INFO: task syz.3.1316:10047 blocked for more than 143 seconds.
Not tainted 6.11.0-rc5-syzkaller-00742-gfbdaffe41adc #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.3.1316 state:D stack:27360 pid:10047 tgid:10045 ppid:6895 flags:0x00000004
Call Trace:
context_switch kernel/sched/core.c:5188 [inline]
__schedule+0x1800/0x4a60 kernel/sched/core.c:6529
__schedule_loop kernel/sched/core.c:6606 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6621
__lock_sock+0x1cd/0x330 net/core/sock.c:2980
lock_sock_nested+0x9e/0x100 net/core/sock.c:3548
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:4412
do_sock_getsockopt+0x373/0x850 net/socket.c:2386
__sys_getsockopt+0x271/0x330 net/socket.c:2415
__do_sys_getsockopt net/socket.c:2425 [inline]
__se_sys_getsockopt net/socket.c:2422 [inline]
__x64_sys_getsockopt+0xb5/0xd0 net/socket.c:2422
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: 0033:0x7fcb31979eb9
RSP: 002b:00007fcb326c7038 EFLAGS: 00000246 ORIG_RAX: 0000000000000037
RAX: ffffffffffffffda RBX: 00007fcb31b16058 RCX: 00007fcb31979eb9
RDX: 0000000000000034 RSI: 0000000000000000 RDI: 0000000000000003
RBP: 00007fcb319e793e R08: 00000000200001c0 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000001 R14: 00007fcb31b16058 R15: 00007ffdd648e888
Showing all locks held in the system:
1 lock held by khungtaskd/30:
#0: ffffffff8e938320 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:326 [inline]
#0: ffffffff8e938320 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:838 [inline]
#0: ffffffff8e938320 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x55/0x2a0 kernel/locking/lockdep.c:6626
2 locks held by getty/4996:
#0: ffff8880302650a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:243
#1: ffffc900031232f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6ac/0x1e00 drivers/tty/n_tty.c:2211
1 lock held by syz.3.1316/10046:
1 lock held by syz.3.1316/10047:
#0: ffff8880559d9ad8 (sk_lock-AF_INET){+.+.}-{0:0}, at: do_ip_getsockopt+0x14ab/0x2940 net/ipv4/ip_sockglue.c:1703
=============================================
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 30 Comm: khungtaskd Not tainted 6.11.0-rc5-syzkaller-00742-gfbdaffe41adc #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 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 UID: 101 PID: 5030 Comm: dhcpcd Not tainted 6.11.0-rc5-syzkaller-00742-gfbdaffe41adc #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024
RIP: 0010:__lock_acquire+0x94/0x2040 kernel/locking/lockdep.c:5010
Code: 3c 30 00 74 12 4c 89 ff e8 49 04 8b 00 48 be 00 00 00 00 00 fc ff df 49 8b 07 48 c7 c1 50 57 da 93 48 39 c8 0f 84 72 13 00 00 <8b> 0d a6 78 10 0d 48 c7 c2 40 57 da 93 45 31 f6 48 39 d0 45 0f 44
RSP: 0018:ffffc9000322f8f0 EFLAGS: 00000087
RAX: ffffffff9313fa80 RBX: 0000000000000000 RCX: ffffffff93da5750
RDX: 0000000000000000 RSI: dffffc0000000000 RDI: ffff888025ba8958
RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000001
R10: dffffc0000000000 R11: fffffbfff2030f6e R12: ffff888026120000
R13: 0000000000000001 R14: 0000000000000000 R15: ffff888025ba8958
FS: 00007f298317c740(0000) GS:ffff8880b8900000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00000000201bd000 CR3: 000000006a80a000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
lock_acquire+0x1ed/0x550 kernel/locking/lockdep.c:5759
__raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline]
_raw_spin_lock_irqsave+0xd5/0x120 kernel/locking/spinlock.c:162
__lock_task_sighand+0x149/0x2d0 kernel/signal.c:1412
lock_task_sighand include/linux/sched/signal.h:746 [inline]
do_send_sig_info kernel/signal.c:1300 [inline]
group_send_sig_info+0x274/0x310 kernel/signal.c:1451
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: 0033:0x7f2983249ad5
Code: 85 d2 74 0d 0f 10 02 48 8d 54 24 20 0f 11 44 24 20 64 8b 04 25 18 00 00 00 85 c0 75 27 41 b8 08 00 00 00 b8 0f 01 00 00 0f 05 <48> 3d 00 f0 ff ff 76 75 48 8b 15 24 73 0d 00 f7 d8 64 89 02 48 83
RSP: 002b:00007ffdd694a170 EFLAGS: 00000246 ORIG_RAX: 000000000000010f
RAX: ffffffffffffffda RBX: 00005586bcb3ee20 RCX: 00007f2983249ad5
RDX: 0000000000000000 RSI: 0000000000000002 RDI: 00005586bcb53690
RBP: 00007ffdd694a4c0 R08: 0000000000000008 R09: 0000000000000000
R10: 00007ffdd694a4c0 R11: 0000000000000246 R12: 0000000000000000
R13: 00005586aca05610 R14: 00000000ffffffff R15: 0000000000000000
IPVS: rr: UDP 224.0.0.2:0 - no destination available