18 EFLAGS: 00000246 ORIG_RAX: 0000000000000002
[13880] 0 13880 18145 8712 25 3 0 0 syz-executor.0
RAX: ffffffffffffffda RBX: 00007fffa8269b60 RCX: 00007f4be1490120
RDX: 00007fffa8268b36 RSI: 0000000000000000 RDI: 00007fffa8268b20
[14169] 0 14169 18145 8743 26 4 0 1000 syz-executor.5
[14614] 0 14614 18178 8742 26 4 0 1000 syz-executor.2
[14785] 0 14785 18211 8749 25 4 0 0 syz-executor.3
RBP: 0000000000110300 R08: 0000000000000000 R09: 0000000000000001
R10: 0000000000000000 R11: 0000000000000246 R12: 00007fffa826abd8
[14839] 0 14839 18211 8749 25 4 0 0 syz-executor.3
[15219] 0 15219 18244 8752 26 4 0 0 syz-executor.3
R13: 0000000000000000 R14: 00007f4be1971820 R15: 00007f4be17672a2
Showing all locks held in the system:
1 lock held by init/1:
#0: (&ei->i_mmap_sem){++++}, at: [<00000000f246da5b>] ext4_filemap_fault+0x7c/0xb0 fs/ext4/inode.c:6196
1 lock held by khungtaskd/23:
#0: (tasklist_lock){.+.+}, at: [<00000000662ab4c2>] debug_show_all_locks+0x7c/0x21a kernel/locking/lockdep.c:4541
1 lock held by udevd/190:
#0: (&mm->mmap_sem){++++}, at: [<000000004cc8fc77>] __do_page_fault+0x282/0xbb0 arch/x86/mm/fault.c:1352
1 lock held by rsyslogd/1629:
#0: (&ei->i_mmap_sem){++++}, at: [<00000000f246da5b>] ext4_filemap_fault+0x7c/0xb0 fs/ext4/inode.c:6196
2 locks held by getty/1756:
#0: (&tty->ldisc_sem){++++}, at: [<000000004f045571>] tty_ldisc_ref_wait+0x22/0x80 drivers/tty/tty_ldisc.c:284
#1: (&ldata->atomic_read_lock){+.+.}, at: [<000000002a3ad898>] n_tty_read+0x1f7/0x1700 drivers/tty/n_tty.c:2156
1 lock held by syz-fuzzer/1776:
#0: (&ei->i_mmap_sem){++++}, at: [<00000000f246da5b>] ext4_filemap_fault+0x7c/0xb0 fs/ext4/inode.c:6196
1 lock held by syz-fuzzer/1779:
#0: (&ei->i_mmap_sem){++++}, at: [<00000000f246da5b>] ext4_filemap_fault+0x7c/0xb0 fs/ext4/inode.c:6196
1 lock held by syz-fuzzer/1782:
#0: (&ei->i_mmap_sem){++++}, at: [<00000000f246da5b>] ext4_filemap_fault+0x7c/0xb0 fs/ext4/inode.c:6196
1 lock held by syz-executor.3/16737:
#0: (&ei->i_mmap_sem){++++}, at: [<00000000f246da5b>] ext4_filemap_fault+0x7c/0xb0 fs/ext4/inode.c:6196
1 lock held by udevd/31180:
#0: (kernfs_mutex){+.+.}, at: [<00000000f0a901be>] kernfs_iop_permission+0x4e/0x90 fs/kernfs/inode.c:301
1 lock held by syz-executor.5/12699:
#0: (&ei->i_mmap_sem){++++}, at: [<00000000f246da5b>] ext4_filemap_fault+0x7c/0xb0 fs/ext4/inode.c:6196
1 lock held by udevd/18767:
#0: (&ei->i_mmap_sem){++++}, at: [<00000000f246da5b>] ext4_filemap_fault+0x7c/0xb0 fs/ext4/inode.c:6196
1 lock held by udevd/18783:
#0: (&ei->i_mmap_sem){++++}, at: [<00000000f246da5b>] ext4_filemap_fault+0x7c/0xb0 fs/ext4/inode.c:6196
1 lock held by udevd/18784:
#0: (&mm->mmap_sem){++++}, at: [<000000004cc8fc77>] __do_page_fault+0x282/0xbb0 arch/x86/mm/fault.c:1352
1 lock held by udevd/18790:
#0: (&ei->i_mmap_sem){++++}, at: [<00000000f246da5b>] ext4_filemap_fault+0x7c/0xb0 fs/ext4/inode.c:6196
1 lock held by udevd/18794:
