------------[ cut here ]------------
======================================================
WARNING: possible circular locking dependency detected
6.1.82-syzkaller #0 Not tainted
------------------------------------------------------
udevd/3639 is trying to acquire lock:
ffffffff8d006ad8
((console_sem).lock){-...}-{2:2}, at: down_trylock+0x1c/0xa0 kernel/locking/semaphore.c:139
but task is already holding lock:
ffff8880b983aa18 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x26/0x140 kernel/sched/core.c:537
which lock already depends on the new lock.
the existing dependency chain (in reverse order) is:
-> #2 (&rq->__lock){-.-.}-{2:2}:
lock_acquire+0x1f8/0x5a0 kernel/locking/lockdep.c:5662
_raw_spin_lock_nested+0x2d/0x40 kernel/locking/spinlock.c:378
raw_spin_rq_lock_nested+0x26/0x140 kernel/sched/core.c:537
raw_spin_rq_lock kernel/sched/sched.h:1354 [inline]
rq_lock kernel/sched/sched.h:1644 [inline]
task_fork_fair+0x5d/0x350 kernel/sched/fair.c:11863
sched_cgroup_fork+0x374/0x400 kernel/sched/core.c:4686
copy_process+0x2442/0x4060 kernel/fork.c:2384
kernel_clone+0x222/0x920 kernel/fork.c:2682
user_mode_thread+0x12e/0x190 kernel/fork.c:2758
rest_init+0x23/0x300 init/main.c:696
start_kernel+0x0/0x53f init/main.c:891
start_kernel+0x496/0x53f init/main.c:1138
secondary_startup_64_no_verify+0xcf/0xdb
-> #1 (&p->pi_lock){-.-.}-{2:2}:
lock_acquire+0x1f8/0x5a0 kernel/locking/lockdep.c:5662
__raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline]
_raw_spin_lock_irqsave+0xd1/0x120 kernel/locking/spinlock.c:162
try_to_wake_up+0xad/0x12e0 kernel/sched/core.c:4112
up+0x6e/0x90 kernel/locking/semaphore.c:191
__up_console_sem+0x11a/0x1e0 kernel/printk/printk.c:260
__console_unlock kernel/printk/printk.c:2662 [inline]
console_unlock+0x591/0x7c0 kernel/printk/printk.c:2873
vprintk_emit+0x523/0x740 kernel/printk/printk.c:2268
dev_vprintk_emit+0x2aa/0x323 drivers/base/core.c:4902
dev_printk_emit+0xd9/0x118 drivers/base/core.c:4913
_dev_warn+0x11e/0x165 drivers/base/core.c:4969
firmware_fallback_sysfs+0x674/0x940 drivers/base/firmware_loader/fallback.c:229
_request_firmware+0xc13/0x1200 drivers/base/firmware_loader/main.c:856
request_firmware_work_func+0x126/0x270 drivers/base/firmware_loader/main.c:1105
process_one_work+0x8a9/0x11d0 kernel/workqueue.c:2292
worker_thread+0xa47/0x1200 kernel/workqueue.c:2439
kthread+0x28d/0x320 kernel/kthread.c:376
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:307
-> #0 ((console_sem).lock){-...}-{2:2}:
check_prev_add kernel/locking/lockdep.c:3090 [inline]
check_prevs_add kernel/locking/lockdep.c:3209 [inline]
validate_chain+0x1661/0x5950 kernel/locking/lockdep.c:3825
__lock_acquire+0x125b/0x1f80 kernel/locking/lockdep.c:5049
lock_acquire+0x1f8/0x5a0 kernel/locking/lockdep.c:5662
__raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline]
_raw_spin_lock_irqsave+0xd1/0x120 kernel/locking/spinlock.c:162
down_trylock+0x1c/0xa0 kernel/locking/semaphore.c:139
__down_trylock_console_sem+0x105/0x250 kernel/printk/printk.c:243
console_trylock kernel/printk/printk.c:2615 [inline]
console_trylock_spinning kernel/printk/printk.c:1867 [inline]
vprintk_emit+0x1ee/0x740 kernel/printk/printk.c:2267
_printk+0xd1/0x111 kernel/printk/printk.c:2293
__report_bug lib/bug.c:195 [inline]
report_bug+0x342/0x500 lib/bug.c:219
handle_bug+0x3d/0x70 arch/x86/kernel/traps.c:324
exc_invalid_op+0x16/0x40 arch/x86/kernel/traps.c:345
asm_exc_invalid_op+0x16/0x20 arch/x86/include/asm/idtentry.h:568
__local_bh_enable_ip+0x1b3/0x1f0
__sock_map_delete net/core/sock_map.c:426 [inline]
sock_map_delete_elem+0xcb/0x130 net/core/sock_map.c:448
bpf_prog_2c29ac5cdc6b1842+0x3a/0x3e
bpf_dispatcher_nop_func include/linux/bpf.h:989 [inline]
