INFO: task syz-executor.5:17721 blocked for more than 143 seconds.
Not tainted 6.5.0-rc4-next-20230731-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.5 state:D stack:30192 pid:17721 ppid:5081 flags:0x00000006
Call Trace:
context_switch kernel/sched/core.c:5382 [inline]
__schedule+0xee1/0x59f0 kernel/sched/core.c:6711
schedule+0xe7/0x1b0 kernel/sched/core.c:6787
schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:6846
rwsem_down_read_slowpath+0x625/0xb20 kernel/locking/rwsem.c:1086
__down_read_common kernel/locking/rwsem.c:1250 [inline]
__down_read kernel/locking/rwsem.c:1263 [inline]
down_read+0xf0/0x470 kernel/locking/rwsem.c:1522
inode_lock_shared include/linux/fs.h:812 [inline]
lookup_slow fs/namei.c:1706 [inline]
walk_component+0x33b/0x5a0 fs/namei.c:1998
lookup_last fs/namei.c:2455 [inline]
path_lookupat+0x17f/0x770 fs/namei.c:2479
filename_lookup+0x1e7/0x5b0 fs/namei.c:2508
user_path_at_empty+0x42/0x60 fs/namei.c:2907
user_path_at include/linux/namei.h:57 [inline]
do_mount fs/namespace.c:3672 [inline]
__do_sys_mount fs/namespace.c:3884 [inline]
__se_sys_mount fs/namespace.c:3861 [inline]
__x64_sys_mount+0x1ff/0x310 fs/namespace.c:3861
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x38/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f7312c7cae9
RSP: 002b:00007f731397f0c8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007f7312d9c050 RCX: 00007f7312c7cae9
RDX: 0000000020000040 RSI: 0000000020000140 RDI: 0000000000000000
RBP: 00007f7312cc847a R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000002000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000006e R14: 00007f7312d9c050 R15: 00007fffc46c9468
INFO: task syz-executor.5:17722 blocked for more than 145 seconds.
Not tainted 6.5.0-rc4-next-20230731-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.5 state:D
stack:30192 pid:17722 ppid:5081 flags:0x00000006
Call Trace:
context_switch kernel/sched/core.c:5382 [inline]
__schedule+0xee1/0x59f0 kernel/sched/core.c:6711
schedule+0xe7/0x1b0 kernel/sched/core.c:6787
schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:6846
rwsem_down_write_slowpath+0x53e/0x1290 kernel/locking/rwsem.c:1178
__down_write_common kernel/locking/rwsem.c:1306 [inline]
__down_write kernel/locking/rwsem.c:1315 [inline]
down_write_nested+0x1d7/0x200 kernel/locking/rwsem.c:1690
inode_lock_nested include/linux/fs.h:837 [inline]
filename_create+0x1c2/0x530 fs/namei.c:3886
do_mkdirat+0xb3/0x330 fs/namei.c:4132
__do_sys_mkdir fs/namei.c:4160 [inline]
__se_sys_mkdir fs/namei.c:4158 [inline]
__x64_sys_mkdir+0xf2/0x140 fs/namei.c:4158
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x38/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f7312c7cae9
RSP: 002b:00007f731395e0c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000053
RAX: ffffffffffffffda RBX: 00007f7312d9c120 RCX: 00007f7312c7cae9
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000020000240
RBP: 00007f7312cc847a R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000006e R14: 00007f7312d9c120 R15: 00007fffc46c9468
INFO: lockdep is turned off.