#0: (&ei->i_mmap_sem){++++}, at: [<00000000f246da5b>] ext4_filemap_fault+0x7c/0xb0 fs/ext4/inode.c:6196
1 lock held by udevd/18795:
#0: (&ei->i_mmap_sem){++++}, at: [<00000000f246da5b>] ext4_filemap_fault+0x7c/0xb0 fs/ext4/inode.c:6196
1 lock held by blkid/18796:
#0: (&mm->mmap_sem){++++}, at: [<000000004cc8fc77>] __do_page_fault+0x282/0xbb0 arch/x86/mm/fault.c:1352
1 lock held by udevd/18798:
#0: (&ei->i_mmap_sem){++++}, at: [<00000000f246da5b>] ext4_filemap_fault+0x7c/0xb0 fs/ext4/inode.c:6196
1 lock held by udevd/18800:
#0: (&ei->i_mmap_sem){++++}, at: [<00000000f246da5b>] ext4_filemap_fault+0x7c/0xb0 fs/ext4/inode.c:6196
1 lock held by udevd/18802:
#0: (&ei->i_mmap_sem){++++}, at: [<00000000f246da5b>] ext4_filemap_fault+0x7c/0xb0 fs/ext4/inode.c:6196
1 lock held by udevd/18803:
#0: (&ei->i_mmap_sem){++++}, at: [<00000000f246da5b>] ext4_filemap_fault+0x7c/0xb0 fs/ext4/inode.c:6196
1 lock held by blkid/18804:
#0: (&mm->mmap_sem){++++}, at: [<000000004cc8fc77>] __do_page_fault+0x282/0xbb0 arch/x86/mm/fault.c:1352
1 lock held by blkid/18806:
#0: (&mm->mmap_sem){++++}, at: [<000000004cc8fc77>] __do_page_fault+0x282/0xbb0 arch/x86/mm/fault.c:1352
1 lock held by udevd/18807:
#0: (&ei->i_mmap_sem){++++}, at: [<00000000f246da5b>] ext4_filemap_fault+0x7c/0xb0 fs/ext4/inode.c:6196
1 lock held by udevd/18810:
#0: (&ei->i_mmap_sem){++++}, at: [<00000000f246da5b>] ext4_filemap_fault+0x7c/0xb0 fs/ext4/inode.c:6196
1 lock held by blkid/18812:
#0: (&mm->mmap_sem){++++}, at: [<000000004cc8fc77>] __do_page_fault+0x282/0xbb0 arch/x86/mm/fault.c:1352
1 lock held by udevd/18815:
#0: (&mm->mmap_sem){++++}, at: [<000000004cc8fc77>] __do_page_fault+0x282/0xbb0 arch/x86/mm/fault.c:1352
1 lock held by blkid/18816:
#0: (&mm->mmap_sem){++++}, at: [<000000004cc8fc77>] __do_page_fault+0x282/0xbb0 arch/x86/mm/fault.c:1352
1 lock held by blkid/18819:
#0: (&mm->mmap_sem){++++}, at: [<000000004cc8fc77>] __do_page_fault+0x282/0xbb0 arch/x86/mm/fault.c:1352
1 lock held by udevd/18821:
#0: (&ei->i_mmap_sem){++++}, at: [<00000000f246da5b>] ext4_filemap_fault+0x7c/0xb0 fs/ext4/inode.c:6196
1 lock held by udevd/18822:
#0: (&ei->i_mmap_sem){++++}, at: [<00000000f246da5b>] ext4_filemap_fault+0x7c/0xb0 fs/ext4/inode.c:6196
1 lock held by blkid/18823:
#0: (&mm->mmap_sem){++++}, at: [<000000004cc8fc77>] __do_page_fault+0x282/0xbb0 arch/x86/mm/fault.c:1352
1 lock held by udevd/18824:
#0: (&ei->i_mmap_sem){++++}, at: [<00000000f246da5b>] ext4_filemap_fault+0x7c/0xb0 fs/ext4/inode.c:6196
1 lock held by blkid/18826:
#0: (&mm->mmap_sem){++++}, at: [<000000004cc8fc77>] __do_page_fault+0x282/0xbb0 arch/x86/mm/fault.c:1352
1 lock held by blkid/18827:
#0: (&mm->mmap_sem){++++}, at: [<000000004cc8fc77>] __do_page_fault+0x282/0xbb0 arch/x86/mm/fault.c:1352
1 lock held by udevd/18828:
#0: (&ei->i_mmap_sem){++++}, at: [<00000000f246da5b>] ext4_filemap_fault+0x7c/0xb0 fs/ext4/inode.c:6196
