INFO: task syz-executor.2:10749 blocked for more than 143 seconds.
Not tainted 6.4.0-rc6-syzkaller-00035-g15adb51c04cc #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.2 state:D stack:26144 pid:10749 ppid:5018 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5343 [inline]
__schedule+0x187b/0x4900 kernel/sched/core.c:6669
schedule+0xc3/0x180 kernel/sched/core.c:6745
schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:6804
__mutex_lock_common+0xe33/0x2530 kernel/locking/mutex.c:679
__mutex_lock kernel/locking/mutex.c:747 [inline]
mutex_lock_nested+0x1b/0x20 kernel/locking/mutex.c:799
reiserfs_write_lock+0x7a/0xd0 fs/reiserfs/lock.c:27
reiserfs_ioctl+0x70/0x340 fs/reiserfs/ioctl.c:81
vfs_ioctl fs/ioctl.c:51 [inline]
__do_sys_ioctl fs/ioctl.c:870 [inline]
__se_sys_ioctl+0xf1/0x160 fs/ioctl.c:856
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: 0033:0x7fda8948c199
RSP: 002b:00007fda8a270168 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007fda895ac050 RCX: 00007fda8948c199
RDX: 0000000020000100 RSI: 00000000c0189376 RDI: 0000000000000004
RBP: 00007fda894e7ca1 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffca04e5d2f R14: 00007fda8a270300 R15: 0000000000022000
INFO: task syz-executor.2:10754 blocked for more than 143 seconds.
Not tainted 6.4.0-rc6-syzkaller-00035-g15adb51c04cc #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.2 state:D stack:29016 pid:10754 ppid:5018 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5343 [inline]
__schedule+0x187b/0x4900 kernel/sched/core.c:6669
schedule+0xc3/0x180 kernel/sched/core.c:6745
schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:6804
rwsem_down_write_slowpath+0xedd/0x13a0 kernel/locking/rwsem.c:1178
__down_write_common+0x1aa/0x200 kernel/locking/rwsem.c:1306
inode_lock include/linux/fs.h:775 [inline]
do_truncate+0x20c/0x300 fs/open.c:64
do_sys_ftruncate+0x2e4/0x380 fs/open.c:194
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: 0033:0x7fda8948c199
RSP: 002b:00007fda8a24f168 EFLAGS: 00000246 ORIG_RAX: 000000000000004d
RAX: ffffffffffffffda RBX: 00007fda895ac120 RCX: 00007fda8948c199
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000005
RBP: 00007fda894e7ca1 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffca04e5d2f R14: 00007fda8a24f300 R15: 0000000000022000
Showing all locks held in the system:
1 lock held by rcu_tasks_kthre/13:
#0: ffffffff8cf276f0 (rcu_tasks.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x29/0xd20 kernel/rcu/tasks.h:518
1 lock held by rcu_tasks_trace/14:
#0: ffffffff8cf27ab0 (rcu_tasks_trace.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x29/0xd20 kernel/rcu/tasks.h:518
1 lock held by khungtaskd/28:
#0: ffffffff8cf27520 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x0/0x30
2 locks held by getty/4745:
#0: ffff88802cd7a098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:243
#1: ffffc900015b02f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6ab/0x1db0 drivers/tty/n_tty.c:2176
2 locks held by syz-executor.3/5045:
#0: ffff888078d880e0 (&type->s_umount_key#61){++++}-{3:3}, at: deactivate_super+0xad/0xf0 fs/super.c:361
#1: ffffffff8cf2cbf8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:325 [inline]
#1: ffffffff8cf2cbf8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x46c/0x890 kernel/rcu/tree_exp.h:992
