============================================
WARNING: possible recursive locking detected
6.9.0-next-20240523-syzkaller #0 Not tainted
--------------------------------------------
syz-executor.0/6267 is trying to acquire lock:
ffff888024a821d8 (&qs->lock){..-.}-{2:2}, at: __queue_map_get+0x14b/0x4d0 kernel/bpf/queue_stack_maps.c:105
but task is already holding lock:
ffff888024a821d8 (&qs->lock){..-.}-{2:2}, at: queue_stack_map_push_elem+0x1b2/0x660 kernel/bpf/queue_stack_maps.c:210
other info that might help us debug this:
Possible unsafe locking scenario:
CPU0
----
lock(&qs->lock);
lock(&qs->lock);
*** DEADLOCK ***
May be due to missing lock nesting notation
5 locks held by syz-executor.0/6267:
#0: ffff888078a99420 (&fp->aux->used_maps_mutex){+.+.}-{3:3}, at: bpf_check_tail_call kernel/bpf/core.c:2343 [inline]
#0: ffff888078a99420 (&fp->aux->used_maps_mutex){+.+.}-{3:3}, at: bpf_prog_select_runtime+0xb0/0xc90 kernel/bpf/core.c:2432
#1: ffffffff8e333ee0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:329 [inline]
#1: ffffffff8e333ee0 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:781 [inline]
#1: ffffffff8e333ee0 (rcu_read_lock){....}-{1:2}, at: ieee80211_iterate_active_interfaces_atomic+0x2a/0x170 net/mac80211/util.c:807
#2: ffffffff8e333ee0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:329 [inline]
#2: ffffffff8e333ee0 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:781 [inline]
#2: ffffffff8e333ee0 (rcu_read_lock){....}-{1:2}, at: __bpf_trace_run kernel/trace/bpf_trace.c:2402 [inline]
#2: ffffffff8e333ee0 (rcu_read_lock){....}-{1:2}, at: bpf_trace_run3+0x24c/0x5a0 kernel/trace/bpf_trace.c:2445
#3: ffff888024a821d8 (&qs->lock){..-.}-{2:2}, at: queue_stack_map_push_elem+0x1b2/0x660 kernel/bpf/queue_stack_maps.c:210
#4: ffffffff8e333ee0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:329 [inline]
#4: ffffffff8e333ee0 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:781 [inline]
#4: ffffffff8e333ee0 (rcu_read_lock){....}-{1:2}, at: __bpf_trace_run kernel/trace/bpf_trace.c:2402 [inline]
#4: ffffffff8e333ee0 (rcu_read_lock){....}-{1:2}, at: bpf_trace_run2+0x1fc/0x540 kernel/trace/bpf_trace.c:2444
stack backtrace:
CPU: 0 PID: 6267 Comm: syz-executor.0 Not tainted 6.9.0-next-20240523-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/02/2024
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0x241/0x360 lib/dump_stack.c:114
check_deadlock kernel/locking/lockdep.c:3062 [inline]
validate_chain+0x15d3/0x5900 kernel/locking/lockdep.c:3856
__lock_acquire+0x1346/0x1fd0 kernel/locking/lockdep.c:5137
lock_acquire+0x1ed/0x550 kernel/locking/lockdep.c:5754
__raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline]
_raw_spin_lock_irqsave+0xd5/0x120 kernel/locking/spinlock.c:162
__queue_map_get+0x14b/0x4d0 kernel/bpf/queue_stack_maps.c:105
bpf_prog_94b194d4ebfffdd5+0x45/0x49
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:2403 [inline]
bpf_trace_run2+0x2ec/0x540 kernel/trace/bpf_trace.c:2444
trace_contention_end+0x114/0x140 include/trace/events/lock.h:122
__pv_queued_spin_lock_slowpath+0xb81/0xdc0 kernel/locking/qspinlock.c:557
pv_queued_spin_lock_slowpath arch/x86/include/asm/paravirt.h:584 [inline]
queued_spin_lock_slowpath+0x42/0x50 arch/x86/include/asm/qspinlock.h:51
queued_spin_lock include/asm-generic/qspinlock.h:114 [inline]
do_raw_spin_lock+0x272/0x370 kernel/locking/spinlock_debug.c:116
__raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:111 [inline]
_raw_spin_lock_irqsave+0xe1/0x120 kernel/locking/spinlock.c:162
queue_stack_map_push_elem+0x1b2/0x660 kernel/bpf/queue_stack_maps.c:210
