INFO: task syz.5.100:6729 blocked in I/O wait for more than 143 seconds.
INFO: task syz.5.100:6729 blocked in I/O wait for more than 143 seconds.
Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.5.100 state:D stack:24824 pid:6729 tgid:6728 ppid:5883 task_flags:0x400140 flags:0x00080002
Call Trace:
context_switch kernel/sched/core.c:5504 [inline]
__schedule+0x16dc/0x5500 kernel/sched/core.c:7228
__schedule_loop kernel/sched/core.c:7307 [inline]
schedule+0x164/0x360 kernel/sched/core.c:7322
io_schedule+0x80/0xe0 kernel/sched/core.c:8150
folio_wait_bit_common+0x83c/0xbc0 mm/filemap.c:1324
folio_lock include/linux/pagemap.h:1159 [inline]
release_metapage+0x101/0xa50 fs/jfs/jfs_metapage.c:871
discard_metapage fs/jfs/jfs_metapage.h:88 [inline]
__get_metapage+0x9ac/0xdf0 fs/jfs/jfs_metapage.c:754
dtSearch+0x56c/0x2010 fs/jfs/jfs_dtree.c:621
jfs_lookup+0x1b0/0x420 fs/jfs/namei.c:1464
lookup_one_qstr_excl+0x12d/0x360 fs/namei.c:1810
__start_dirop fs/namei.c:2920 [inline]
start_dirop fs/namei.c:2942 [inline]
filename_create+0x20e/0x370 fs/namei.c:4951
filename_mkdirat+0xd2/0x520 fs/namei.c:5298
__do_sys_mkdirat fs/namei.c:5326 [inline]
__se_sys_mkdirat+0x35/0x150 fs/namei.c:5323
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0x174/0x580 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f3c7ed5bcc7
RSP: 002b:00007f3c7cfb5e58 EFLAGS: 00000246 ORIG_RAX: 0000000000000102
RAX: ffffffffffffffda RBX: 00007f3c7cfb5ee0 RCX: 00007f3c7ed5bcc7
RDX: 00000000000001ff RSI: 0000200000000340 RDI: 00000000ffffff9c
RBP: 0000200000000180 R08: 00002000000000c0 R09: 0000000000000000
R10: 0000200000000180 R11: 0000000000000246 R12: 0000200000000340
R13: 00007f3c7cfb5ea0 R14: 0000000000000000 R15: 0000000000000000
INFO: lockdep is turned off.
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 38 Comm: khungtaskd Not tainted syzkaller #0 PREEMPT_{RT,(full)}
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026
Call Trace:
dump_stack_lvl+0xe8/0x150 lib/dump_stack.c:120
nmi_cpu_backtrace+0x274/0x2d0 lib/nmi_backtrace.c:122
nmi_trigger_cpumask_backtrace+0x17a/0x380 lib/nmi_backtrace.c:65
trigger_all_cpu_backtrace include/linux/nmi.h:162 [inline]
__sys_info lib/sys_info.c:157 [inline]
sys_info+0x135/0x170 lib/sys_info.c:165
check_hung_uninterruptible_tasks kernel/hung_task.c:353 [inline]
watchdog+0xfd7/0x1030 kernel/hung_task.c:561
kthread+0x388/0x470 kernel/kthread.c:436
ret_from_fork+0x514/0xb70 arch/x86/kernel/process.c:158
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 5587 Comm: udevd Not tainted syzkaller #0 PREEMPT_{RT,(full)}
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026
RIP: 0010:qlink_to_object mm/kasan/quarantine.c:140 [inline]
RIP: 0010:qlink_free mm/kasan/quarantine.c:145 [inline]
RIP: 0010:qlist_free_all+0x6f/0x100 mm/kasan/quarantine.c:179
Code: 49 8b 44 04 08 89 c2 83 e2 01 48 ff ca 48 09 c2 48 21 ca 0f b6 42 33 c1 e0 18 3d 00 00 00 f5 49 0f 45 d5 4c 8b 62 08 49 8b 2f <49> 63 84 24 b8 00 00 00 49 29 c7 4c 89 e7 4c 89 fe e8 5b e4 ff ff
RSP: 0018:ffffc900048d77f0 EFLAGS: 00000246
RAX: 00000000f5000000 RBX: ffffc900048d7828 RCX: ffffea0000cf9900
RDX: ffffea0000cf9900 RSI: ffffffff8ba92a60 RDI: ffff888033e644c0
RBP: ffff8880569dac20 R08: ffffffff8f89c2f7 R09: 1ffffffff1f1385e
R10: dffffc0000000000 R11: fffffbfff1f1385f R12: ffff88801a011780
R13: 0000000000000000 R14: 0000000000000000 R15: ffff888033e644c0
FS: 00007ff1b66bb880(0000) GS:ffff888126142000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00005555782aea68 CR3: 000000003afa4000 CR4: 00000000003526f0
Call Trace:
kasan_quarantine_reduce+0x148/0x160 mm/kasan/quarantine.c:286
__kasan_slab_alloc+0x22/0x80 mm/kasan/common.c:350
kasan_slab_alloc include/linux/kasan.h:253 [inline]
slab_post_alloc_hook mm/slub.c:4612 [inline]
slab_alloc_node mm/slub.c:4945 [inline]
__do_kmalloc_node mm/slub.c:5361 [inline]
__kmalloc_noprof+0x3b6/0x780 mm/slub.c:5387
_kmalloc_noprof include/linux/slab.h:973 [inline]
tomoyo_realpath_from_path+0xef/0x640 security/tomoyo/realpath.c:251
tomoyo_get_realpath security/tomoyo/file.c:151 [inline]
tomoyo_path2_perm+0x2c5/0x760 security/tomoyo/file.c:927
tomoyo_path_rename+0x14e/0x1b0 security/tomoyo/tomoyo.c:300
security_path_rename+0x248/0x460 security/security.c:1544
filename_renameat2+0x4ba/0x9b0 fs/namei.c:6183
__do_sys_rename fs/namei.c:6232 [inline]
__se_sys_rename+0x55/0x2c0 fs/namei.c:6228
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0x174/0x580 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7ff1b677ccc7
Code: e8 5e a7 09 00 f7 d8 19 c0 5b c3 0f 1f 84 00 00 00 00 00 b8 ff ff ff ff 5b c3 66 0f 1f 84 00 00 00 00 00 b8 52 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 01 c3 48 8b 15 01 61 17 00 f7 d8 64 89 02 b8
RSP: 002b:00007ffdb77d4748 EFLAGS: 00000202 ORIG_RAX: 0000000000000052
RAX: ffffffffffffffda RBX: 000055da07079a40 RCX: 00007ff1b677ccc7
RDX: 0000000000000000 RSI: 000055da07079a40 RDI: 00007ffdb77d4c00
RBP: 000055da07079a5d R08: 00007ffdb77d4c00 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000202 R12: 00007ffdb77d4c00
R13: 00007ffdb77d4800 R14: 000055d9fbbc26d7 R15: 00007ffdb77d5890