4 locks held by kworker/0:24/23382:
#0: ffff888012471538 ((wq_completion)events_long){+.+.}-{0:0}, at: process_one_work+0x77e/0x10e0 kernel/workqueue.c:2378
#1: ffffc90016267d20 ((work_completion)(&(&sbi->old_work)->work)){+.+.}-{0:0}, at: process_one_work+0x7c8/0x10e0 kernel/workqueue.c:2380
#2: ffff8880773de0e0 (&type->s_umount_key#48){++++}-{3:3}, at: flush_old_commits+0xcb/0x2f0 fs/reiserfs/super.c:97
#3: ffff8880177e1090 (&sbi->lock){+.+.}-{3:3}, at: reiserfs_write_lock+0x7a/0xd0 fs/reiserfs/lock.c:27
2 locks held by kworker/0:15/5493:
#0: ffff888012472538 ((wq_completion)rcu_gp){+.+.}-{0:0}, at: process_one_work+0x77e/0x10e0 kernel/workqueue.c:2378
#1: ffffc9000b567d20 ((work_completion)(&rew->rew_work)){+.+.}-{0:0}, at: process_one_work+0x7c8/0x10e0 kernel/workqueue.c:2380
1 lock held by syz-executor.1/6295:
#0: ffffffff8cf2cbf8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:293 [inline]
#0: ffffffff8cf2cbf8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x3a3/0x890 kernel/rcu/tree_exp.h:992
2 locks held by kworker/0:18/14558:
#0: ffff888012470d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x77e/0x10e0 kernel/workqueue.c:2378
#1: ffffc90004d4fd20 ((work_completion)(&pwq->unbound_release_work)){+.+.}-{0:0}, at: process_one_work+0x7c8/0x10e0 kernel/workqueue.c:2380
3 locks held by syz-executor.2/10710:
1 lock held by syz-executor.2/10749:
#0: ffff8880177e1090 (&sbi->lock){+.+.}-{3:3}, at: reiserfs_write_lock+0x7a/0xd0 fs/reiserfs/lock.c:27
2 locks held by syz-executor.2/10754:
#0: ffff8880773de460 (sb_writers#34){.+.+}-{0:0}, at: do_sys_ftruncate+0x24c/0x380 fs/open.c:191
#1: ffff888034cb4bc0 (&sb->s_type->i_mutex_key#37){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:775 [inline]
#1: ffff888034cb4bc0 (&sb->s_type->i_mutex_key#37){+.+.}-{3:3}, at: do_truncate+0x20c/0x300 fs/open.c:64
1 lock held by syz-executor.0/13117:
3 locks held by syz-executor.5/13129:
#0: ffff888019724460 (sb_writers#4){.+.+}-{0:0}, at: mnt_want_write_file+0x5e/0x1f0 fs/namespace.c:438
#1: ffff888084cf5e00 (&sb->s_type->i_mutex_key#7){++++}-{3:3}, at: inode_lock include/linux/fs.h:775 [inline]
#1: ffff888084cf5e00 (&sb->s_type->i_mutex_key#7){++++}-{3:3}, at: vfs_fileattr_set+0x139/0xd40 fs/ioctl.c:681
#2: ffff888037890b98 (&sbi->s_writepages_rwsem){++++}-{0:0}, at: ext4_writepages_down_write fs/ext4/ext4.h:1703 [inline]
#2: ffff888037890b98 (&sbi->s_writepages_rwsem){++++}-{0:0}, at: ext4_ind_migrate+0x26a/0x8d0 fs/ext4/migrate.c:625
2 locks held by syz-executor.5/13130:
#0: ffff888019724460 (sb_writers#4){.+.+}-{0:0}, at: mnt_want_write+0x3f/0x90 fs/namespace.c:394
#1: ffff888084cf5e00 (&sb->s_type->i_mutex_key#7){++++}-{3:3}, at: inode_lock include/linux/fs.h:775 [inline]
#1: ffff888084cf5e00 (&sb->s_type->i_mutex_key#7){++++}-{3:3}, at: process_measurement+0x435/0x1ce0 security/integrity/ima/ima_main.c:243
1 lock held by syz-executor.2/13135:
#0: ffff888033ca00e0 (&type->s_umount_key#54/1){+.+.}-{3:3}, at: alloc_super+0x217/0x930 fs/super.c:228
=============================================
NMI backtrace for cpu 1
CPU: 1 PID: 28 Comm: khungtaskd Not tainted 6.4.0-rc6-syzkaller-00035-g15adb51c04cc #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/25/2023
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+0x187/0x300 lib/nmi_backtrace.c:62
