__nla_validate_parse: 59 callbacks suppressed
netlink: 12 bytes leftover after parsing attributes in process `syz-executor.3'.
FAULT_INJECTION: forcing a failure.
name fail_usercopy, interval 1, probability 0, space 0, times 0
======================================================
WARNING: possible circular locking dependency detected
6.9.0-rc5-syzkaller-00031-g71b1543c83d6 #0 Not tainted
------------------------------------------------------
syz-executor.3/7175 is trying to acquire lock:
ffffffff8d79eb98 ((console_sem).lock){-...}-{2:2}, at: down_trylock+0x12/0x70 kernel/locking/semaphore.c:139
but task is already holding lock:
ffff8880b943ea58 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x29/0x130 kernel/sched/core.c:559
which lock already depends on the new lock.
the existing dependency chain (in reverse order) is:
-> #2 (&rq->__lock){-.-.}-{2:2}:
_raw_spin_lock_nested+0x31/0x40 kernel/locking/spinlock.c:378
raw_spin_rq_lock_nested+0x29/0x130 kernel/sched/core.c:559
raw_spin_rq_lock kernel/sched/sched.h:1387 [inline]
rq_lock kernel/sched/sched.h:1701 [inline]
task_fork_fair+0x70/0x240 kernel/sched/fair.c:12635
sched_cgroup_fork+0x3cf/0x510 kernel/sched/core.c:4845
copy_process+0x4106/0x9090 kernel/fork.c:2499
kernel_clone+0xfd/0x980 kernel/fork.c:2797
user_mode_thread+0xb4/0xf0 kernel/fork.c:2875
rest_init+0x23/0x2b0 init/main.c:704
start_kernel+0x3a3/0x490 init/main.c:1081
x86_64_start_reservations+0x18/0x30 arch/x86/kernel/head64.c:507
x86_64_start_kernel+0xb2/0xc0 arch/x86/kernel/head64.c:488
common_startup_64+0x13e/0x148
-> #1 (&p->pi_lock){-.-.}-{2:2}:
__raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline]
_raw_spin_lock_irqsave+0x3a/0x60 kernel/locking/spinlock.c:162
class_raw_spinlock_irqsave_constructor include/linux/spinlock.h:553 [inline]
try_to_wake_up+0x9a/0x13e0 kernel/sched/core.c:4262
up+0x79/0xb0 kernel/locking/semaphore.c:191
__up_console_sem kernel/printk/printk.c:340 [inline]
__console_unlock kernel/printk/printk.c:2731 [inline]
console_unlock+0x23e/0x290 kernel/printk/printk.c:3050
vprintk_emit kernel/printk/printk.c:2348 [inline]
vprintk_emit+0x11a/0x5a0 kernel/printk/printk.c:2303
dev_vprintk_emit drivers/base/core.c:4950 [inline]
dev_printk_emit+0xfb/0x140 drivers/base/core.c:4961
__dev_printk+0xf5/0x270 drivers/base/core.c:4973
_dev_warn+0xe5/0x120 drivers/base/core.c:5017
firmware_fallback_sysfs+0x72f/0xbd0 drivers/base/firmware_loader/fallback.c:233
_request_firmware+0xe95/0x1300 drivers/base/firmware_loader/main.c:914
request_firmware_work_func+0xeb/0x250 drivers/base/firmware_loader/main.c:1165
process_one_work+0x9a9/0x1ac0 kernel/workqueue.c:3254
process_scheduled_works kernel/workqueue.c:3335 [inline]
worker_thread+0x6c8/0xf70 kernel/workqueue.c:3416
kthread+0x2c1/0x3a0 kernel/kthread.c:388
ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
-> #0 ((console_sem).lock){-...}-{2:2}:
check_prev_add kernel/locking/lockdep.c:3134 [inline]
check_prevs_add kernel/locking/lockdep.c:3253 [inline]
validate_chain kernel/locking/lockdep.c:3869 [inline]
__lock_acquire+0x2478/0x3b30 kernel/locking/lockdep.c:5137
lock_acquire kernel/locking/lockdep.c:5754 [inline]
lock_acquire+0x1b1/0x560 kernel/locking/lockdep.c:5719
__raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline]
_raw_spin_lock_irqsave+0x3a/0x60 kernel/locking/spinlock.c:162