1 lock held by udevd/18829:
#0: (&ei->i_mmap_sem){++++}, at: [<00000000f246da5b>] ext4_filemap_fault+0x7c/0xb0 fs/ext4/inode.c:6196
1 lock held by blkid/18830:
#0: (&mm->mmap_sem){++++}, at: [<000000004cc8fc77>] __do_page_fault+0x282/0xbb0 arch/x86/mm/fault.c:1352
1 lock held by blkid/18835:
#0: (&mm->mmap_sem){++++}, at: [<000000004cc8fc77>] __do_page_fault+0x282/0xbb0 arch/x86/mm/fault.c:1352
1 lock held by udevd/18837:
#0: (&ei->i_mmap_sem){++++}, at: [<00000000f246da5b>] ext4_filemap_fault+0x7c/0xb0 fs/ext4/inode.c:6196
1 lock held by udevd/18842:
#0: (&ei->i_mmap_sem){++++}, at: [<00000000f246da5b>] ext4_filemap_fault+0x7c/0xb0 fs/ext4/inode.c:6196
1 lock held by blkid/18845:
#0: (&mm->mmap_sem){++++}, at: [<000000004cc8fc77>] __do_page_fault+0x282/0xbb0 arch/x86/mm/fault.c:1352
1 lock held by blkid/18846:
#0: (&mm->mmap_sem){++++}, at: [<000000004cc8fc77>] __do_page_fault+0x282/0xbb0 arch/x86/mm/fault.c:1352
1 lock held by udevd/18847:
#0: (&ei->i_mmap_sem){++++}, at: [<00000000f246da5b>] ext4_filemap_fault+0x7c/0xb0 fs/ext4/inode.c:6196
1 lock held by udevd/18848:
#0: (&ei->i_mmap_sem){++++}, at: [<00000000f246da5b>] ext4_filemap_fault+0x7c/0xb0 fs/ext4/inode.c:6196
1 lock held by udevd/18852:
#0: (&ei->i_mmap_sem){++++}, at: [<00000000f246da5b>] ext4_filemap_fault+0x7c/0xb0 fs/ext4/inode.c:6196
1 lock held by udevd/18853:
#0: (&ei->i_mmap_sem){++++}, at: [<00000000f246da5b>] ext4_filemap_fault+0x7c/0xb0 fs/ext4/inode.c:6196
1 lock held by blkid/18854:
#0: (&mm->mmap_sem){++++}, at: [<000000004cc8fc77>] __do_page_fault+0x282/0xbb0 arch/x86/mm/fault.c:1352
1 lock held by udevd/18855:
#0: (&ei->i_mmap_sem){++++}, at: [<00000000f246da5b>] ext4_filemap_fault+0x7c/0xb0 fs/ext4/inode.c:6196
1 lock held by blkid/18856:
#0: (&mm->mmap_sem){++++}, at: [<000000004cc8fc77>] __do_page_fault+0x282/0xbb0 arch/x86/mm/fault.c:1352
1 lock held by blkid/18857:
#0: (&mm->mmap_sem){++++}, at: [<000000004cc8fc77>] __do_page_fault+0x282/0xbb0 arch/x86/mm/fault.c:1352
1 lock held by blkid/18858:
#0: (&mm->mmap_sem){++++}, at: [<000000004cc8fc77>] __do_page_fault+0x282/0xbb0 arch/x86/mm/fault.c:1352
1 lock held by udevd/18861:
#0: (&ei->i_mmap_sem){++++}, at: [<00000000f246da5b>] ext4_filemap_fault+0x7c/0xb0 fs/ext4/inode.c:6196
1 lock held by blkid/18875:
#0: (&mm->mmap_sem){++++}, at: [<000000004cc8fc77>] __do_page_fault+0x282/0xbb0 arch/x86/mm/fault.c:1352
1 lock held by blkid/18881:
#0: (&mm->mmap_sem){++++}, at: [<000000004cc8fc77>] __do_page_fault+0x282/0xbb0 arch/x86/mm/fault.c:1352
1 lock held by blkid/18882:
#0: (&mm->mmap_sem){++++}, at: [<000000004cc8fc77>] __do_page_fault+0x282/0xbb0 arch/x86/mm/fault.c:1352
1 lock held by udevd/18883:
#0: (&ei->i_mmap_sem){++++}, at: [<00000000f246da5b>] ext4_filemap_fault+0x7c/0xb0 fs/ext4/inode.c:6196
1 lock held by udevd/18884:
#0: (&ei->i_mmap_sem){++++}, at: [<00000000f246da5b>] ext4_filemap_fault+0x7c/0xb0 fs/ext4/inode.c:6196