trigger_all_cpu_backtrace include/linux/nmi.h:148 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:222 [inline]
watchdog+0xec2/0xf00 kernel/hung_task.c:379
kthread+0x2b8/0x350 kernel/kthread.c:379
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 6295 Comm: syz-executor.1 Not tainted 6.4.0-rc6-syzkaller-00035-g15adb51c04cc #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/25/2023
RIP: 0010:get_current arch/x86/include/asm/current.h:41 [inline]
RIP: 0010:__sanitizer_cov_trace_pc+0x8/0x60 kernel/kcov.c:206
Code: 00 00 f3 0f 1e fa 53 48 89 fb e8 13 00 00 00 48 8b 3d 84 58 ca 0c 48 89 de 5b e9 c3 01 57 00 0f 1f 00 f3 0f 1e fa 48 8b 04 24 <65> 48 8b 0d 10 38 78 7e 65 8b 15 11 38 78 7e f7 c2 00 01 ff 00 74
RSP: 0018:ffffc900035df580 EFLAGS: 00000246
RAX: ffffffff8151f252 RBX: 0000000000000000 RCX: ffff888063379dc0
RDX: ffff888063379dc0 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffff8880226d9700 R08: ffffffff8151f1b2 R09: ffffed100f0c0e24
R10: 0000000000000000 R11: dffffc0000000001 R12: dffffc0000000000
R13: 1ffff1100f0c0e22 R14: ffff888078607110 R15: ffff888078605940
FS: 0000555556abe400(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f911498f718 CR3: 000000007a308000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
try_release_thread_stack_to_cache kernel/fork.c:208 [inline]
free_thread_stack kernel/fork.c:339 [inline]
release_task_stack kernel/fork.c:593 [inline]
put_task_stack+0x162/0x1f0 kernel/fork.c:600
finish_task_switch+0x283/0x650 kernel/sched/core.c:5248
context_switch kernel/sched/core.c:5346 [inline]
__schedule+0x1883/0x4900 kernel/sched/core.c:6669
schedule+0xc3/0x180 kernel/sched/core.c:6745
schedule_timeout+0xb0/0x310 kernel/time/timer.c:2143
do_wait_for_common+0x449/0x5f0 kernel/sched/completion.c:85
__wait_for_common kernel/sched/completion.c:106 [inline]
wait_for_common kernel/sched/completion.c:117 [inline]
wait_for_completion+0x4a/0x60 kernel/sched/completion.c:138
kthread_stop+0x18e/0x5a0 kernel/kthread.c:700
close_ctree+0x44c/0xc60 fs/btrfs/disk-io.c:4597
generic_shutdown_super+0x134/0x340 fs/super.c:500
kill_anon_super+0x3b/0x60 fs/super.c:1107
btrfs_kill_super+0x41/0x50 fs/btrfs/super.c:2144
deactivate_locked_super+0xa4/0x110 fs/super.c:331
cleanup_mnt+0x426/0x4c0 fs/namespace.c:1177
task_work_run+0x24a/0x300 kernel/task_work.c:179
resume_user_mode_work include/linux/resume_user_mode.h:49 [inline]
exit_to_user_mode_loop+0xd9/0x100 kernel/entry/common.c:171
exit_to_user_mode_prepare+0xb1/0x140 kernel/entry/common.c:204
__syscall_exit_to_user_mode_work kernel/entry/common.c:286 [inline]
syscall_exit_to_user_mode+0x64/0x280 kernel/entry/common.c:297
do_syscall_64+0x4d/0xc0 arch/x86/entry/common.c:86
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7fdeede8d607
Code: ff ff ff f7 d8 64 89 01 48 83 c8 ff c3 66 0f 1f 44 00 00 31 f6 e9 09 00 00 00 66 0f 1f 84 00 00 00 00 00 b8 a6 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fff72277618 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007fdeede8d607
RDX: 00007fff722776e9 RSI: 000000000000000a RDI: 00007fff722776e0
RBP: 00007fff722776e0 R08: 00000000ffffffff R09: 00007fff722774b0
R10: 0000555556abf873 R11: 0000000000000246 R12: 00007fdeedee6cdc
R13: 00007fff722787a0 R14: 0000555556abf810 R15: 00007fff722787e0