INFO: task syz.0.25:5381 blocked for more than 151 seconds.
Not tainted 6.11.0-syzkaller-07337-g2004cef11ea0 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.0.25 state:D stack:23800 pid:5381 tgid:5375 ppid:5215 flags:0x00000004
Call Trace:
context_switch kernel/sched/core.c:5264 [inline]
__schedule+0x1843/0x4b00 kernel/sched/core.c:6607
__schedule_loop kernel/sched/core.c:6684 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6699
__lock_sock+0x1cd/0x330 net/core/sock.c:3048
lock_sock_nested+0x9e/0x100 net/core/sock.c:3616
do_ip_getsockopt+0x14ab/0x2940 net/ipv4/ip_sockglue.c:1703
ip_getsockopt+0xed/0x2e0 net/ipv4/ip_sockglue.c:1765
tcp_getsockopt+0x163/0x1c0 net/ipv4/tcp.c:4670
do_sock_getsockopt+0x3c4/0x7e0 net/socket.c:2392
__sys_getsockopt+0x26b/0x330 net/socket.c:2421
__do_sys_getsockopt net/socket.c:2431 [inline]
__se_sys_getsockopt net/socket.c:2428 [inline]
__x64_sys_getsockopt+0xb5/0xd0 net/socket.c:2428
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7faea1d7def9
RSP: 002b:00007faea17ff038 EFLAGS: 00000246 ORIG_RAX: 0000000000000037
RAX: ffffffffffffffda RBX: 00007faea1f36058 RCX: 00007faea1d7def9
RDX: 0000000000000010 RSI: 0000000000000000 RDI: 0000000000000003
RBP: 00007faea1df0b76 R08: 0000000020000180 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007faea1f36058 R15: 00007ffe6f99d7b8
Showing all locks held in the system:
1 lock held by khungtaskd/30:
#0: ffffffff8e9389e0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:337 [inline]
#0: ffffffff8e9389e0 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:849 [inline]
#0: ffffffff8e9389e0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x55/0x2a0 kernel/locking/lockdep.c:6701
2 locks held by udevd/4669:
2 locks held by getty/4972:
#0: ffff88814bc810a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:243
#1: ffffc90002f062f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6a6/0x1e00 drivers/tty/n_tty.c:2211
4 locks held by kworker/0:5/5271:
#0: ffff8880b883e958 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x2a/0x140 kernel/sched/core.c:585
#1: ffff8880b8828948 (&per_cpu_ptr(group->pcpu, cpu)->seq){-.-.}-{0:0}, at: psi_task_switch+0x441/0x770 kernel/sched/psi.c:989
#2: ffff8880b882a718 (&base->lock){-.-.}-{2:2}, at: lock_timer_base+0x112/0x240 kernel/time/timer.c:1051
#3: ffffffff9a5f5838 (&obj_hash[i].lock){-.-.}-{2:2}, at: debug_object_activate+0x16d/0x510 lib/debugobjects.c:708
1 lock held by syz.0.25/5376:
1 lock held by syz.0.25/5381:
#0: ffff888030623558 (sk_lock-AF_INET){+.+.}-{0:0}, at: do_ip_getsockopt+0x14ab/0x2940 net/ipv4/ip_sockglue.c:1703
=============================================
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 30 Comm: khungtaskd Not tainted 6.11.0-syzkaller-07337-g2004cef11ea0 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024
Call Trace:
__dump_stack lib/dump_stack.c:93 [inline]
dump_stack_lvl+0x241/0x360 lib/dump_stack.c:119
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:162 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:223 [inline]
