INFO: task kworker/u4:23:7722 blocked for more than 143 seconds.
Not tainted 6.4.0-rc1-syzkaller-00138-gd4d58949a6ea #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/u4:23 state:D stack:25048 pid:7722 ppid:2 flags:0x00004000
Workqueue: events_unbound io_ring_exit_work
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_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
io_ring_exit_work+0x6fd/0x850 io_uring/io_uring.c:3077
process_one_work+0x8a0/0x10e0 kernel/workqueue.c:2405
worker_thread+0xa63/0x1210 kernel/workqueue.c:2552
kthread+0x2b8/0x350 kernel/kthread.c:379
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308
INFO: task kworker/u4:27:8204 blocked for more than 144 seconds.
Not tainted 6.4.0-rc1-syzkaller-00138-gd4d58949a6ea #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/u4:27 state:D stack:25592 pid:8204 ppid:2 flags:0x00004000
Workqueue: events_unbound io_ring_exit_work
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_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
io_ring_exit_work+0x6fd/0x850 io_uring/io_uring.c:3077
process_one_work+0x8a0/0x10e0 kernel/workqueue.c:2405
worker_thread+0xa63/0x1210 kernel/workqueue.c:2552
kthread+0x2b8/0x350 kernel/kthread.c:379
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308
INFO: task syz-executor.1:15918 blocked for more than 144 seconds.
Not tainted 6.4.0-rc1-syzkaller-00138-gd4d58949a6ea #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.1 state:D stack:24584 pid:15918 ppid:6806 flags:0x00024004
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_read_slowpath+0x5f4/0x950 kernel/locking/rwsem.c:1086
__down_read_common+0x61/0x2c0 kernel/locking/rwsem.c:1250
user_get_super+0x11e/0x250 fs/super.c:877
quotactl_block fs/quota/quota.c:890 [inline]
__do_sys_quotactl fs/quota/quota.c:954 [inline]
__se_sys_quotactl+0x51e/0x810 fs/quota/quota.c:916
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: 0033:0x7f2fd448c169
RSP: 002b:00007f2fd51e7168 EFLAGS: 00000246 ORIG_RAX: 00000000000000b3
RAX: ffffffffffffffda RBX: 00007f2fd45abf80 RCX: 00007f2fd448c169
RDX: 0000000000000000 RSI: 0000000020000600 RDI: ffffffff80000800
RBP: 00007f2fd44e7ca1 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000020000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffe45c840af R14: 00007f2fd51e7300 R15: 0000000000022000
Showing all locks held in the system:
2 locks held by kworker/u4:0/10:
#0: ffff888012479138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work+0x77e/0x10e0 kernel/workqueue.c:2378
#1: ffffc900000f7d20 ((work_completion)(&ctx->exit_work)){+.+.}-{0:0}, at: process_one_work+0x7c8/0x10e0 kernel/workqueue.c:2380
1 lock held by rcu_tasks_kthre/13:
#0: ffffffff8cf27670 (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: ffffffff8cf27a30 (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: ffffffff8cf274a0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x0/0x30
2 locks held by kworker/u4:2/33:
2 locks held by getty/4742:
#0: ffff88802a3c2098 (&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
4 locks held by syz-executor.1/6744:
#0: ffff88807e0e20e0 (&type->s_umount_key#23/1){+.+.}-{3:3}, at: alloc_super+0x217/0x930 fs/super.c:228
#1: ffff8880749fb140 (&type->i_mutex_dir_key#10){++++}-{3:3}, at: inode_lock include/linux/fs.h:775 [inline]
#1: ffff8880749fb140 (&type->i_mutex_dir_key#10){++++}-{3:3}, at: reiserfs_xattr_init+0x1e6/0x670 fs/reiserfs/xattr.c:1005
#2: ffffc90015a750f0 (&journal->j_mutex){+.+.}-{3:3}, at: reiserfs_mutex_lock_safe fs/reiserfs/reiserfs.h:814 [inline]