1 lock held by udevd/18885:
#0: (&ei->i_mmap_sem){++++}, at: [<00000000f246da5b>] ext4_filemap_fault+0x7c/0xb0 fs/ext4/inode.c:6196
1 lock held by blkid/18886:
#0: (&mm->mmap_sem){++++}, at: [<000000004cc8fc77>] __do_page_fault+0x282/0xbb0 arch/x86/mm/fault.c:1352
1 lock held by udevd/18887:
#0: (&ei->i_mmap_sem){++++}, at: [<00000000f246da5b>] ext4_filemap_fault+0x7c/0xb0 fs/ext4/inode.c:6196
1 lock held by udevd/18888:
#0: (&ei->i_mmap_sem){++++}, at: [<00000000f246da5b>] ext4_filemap_fault+0x7c/0xb0 fs/ext4/inode.c:6196
1 lock held by udevd/18889:
#0: (&ei->i_mmap_sem){++++}, at: [<00000000f246da5b>] ext4_filemap_fault+0x7c/0xb0 fs/ext4/inode.c:6196
1 lock held by blkid/18891:
#0: (&mm->mmap_sem){++++}, at: [<000000004cc8fc77>] __do_page_fault+0x282/0xbb0 arch/x86/mm/fault.c:1352
1 lock held by udevd/18892:
#0: (&ei->i_mmap_sem){++++}, at: [<00000000f246da5b>] ext4_filemap_fault+0x7c/0xb0 fs/ext4/inode.c:6196
1 lock held by udevd/18895:
#0: (&ei->i_mmap_sem){++++}, at: [<00000000f246da5b>] ext4_filemap_fault+0x7c/0xb0 fs/ext4/inode.c:6196
1 lock held by udevd/18896:
#0: (&ei->i_mmap_sem){++++}, at: [<00000000f246da5b>] ext4_filemap_fault+0x7c/0xb0 fs/ext4/inode.c:6196
1 lock held by blkid/18901:
#0: (&mm->mmap_sem){++++}, at: [<000000004cc8fc77>] __do_page_fault+0x282/0xbb0 arch/x86/mm/fault.c:1352
1 lock held by udevd/18902:
#0: (&ei->i_mmap_sem){++++}, at: [<00000000f246da5b>] ext4_filemap_fault+0x7c/0xb0 fs/ext4/inode.c:6196
1 lock held by blkid/18903:
#0: (&mm->mmap_sem){++++}, at: [<000000004cc8fc77>] __do_page_fault+0x282/0xbb0 arch/x86/mm/fault.c:1352
1 lock held by udevd/18904:
#0: (&ei->i_mmap_sem){++++}, at: [<00000000f246da5b>] ext4_filemap_fault+0x7c/0xb0 fs/ext4/inode.c:6196
1 lock held by udevd/18905:
[15270] 0 15270 18244 8752 26 4 0 0 syz-executor.3
#0: (&ei->i_mmap_sem){++++}, at: [<00000000f246da5b>] ext4_filemap_fault+0x7c/0xb0 fs/ext4/inode.c:6196
1 lock held by blkid/18906:
#0: (&mm->mmap_sem){++++}, at: [<000000004cc8fc77>] __do_page_fault+0x282/0xbb0 arch/x86/mm/fault.c:1352
1 lock held by blkid/18907:
#0: (&mm->mmap_sem){++++}, at: [<000000004cc8fc77>] __do_page_fault+0x282/0xbb0 arch/x86/mm/fault.c:1352
1 lock held by blkid/18908:
#0: (&mm->mmap_sem){++++}, at: [<000000004cc8fc77>] __do_page_fault+0x282/0xbb0 arch/x86/mm/fault.c:1352
1 lock held by blkid/18909:
#0: (&mm->mmap_sem){++++}, at: [<000000004cc8fc77>] __do_page_fault+0x282/0xbb0 arch/x86/mm/fault.c:1352
1 lock held by blkid/18910:
#0: (&mm->mmap_sem){++++}, at: [<000000004cc8fc77>] __do_page_fault+0x282/0xbb0 arch/x86/mm/fault.c:1352
1 lock held by blkid/18911:
#0: (&mm->mmap_sem){++++}, at: [<000000004cc8fc77>] __do_page_fault+0x282/0xbb0 arch/x86/mm/fault.c:1352
1 lock held by udevd/18912:
#0: (&ei->i_mmap_sem){++++}, at: [<00000000f246da5b>] ext4_filemap_fault+0x7c/0xb0 fs/ext4/inode.c:6196
