INFO: task syz-executor.4:7796 blocked for more than 143 seconds.
Not tainted 6.8.0-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.4 state:D stack:20272 pid:7796 tgid:7790 ppid:5093 flags:0x00004006
Call Trace:
context_switch kernel/sched/core.c:5400 [inline]
__schedule+0x177f/0x49a0 kernel/sched/core.c:6727
__schedule_loop kernel/sched/core.c:6802 [inline]
schedule+0x149/0x260 kernel/sched/core.c:6817
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6874
__mutex_lock_common kernel/locking/mutex.c:684 [inline]
__mutex_lock+0x6a3/0xd70 kernel/locking/mutex.c:752
__fdget_pos+0x258/0x320 fs/file.c:1191
fdget_pos include/linux/file.h:74 [inline]
ksys_read+0x82/0x2c0 fs/read_write.c:610
do_syscall_64+0xf9/0x240
entry_SYSCALL_64_after_hwframe+0x6f/0x77
RIP: 0033:0x7f625d87dda9
RSP: 002b:00007f625e67d0c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000000
RAX: ffffffffffffffda RBX: 00007f625d9ac050 RCX: 00007f625d87dda9
RDX: 0000000000002020 RSI: 0000000020006940 RDI: 0000000000000006
RBP: 00007f625d8ca47a R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000006e R14: 00007f625d9ac050 R15: 00007ffeda10ab18
INFO: task syz-executor.4:7800 blocked for more than 144 seconds.
Not tainted 6.8.0-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.4 state:D stack:23376 pid:7800 tgid:7790 ppid:5093 flags:0x00004006
Call Trace:
context_switch kernel/sched/core.c:5400 [inline]
__schedule+0x177f/0x49a0 kernel/sched/core.c:6727
__schedule_loop kernel/sched/core.c:6802 [inline]
schedule+0x149/0x260 kernel/sched/core.c:6817
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6874
__mutex_lock_common kernel/locking/mutex.c:684 [inline]
__mutex_lock+0x6a3/0xd70 kernel/locking/mutex.c:752
__fdget_pos+0x258/0x320 fs/file.c:1191
fdget_pos include/linux/file.h:74 [inline]
ksys_write+0x82/0x2c0 fs/read_write.c:634
do_syscall_64+0xf9/0x240
entry_SYSCALL_64_after_hwframe+0x6f/0x77
RIP: 0033:0x7f625d87dda9
RSP: 002b:00007f625e65c0c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f625d9ac120 RCX: 00007f625d87dda9
RDX: 0000000000000348 RSI: 0000000020000780 RDI: 0000000000000006
RBP: 00007f625d8ca47a R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000006e R14: 00007f625d9ac120 R15: 00007ffeda10ab18
Showing all locks held in the system:
1 lock held by khungtaskd/29:
#0: ffffffff8e130be0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:298 [inline]
#0: ffffffff8e130be0 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:750 [inline]
#0: ffffffff8e130be0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x55/0x2a0 kernel/locking/lockdep.c:6614
3 locks held by kworker/u4:4/61:
2 locks held by kworker/u4:9/1108:
#0: ffff8880b953c918 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x2a/0x140 kernel/sched/core.c:559
#1: ffff8880b9528988 (&per_cpu_ptr(group->pcpu, cpu)->seq){-.-.}-{0:0}, at: psi_task_switch+0x441/0x770 kernel/sched/psi.c:988
2 locks held by kworker/u4:11/2873:
#0: ffff8880b953c918 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x2a/0x140 kernel/sched/core.c:559
#1: ffff8880b9528988 (&per_cpu_ptr(group->pcpu, cpu)->seq){-.-.}-{0:0}, at: psi_task_switch+0x441/0x770 kernel/sched/psi.c:988
2 locks held by getty/4820:
#0: ffff888029b750a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:243
#1: ffffc90002efe2f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6b4/0x1e10 drivers/tty/n_tty.c:2201
3 locks held by syz-executor.4/7791:
1 lock held by syz-executor.4/7796:
#0: ffff88802c70a0c8 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0x258/0x320 fs/file.c:1191
1 lock held by syz-executor.4/7800:
#0: ffff88802c70a0c8 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0x258/0x320 fs/file.c:1191
4 locks held by syz-executor.2/7994:
1 lock held by syz-executor.2/7998:
#0: ffff88801c313748 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0x258/0x320 fs/file.c:1191
1 lock held by syz-executor.2/8000:
#0: ffff88801c313748 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0x258/0x320 fs/file.c:1191
3 locks held by syz-executor.1/8604:
1 lock held by syz-executor.1/8617:
#0: ffff88802cb10848 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0x258/0x320 fs/file.c:1191
1 lock held by syz-executor.1/8631:
