INFO: task syz.0.5956:28422 blocked for more than 144 seconds.
Tainted: G L syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.0.5956 state:D stack:27928 pid:28422 tgid:28414 ppid:20713 task_flags:0x400140 flags:0x00080002
Call Trace:
context_switch kernel/sched/core.c:5504 [inline]
__schedule+0x125c/0x6730 kernel/sched/core.c:7228
__schedule_loop kernel/sched/core.c:7307 [inline]
schedule+0xdd/0x390 kernel/sched/core.c:7322
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:7379
__mutex_lock_common kernel/locking/mutex.c:726 [inline]
__mutex_lock+0xccc/0x1bd0 kernel/locking/mutex.c:821
bdev_open+0xa2/0xe40 block/bdev.c:948
bdev_file_open_by_dev block/bdev.c:1062 [inline]
bdev_file_open_by_dev+0x179/0x210 block/bdev.c:1037
setup_bdev_super+0x78/0x730 fs/super.c:1552
get_tree_bdev_flags+0x363/0x620 fs/super.c:1632
gfs2_get_tree+0x4e/0x280 fs/gfs2/ops_fstype.c:1332
vfs_get_tree+0x92/0x320 fs/super.c:1694
fc_mount fs/namespace.c:1198 [inline]
do_new_mount_fc fs/namespace.c:3765 [inline]
do_new_mount fs/namespace.c:3841 [inline]
path_mount+0x7d0/0x23d0 fs/namespace.c:4161
do_mount fs/namespace.c:4174 [inline]
__do_sys_mount fs/namespace.c:4390 [inline]
__se_sys_mount fs/namespace.c:4367 [inline]
__x64_sys_mount+0x293/0x310 fs/namespace.c:4367
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0x115/0x870 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f016bd9ce59
RSP: 002b:00007f016cc3f028 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007f016c016270 RCX: 00007f016bd9ce59
RDX: 0000200000000240 RSI: 0000200000000100 RDI: 0000200000000180
RBP: 00007f016be32d6f R08: 0000000000000000 R09: 0000000000000000
R10: 000000000100801f R11: 0000000000000246 R12: 0000000000000000
R13: 00007f016c016308 R14: 00007f016c016270 R15: 00007ffcfe90f208
INFO: lockdep is turned off.
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 31 Comm: khungtaskd Tainted: G L syzkaller #0 PREEMPT(full)
Tainted: [L]=SOFTLOCKUP
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026
Call Trace:
__dump_stack lib/dump_stack.c:94 [inline]
dump_stack_lvl+0x100/0x190 lib/dump_stack.c:120
nmi_cpu_backtrace.cold+0x12d/0x151 lib/nmi_backtrace.c:113
nmi_trigger_cpumask_backtrace+0x1d7/0x230 lib/nmi_backtrace.c:62
trigger_all_cpu_backtrace include/linux/nmi.h:162 [inline]
__sys_info lib/sys_info.c:157 [inline]
sys_info+0x141/0x190 lib/sys_info.c:165
check_hung_uninterruptible_tasks kernel/hung_task.c:353 [inline]
watchdog+0xcb1/0x1030 kernel/hung_task.c:561
kthread+0x370/0x450 kernel/kthread.c:436
ret_from_fork+0x72b/0xd50 arch/x86/kernel/process.c:158
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 28442 Comm: syz-executor Tainted: G L syzkaller #0 PREEMPT(full)
Tainted: [L]=SOFTLOCKUP
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026
RIP: 0010:__sanitizer_cov_trace_const_cmp4+0x0/0x20 kernel/kcov.c:313
Code: 0c 24 0f b7 d6 0f b7 f7 bf 03 00 00 00 e9 58 fe ff ff 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 0f 1e fa 48 8b 0c 24 89 f2 89 fe bf 05 00 00 00 e9 2a fe ff ff
RSP: 0018:ffffc90004cb72a8 EFLAGS: 00000046
RAX: 0000000000000000 RBX: ffffea000156f880 RCX: ffffffff8245470c
RDX: ffff8880438cca80 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffea000156f8b0 R08: 0000000000000005 R09: 00000000ff000000
R10: 00000000ffffffff R11: 1ffffffff1cfea19 R12: ffff8880740b61c0
R13: ffffea000156f888 R14: 0000000000000000 R15: 000000000000000b
FS: 0000000000000000(0000) GS:ffff88812445f000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fd2fe84ceb8 CR3: 00000000b0a7a000 CR4: 00000000003526f0
Call Trace:
filemap_unaccount_folio+0x111/0xb20 mm/filemap.c:155
delete_from_page_cache_batch+0x1d8/0xcc0 mm/filemap.c:335
truncate_inode_pages_range+0x276/0x1050 mm/truncate.c:405
ext4_evict_inode+0x3e3/0x1960 fs/ext4/inode.c:210
evict+0x3c2/0xad0 fs/inode.c:828
iput_final fs/inode.c:2022 [inline]
iput.part.0+0x989/0x1050 fs/inode.c:2071
iput+0x35/0x40 fs/inode.c:2037
dentry_unlink_inode+0x284/0x470 fs/dcache.c:479
dentry_kill+0x25d/0xc20 fs/dcache.c:826
finish_dput fs/dcache.c:1001 [inline]
dput.part.0+0xd7/0x240 fs/dcache.c:1042
dput+0x1f/0x30 fs/dcache.c:1037
__fput+0x519/0xb50 fs/file_table.c:520
task_work_run+0x150/0x240 kernel/task_work.c:233
exit_task_work include/linux/task_work.h:40 [inline]
do_exit+0x951/0x2ae0 kernel/exit.c:1004
do_group_exit+0xd5/0x2a0 kernel/exit.c:1147
get_signal+0x1ec7/0x21e0 kernel/signal.c:3038
arch_do_signal_or_restart+0x91/0x7e0 arch/x86/kernel/signal.c:337
__exit_to_user_mode_loop kernel/entry/common.c:66 [inline]
exit_to_user_mode_loop+0x139/0x6f0 kernel/entry/common.c:101
__exit_to_user_mode_prepare include/linux/irq-entry-common.h:207 [inline]
syscall_exit_to_user_mode_prepare include/linux/irq-entry-common.h:230 [inline]
syscall_exit_to_user_mode include/linux/entry-common.h:318 [inline]
do_syscall_64+0x666/0x870 arch/x86/entry/syscall_64.c:100
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f8727157fd7
Code: Unable to access opcode bytes at 0x7f8727157fad.
RSP: 002b:00007fffa4709810 EFLAGS: 00000202 ORIG_RAX: 000000000000003d
RAX: fffffffffffffe00 RBX: 0000555570feb500 RCX: 00007f8727157fd7
RDX: 0000000040000000 RSI: 00007fffa470986c RDI: ffffffffffffffff
RBP: 00007fffa470986c R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000008
R13: 0000000000000003 R14: 00007fffa4709ac8 R15: 0000000000000000