1 lock held by blkid/18913:
[15997] 0 15997 18178 8745 33 4 0 0 syz-executor.5
#0: (&mm->mmap_sem){++++}, at: [<000000004cc8fc77>] __do_page_fault+0x282/0xbb0 arch/x86/mm/fault.c:1352
1 lock held by udevd/18914:
#0: (&ei->i_mmap_sem){++++}, at: [<00000000f246da5b>] ext4_filemap_fault+0x7c/0xb0 fs/ext4/inode.c:6196
1 lock held by udevd/18915:
#0: (&ei->i_mmap_sem){++++}, at: [<00000000f246da5b>] ext4_filemap_fault+0x7c/0xb0 fs/ext4/inode.c:6196
1 lock held by blkid/18916:
#0: (&mm->mmap_sem){++++}, at: [<000000004cc8fc77>] __do_page_fault+0x282/0xbb0 arch/x86/mm/fault.c:1352
1 lock held by blkid/18917:
#0: (&mm->mmap_sem){++++}, at: [<000000004cc8fc77>] __do_page_fault+0x282/0xbb0 arch/x86/mm/fault.c:1352
[16280] 0 16280 18178 8749 26 4 0 0 syz-executor.3
1 lock held by blkid/18918:
#0: (&mm->mmap_sem){++++}, at: [<000000004cc8fc77>] __do_page_fault+0x282/0xbb0 arch/x86/mm/fault.c:1352
1 lock held by udevd/18919:
#0: (&ei->i_mmap_sem){++++}, at: [<00000000f246da5b>] ext4_filemap_fault+0x7c/0xb0 fs/ext4/inode.c:6196
1 lock held by blkid/18922:
#0: (&mm->mmap_sem){++++}, at: [<000000004cc8fc77>] __do_page_fault+0x282/0xbb0 arch/x86/mm/fault.c:1352
1 lock held by udevd/18923:
#0: (&ei->i_mmap_sem){++++}, at: [<00000000f246da5b>] ext4_filemap_fault+0x7c/0xb0 fs/ext4/inode.c:6196
1 lock held by udevd/18924:
#0: (&ei->i_mmap_sem){++++}, at: [<00000000f246da5b>] ext4_filemap_fault+0x7c/0xb0 fs/ext4/inode.c:6196
1 lock held by blkid/18925:
#0: (&mm->mmap_sem){++++}, at: [<000000004cc8fc77>] __do_page_fault+0x282/0xbb0 arch/x86/mm/fault.c:1352
1 lock held by blkid/18926:
#0: (&mm->mmap_sem){++++}, at: [<000000004cc8fc77>] __do_page_fault+0x282/0xbb0 arch/x86/mm/fault.c:1352
1 lock held by udevd/18928:
#0: (&ei->i_mmap_sem){++++}, at: [<00000000f246da5b>] ext4_filemap_fault+0x7c/0xb0 fs/ext4/inode.c:6196
1 lock held by blkid/18929:
#0: (&mm->mmap_sem){++++}, at: [<000000004cc8fc77>] __do_page_fault+0x282/0xbb0 arch/x86/mm/fault.c:1352
1 lock held by udevd/18930:
#0: (&ei->i_mmap_sem){++++}, at: [<00000000f246da5b>] ext4_filemap_fault+0x7c/0xb0 fs/ext4/inode.c:6196
[16295] 0 16295 18113 15 23 3 0 0 syz-executor.1
1 lock held by udevd/18931:
#0: (&ei->i_mmap_sem){++++}, at: [<00000000f246da5b>] ext4_filemap_fault+0x7c/0xb0 fs/ext4/inode.c:6196
1 lock held by udevd/18932:
#0: (&mm->mmap_sem){++++}, at: [<000000004cc8fc77>] __do_page_fault+0x282/0xbb0 arch/x86/mm/fault.c:1352
1 lock held by udevd/18934:
#0: (&ei->i_mmap_sem){++++}, at: [<00000000f246da5b>] ext4_filemap_fault+0x7c/0xb0 fs/ext4/inode.c:6196
1 lock held by udevd/18937:
#0: (&ei->i_mmap_sem){++++}, at: [<00000000f246da5b>] ext4_filemap_fault+0x7c/0xb0 fs/ext4/inode.c:6196
1 lock held by blkid/18938:
#0: (&mm->mmap_sem){++++}, at: [<000000004cc8fc77>] __do_page_fault+0x282/0xbb0 arch/x86/mm/fault.c:1352
1 lock held by udevd/18939:
#0: (&ei->i_mmap_sem){++++}, at: [<00000000f246da5b>] ext4_filemap_fault+0x7c/0xb0 fs/ext4/inode.c:6196
