============================================
WARNING: possible recursive locking detected
6.12.0-syzkaller-10686-gbb18265c3aba #0 Not tainted
--------------------------------------------
syz.1.1949/12479 is trying to acquire lock:
ffff88805efeaf30 (&hsr->seqnr_lock){+.-.}-{3:3}, at: spin_lock_bh include/linux/spinlock.h:356 [inline]
ffff88805efeaf30 (&hsr->seqnr_lock){+.-.}-{3:3}, at: hsr_dev_xmit+0x18a/0x210 net/hsr/hsr_device.c:234
but task is already holding lock:
ffff88805f672f30 (&hsr->seqnr_lock){+.-.}-{3:3}, at: spin_lock_bh include/linux/spinlock.h:356 [inline]
ffff88805f672f30 (&hsr->seqnr_lock){+.-.}-{3:3}, at: hsr_dev_xmit+0x18a/0x210 net/hsr/hsr_device.c:234
other info that might help us debug this:
Possible unsafe locking scenario:
CPU0
----
lock(&hsr->seqnr_lock);
lock(&hsr->seqnr_lock);
*** DEADLOCK ***
May be due to missing lock nesting notation
10 locks held by syz.1.1949/12479:
#0: ffffffff9a80a3b8 (nfnl_subsys_ipset){+.+.}-{4:4}
, at: nfnl_lock net/netfilter/nfnetlink.c:98 [inline]
, at: nfnetlink_rcv_msg+0xa5c/0x1180 net/netfilter/nfnetlink.c:295
#1: ffffc90000007c00
((&ndev->rs_timer)
){+.-.}-{0:0}
, at: call_timer_fn+0xc0/0x650 kernel/time/timer.c:1790
#2:
ffffffff8e93c560
(rcu_read_lock
){....}-{1:3}
, at: rcu_lock_acquire include/linux/rcupdate.h:337 [inline]
, at: rcu_read_lock include/linux/rcupdate.h:849 [inline]
, at: ip6_nd_hdr net/ipv6/ndisc.c:454 [inline]
, at: ndisc_send_skb+0x563/0x1450 net/ipv6/ndisc.c:505
#3:
ffffffff8e93c560
(rcu_read_lock
){....}-{1:3}
, at: rcu_lock_acquire include/linux/rcupdate.h:337 [inline]
, at: rcu_read_lock include/linux/rcupdate.h:849 [inline]
, at: ip6_finish_output2+0x63a/0x17b0 net/ipv6/ip6_output.c:126
#4: ffffffff8e93c5c0
(rcu_read_lock_bh
){....}-{1:3}
, at: local_bh_disable include/linux/bottom_half.h:20 [inline]
, at: rcu_read_lock_bh include/linux/rcupdate.h:901 [inline]
, at: __dev_queue_xmit+0x2f4/0x3f50 net/core/dev.c:4359
#5: ffff88805f672f30
(&hsr->seqnr_lock
){+.-.}-{3:3}
, at: spin_lock_bh include/linux/spinlock.h:356 [inline]
, at: hsr_dev_xmit+0x18a/0x210 net/hsr/hsr_device.c:234
#6: ffffffff8e93c560
(rcu_read_lock
){....}-{1:3}
, at: rcu_lock_acquire include/linux/rcupdate.h:337 [inline]
, at: rcu_read_lock include/linux/rcupdate.h:849 [inline]
, at: hsr_forward_skb+0xb6/0x2ac0 net/hsr/hsr_forward.c:723
#7: ffffffff8e93c5c0
(rcu_read_lock_bh
){....}-{1:3}
, at: local_bh_disable include/linux/bottom_half.h:20 [inline]
, at: rcu_read_lock_bh include/linux/rcupdate.h:901 [inline]
, at: __dev_queue_xmit+0x2f4/0x3f50 net/core/dev.c:4359
#8: ffffffff8e93c560
(rcu_read_lock
){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:337 [inline]
){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:849 [inline]
){....}-{1:3}, at: br_dev_xmit+0x21d/0x1b40 net/bridge/br_device.c:50
#9: ffffffff8e93c5c0
(rcu_read_lock_bh
){....}-{1:3}
, at: local_bh_disable include/linux/bottom_half.h:20 [inline]
, at: rcu_read_lock_bh include/linux/rcupdate.h:901 [inline]