down_trylock+0x12/0x70 kernel/locking/semaphore.c:139
__down_trylock_console_sem+0x40/0x140 kernel/printk/printk.c:323
console_trylock kernel/printk/printk.c:2684 [inline]
console_trylock_spinning kernel/printk/printk.c:1958 [inline]
vprintk_emit kernel/printk/printk.c:2347 [inline]
vprintk_emit+0xe4/0x5a0 kernel/printk/printk.c:2303
vprintk+0x7f/0xa0 kernel/printk/printk_safe.c:45
_printk+0xc8/0x100 kernel/printk/printk.c:2373
fail_dump lib/fault-inject.c:45 [inline]
should_fail_ex+0x46c/0x5b0 lib/fault-inject.c:153
__copy_to_user_inatomic include/linux/uaccess.h:123 [inline]
copy_to_user_nofault+0x9f/0x1a0 mm/maccess.c:149
____bpf_probe_write_user kernel/trace/bpf_trace.c:349 [inline]
bpf_probe_write_user+0xaf/0xf0 kernel/trace/bpf_trace.c:327
___bpf_prog_run+0x3e51/0xabd0 kernel/bpf/core.c:1997
__bpf_prog_run32+0xc1/0x100 kernel/bpf/core.c:2236
bpf_dispatcher_nop_func include/linux/bpf.h:1234 [inline]
__bpf_prog_run include/linux/filter.h:657 [inline]
bpf_prog_run include/linux/filter.h:664 [inline]
__bpf_trace_run kernel/trace/bpf_trace.c:2381 [inline]
bpf_trace_run4+0x176/0x460 kernel/trace/bpf_trace.c:2422
__bpf_trace_sched_switch+0x13e/0x190 include/trace/events/sched.h:222
trace_sched_switch include/trace/events/sched.h:222 [inline]
__schedule+0x252c/0x5d00 kernel/sched/core.c:6743
preempt_schedule_common+0x44/0xc0 kernel/sched/core.c:6925
preempt_schedule_thunk+0x1a/0x30 arch/x86/entry/thunk_64.S:12
__raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:152 [inline]
_raw_spin_unlock_irqrestore+0x61/0x80 kernel/locking/spinlock.c:194
rcu_report_unblock_qs_rnp kernel/rcu/tree.c:1992 [inline]
rcu_preempt_deferred_qs_irqrestore+0x8a9/0xb80 kernel/rcu/tree_plugin.h:557
rcu_read_unlock_special kernel/rcu/tree_plugin.h:681 [inline]
__rcu_read_unlock+0x2b4/0x580 kernel/rcu/tree_plugin.h:426
rcu_read_unlock include/linux/rcupdate.h:813 [inline]
nfnetlink_rcv_msg+0x871/0x11e0 net/netfilter/nfnetlink.c:294
netlink_rcv_skb+0x16b/0x440 net/netlink/af_netlink.c:2559
nfnetlink_rcv+0x1b4/0x430 net/netfilter/nfnetlink.c:659
netlink_unicast_kernel net/netlink/af_netlink.c:1335 [inline]
netlink_unicast+0x542/0x820 net/netlink/af_netlink.c:1361
netlink_sendmsg+0x8b8/0xd70 net/netlink/af_netlink.c:1905
sock_sendmsg_nosec net/socket.c:730 [inline]
__sock_sendmsg net/socket.c:745 [inline]
____sys_sendmsg+0xab5/0xc90 net/socket.c:2584
___sys_sendmsg+0x135/0x1e0 net/socket.c:2638
__sys_sendmsg+0x117/0x1f0 net/socket.c:2667
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xcf/0x260 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
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 ***
3 locks held by syz-executor.3/7175:
#0: ffffffff8d7b0e20 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:329 [inline]
#0: ffffffff8d7b0e20 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:781 [inline]
#0: ffffffff8d7b0e20 (rcu_read_lock){....}-{1:2}, at: nfnetlink_rcv_msg+0x1e2/0x11e0 net/netfilter/nfnetlink.c:230
#1: ffff8880b943ea58 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x29/0x130 kernel/sched/core.c:559
#2: ffffffff8d7b0e20 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:329 [inline]
#2: ffffffff8d7b0e20 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:781 [inline]
#2: ffffffff8d7b0e20 (rcu_read_lock){....}-{1:2}, at: __bpf_trace_run kernel/trace/bpf_trace.c:2380 [inline]