1 lock held by blkid/18940:
#0: (&mm->mmap_sem){++++}, at: [<000000004cc8fc77>] __do_page_fault+0x282/0xbb0 arch/x86/mm/fault.c:1352
1 lock held by udevd/18941:
#0: (&ei->i_mmap_sem){++++}, at: [<00000000f246da5b>] ext4_filemap_fault+0x7c/0xb0 fs/ext4/inode.c:6196
1 lock held by blkid/18942:
#0: (&mm->mmap_sem){++++}, at: [<000000004cc8fc77>] __do_page_fault+0x282/0xbb0 arch/x86/mm/fault.c:1352
1 lock held by udevd/18946:
#0: (&ei->i_mmap_sem){++++}, at: [<00000000f246da5b>] ext4_filemap_fault+0x7c/0xb0 fs/ext4/inode.c:6196
1 lock held by udevd/18949:
#0: (&ei->i_mmap_sem){++++}, at: [<00000000f246da5b>] ext4_filemap_fault+0x7c/0xb0 fs/ext4/inode.c:6196
1 lock held by blkid/18950:
#0: (&mm->mmap_sem){++++}, at: [<000000004cc8fc77>] __do_page_fault+0x282/0xbb0 arch/x86/mm/fault.c:1352
[16296] 0 16296 18112 8731 24 4 0 0 syz-executor.1
1 lock held by udevd/18951:
#0: (&ei->i_mmap_sem){++++}, at: [<00000000f246da5b>] ext4_filemap_fault+0x7c/0xb0 fs/ext4/inode.c:6196
1 lock held by blkid/18952:
#0: (&mm->mmap_sem){++++}, at: [<000000004cc8fc77>] __do_page_fault+0x282/0xbb0 arch/x86/mm/fault.c:1352
1 lock held by blkid/18953:
#0: (&mm->mmap_sem){++++}, at: [<000000004cc8fc77>] __do_page_fault+0x282/0xbb0 arch/x86/mm/fault.c:1352
1 lock held by udevd/18954:
#0: (&ei->i_mmap_sem){++++}, at: [<00000000f246da5b>] ext4_filemap_fault+0x7c/0xb0 fs/ext4/inode.c:6196
1 lock held by udevd/18955:
#0: (&mm->mmap_sem){++++}, at: [<000000004cc8fc77>] __do_page_fault+0x282/0xbb0 arch/x86/mm/fault.c:1352
1 lock held by udevd/18956:
#0: (&ei->i_mmap_sem){++++}, at: [<00000000f246da5b>] ext4_filemap_fault+0x7c/0xb0 fs/ext4/inode.c:6196
1 lock held by blkid/18957:
#0: (&mm->mmap_sem){++++}, at: [<000000004cc8fc77>] __do_page_fault+0x282/0xbb0 arch/x86/mm/fault.c:1352
1 lock held by udevd/18958:
#0: (&ei->i_mmap_sem){++++}, at: [<00000000f246da5b>] ext4_filemap_fault+0x7c/0xb0 fs/ext4/inode.c:6196
1 lock held by blkid/18959:
#0: (&mm->mmap_sem){++++}, at: [<000000004cc8fc77>] __do_page_fault+0x282/0xbb0 arch/x86/mm/fault.c:1352
1 lock held by udevd/18960:
#0: (&ei->i_mmap_sem){++++}, at: [<00000000f246da5b>] ext4_filemap_fault+0x7c/0xb0 fs/ext4/inode.c:6196
1 lock held by blkid/18961:
#0: (&mm->mmap_sem){++++}, at: [<000000004cc8fc77>] __do_page_fault+0x282/0xbb0 arch/x86/mm/fault.c:1352
1 lock held by udevd/18962:
#0: (&ei->i_mmap_sem){++++}, at: [<00000000f246da5b>] ext4_filemap_fault+0x7c/0xb0 fs/ext4/inode.c:6196
1 lock held by udevd/18963:
#0: (&ei->i_mmap_sem){++++}, at: [<00000000f246da5b>] ext4_filemap_fault+0x7c/0xb0 fs/ext4/inode.c:6196
1 lock held by udevd/18965:
#0: (&ei->i_mmap_sem){++++}, at: [<00000000f246da5b>] ext4_filemap_fault+0x7c/0xb0 fs/ext4/inode.c:6196
1 lock held by blkid/18967:
#0: (&mm->mmap_sem){++++}, at: [<000000004cc8fc77>] __do_page_fault+0x282/0xbb0 arch/x86/mm/fault.c:1352