__bpf_prog_run include/linux/filter.h:600 [inline]
bpf_prog_run include/linux/filter.h:607 [inline]
__bpf_trace_run kernel/trace/bpf_trace.c:2273 [inline]
bpf_trace_run4+0x253/0x470 kernel/trace/bpf_trace.c:2314
trace_sched_switch include/trace/events/sched.h:222 [inline]
__schedule+0x2116/0x4550 kernel/sched/core.c:6555
schedule+0xbf/0x180 kernel/sched/core.c:6634
schedule_hrtimeout_range_clock+0x369/0x480 kernel/time/hrtimer.c:2292
ep_poll fs/eventpoll.c:1884 [inline]
do_epoll_wait+0x1be9/0x1e60 fs/eventpoll.c:2262
__do_sys_epoll_wait fs/eventpoll.c:2274 [inline]
__se_sys_epoll_wait fs/eventpoll.c:2269 [inline]
__x64_sys_epoll_wait+0x253/0x2a0 fs/eventpoll.c:2269
do_syscall_x64 arch/x86/entry/common.c:51 [inline]
do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:81
entry_SYSCALL_64_after_hwframe+0x63/0xcd
other info that might help us debug this:
Chain exists of:
(console_sem).lock --> &p->pi_lock --> &rq->__lock
Possible unsafe locking scenario:
CPU0 CPU1
---- ----
lock(&rq->__lock);
lock(&p->pi_lock);
lock(&rq->__lock);
lock((console_sem).lock);
*** DEADLOCK ***
2 locks held by udevd/3639:
#0: ffff8880b983aa18 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x26/0x140 kernel/sched/core.c:537
#1: ffffffff8d12a940 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:319 [inline]
#1: ffffffff8d12a940 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:760 [inline]
#1: ffffffff8d12a940 (rcu_read_lock){....}-{1:2}, at: __bpf_trace_run kernel/trace/bpf_trace.c:2272 [inline]
#1: ffffffff8d12a940 (rcu_read_lock){....}-{1:2}, at: bpf_trace_run4+0x16a/0x470 kernel/trace/bpf_trace.c:2314
stack backtrace:
CPU: 0 PID: 3639 Comm: udevd Not tainted 6.1.82-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+0x1e3/0x2cb lib/dump_stack.c:106
check_noncircular+0x2fa/0x3b0 kernel/locking/lockdep.c:2170
check_prev_add kernel/locking/lockdep.c:3090 [inline]
check_prevs_add kernel/locking/lockdep.c:3209 [inline]
validate_chain+0x1661/0x5950 kernel/locking/lockdep.c:3825
__lock_acquire+0x125b/0x1f80 kernel/locking/lockdep.c:5049
lock_acquire+0x1f8/0x5a0 kernel/locking/lockdep.c:5662
__raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline]
_raw_spin_lock_irqsave+0xd1/0x120 kernel/locking/spinlock.c:162
down_trylock+0x1c/0xa0 kernel/locking/semaphore.c:139
__down_trylock_console_sem+0x105/0x250 kernel/printk/printk.c:243
console_trylock kernel/printk/printk.c:2615 [inline]
console_trylock_spinning kernel/printk/printk.c:1867 [inline]
vprintk_emit+0x1ee/0x740 kernel/printk/printk.c:2267
_printk+0xd1/0x111 kernel/printk/printk.c:2293
__report_bug lib/bug.c:195 [inline]
report_bug+0x342/0x500 lib/bug.c:219
handle_bug+0x3d/0x70 arch/x86/kernel/traps.c:324
exc_invalid_op+0x16/0x40 arch/x86/kernel/traps.c:345
asm_exc_invalid_op+0x16/0x20 arch/x86/include/asm/idtentry.h:568
RIP: 0010:__local_bh_enable_ip+0x1b3/0x1f0 kernel/softirq.c:376
Code: 04 25 28 00 00 00 48 3b 44 24 60 75 4a 48 8d 65 d8 5b 41 5c 41 5d 41 5e 41 5f 5d c3 0f 0b e9 d0 fe ff ff e8 3f 00 00 00 eb a2 <0f> 0b e9 02 ff ff ff 48 c7 c1 64 97 73 8e 80 e1 07 80 c1 03 38 c1
RSP: 0018:ffffc90004a8f6c0 EFLAGS: 00010046
RAX: 0000000000000000 RBX: 1ffff92000951edc RCX: 0000000000000000
RDX: 0000000000000000 RSI: 0000000000000201 RDI: ffffffff8897624b
RBP: ffffc90004a8f778 R08: dffffc0000000000 R09: ffffed100e932346
R10: 0000000000000000 R11: dffffc0000000001 R12: dffffc0000000000
R13: ffff888058f75e00 R14: ffffc90004a8f700 R15: 0000000000000201
__sock_map_delete net/core/sock_map.c:426 [inline]
sock_map_delete_elem+0xcb/0x130 net/core/sock_map.c:448
bpf_prog_2c29ac5cdc6b1842+0x3a/0x3e
bpf_dispatcher_nop_func include/linux/bpf.h:989 [inline]
__bpf_prog_run include/linux/filter.h:600 [inline]
bpf_prog_run include/linux/filter.h:607 [inline]