, at: __dev_queue_xmit+0x2f4/0x3f50 net/core/dev.c:4359
stack backtrace:
CPU: 0 UID: 0 PID: 12479 Comm: syz.1.1949 Not tainted 6.12.0-syzkaller-10686-gbb18265c3aba #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
Call Trace:
__dump_stack lib/dump_stack.c:94 [inline]
dump_stack_lvl+0x241/0x360 lib/dump_stack.c:120
print_deadlock_bug+0x483/0x620 kernel/locking/lockdep.c:3037
check_deadlock kernel/locking/lockdep.c:3089 [inline]
validate_chain+0x15e2/0x5920 kernel/locking/lockdep.c:3891
__lock_acquire+0x1397/0x2100 kernel/locking/lockdep.c:5226
lock_acquire+0x1ed/0x550 kernel/locking/lockdep.c:5849
__raw_spin_lock_bh include/linux/spinlock_api_smp.h:126 [inline]
_raw_spin_lock_bh+0x35/0x50 kernel/locking/spinlock.c:178
spin_lock_bh include/linux/spinlock.h:356 [inline]
hsr_dev_xmit+0x18a/0x210 net/hsr/hsr_device.c:234
__netdev_start_xmit include/linux/netdevice.h:5002 [inline]
netdev_start_xmit include/linux/netdevice.h:5011 [inline]
xmit_one net/core/dev.c:3590 [inline]
dev_hard_start_xmit+0x27a/0x7e0 net/core/dev.c:3606
__dev_queue_xmit+0x1b73/0x3f50 net/core/dev.c:4434
dev_queue_xmit include/linux/netdevice.h:3168 [inline]
br_dev_queue_push_xmit+0x726/0x900 net/bridge/br_forward.c:53
NF_HOOK+0x3a7/0x460 include/linux/netfilter.h:314
br_forward_finish+0xd8/0x130 net/bridge/br_forward.c:66
NF_HOOK+0x3a7/0x460 include/linux/netfilter.h:314
__br_forward+0x489/0x660 net/bridge/br_forward.c:115
deliver_clone net/bridge/br_forward.c:131 [inline]
maybe_deliver+0xb3/0x150 net/bridge/br_forward.c:190
br_flood+0x2e4/0x660 net/bridge/br_forward.c:236
br_dev_xmit+0x1202/0x1b40
__netdev_start_xmit include/linux/netdevice.h:5002 [inline]
netdev_start_xmit include/linux/netdevice.h:5011 [inline]
xmit_one net/core/dev.c:3590 [inline]
dev_hard_start_xmit+0x27a/0x7e0 net/core/dev.c:3606
__dev_queue_xmit+0x1b73/0x3f50 net/core/dev.c:4434
dev_queue_xmit include/linux/netdevice.h:3168 [inline]
hsr_xmit net/hsr/hsr_forward.c:430 [inline]
hsr_forward_do net/hsr/hsr_forward.c:571 [inline]
hsr_forward_skb+0x171c/0x2ac0 net/hsr/hsr_forward.c:728
hsr_dev_xmit+0x195/0x210 net/hsr/hsr_device.c:235
__netdev_start_xmit include/linux/netdevice.h:5002 [inline]
netdev_start_xmit include/linux/netdevice.h:5011 [inline]
xmit_one net/core/dev.c:3590 [inline]
dev_hard_start_xmit+0x27a/0x7e0 net/core/dev.c:3606
__dev_queue_xmit+0x1b73/0x3f50 net/core/dev.c:4434
neigh_output include/net/neighbour.h:539 [inline]
ip6_finish_output2+0x12c7/0x17b0 net/ipv6/ip6_output.c:141
ip6_finish_output+0x41e/0x840 net/ipv6/ip6_output.c:226
NF_HOOK include/linux/netfilter.h:314 [inline]
ndisc_send_skb+0xb30/0x1450 net/ipv6/ndisc.c:511
addrconf_rs_timer+0x371/0x670 net/ipv6/addrconf.c:4061
call_timer_fn+0x18e/0x650 kernel/time/timer.c:1793
expire_timers kernel/time/timer.c:1844 [inline]
__run_timers kernel/time/timer.c:2418 [inline]
__run_timer_base+0x66a/0x8e0 kernel/time/timer.c:2430
run_timer_base kernel/time/timer.c:2439 [inline]