[16668] 0 16668 18310 8752 27 4 0 0 syz-executor.2
1 lock held by blkid/18968:
#0: (&mm->mmap_sem){++++}, at: [<000000004cc8fc77>] __do_page_fault+0x282/0xbb0 arch/x86/mm/fault.c:1352
1 lock held by blkid/18969:
#0: (&mm->mmap_sem){++++}, at: [<000000004cc8fc77>] __do_page_fault+0x282/0xbb0 arch/x86/mm/fault.c:1352
1 lock held by blkid/18970:
#0: (&mm->mmap_sem){++++}, at: [<000000004cc8fc77>] __do_page_fault+0x282/0xbb0 arch/x86/mm/fault.c:1352
1 lock held by blkid/18971:
#0: (&mm->mmap_sem){++++}, at: [<000000004cc8fc77>] __do_page_fault+0x282/0xbb0 arch/x86/mm/fault.c:1352
1 lock held by blkid/18972:
#0: (&mm->mmap_sem){++++}, at: [<000000004cc8fc77>] __do_page_fault+0x282/0xbb0 arch/x86/mm/fault.c:1352
1 lock held by udevd/18975:
#0: (&ei->i_mmap_sem){++++}, at: [<00000000f246da5b>] ext4_filemap_fault+0x7c/0xb0 fs/ext4/inode.c:6196
1 lock held by blkid/18978:
#0: (&mm->mmap_sem){++++}, at: [<000000004cc8fc77>] __do_page_fault+0x282/0xbb0 arch/x86/mm/fault.c:1352
1 lock held by blkid/18988:
#0: (&mm->mmap_sem){++++}, at: [<000000004cc8fc77>] __do_page_fault+0x282/0xbb0 arch/x86/mm/fault.c:1352
1 lock held by blkid/18989:
#0: (&mm->mmap_sem){++++}, at: [<000000004cc8fc77>] __do_page_fault+0x282/0xbb0 arch/x86/mm/fault.c:1352
1 lock held by blkid/18990:
[16921] 0 16921 18145 8716 25 3 0 0 syz-executor.0
#0: (&mm->mmap_sem){++++}, at: [<000000004cc8fc77>] __do_page_fault+0x282/0xbb0 arch/x86/mm/fault.c:1352
1 lock held by blkid/18991:
#0: (&mm->mmap_sem){++++}, at: [<000000004cc8fc77>] __do_page_fault+0x282/0xbb0 arch/x86/mm/fault.c:1352
1 lock held by udevd/18992:
#0: (&ei->i_mmap_sem){++++}, at: [<00000000f246da5b>] ext4_filemap_fault+0x7c/0xb0 fs/ext4/inode.c:6196
1 lock held by udevd/18993:
#0: (&ei->i_mmap_sem){++++}, at: [<00000000f246da5b>] ext4_filemap_fault+0x7c/0xb0 fs/ext4/inode.c:6196
1 lock held by udevd/18994:
#0: (&ei->i_mmap_sem){++++}, at: [<00000000f246da5b>] ext4_filemap_fault+0x7c/0xb0 fs/ext4/inode.c:6196
1 lock held by blkid/18996:
#0: (&mm->mmap_sem){++++}, at: [<000000004cc8fc77>] __do_page_fault+0x282/0xbb0 arch/x86/mm/fault.c:1352
[16928] 0 16928 18211 8720 25 3 0 0 syz-executor.0
1 lock held by blkid/18997:
#0: (&mm->mmap_sem){++++}, at: [<000000004cc8fc77>] __do_page_fault+0x282/0xbb0 arch/x86/mm/fault.c:1352
1 lock held by blkid/19009:
#0: (&mm->mmap_sem){++++}, at: [<000000004cc8fc77>] __do_page_fault+0x282/0xbb0 arch/x86/mm/fault.c:1352
1 lock held by udevd/19146:
#0: (kernfs_mutex){+.+.}, at: [<00000000f0a901be>] kernfs_iop_permission+0x4e/0x90 fs/kernfs/inode.c:301
1 lock held by blkid/19157:
#0: (kernfs_mutex){+.+.}, at: [<00000000f0a901be>] kernfs_iop_permission+0x4e/0x90 fs/kernfs/inode.c:301
=============================================
NMI backtrace for cpu 1
CPU: 1 PID: 23 Comm: khungtaskd Not tainted 4.14.138+ #32
Call Trace:
__dump_stack lib/dump_stack.c:17 [inline]
dump_stack+0xca/0x134 lib/dump_stack.c:53