NMI backtrace for cpu 1
CPU: 1 PID: 28 Comm: khungtaskd Not tainted 6.5.0-rc4-next-20230731-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2023
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0xd9/0x1b0 lib/dump_stack.c:106
nmi_cpu_backtrace+0x277/0x380 lib/nmi_backtrace.c:113
nmi_trigger_cpumask_backtrace+0x2ac/0x310 lib/nmi_backtrace.c:62
trigger_all_cpu_backtrace include/linux/nmi.h:160 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:222 [inline]
watchdog+0xfab/0x1230 kernel/hung_task.c:379
kthread+0x33a/0x430 kernel/kthread.c:389
ret_from_fork+0x2c/0x70 arch/x86/kernel/process.c:145
ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:304
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 20158 Comm: syz-executor.4 Not tainted 6.5.0-rc4-next-20230731-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2023
RIP: 0010:write_comp_data+0x7/0x90 kernel/kcov.c:230
Code: 81 e2 00 01 ff 00 75 10 65 48 8b 04 25 40 ba 03 00 48 8b 80 f8 15 00 00 c3 66 2e 0f 1f 84 00 00 00 00 00 65 8b 05 d1 2f 7d 7e <49> 89 f1 89 c6 49 89 d2 81 e6 00 01 00 00 49 89 f8 65 48 8b 14 25
RSP: 0018:ffffc9001823f6c0 EFLAGS: 00000046
RAX: 0000000080000002 RBX: ffffc9001823f818 RCX: ffffffff8a2bc435
RDX: 0000000000000000 RSI: 000000000000003f RDI: 0000000000000001
RBP: 0000000000000127 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 000000000000725e R12: ffff8880a23e82c0
R13: 0000000000000000 R14: 0000000000000000 R15: ffffc9001823f818
FS: 00007f9ef93a86c0(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fc30c978038 CR3: 000000003bcbc000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
get_offset lib/xarray.c:146 [inline]
xas_descend+0x75/0x4e0 lib/xarray.c:205
xas_load+0xe0/0x140 lib/xarray.c:244
xas_store+0xb14/0x1950 lib/xarray.c:789
page_cache_delete+0x1d5/0x570 mm/filemap.c:145
__filemap_remove_folio mm/filemap.c:228 [inline]
filemap_remove_folio+0xfe/0x250 mm/filemap.c:260
truncate_inode_folio+0x49/0x70 mm/truncate.c:195
shmem_undo_range+0x363/0x1190 mm/shmem.c:1003
shmem_truncate_range mm/shmem.c:1119 [inline]
shmem_evict_inode+0x334/0xb00 mm/shmem.c:1249
evict+0x2ed/0x6b0 fs/inode.c:665
iput_final fs/inode.c:1791 [inline]
iput.part.0+0x55e/0x7a0 fs/inode.c:1817
iput+0x5c/0x80 fs/inode.c:1807
dentry_unlink_inode+0x292/0x430 fs/dcache.c:401
__dentry_kill+0x3b8/0x640 fs/dcache.c:607
dentry_kill fs/dcache.c:733 [inline]
dput+0x8dd/0xfd0 fs/dcache.c:913
__fput+0x53c/0xac0 fs/file_table.c:392
task_work_run+0x14d/0x240 kernel/task_work.c:179
resume_user_mode_work include/linux/resume_user_mode.h:49 [inline]
exit_to_user_mode_loop kernel/entry/common.c:171 [inline]
exit_to_user_mode_prepare+0x210/0x240 kernel/entry/common.c:204
__syscall_exit_to_user_mode_work kernel/entry/common.c:286 [inline]
syscall_exit_to_user_mode+0x1d/0x50 kernel/entry/common.c:297
do_syscall_64+0x44/0xb0 arch/x86/entry/common.c:86
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f9ef867c84b
Code: 00 48 89 44 24 18 31 c0 48 8d 44 24 60 c7 04 24 10 00 00 00 48 89 44 24 08 48 8d 44 24 20 48 89 44 24 10 b8 10 00 00 00 0f 05 <89> c2 3d 00 f0 ff ff 77 1c 48 8b 44 24 18 64 48 2b 04 25 28 00 00
RSP: 002b:00007f9ef93a7e90 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: 0000000000000000 RBX: ffffffffffffffff RCX: 00007f9ef867c84b
RDX: 0000000000000000 RSI: 0000000000004c01 RDI: 0000000000000004
RBP: 0000000000000011 R08: 00007f9ef93a7f80 R09: 0000000000010001
R10: 0000000000010001 R11: 0000000000000246 R12: 0000000000000004
R13: 00007f9ef93a7f40 R14: 00000000000055a3 R15: 0000000020000140