__bpf_trace_run kernel/trace/bpf_trace.c:2273 [inline]
bpf_trace_run4+0x253/0x470 kernel/trace/bpf_trace.c:2314
trace_sched_switch include/trace/events/sched.h:222 [inline]
__schedule+0x2116/0x4550 kernel/sched/core.c:6555
schedule+0xbf/0x180 kernel/sched/core.c:6634
schedule_hrtimeout_range_clock+0x369/0x480 kernel/time/hrtimer.c:2292
ep_poll fs/eventpoll.c:1884 [inline]
do_epoll_wait+0x1be9/0x1e60 fs/eventpoll.c:2262
__do_sys_epoll_wait fs/eventpoll.c:2274 [inline]
__se_sys_epoll_wait fs/eventpoll.c:2269 [inline]
__x64_sys_epoll_wait+0x253/0x2a0 fs/eventpoll.c:2269
do_syscall_x64 arch/x86/entry/common.c:51 [inline]
do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:81
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f686bd23457
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:00007fffc84c8678 EFLAGS: 00000246 ORIG_RAX: 00000000000000e8
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f686bd23457
RDX: 0000000000000004 RSI: 00007fffc84c86b8 RDI: 0000000000000004
RBP: 000055cbe1fcf2c0 R08: 0000000000000007 R09: 6d23f0856eba516e
R10: 00000000ffffffff R11: 0000000000000246 R12: 000055cbe1fdff70
R13: 00007fffc84c86b8 R14: 00000000ffffffff R15: 000055cbe1fce910
WARNING: CPU: 0 PID: 3639 at kernel/softirq.c:376 __local_bh_enable_ip+0x1b3/0x1f0
Modules linked in:
CPU: 0 PID: 3639 Comm: udevd Not tainted 6.1.82-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/29/2024
RIP: 0010:__local_bh_enable_ip+0x1b3/0x1f0 kernel/softirq.c:376
Code: 04 25 28 00 00 00 48 3b 44 24 60 75 4a 48 8d 65 d8 5b 41 5c 41 5d 41 5e 41 5f 5d c3 0f 0b e9 d0 fe ff ff e8 3f 00 00 00 eb a2 <0f> 0b e9 02 ff ff ff 48 c7 c1 64 97 73 8e 80 e1 07 80 c1 03 38 c1
RSP: 0018:ffffc90004a8f6c0 EFLAGS: 00010046
RAX: 0000000000000000 RBX: 1ffff92000951edc RCX: 0000000000000000
RDX: 0000000000000000 RSI: 0000000000000201 RDI: ffffffff8897624b
RBP: ffffc90004a8f778 R08: dffffc0000000000 R09: ffffed100e932346
R10: 0000000000000000 R11: dffffc0000000001 R12: dffffc0000000000
R13: ffff888058f75e00 R14: ffffc90004a8f700 R15: 0000000000000201
FS: 00007f686c19cc80(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fffc84c2678 CR3: 000000005e9a0000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000600
Call Trace:
__sock_map_delete net/core/sock_map.c:426 [inline]
sock_map_delete_elem+0xcb/0x130 net/core/sock_map.c:448
bpf_prog_2c29ac5cdc6b1842+0x3a/0x3e
bpf_dispatcher_nop_func include/linux/bpf.h:989 [inline]
__bpf_prog_run include/linux/filter.h:600 [inline]
bpf_prog_run include/linux/filter.h:607 [inline]
__bpf_trace_run kernel/trace/bpf_trace.c:2273 [inline]
bpf_trace_run4+0x253/0x470 kernel/trace/bpf_trace.c:2314
trace_sched_switch include/trace/events/sched.h:222 [inline]
__schedule+0x2116/0x4550 kernel/sched/core.c:6555
schedule+0xbf/0x180 kernel/sched/core.c:6634
schedule_hrtimeout_range_clock+0x369/0x480 kernel/time/hrtimer.c:2292
ep_poll fs/eventpoll.c:1884 [inline]
do_epoll_wait+0x1be9/0x1e60 fs/eventpoll.c:2262
__do_sys_epoll_wait fs/eventpoll.c:2274 [inline]
__se_sys_epoll_wait fs/eventpoll.c:2269 [inline]
__x64_sys_epoll_wait+0x253/0x2a0 fs/eventpoll.c:2269
do_syscall_x64 arch/x86/entry/common.c:51 [inline]
do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:81
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f686bd23457
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:00007fffc84c8678 EFLAGS: 00000246 ORIG_RAX: 00000000000000e8
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f686bd23457
RDX: 0000000000000004 RSI: 00007fffc84c86b8 RDI: 0000000000000004
RBP: 000055cbe1fcf2c0 R08: 0000000000000007 R09: 6d23f0856eba516e
R10: 00000000ffffffff R11: 0000000000000246 R12: 000055cbe1fdff70
R13: 00007fffc84c86b8 R14: 00000000ffffffff R15: 000055cbe1fce910