INFO: task segctord:10428 blocked for more than 143 seconds.
Not tainted 6.2.0-rc7-syzkaller-00011-g05ecb680708a #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:segctord state:D stack:28440 pid:10428 ppid:2 flags:0x00004000
Call Trace:
__schedule+0x13ca/0x43c0
schedule+0xc3/0x190
rwsem_down_write_slowpath+0xfb5/0x1490
nilfs_transaction_lock+0x25c/0x4f0
nilfs_segctor_thread+0x51b/0x1150
kthread+0x270/0x300
ret_from_fork+0x1f/0x30
Showing all locks held in the system:
1 lock held by rcu_tasks_kthre/12:
#0: ffffffff8cf26e10 (rcu_tasks.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x26/0xce0
1 lock held by rcu_tasks_trace/13:
#0: ffffffff8cf27610 (rcu_tasks_trace.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x26/0xce0
1 lock held by khungtaskd/28:
#0: ffffffff8cf26c40 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x0/0x30
1 lock held by udevd/4435:
2 locks held by getty/4757:
#0: ffff88802c193098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70
#1: ffffc900015802f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x53b/0x1630
1 lock held by syz-executor.0/5105:
#0: ffffffff8cf2c278 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x389/0x860
2 locks held by kworker/1:5/5162:
#0: ffff8880b993b1d8 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x2a/0x140
#1: ffff8880b9928748 (&per_cpu_ptr(group->pcpu, cpu)->seq){-.-.}-{0:0}, at: psi_task_switch+0x635/0x9d0
2 locks held by kworker/0:11/5731:
#0: ffff888012472538 ((wq_completion)rcu_gp){+.+.}-{0:0}, at: process_one_work+0x7eb/0x13e0
#1: ffffc90014167d20 ((work_completion)(&rew->rew_work)){+.+.}-{0:0}, at: process_one_work+0x835/0x13e0
1 lock held by syz-executor.3/7380:
#0: ffffffff8cf2c278 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x458/0x860
4 locks held by syz-executor.1/10421:
1 lock held by segctord/10428:
#0: ffff888022b762a0 (&nilfs->ns_segctor_sem){++++}-{3:3}, at: nilfs_transaction_lock+0x25c/0x4f0
6 locks held by syz-executor.2/14184:
1 lock held by syz-executor.2/14198:
#0: ffff88803dc0ef90 (&type->i_mutex_dir_key#17){++++}-{3:3}, at: path_openat+0x7a6/0x2e30
1 lock held by syz-executor.2/16442:
2 locks held by syz-executor.1/16441:
=============================================
NMI backtrace for cpu 1
CPU: 1 PID: 28 Comm: khungtaskd Not tainted 6.2.0-rc7-syzkaller-00011-g05ecb680708a #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/12/2023
Call Trace:
dump_stack_lvl+0x1b5/0x2a0
nmi_cpu_backtrace+0x47b/0x500
nmi_trigger_cpumask_backtrace+0x1d3/0x430
watchdog+0xf70/0xfb0
kthread+0x270/0x300
ret_from_fork+0x1f/0x30
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 14270 Comm: udevd Not tainted 6.2.0-rc7-syzkaller-00011-g05ecb680708a #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/12/2023
RIP: 0010:unwind_next_frame+0x1e9/0x22b0
Code: 0f 86 3b 1a 00 00 89 e8 48 8d 1c 85 98 75 6a 8f 48 89 d8 48 c1 e8 03 42 0f b6 04 20 84 c0 4d 89 e6 0f 85 96 1b 00 00 44 8b 23 <89> e8 ff c0 48 8d 1c 85 98 75 6a 8f 48 89 d8 48 c1 e8 03 42 0f b6
RSP: 0018:ffffc90006f5f320 EFLAGS: 00000246
RAX: 0000000000000000 RBX: ffffffff8f89a3d0 RCX: 000000000009e001
RDX: dffffc0000000000 RSI: ffffffff88cb8eeb RDI: ffffffff813c73a7
RBP: 000000000007cb8e R08: 0000000000000006 R09: ffffc90006f5f4d0
R10: 0000000000000000 R11: dffffc0000000001 R12: 000000000014ef60
R13: ffffffff88cb8eea R14: dffffc0000000000 R15: 000000000009e001
FS: 00007f89b9ef0840(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fbbea029000 CR3: 0000000040b3d000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
arch_stack_walk+0xab/0xe0
stack_trace_save+0x10a/0x1e0
kasan_set_track+0x40/0x70
kasan_save_free_info+0x2b/0x40
____kasan_slab_free+0xd6/0x120
__kmem_cache_free+0x264/0x3c0
skb_release_data+0x618/0x7e0
consume_skb+0xac/0x150
netlink_unicast+0x7cb/0x990
netlink_sendmsg+0xa02/0xd10
____sys_sendmsg+0x5c9/0x9c0
__sys_sendmsg+0x275/0x360
do_syscall_64+0x41/0xc0
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f89b9b35163
Code: 64 89 02 48 c7 c0 ff ff ff ff eb b7 66 2e 0f 1f 84 00 00 00 00 00 90 64 8b 04 25 18 00 00 00 85 c0 75 14 b8 2e 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 55 c3 0f 1f 40 00 48 83 ec 28 89 54 24 1c 48
RSP: 002b:00007ffd461ec138 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 0000560866423f40 RCX: 00007f89b9b35163
RDX: 0000000000000000 RSI: 00007ffd461ec148 RDI: 000000000000000c
RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000010000 R11: 0000000000000246 R12: 0000000000000000
R13: 00000000000000b9 R14: 0000000000000000 R15: 00005608663e0910