bpf_prog_216c997a1f42e404+0x3f/0x43
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:2403 [inline]
bpf_trace_run3+0x33a/0x5a0 kernel/trace/bpf_trace.c:2445
trace_kmem_cache_free include/trace/events/kmem.h:114 [inline]
kmem_cache_free+0x2a9/0x350 mm/slub.c:4510
skb_kfree_head net/core/skbuff.c:1067 [inline]
skb_free_head net/core/skbuff.c:1081 [inline]
skb_release_data+0x64d/0x880 net/core/skbuff.c:1108
skb_release_all net/core/skbuff.c:1173 [inline]
__kfree_skb net/core/skbuff.c:1187 [inline]
consume_skb+0xb1/0x160 net/core/skbuff.c:1409
mac80211_hwsim_beacon_tx+0x3bf/0x850 drivers/net/wireless/virtual/mac80211_hwsim.c:2306
__iterate_interfaces+0x223/0x4c0 net/mac80211/util.c:772
ieee80211_iterate_active_interfaces_atomic+0xd8/0x170 net/mac80211/util.c:808
mac80211_hwsim_beacon+0xd4/0x1f0 drivers/net/wireless/virtual/mac80211_hwsim.c:2336
__run_hrtimer kernel/time/hrtimer.c:1687 [inline]
__hrtimer_run_queues+0x59b/0xd50 kernel/time/hrtimer.c:1751
hrtimer_run_softirq+0x19a/0x2c0 kernel/time/hrtimer.c:1768
handle_softirqs+0x2c4/0x970 kernel/softirq.c:554
__do_softirq kernel/softirq.c:588 [inline]
invoke_softirq kernel/softirq.c:428 [inline]
__irq_exit_rcu+0xf4/0x1c0 kernel/softirq.c:637
irq_exit_rcu+0x9/0x30 kernel/softirq.c:649
instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1043 [inline]
sysvec_apic_timer_interrupt+0xa6/0xc0 arch/x86/kernel/apic/apic.c:1043
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:lock_acquire+0x264/0x550 kernel/locking/lockdep.c:5758
Code: 2b 00 74 08 4c 89 f7 e8 0a 95 89 00 f6 44 24 61 02 0f 85 85 01 00 00 41 f7 c7 00 02 00 00 74 01 fb 48 c7 44 24 40 0e 36 e0 45 <4b> c7 44 25 00 00 00 00 00 43 c7 44 25 09 00 00 00 00 43 c7 44 25
RSP: 0018:ffffc900094f7800 EFLAGS: 00000206
RAX: 0000000000000001 RBX: 1ffff9200129ef0c RCX: 0000000000000001
RDX: dffffc0000000000 RSI: ffffffff8bcacc20 RDI: ffffffff8c1fe6c0
RBP: ffffc900094f7948 R08: ffffffff92fb65a7 R09: 1ffffffff25f6cb4
R10: dffffc0000000000 R11: fffffbfff25f6cb5 R12: 1ffff9200129ef08
R13: dffffc0000000000 R14: ffffc900094f7860 R15: 0000000000000246
__mutex_lock_common kernel/locking/mutex.c:608 [inline]
__mutex_lock+0x136/0xd70 kernel/locking/mutex.c:752
bpf_check_tail_call kernel/bpf/core.c:2343 [inline]
bpf_prog_select_runtime+0xb0/0xc90 kernel/bpf/core.c:2432
bpf_prog_load+0x16c6/0x20f0 kernel/bpf/syscall.c:2912
__sys_bpf+0x4ee/0x810 kernel/bpf/syscall.c:5687
__do_sys_bpf kernel/bpf/syscall.c:5794 [inline]
__se_sys_bpf kernel/bpf/syscall.c:5792 [inline]
__x64_sys_bpf+0x7c/0x90 kernel/bpf/syscall.c:5792
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: 0033:0x7feb46e7cee9
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:00007feb47c970c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000141
RAX: ffffffffffffffda RBX: 00007feb46fabf80 RCX: 00007feb46e7cee9
RDX: 0000000000000090 RSI: 00000000200000c0 RDI: 0000000000000005
RBP: 00007feb46ec949e R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000000b R14: 00007feb46fabf80 R15: 00007fffc09754d8
----------------
Code disassembly (best guess):
0: 2b 00 sub (%rax),%eax
2: 74 08 je 0xc
4: 4c 89 f7 mov %r14,%rdi
7: e8 0a 95 89 00 call 0x899516
c: f6 44 24 61 02 testb $0x2,0x61(%rsp)
11: 0f 85 85 01 00 00 jne 0x19c
17: 41 f7 c7 00 02 00 00 test $0x200,%r15d
1e: 74 01 je 0x21
20: fb sti
21: 48 c7 44 24 40 0e 36 movq $0x45e0360e,0x40(%rsp)
28: e0 45
* 2a: 4b c7 44 25 00 00 00 movq $0x0,0x0(%r13,%r12,1) <-- trapping instruction
31: 00 00
33: 43 c7 44 25 09 00 00 movl $0x0,0x9(%r13,%r12,1)
3a: 00 00
3c: 43 rex.XB
3d: c7 .byte 0xc7
3e: 44 rex.R
3f: 25 .byte 0x25