run_timer_softirq+0xb7/0x170 kernel/time/timer.c:2449
handle_softirqs+0x2c5/0x980 kernel/softirq.c:554
__do_softirq kernel/softirq.c:588 [inline]
invoke_softirq kernel/softirq.c:428 [inline]
__irq_exit_rcu+0xf7/0x220 kernel/softirq.c:655
irq_exit_rcu+0x9/0x30 kernel/softirq.c:671
instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1049 [inline]
sysvec_apic_timer_interrupt+0xa6/0xc0 arch/x86/kernel/apic/apic.c:1049
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:hash_net6_ahash_destroy+0xe4/0x410 net/netfilter/ipset/ip_set_hash_gen.h:435
Code: 87 e7 02 00 00 e8 cc 75 7d f7 44 89 eb 89 e9 d3 eb 31 ff 89 de e8 fc 79 7d f7 85 db 0f 85 e7 02 00 00 44 89 e8 49 8d 6c c6 18 <48> 89 e8 48 c1 e8 03 48 b9 00 00 00 00 00 fc ff df 80 3c 08 00 74
RSP: 0018:ffffc90003666c00 EFLAGS: 00000246
RAX: 000000000037908f RBX: 0000000000000000 RCX: 0000000000000016
RDX: ffff888025ef0000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc9002abc8490 R08: ffffffff8a186ec4 R09: 0000000000000000
R10: ffffc90003666b20 R11: ffffffff8a182aa0 R12: ffffc90029000008
R13: 000000000037908f R14: ffffc90029000000 R15: 0000000000000001
hash_net6_destroy+0x81/0x240 net/netfilter/ipset/ip_set_hash_gen.h:455
ip_set_create+0x14af/0x1900 net/netfilter/ipset/ip_set_core.c:1159
nfnetlink_rcv_msg+0xbec/0x1180 net/netfilter/nfnetlink.c:302
netlink_rcv_skb+0x1e3/0x430 net/netlink/af_netlink.c:2542
nfnetlink_rcv+0x297/0x2ab0 net/netfilter/nfnetlink.c:667
netlink_unicast_kernel net/netlink/af_netlink.c:1321 [inline]
netlink_unicast+0x7f6/0x990 net/netlink/af_netlink.c:1347
netlink_sendmsg+0x8e4/0xcb0 net/netlink/af_netlink.c:1891
sock_sendmsg_nosec net/socket.c:711 [inline]
__sock_sendmsg+0x221/0x270 net/socket.c:726
____sys_sendmsg+0x52a/0x7e0 net/socket.c:2583
___sys_sendmsg net/socket.c:2637 [inline]
__sys_sendmsg+0x269/0x350 net/socket.c:2669
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: 0033:0x7f98c3d7ff19
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 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 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f98c4bca058 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007f98c3f45fa0 RCX: 00007f98c3d7ff19
RDX: 0000000000000084 RSI: 0000000020000040 RDI: 0000000000000008
RBP: 00007f98c3df3986 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f98c3f45fa0 R15: 00007fff5aa55c88
----------------
Code disassembly (best guess):
0: 87 e7 xchg %esp,%edi
2: 02 00 add (%rax),%al
4: 00 e8 add %ch,%al
6: cc int3
7: 75 7d jne 0x86
9: f7 44 89 eb 89 e9 d3 testl $0xebd3e989,-0x15(%rcx,%rcx,4)
10: eb
11: 31 ff xor %edi,%edi
13: 89 de mov %ebx,%esi
15: e8 fc 79 7d f7 call 0xf77d7a16
1a: 85 db test %ebx,%ebx
1c: 0f 85 e7 02 00 00 jne 0x309
22: 44 89 e8 mov %r13d,%eax
25: 49 8d 6c c6 18 lea 0x18(%r14,%rax,8),%rbp
* 2a: 48 89 e8 mov %rbp,%rax <-- trapping instruction
2d: 48 c1 e8 03 shr $0x3,%rax
31: 48 b9 00 00 00 00 00 movabs $0xdffffc0000000000,%rcx
38: fc ff df
3b: 80 3c 08 00 cmpb $0x0,(%rax,%rcx,1)
3f: 74 .byte 0x74