#2: ffffffff8d7b0e20 (rcu_read_lock){....}-{1:2}, at: bpf_trace_run4+0x107/0x460 kernel/trace/bpf_trace.c:2422
stack backtrace:
CPU: 0 PID: 7175 Comm: syz-executor.3 Not tainted 6.9.0-rc5-syzkaller-00031-g71b1543c83d6 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0x116/0x1f0 lib/dump_stack.c:114
check_noncircular+0x31a/0x400 kernel/locking/lockdep.c:2187
check_prev_add kernel/locking/lockdep.c:3134 [inline]
check_prevs_add kernel/locking/lockdep.c:3253 [inline]
validate_chain kernel/locking/lockdep.c:3869 [inline]
__lock_acquire+0x2478/0x3b30 kernel/locking/lockdep.c:5137
lock_acquire kernel/locking/lockdep.c:5754 [inline]
lock_acquire+0x1b1/0x560 kernel/locking/lockdep.c:5719
__raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline]
_raw_spin_lock_irqsave+0x3a/0x60 kernel/locking/spinlock.c:162
down_trylock+0x12/0x70 kernel/locking/semaphore.c:139
__down_trylock_console_sem+0x40/0x140 kernel/printk/printk.c:323
console_trylock kernel/printk/printk.c:2684 [inline]
console_trylock_spinning kernel/printk/printk.c:1958 [inline]
vprintk_emit kernel/printk/printk.c:2347 [inline]
vprintk_emit+0xe4/0x5a0 kernel/printk/printk.c:2303
vprintk+0x7f/0xa0 kernel/printk/printk_safe.c:45
_printk+0xc8/0x100 kernel/printk/printk.c:2373
fail_dump lib/fault-inject.c:45 [inline]
should_fail_ex+0x46c/0x5b0 lib/fault-inject.c:153
__copy_to_user_inatomic include/linux/uaccess.h:123 [inline]
copy_to_user_nofault+0x9f/0x1a0 mm/maccess.c:149
____bpf_probe_write_user kernel/trace/bpf_trace.c:349 [inline]
bpf_probe_write_user+0xaf/0xf0 kernel/trace/bpf_trace.c:327
___bpf_prog_run+0x3e51/0xabd0 kernel/bpf/core.c:1997
__bpf_prog_run32+0xc1/0x100 kernel/bpf/core.c:2236
bpf_dispatcher_nop_func include/linux/bpf.h:1234 [inline]
__bpf_prog_run include/linux/filter.h:657 [inline]
bpf_prog_run include/linux/filter.h:664 [inline]
__bpf_trace_run kernel/trace/bpf_trace.c:2381 [inline]
bpf_trace_run4+0x176/0x460 kernel/trace/bpf_trace.c:2422
__bpf_trace_sched_switch+0x13e/0x190 include/trace/events/sched.h:222
trace_sched_switch include/trace/events/sched.h:222 [inline]
__schedule+0x252c/0x5d00 kernel/sched/core.c:6743
preempt_schedule_common+0x44/0xc0 kernel/sched/core.c:6925
preempt_schedule_thunk+0x1a/0x30 arch/x86/entry/thunk_64.S:12
__raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:152 [inline]
_raw_spin_unlock_irqrestore+0x61/0x80 kernel/locking/spinlock.c:194
rcu_report_unblock_qs_rnp kernel/rcu/tree.c:1992 [inline]
rcu_preempt_deferred_qs_irqrestore+0x8a9/0xb80 kernel/rcu/tree_plugin.h:557
rcu_read_unlock_special kernel/rcu/tree_plugin.h:681 [inline]
__rcu_read_unlock+0x2b4/0x580 kernel/rcu/tree_plugin.h:426
rcu_read_unlock include/linux/rcupdate.h:813 [inline]
nfnetlink_rcv_msg+0x871/0x11e0 net/netfilter/nfnetlink.c:294
netlink_rcv_skb+0x16b/0x440 net/netlink/af_netlink.c:2559
nfnetlink_rcv+0x1b4/0x430 net/netfilter/nfnetlink.c:659
netlink_unicast_kernel net/netlink/af_netlink.c:1335 [inline]
netlink_unicast+0x542/0x820 net/netlink/af_netlink.c:1361
netlink_sendmsg+0x8b8/0xd70 net/netlink/af_netlink.c:1905
sock_sendmsg_nosec net/socket.c:730 [inline]
__sock_sendmsg net/socket.c:745 [inline]
____sys_sendmsg+0xab5/0xc90 net/socket.c:2584
___sys_sendmsg+0x135/0x1e0 net/socket.c:2638
__sys_sendmsg+0x117/0x1f0 net/socket.c:2667
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xcf/0x260 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fb99507dea9