#2: ffffc90015a750f0 (&journal->j_mutex){+.+.}-{3:3}, at: lock_journal fs/reiserfs/journal.c:534 [inline]
#2: ffffc90015a750f0 (&journal->j_mutex){+.+.}-{3:3}, at: do_journal_end+0x390/0x4770 fs/reiserfs/journal.c:4025
#3: ffff8880173fd890 (&jl->j_commit_mutex){+.+.}-{3:3}, at: reiserfs_mutex_lock_safe fs/reiserfs/reiserfs.h:814 [inline]
#3: ffff8880173fd890 (&jl->j_commit_mutex){+.+.}-{3:3}, at: flush_commit_list+0x66a/0x1bf0 fs/reiserfs/journal.c:1007
2 locks held by kworker/u4:23/7722:
#0: ffff888012479138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work+0x77e/0x10e0 kernel/workqueue.c:2378
#1: ffffc90015057d20 ((work_completion)(&ctx->exit_work)){+.+.}-{0:0}, at: process_one_work+0x7c8/0x10e0 kernel/workqueue.c:2380
4 locks held by syz-executor.2/7943:
2 locks held by kworker/u4:26/8166:
#0: ffff888012479138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work+0x77e/0x10e0 kernel/workqueue.c:2378
#1: ffffc90006db7d20 ((work_completion)(&ctx->exit_work)){+.+.}-{0:0}, at: process_one_work+0x7c8/0x10e0 kernel/workqueue.c:2380
2 locks held by kworker/u4:27/8204:
#0: ffff888012479138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work+0x77e/0x10e0 kernel/workqueue.c:2378
#1: ffffc90007617d20 ((work_completion)(&ctx->exit_work)){+.+.}-{0:0}, at: process_one_work+0x7c8/0x10e0 kernel/workqueue.c:2380
4 locks held by syz-executor.4/8310:
1 lock held by syz-executor.1/15918:
#0: ffff88807e0e20e0 (&type->s_umount_key#52){++++}-{3:3}, at: user_get_super+0x11e/0x250 fs/super.c:877
1 lock held by syz-executor.1/16061:
#0: ffff88807e0e20e0 (&type->s_umount_key#52){++++}-{3:3}, at: user_get_super+0x11e/0x250 fs/super.c:877
1 lock held by syz-executor.1/16116:
#0: ffff88807e0e20e0 (&type->s_umount_key#52){++++}-{3:3}, at: user_get_super+0x11e/0x250 fs/super.c:877
=============================================
NMI backtrace for cpu 0
CPU: 0 PID: 28 Comm: khungtaskd Not tainted 6.4.0-rc1-syzkaller-00138-gd4d58949a6ea #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/28/2023
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 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 47 Comm: kworker/u4:3 Not tainted 6.4.0-rc1-syzkaller-00138-gd4d58949a6ea #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/28/2023
Workqueue: bat_events batadv_nc_worker
RIP: 0010:__lock_acquire+0x143/0x2000
Code: e8 03 0f b6 04 30 84 c0 48 89 54 24 30 0f 85 d2 15 00 00 83 3d 9d fd 46 10 00 75 09 83 fa 30 0f 83 e4 13 00 00 44 89 6c 24 4c <44> 89 64 24 60 4c 89 7c 24 50 44 8b a4 24 d0 00 00 00 48 c7 c0 60
RSP: 0018:ffffc90000b87998 EFLAGS: 00000087
RAX: 0000000000000004 RBX: ffffffff9001f8a0 RCX: ffffffff91b20103
RDX: 0000000000000002 RSI: dffffc0000000000 RDI: ffff888013ab6400
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000000000000
R13: 0000000000000002 R14: ffffffff8cf274a0 R15: ffff888013ab5940
FS: 0000000000000000(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000564318aad1d0 CR3: 000000002bf2a000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
lock_acquire+0x1e3/0x520 kernel/locking/lockdep.c:5691
rcu_lock_acquire+0x2e/0x40 include/linux/rcupdate.h:327
rcu_read_lock include/linux/rcupdate.h:773 [inline]
batadv_nc_purge_orig_hash net/batman-adv/network-coding.c:408 [inline]
batadv_nc_worker+0xc5/0x5c0 net/batman-adv/network-coding.c:719
process_one_work+0x8a0/0x10e0 kernel/workqueue.c:2405
worker_thread+0xa63/0x1210 kernel/workqueue.c:2552
kthread+0x2b8/0x350 kernel/kthread.c:379
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308