watchdog+0xff4/0x1040 kernel/hung_task.c:379
kthread+0x2f0/0x390 kernel/kthread.c:389
ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 4669 Comm: udevd Not tainted 6.11.0-syzkaller-07337-g2004cef11ea0 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024
RIP: 0010:rcu_rdp_cpu_online kernel/rcu/tree.c:4740 [inline]
RIP: 0010:rcu_lockdep_current_cpu_online+0x92/0x120 kernel/rcu/tree.c:4781
Code: 7e 00 48 8b 03 48 8d 98 00 f9 03 00 48 8d b8 20 f9 03 00 48 89 f8 48 c1 e8 03 42 80 3c 30 00 74 05 e8 b2 1c 7e 00 4c 8b 7b 20 <48> 83 c3 18 48 89 d8 48 c1 e8 03 42 80 3c 30 00 74 08 48 89 df e8
RSP: 0018:ffffc9000328fba8 EFLAGS: 00000246
RAX: 1ffff11017107f24 RBX: ffff8880b883f900 RCX: 0000000080000001
RDX: ffff88807b9fbc00 RSI: ffffffff8c6008e0 RDI: ffff8880b883f920
RBP: ffffc9000328fc60 R08: ffffffff8159a740 R09: 1ffffffff28432f0
R10: dffffc0000000000 R11: fffffbfff28432f1 R12: ffff88807cafdc80
R13: 1ffff1100f73f8a3 R14: dffffc0000000000 R15: 0000000000000001
FS: 00007f5dd353ec80(0000) GS:ffff8880b8800000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020fc7000 CR3: 000000007a922000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
rcu_read_lock_held_common kernel/rcu/update.c:113 [inline]
rcu_read_lock_held+0x1e/0x50 kernel/rcu/update.c:349
__lock_task_sighand+0x119/0x2d0 kernel/signal.c:1395
lock_task_sighand include/linux/sched/signal.h:745 [inline]
do_send_sig_info kernel/signal.c:1298 [inline]
group_send_sig_info+0x274/0x310 kernel/signal.c:1449
bpf_send_signal_common+0x2dd/0x430 kernel/trace/bpf_trace.c:881
____bpf_send_signal kernel/trace/bpf_trace.c:886 [inline]
bpf_send_signal+0x19/0x30 kernel/trace/bpf_trace.c:884
bpf_prog_7ba5217f62dcd359+0x40/0x44
bpf_dispatcher_nop_func include/linux/bpf.h:1243 [inline]
__bpf_prog_run include/linux/filter.h:691 [inline]
bpf_prog_run include/linux/filter.h:698 [inline]
__bpf_trace_run kernel/trace/bpf_trace.c:2406 [inline]
bpf_trace_run2+0x2ec/0x540 kernel/trace/bpf_trace.c:2447
trace_sys_enter+0x93/0xd0 include/trace/events/syscalls.h:18
syscall_trace_enter+0xf8/0x150 kernel/entry/common.c:61
syscall_enter_from_user_mode_work include/linux/entry-common.h:168 [inline]
syscall_enter_from_user_mode include/linux/entry-common.h:198 [inline]
do_syscall_64+0xcc/0x230 arch/x86/entry/common.c:79
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f5dd3123457
Code: 73 01 c3 48 8b 0d d1 d9 0c 00 f7 d8 64 89 01 48 83 c8 ff c3 41 89 ca 64 8b 04 25 18 00 00 00 85 c0 75 20 b8 e8 00 00 00 0f 05 <48> 3d 00 f0 ff ff 76 76 48 8b 15 a2 d9 0c 00 f7 d8 64 89 02 48 83
RSP: 002b:00007ffcfed50f08 EFLAGS: 00000246 ORIG_RAX: 00000000000000e8
RAX: ffffffffffffffda RBX: 00007ffcfed51008 RCX: 00007f5dd3123457
RDX: 0000000000000008 RSI: 00007ffcfed51008 RDI: 000000000000000b
RBP: 000000000000000b R08: 000000000e6a1263 R09: 7fffffffffffffff
R10: 0000000000000bb8 R11: 0000000000000246 R12: 0000000000000bb8
R13: 0000000200000001 R14: 0000000000000001 R15: 0000000000000000