INFO: task syz-executor.5:15389 blocked for more than 143 seconds.
Not tainted 6.6.0-rc6-syzkaller-00043-gdd72f9c7e512 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.5 state:D stack:23496 pid:15389 ppid:5083 flags:0x00004006
Call Trace:
context_switch kernel/sched/core.c:5382 [inline]
__schedule+0x196c/0x4af0 kernel/sched/core.c:6695
schedule+0xc3/0x180 kernel/sched/core.c:6771
schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:6830
rwsem_down_write_slowpath+0xee6/0x13a0 kernel/locking/rwsem.c:1178
__down_write_common+0x1aa/0x200 kernel/locking/rwsem.c:1306
do_remount fs/namespace.c:2879 [inline]
path_mount+0xbdd/0xfa0 fs/namespace.c:3654
do_mount fs/namespace.c:3675 [inline]
__do_sys_mount fs/namespace.c:3884 [inline]
__se_sys_mount+0x2d9/0x3c0 fs/namespace.c:3861
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7fef0a47e1ea
RSP: 002b:00007fef0b1fbee8 EFLAGS: 00000202 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007fef0b1fbf80 RCX: 00007fef0a47e1ea
RDX: 0000000020000180 RSI: 0000000020000100 RDI: 0000000000000000
RBP: 0000000020000180 R08: 00007fef0b1fbf80 R09: 0000000001a404ac
R10: 0000000001a404ac R11: 0000000000000202 R12: 0000000020000100
R13: 00007fef0b1fbf40 R14: 0000000000000000 R15: 0000000020000200
INFO: task syz-executor.1:15416 blocked for more than 143 seconds.
Not tainted 6.6.0-rc6-syzkaller-00043-gdd72f9c7e512 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.1 state:D
stack:23528 pid:15416 ppid:5073 flags:0x00004006
Call Trace:
context_switch kernel/sched/core.c:5382 [inline]
__schedule+0x196c/0x4af0 kernel/sched/core.c:6695
schedule+0xc3/0x180 kernel/sched/core.c:6771
jfs_flush_journal+0x72b/0xec0 fs/jfs/jfs_logmgr.c:1564
jfs_sync_fs+0x80/0xa0 fs/jfs/super.c:684
iterate_supers+0xc2/0x180 fs/super.c:968
ksys_sync+0xdb/0x1c0 fs/sync.c:104
__do_sys_sync+0xe/0x20 fs/sync.c:113
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f9785c7cae9
RSP: 002b:00007f97869940c8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a2
RAX: ffffffffffffffda RBX: 00007f9785d9bf80 RCX: 00007f9785c7cae9
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 00007f9785cc847a R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000000b R14: 00007f9785d9bf80 R15: 00007ffca9518f98
Showing all locks held in the system:
1 lock held by khungtaskd/29:
#0: ffffffff8d32c460 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:303 [inline]
#0: ffffffff8d32c460 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:749 [inline]
#0: ffffffff8d32c460 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x55/0x2a0 kernel/locking/lockdep.c:6613
2 locks held by kworker/u4:7/1049:
2 locks held by getty/4793:
#0: ffff88802659e0a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:243
#1: ffffc90002f062f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6b1/0x1dc0 drivers/tty/n_tty.c:2206
3 locks held by kworker/u4:2/8780:
1 lock held by syz-executor.5/15389:
#0: ffff8880362d00e0 (&type->s_umount_key#65){++++}-{3:3}, at: do_remount fs/namespace.c:2879 [inline]
#0: ffff8880362d00e0 (&type->s_umount_key#65){++++}-{3:3}, at: path_mount+0xbdd/0xfa0 fs/namespace.c:3654
1 lock held by syz-executor.1/15416:
#0: ffff8880362d00e0 (&type->s_umount_key#65){++++}-{3:3}, at: __super_lock fs/super.c:58 [inline]
#0: ffff8880362d00e0 (&type->s_umount_key#65){++++}-{3:3}, at: super_lock+0x176/0x390 fs/super.c:117
1 lock held by syz-executor.1/15549:
#0: ffff8880362d00e0 (&type->s_umount_key#65){++++}-{3:3}, at: __super_lock fs/super.c:58 [inline]
#0: ffff8880362d00e0 (&type->s_umount_key#65){++++}-{3:3}, at: super_lock+0x176/0x390 fs/super.c:117