nmi_cpu_backtrace.cold+0x47/0x86 lib/nmi_backtrace.c:101
nmi_trigger_cpumask_backtrace+0x119/0x147 lib/nmi_backtrace.c:62
trigger_all_cpu_backtrace include/linux/nmi.h:140 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:195 [inline]
watchdog+0x629/0xbe0 kernel/hung_task.c:274
kthread+0x31f/0x430 kernel/kthread.c:232
ret_from_fork+0x3a/0x50 arch/x86/entry/entry_64.S:404
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 18990 Comm: blkid Not tainted 4.14.138+ #32
task: 000000001cf0835b task.stack: 0000000038087cb1
RIP: 0010:trace_event_get_offsets_lock_acquire include/trace/events/lock.h:13 [inline]
RIP: 0010:perf_trace_lock_acquire+0xcb/0x4e0 include/trace/events/lock.h:13
RSP: 0000:ffff8881a8bd72a0 EFLAGS: 00000046
RAX: dffffc0000000000 RBX: 0000000000000001 RCX: 0000000000000000
RDX: 1ffffffff1e447d6 RSI: ffffffff8f223e98 RDI: ffffffff8eec0c60
RBP: ffff8881a8bd7380 R08: 0000000000000000 R09: 0000000000000001
R10: ffffffff8cbf5790 R11: ffffffff8f22ce8b R12: ffffffff8eec0be0
R13: ffffffff8f223e98 R14: ffff8881a8bd7358 R15: 0000000000000000
FS: 00007f827e759740(0000) GS:ffff8881dba00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007efc94ff2aa1 CR3: 0000000192bfc006 CR4: 00000000001606b0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000600
Call Trace:
trace_lock_acquire include/trace/events/lock.h:13 [inline]
lock_acquire+0x279/0x360 kernel/locking/lockdep.c:3990
__raw_spin_lock_irq include/linux/spinlock_api_smp.h:128 [inline]
_raw_spin_lock_irq+0x36/0x40 kernel/locking/spinlock.c:168
spin_lock_irq include/linux/spinlock.h:342 [inline]
shrink_inactive_list+0x417/0x1130 mm/vmscan.c:1829
shrink_list mm/vmscan.c:2179 [inline]
shrink_node_memcg+0x5ad/0x1470 mm/vmscan.c:2444
shrink_node+0x2f3/0xc30 mm/vmscan.c:2636
shrink_zones mm/vmscan.c:2818 [inline]
do_try_to_free_pages+0x350/0xd80 mm/vmscan.c:2876
try_to_free_pages+0x27c/0x710 mm/vmscan.c:3082
__perform_reclaim mm/page_alloc.c:3602 [inline]
__alloc_pages_direct_reclaim mm/page_alloc.c:3624 [inline]
__alloc_pages_slowpath mm/page_alloc.c:4011 [inline]
__alloc_pages_nodemask+0xaee/0x2370 mm/page_alloc.c:4220
__alloc_pages include/linux/gfp.h:461 [inline]
__alloc_pages_node include/linux/gfp.h:474 [inline]
alloc_pages_node include/linux/gfp.h:488 [inline]
alloc_zeroed_user_highpage_movable include/linux/highmem.h:184 [inline]
do_anonymous_page mm/memory.c:3133 [inline]
handle_pte_fault mm/memory.c:3987 [inline]
__handle_mm_fault+0x1116/0x2700 mm/memory.c:4113
handle_mm_fault+0x2f1/0x6da mm/memory.c:4150
__do_page_fault+0x477/0xbb0 arch/x86/mm/fault.c:1423
page_fault+0x42/0x50 arch/x86/entry/entry_64.S:1122
RIP: 07ff:0x1052320
RSP: 7bf95f10:0000000001051eb0 EFLAGS: 00000001
Code: 03 00 00 49 8d 45 18 4d 8b bc 24 80 00 00 00 48 89 c2 48 89 85 38 ff ff ff 48 b8 00 00 00 00 00 fc ff df 48 c1 ea 03 80 3c 02 00 <0f> 85 48 03 00 00 49 8b 7d 18 48 85 ff 0f 84 d6 02 00 00 e8 bd