INFO: task syz.3.125:4145 blocked for more than 143 seconds.
Not tainted 5.15.165-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.3.125 state:D stack:22624 pid: 4145 ppid: 3567 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5027 [inline]
__schedule+0x12c4/0x45b0 kernel/sched/core.c:6373
schedule+0x11b/0x1f0 kernel/sched/core.c:6456
io_schedule+0x88/0x100 kernel/sched/core.c:8481
TXN_SLEEP_DROP_LOCK+0x161/0x1c0 fs/jfs/jfs_txnmgr.c:125
txBegin+0x112/0x6e0
jfs_mkdir+0x21d/0xbb0 fs/jfs/namei.c:231
vfs_mkdir+0x3b6/0x590 fs/namei.c:4065
do_mkdirat+0x260/0x520 fs/namei.c:4090
__do_sys_mkdirat fs/namei.c:4105 [inline]
__se_sys_mkdirat fs/namei.c:4103 [inline]
__x64_sys_mkdirat+0x85/0x90 fs/namei.c:4103
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7f48137b1797
RSP: 002b:00007f4811c2ee68 EFLAGS: 00000246 ORIG_RAX: 0000000000000102
RAX: ffffffffffffffda RBX: 00007f4811c2eef0 RCX: 00007f48137b1797
RDX: 00000000000001ff RSI: 0000000020000100 RDI: 00000000ffffff9c
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000020000100
R13: 00007f4811c2eeb0 R14: 0000000000000000 R15: 0000000000000000
Showing all locks held in the system:
1 lock held by khungtaskd/27:
#0: ffffffff8c91fbe0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x0/0x30
2 locks held by getty/3330:
#0: ffff88814b87c098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x21/0x70 drivers/tty/tty_ldisc.c:252
#1: ffffc9000229b2e8 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6af/0x1db0 drivers/tty/n_tty.c:2158
2 locks held by kworker/1:15/3849:
#0: ffff888011c72138 ((wq_completion)rcu_gp){+.+.}-{0:0}, at: process_one_work+0x78a/0x10c0 kernel/workqueue.c:2283
#1: ffffc90003087d20 ((work_completion)(&rew.rew_work)){+.+.}-{0:0}, at: process_one_work+0x7d0/0x10c0 kernel/workqueue.c:2285
2 locks held by syz.3.125/4145:
#0: ffff88814b5fc460 (sb_writers#24){.+.+}-{0:0}, at: mnt_want_write+0x3b/0x80 fs/namespace.c:377
#1: ffff8880651c33c0 (&type->i_mutex_dir_key#14/1){+.+.}-{3:3}, at: inode_lock_nested include/linux/fs.h:824 [inline]
#1: ffff8880651c33c0 (&type->i_mutex_dir_key#14/1){+.+.}-{3:3}, at: filename_create+0x25c/0x530 fs/namei.c:3835
2 locks held by syz-executor/5163:
#0: ffff888059c5a0e0 (&type->s_umount_key#54){++++}-{3:3}, at: deactivate_super+0xa9/0xe0 fs/super.c:365
#1: ffffffff8c9241a8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:290 [inline]
#1: ffffffff8c9241a8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x280/0x740 kernel/rcu/tree_exp.h:845
2 locks held by syz-executor/7510:
#0: ffff88801ae3c118 (&disk->open_mutex){+.+.}-{3:3}, at: blkdev_put+0xfb/0x790 block/bdev.c:912
#1: ffff888147b12468 (&lo->lo_mutex){+.+.}-{3:3}, at: __loop_clr_fd+0xa9/0xbe0 drivers/block/loop.c:1365
=============================================
NMI backtrace for cpu 0
CPU: 0 PID: 27 Comm: khungtaskd Not tainted 5.15.165-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0x1e3/0x2d0 lib/dump_stack.c:106
nmi_cpu_backtrace+0x46a/0x4a0 lib/nmi_backtrace.c:111
nmi_trigger_cpumask_backtrace+0x181/0x2a0 lib/nmi_backtrace.c:62
trigger_all_cpu_backtrace include/linux/nmi.h:148 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:210 [inline]
watchdog+0xe72/0xeb0 kernel/hung_task.c:295
kthread+0x3f6/0x4f0 kernel/kthread.c:334
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:287
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 3027 Comm: udevd Not tainted 5.15.165-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024
RIP: 0010:format_decode+0x62e/0x1f10 lib/vsprintf.c:2562
Code: 4d 89 e7 49 c1 ef 03 41 0f b6 04 17 84 c0 0f 85 a9 00 00 00 41 0f be 1e 48 89 df 48 c7 c6 80 89 f3 8c e8 45 34 52 fd 83 c3 e0 <83> fb 10 0f 87 0a 01 00 00 ff 24 dd b8 05 dc 8a e8 cd 2f 52 fd 48
RSP: 0018:ffffc9000afdf660 EFLAGS: 00000207
RAX: 0000000000000000 RBX: 0000000000000053 RCX: 000000000000008b
RDX: 0000000000000005 RSI: ffffffff8cf38980 RDI: 0000000000000073
RBP: ffffc9000afdf750 R08: 0000000000000005 R09: ffffffff842e31bb
R10: 0000000000000005 R11: ffff88807e1f5940 R12: ffffffff8afaa229
R13: 0000001000000000 R14: ffffffff8afaa229 R15: 1ffffffff15f5445
FS: 00007f16a46cfc80(0000) GS:ffff8880b9b00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f4037d3d178 CR3: 000000007d2b7000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
vsnprintf+0x14d/0x1c70 lib/vsprintf.c:2763
add_uevent_var+0x1c0/0x440 lib/kobject_uevent.c:680
dev_uevent+0x386/0x9f0 drivers/base/core.c:2336
kobject_uevent_env+0x470/0x8d0 lib/kobject_uevent.c:572
kobject_synth_uevent+0x4eb/0xae0 lib/kobject_uevent.c:208
uevent_store+0x20/0x60 drivers/base/core.c:2431
kernfs_fop_write_iter+0x3a2/0x4f0 fs/kernfs/file.c:296
call_write_iter include/linux/fs.h:2172 [inline]
new_sync_write fs/read_write.c:507 [inline]
vfs_write+0xacd/0xe50 fs/read_write.c:594
ksys_write+0x1a2/0x2c0 fs/read_write.c:647
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7f16a47fabf2
Code: 89 c7 48 89 44 24 08 e8 7b 34 fa ff 48 8b 44 24 08 48 83 c4 28 c3 c3 64 8b 04 25 18 00 00 00 85 c0 75 20 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 76 6f 48 8b 15 07 a2 0d 00 f7 d8 64 89 02 48 83
RSP: 002b:00007fff5e7f8ad8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00005635f22fe600 RCX: 00007f16a47fabf2
RDX: 0000000000000007 RSI: 00005635f22eb950 RDI: 000000000000000c
RBP: 0000000000000007 R08: 00005635f22eb950 R09: 0000000000000020
R10: 000000000000010f R11: 0000000000000246 R12: 0000000000000007
R13: 00005635f22eb950 R14: 00007fff5e7f8eb8 R15: 0000000000000000