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 20 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 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:00007fb995e590c8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007fb9951abf80 RCX: 00007fb99507dea9
RDX: 0000000000000000 RSI: 0000000020000140 RDI: 0000000000000003
RBP: 00007fb995e59120 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001
R13: 000000000000000b R14: 00007fb9951abf80 R15: 00007fff9c18f088
CPU: 0 PID: 7175 Comm: syz-executor.3 Not tainted 6.9.0-rc5-syzkaller-00031-g71b1543c83d6 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0x116/0x1f0 lib/dump_stack.c:114
fail_dump lib/fault-inject.c:52 [inline]
should_fail_ex+0x497/0x5b0 lib/fault-inject.c:153
__copy_to_user_inatomic include/linux/uaccess.h:123 [inline]
copy_to_user_nofault+0x9f/0x1a0 mm/maccess.c:149
____bpf_probe_write_user kernel/trace/bpf_trace.c:349 [inline]
bpf_probe_write_user+0xaf/0xf0 kernel/trace/bpf_trace.c:327
___bpf_prog_run+0x3e51/0xabd0 kernel/bpf/core.c:1997
__bpf_prog_run32+0xc1/0x100 kernel/bpf/core.c:2236
bpf_dispatcher_nop_func include/linux/bpf.h:1234 [inline]
__bpf_prog_run include/linux/filter.h:657 [inline]
bpf_prog_run include/linux/filter.h:664 [inline]
__bpf_trace_run kernel/trace/bpf_trace.c:2381 [inline]
bpf_trace_run4+0x176/0x460 kernel/trace/bpf_trace.c:2422
__bpf_trace_sched_switch+0x13e/0x190 include/trace/events/sched.h:222
trace_sched_switch include/trace/events/sched.h:222 [inline]
__schedule+0x252c/0x5d00 kernel/sched/core.c:6743
preempt_schedule_common+0x44/0xc0 kernel/sched/core.c:6925
preempt_schedule_thunk+0x1a/0x30 arch/x86/entry/thunk_64.S:12
__raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:152 [inline]
_raw_spin_unlock_irqrestore+0x61/0x80 kernel/locking/spinlock.c:194
rcu_report_unblock_qs_rnp kernel/rcu/tree.c:1992 [inline]
rcu_preempt_deferred_qs_irqrestore+0x8a9/0xb80 kernel/rcu/tree_plugin.h:557
rcu_read_unlock_special kernel/rcu/tree_plugin.h:681 [inline]
__rcu_read_unlock+0x2b4/0x580 kernel/rcu/tree_plugin.h:426
rcu_read_unlock include/linux/rcupdate.h:813 [inline]
nfnetlink_rcv_msg+0x871/0x11e0 net/netfilter/nfnetlink.c:294
netlink_rcv_skb+0x16b/0x440 net/netlink/af_netlink.c:2559
nfnetlink_rcv+0x1b4/0x430 net/netfilter/nfnetlink.c:659
netlink_unicast_kernel net/netlink/af_netlink.c:1335 [inline]
netlink_unicast+0x542/0x820 net/netlink/af_netlink.c:1361
netlink_sendmsg+0x8b8/0xd70 net/netlink/af_netlink.c:1905
sock_sendmsg_nosec net/socket.c:730 [inline]
__sock_sendmsg net/socket.c:745 [inline]
____sys_sendmsg+0xab5/0xc90 net/socket.c:2584
___sys_sendmsg+0x135/0x1e0 net/socket.c:2638
__sys_sendmsg+0x117/0x1f0 net/socket.c:2667
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xcf/0x260 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fb99507dea9
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 20 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 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:00007fb995e590c8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007fb9951abf80 RCX: 00007fb99507dea9
RDX: 0000000000000000 RSI: 0000000020000140 RDI: 0000000000000003
RBP: 00007fb995e59120 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001
R13: 000000000000000b R14: 00007fb9951abf80 R15: 00007fff9c18f088