4 locks held by kworker/u4:4/16245:
#0: ffff888012871938 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:2605 [inline]
#0: ffff888012871938 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_scheduled_works+0x825/0x1400 kernel/workqueue.c:2703
#1: ffffc9001a4f7d20 ((work_completion)(&fs_info->async_reclaim_work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:2605 [inline]
#1: ffffc9001a4f7d20 ((work_completion)(&fs_info->async_reclaim_work)){+.+.}-{0:0}, at: process_scheduled_works+0x825/0x1400 kernel/workqueue.c:2703
#2: ffff8880b993c318 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x2a/0x140 kernel/sched/core.c:558
#3: ffff888025d1a3a8 (btrfs_trans_num_extwriters){++++}-{0:0}, at: join_transaction+0x400/0xce0 fs/btrfs/transaction.c:294
=============================================
NMI backtrace for cpu 0
CPU: 0 PID: 29 Comm: khungtaskd Not tainted 6.6.0-rc6-syzkaller-00043-gdd72f9c7e512 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/06/2023
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0x1e7/0x2d0 lib/dump_stack.c:106
nmi_cpu_backtrace+0x498/0x4d0 lib/nmi_backtrace.c:113
nmi_trigger_cpumask_backtrace+0x198/0x310 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+0xfa9/0xff0 kernel/hung_task.c:379
kthread+0x2d3/0x370 kernel/kthread.c:388
ret_from_fork+0x48/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:304
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 4476 Comm: klogd Not tainted 6.6.0-rc6-syzkaller-00043-gdd72f9c7e512 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/06/2023
RIP: 0010:format_decode+0x5c4/0x1bb0 lib/vsprintf.c:2569
Code: 0f b6 04 37 84 c0 0f 85 bc 00 00 00 41 0f b6 5d 00 48 89 df 48 c7 c6 e0 d6 82 8e e8 a6 6b c5 f6 83 fb 2a 7e 24 83 fb 2b 74 60 <83> fb 30 74 39 83 fb 2d 0f 85 f4 00 00 00 e8 c9 66 c5 f6 48 bb 00
RSP: 0018:ffffc9000315f720 EFLAGS: 00000212
RAX: 0000000000000000 RBX: 0000000000000036 RCX: 000000008b0b6400
RDX: 0000000000000005 RSI: ffffffff8e82d6e0 RDI: 0000000000000036
RBP: ffffc9000315f810 R08: 0000000000000001 R09: ffffffff8ac8a6ca
R10: 0000000000000005 R11: ffff88807e11bb80 R12: ffffffff8b0b6408
R13: ffffffff8b0b6408 R14: dffffc0000000000 R15: 1ffffffff1616c81
FS: 00007f5252a8e380(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000110f29fd51 CR3: 000000007e759000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
vsnprintf+0x14a/0x1d80 lib/vsprintf.c:2770
sprintf+0xda/0x120 lib/vsprintf.c:3022
print_time kernel/printk/printk.c:1327 [inline]
info_print_prefix+0x16b/0x300 kernel/printk/printk.c:1353
record_print_text kernel/printk/printk.c:1402 [inline]
syslog_print+0x4b7/0x9b0 kernel/printk/printk.c:1613
do_syslog+0x505/0x890 kernel/printk/printk.c:1732
__do_sys_syslog kernel/printk/printk.c:1824 [inline]
__se_sys_syslog kernel/printk/printk.c:1822 [inline]
__x64_sys_syslog+0x7c/0x90 kernel/printk/printk.c:1822
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f5252beffa7
Code: 73 01 c3 48 8b 0d 81 ce 0c 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 b8 67 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 51 ce 0c 00 f7 d8 64 89 01 48
RSP: 002b:00007ffdfd2cef28 EFLAGS: 00000206 ORIG_RAX: 0000000000000067
RAX: ffffffffffffffda RBX: 00007f5252d8e4a0 RCX: 00007f5252beffa7
RDX: 00000000000003ff RSI: 00007f5252d8e4a0 RDI: 0000000000000002
RBP: 0000000000000000 R08: 0000000000000005 R09: 81b0cc9dd5d2b633
R10: 0000000000004000 R11: 0000000000000206 R12: 00007f5252d8e4a0
R13: 00007f5252d7e212 R14: 00007f5252d8e503 R15: 00007f5252d8e503