INFO: task syz-executor.4:14357 blocked for more than 143 seconds.
Not tainted 6.4.0-syzkaller-10173-ga901a3568fd2 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.4 state:D stack:24584 pid:14357 ppid:5033 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5381 [inline]
__schedule+0x1873/0x48f0 kernel/sched/core.c:6710
schedule+0xc3/0x180 kernel/sched/core.c:6786
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
init_module_from_file kernel/module/main.c:3125 [inline]
__do_sys_finit_module kernel/module/main.c:3171 [inline]
__se_sys_finit_module+0x48d/0x8d0 kernel/module/main.c:3154
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: 0033:0x7f9eb728c389
RSP: 002b:00007f9eb7fa0168 EFLAGS: 00000246 ORIG_RAX: 0000000000000139
RAX: ffffffffffffffda RBX: 00007f9eb73abf80 RCX: 00007f9eb728c389
RDX: 0000000000000003 RSI: 0000000020000000 RDI: 0000000000000003
RBP: 00007f9eb72d7493 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffd2ec6124f R14: 00007f9eb7fa0300 R15: 0000000000022000
Showing all locks held in the system:
1 lock held by rcu_tasks_kthre/13:
#0: ffffffff8d326af0 (rcu_tasks.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x29/0xd20 kernel/rcu/tasks.h:522
1 lock held by rcu_tasks_trace/14:
#0: ffffffff8d326eb0 (rcu_tasks_trace.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x29/0xd20 kernel/rcu/tasks.h:522
1 lock held by khungtaskd/28:
#0: ffffffff8d326920 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x0/0x30
2 locks held by getty/4746:
#0: ffff88814acb3098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:243
#1: ffffc900015a02f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6b1/0x1db0 drivers/tty/n_tty.c:2176
1 lock held by syz-executor.5/5028:
#0: ffffffff8d32bfb8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:325 [inline]
#0: ffffffff8d32bfb8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x46c/0x890 kernel/rcu/tree_exp.h:992
1 lock held by syz-executor.3/5041:
#0: ffffffff8d32bfb8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:293 [inline]
#0: ffffffff8d32bfb8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x3a3/0x890 kernel/rcu/tree_exp.h:992
2 locks held by kworker/0:8/5098:
#0: ffff888012872538 ((wq_completion)rcu_gp){+.+.}-{0:0}, at: process_one_work+0x7e3/0x12c0 kernel/workqueue.c:2569
#1: ffffc90005377d20 ((work_completion)(&rew->rew_work)){+.+.}-{0:0}, at: process_one_work+0x82b/0x12c0 kernel/workqueue.c:2571
2 locks held by kworker/1:7/5108:
5 locks held by kworker/u4:1/16436:
2 locks held by syz-executor.2/17009:
1 lock held by syz-executor.4/17050:
#0: ffff8880784d20e0 (&type->s_umount_key#88/1){+.+.}-{3:3}, at: alloc_super+0x217/0x920 fs/super.c:228
=============================================
NMI backtrace for cpu 0
CPU: 0 PID: 28 Comm: khungtaskd Not tainted 6.4.0-syzkaller-10173-ga901a3568fd2 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/27/2023
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:160 [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:389
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: 5143 Comm: kworker/1:9 Not tainted 6.4.0-syzkaller-10173-ga901a3568fd2 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/27/2023
Workqueue: events nsim_dev_trap_report_work
RIP: 0010:lockdep_hardirqs_on_prepare+0x14a/0x7a0 kernel/locking/lockdep.c:4353
Code: 00 00 00 00 00 fc ff df f6 44 24 41 02 0f 85 83 03 00 00 48 c7 c0 60 62 f9 91 48 c1 e8 03 0f b6 04 10 84 c0 0f 85 70 05 00 00 <83> 3d 0f 53 8e 10 00 75 33 48 c7 c0 85 9e 97 8e 48 c1 e8 03 0f b6
RSP: 0018:ffffc900054f7780 EFLAGS: 00000097
RAX: 0000000000000004 RBX: 1ffff92000a9eef8 RCX: ffffffff91f96203
RDX: dffffc0000000000 RSI: ffffffff8b5894c0 RDI: ffffffff8b589480
RBP: ffffc900054f7828 R08: ffffffff8e97ceaf R09: 1ffffffff1d2f9d5
R10: dffffc0000000000 R11: fffffbfff1d2f9d6 R12: 0000000000000016
R13: ffff8880b9938d60 R14: ffffc900054f77c0 R15: 1ffff92000a9eef4
FS: 0000000000000000(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020492000 CR3: 000000001876f000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
trace_hardirqs_on+0x28/0x40 kernel/trace/trace_preemptirq.c:61
crng_make_state+0x370/0x790 drivers/char/random.c:372
_get_random_bytes+0xd7/0x2b0 drivers/char/random.c:385
eth_random_addr include/linux/etherdevice.h:232 [inline]
nsim_dev_trap_skb_build drivers/net/netdevsim/dev.c:758 [inline]
nsim_dev_trap_report drivers/net/netdevsim/dev.c:808 [inline]
nsim_dev_trap_report_work+0x2fd/0xa90 drivers/net/netdevsim/dev.c:853
process_one_work+0x92c/0x12c0 kernel/workqueue.c:2597
worker_thread+0xa63/0x1210 kernel/workqueue.c:2748
kthread+0x2b8/0x350 kernel/kthread.c:389
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308