EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue
audit: type=1800 audit(1621166539.571:2): pid=7974 uid=0 auid=4294967295 ses=4294967295 op="collect_data" cause="failed(directio)" comm="syz-executor397" name="file0" dev="loop0" ino=17 res=0
INFO: task syz-executor397:7974 blocked for more than 140 seconds.
Not tainted 4.14.232-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
syz-executor397 D27416 7974 7973 0x00000004
Call Trace:
context_switch kernel/sched/core.c:2808 [inline]
__schedule+0x88b/0x1de0 kernel/sched/core.c:3384
schedule+0x8d/0x1b0 kernel/sched/core.c:3428
io_schedule+0xb5/0x120 kernel/sched/core.c:5032
bit_wait_io+0x12/0x90 kernel/sched/wait_bit.c:249
__wait_on_bit_lock+0xc2/0x1d0 kernel/sched/wait_bit.c:89
out_of_line_wait_on_bit_lock+0xbc/0xd0 kernel/sched/wait_bit.c:116
wait_on_bit_lock_io include/linux/wait_bit.h:213 [inline]
__lock_buffer+0x43/0x50 fs/buffer.c:72
lock_buffer include/linux/buffer_head.h:374 [inline]
__sync_dirty_buffer+0x214/0x290 fs/buffer.c:3235
__ext4_handle_dirty_metadata+0x169/0x480 fs/ext4/ext4_jbd2.c:300
ext4_convert_inline_data_nolock+0x4ce/0xb40 fs/ext4/inline.c:1246
ext4_convert_inline_data+0x2ae/0x300 fs/ext4/inline.c:2001
ext4_fallocate+0x106/0x1d80 fs/ext4/extents.c:4964
vfs_fallocate+0x346/0x790 fs/open.c:319
SYSC_fallocate fs/open.c:342 [inline]
SyS_fallocate+0x4a/0x80 fs/open.c:336
do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292
entry_SYSCALL_64_after_hwframe+0x46/0xbb
RIP: 0033:0x4447b9
RSP: 002b:00007ffc71abfef8 EFLAGS: 00000246 ORIG_RAX: 000000000000011d
RAX: ffffffffffffffda RBX: 0030656c69662f2e RCX: 00000000004447b9
RDX: 000000000000048d RSI: 0000000000000000 RDI: 0000000000000003
RBP: 0000000000000000 R08: 00000000004b0080 R09: 00000000004b0080
R10: 0000000000000006 R11: 0000000000000246 R12: 00007ffc71abff20
R13: 0000000000000000 R14: 431bde82d7b634db R15: 00000000004004a0
Showing all locks held in the system:
1 lock held by khungtaskd/1533:
#0: (tasklist_lock){.+.+}, at: [<ffffffff8700b7b7>] debug_show_all_locks+0x7c/0x21a kernel/locking/lockdep.c:4548
1 lock held by in:imklog/7627:
#0: (&f->f_pos_lock){+.+.}, at: [<ffffffff818d39ab>] __fdget_pos+0x1fb/0x2b0 fs/file.c:769
2 locks held by syz-executor397/7974:
#0: (sb_writers#3){.+.+}, at: [<ffffffff81860161>] file_start_write include/linux/fs.h:2712 [inline]
#0: (sb_writers#3){.+.+}, at: [<ffffffff81860161>] vfs_fallocate+0x5c1/0x790 fs/open.c:318
#1: (&ei->xattr_sem){++++}, at: [<ffffffff81b96bed>] ext4_write_lock_xattr fs/ext4/xattr.h:141 [inline]
#1: (&ei->xattr_sem){++++}, at: [<ffffffff81b96bed>] ext4_convert_inline_data+0x19d/0x300 fs/ext4/inline.c:1999
=============================================
NMI backtrace for cpu 1
CPU: 1 PID: 1533 Comm: khungtaskd Not tainted 4.14.232-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
__dump_stack lib/dump_stack.c:17 [inline]
dump_stack+0x1b2/0x281 lib/dump_stack.c:58
nmi_cpu_backtrace.cold+0x57/0x93 lib/nmi_backtrace.c:101
nmi_trigger_cpumask_backtrace+0x13a/0x180 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+0x5b9/0xb40 kernel/hung_task.c:274
kthread+0x30d/0x420 kernel/kthread.c:232
ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:404
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 4624 Comm: systemd-journal Not tainted 4.14.232-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
task: ffff8880a106e140 task.stack: ffff8880a1070000
RIP: 0010:unwind_next_frame+0xfa6/0x17d0 arch/x86/kernel/unwind_orc.c:474
RSP: 0018:ffff8880a1077740 EFLAGS: 00000206
RAX: 0000000000000005 RBX: 1ffff1101420eeef RCX: ffffffff8a731d9a
RDX: ffff8880a1077840 RSI: 0000000000000000 RDI: ffffffff8a731d9c
RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000000001
R10: ffff8880a1077e50 R11: 0000000000000001 R12: ffff8880a1077835
R13: ffff8880a1077838 R14: ffff8880a1077850 R15: ffff8880a1077800
FS: 00007f3b9267d8c0(0000) GS:ffff8880ba400000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f3b8fa48000 CR3: 00000000a15a3000 CR4: 00000000001406f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
__save_stack_trace+0x90/0x160 arch/x86/kernel/stacktrace.c:44
save_stack mm/kasan/kasan.c:447 [inline]
set_track mm/kasan/kasan.c:459 [inline]
kasan_kmalloc+0xeb/0x160 mm/kasan/kasan.c:551
kmem_cache_alloc_trace+0x131/0x3d0 mm/slab.c:3618
kmalloc include/linux/slab.h:488 [inline]
kzalloc include/linux/slab.h:661 [inline]
aa_alloc_file_ctx security/apparmor/include/file.h:60 [inline]
apparmor_file_alloc_security+0x129/0x800 security/apparmor/lsm.c:431
security_file_alloc+0x66/0xa0 security/security.c:874
get_empty_filp+0x15c/0x3e0 fs/file_table.c:129
path_openat+0x84/0x2970 fs/namei.c:3545
do_filp_open+0x179/0x3c0 fs/namei.c:3603
do_sys_open+0x296/0x410 fs/open.c:1081
do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292
entry_SYSCALL_64_after_hwframe+0x46/0xbb
RIP: 0033:0x7f3b91c0c840
RSP: 002b:00007ffc825d65a8 EFLAGS: 00000246 ORIG_RAX: 0000000000000002
RAX: ffffffffffffffda RBX: 00007ffc825d68b0 RCX: 00007f3b91c0c840
RDX: 00000000000001a0 RSI: 0000000000080042 RDI: 000055f858cdb320
RBP: 000000000000000d R08: 0000000000000000 R09: 00000000ffffffff
R10: 0000000000000069 R11: 0000000000000246 R12: 00000000ffffffff
R13: 000055f858cce040 R14: 00007ffc825d6870 R15: 000055f858cd9c10
Code: c1 49 c1 e9 03 41 0f b6 34 31 49 89 f9 41 83 e1 07 45 38 c8 41 0f 9e c1 45 84 c0 41 0f 95 c0 45 84 c1 0f 85 2e 04 00 00 83 e0 07 <40> 38 c6 41 0f 9e c0 40 84 f6 0f 95 c0 41 84 c0 0f 85 15 04 00