#0: ffff88802cb10848 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0x258/0x320 fs/file.c:1191
3 locks held by syz-executor.3/8736:
1 lock held by syz-executor.3/8743:
#0: ffff88802f044ac8 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0x258/0x320 fs/file.c:1191
1 lock held by syz-executor.3/8745:
#0: ffff88802f044ac8 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0x258/0x320 fs/file.c:1191
3 locks held by syz-executor.0/8804:
1 lock held by syz-executor.0/8808:
#0: ffff88801938dc48 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0x258/0x320 fs/file.c:1191
1 lock held by syz-executor.0/8810:
#0: ffff88801938dc48 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0x258/0x320 fs/file.c:1191
2 locks held by syz-executor.2/9239:
2 locks held by syz-executor.0/9238:
2 locks held by syz-executor.1/9241:
#0: ffff8880b943c918 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x2a/0x140 kernel/sched/core.c:559
#1: ffff8880b9428988 (&per_cpu_ptr(group->pcpu, cpu)->seq){-.-.}-{0:0}, at: psi_task_switch+0x441/0x770 kernel/sched/psi.c:988
=============================================
NMI backtrace for cpu 1
CPU: 1 PID: 29 Comm: khungtaskd Not tainted 6.8.0-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/29/2024
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0x1e7/0x2e0 lib/dump_stack.c:106
nmi_cpu_backtrace+0x49c/0x4d0 lib/nmi_backtrace.c:113
nmi_trigger_cpumask_backtrace+0x198/0x320 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+0xfaf/0xff0 kernel/hung_task.c:379
kthread+0x2ef/0x390 kernel/kthread.c:388
ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1b/0x30 arch/x86/entry/entry_64.S:243
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 8077 Comm: syz-executor.4 Not tainted 6.8.0-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/29/2024
RIP: 0010:__hlist_del include/linux/list.h:990 [inline]
RIP: 0010:hlist_del include/linux/list.h:1002 [inline]
RIP: 0010:__alloc_object lib/debugobjects.c:213 [inline]
RIP: 0010:alloc_object+0x128/0x6d0 lib/debugobjects.c:226
Code: 08 4c 89 f7 e8 99 2d 53 fd 49 89 2e 48 85 ed 74 27 48 83 c5 08 48 89 e8 48 c1 e8 03 48 b9 00 00 00 00 00 fc ff df 80 3c 08 00 <74> 08 48 89 ef e8 6e 2d 53 fd 4c 89 75 00 49 be 00 00 00 00 00 fc
RSP: 0018:ffffc900148a7ad0 EFLAGS: 00000046
RAX: 1ffff1100f536343 RBX: ffff88807ea219d8 RCX: dffffc0000000000
RDX: ffffffff8bacab00 RSI: ffffffff8bfd98c0 RDI: ffffffff8bfd9880
RBP: ffff88807a9b1a18 R08: 0000000000000003 R09: fffff52002914f48
R10: dffffc0000000000 R11: fffff52002914f48 R12: 1ffff1100fd4433b
R13: ffff88807ea219e0 R14: ffff8880b9438f20 R15: 1ffff1100fd4433c
FS: 00005555572d5480(0000) GS:ffff8880b9400000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f5276f79198 CR3: 000000002c9e6000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
lookup_object_or_alloc lib/debugobjects.c:587 [inline]
__debug_object_init+0x175/0x400 lib/debugobjects.c:633
debug_hrtimer_init kernel/time/hrtimer.c:416 [inline]
debug_init+0x24/0x210 kernel/time/hrtimer.c:470
hrtimer_init+0x22/0x40 kernel/time/hrtimer.c:1596
tcp_init_xmit_timers+0x4c/0xc0 net/ipv4/tcp_timer.c:859
tcp_init_sock+0x70/0x850 net/ipv4/tcp.c:419
tcp_v4_init_sock+0x21/0x80 net/ipv4/tcp_ipv4.c:2472
inet_create+0xb97/0xe80 net/ipv4/af_inet.c:385
__sock_create+0x48f/0x920 net/socket.c:1571
sock_create net/socket.c:1622 [inline]
__sys_socket_create net/socket.c:1659 [inline]
__sys_socket+0x14f/0x3c0 net/socket.c:1706
__do_sys_socket net/socket.c:1720 [inline]
__se_sys_socket net/socket.c:1718 [inline]
__x64_sys_socket+0x7a/0x90 net/socket.c:1718
do_syscall_64+0xf9/0x240
entry_SYSCALL_64_after_hwframe+0x6f/0x77
RIP: 0033:0x7f5276e7fb27
Code: f0 ff ff 77 06 c3 0f 1f 44 00 00 48 c7 c2 b0 ff ff ff f7 d8 64 89 02 b8 ff ff ff ff c3 66 0f 1f 44 00 00 b8 29 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b0 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fffd4c86168 EFLAGS: 00000202 ORIG_RAX: 0000000000000029
RAX: ffffffffffffffda RBX: 00000000ffffffff RCX: 00007f5276e7fb27
RDX: 0000000000000006 RSI: 0000000000000001 RDI: 0000000000000002
RBP: 00007fffd4c8687c R08: 00007fffd4c8615c R09: 00007fffd4c86567
R10: 00007fffd4c861e0 R11: 0000000000000202 R12: 0000000000000001
R13: 0000000000070c7f R14: 0000000000070c7f R15: 0000000000000000