syzbot


possible deadlock in br_multicast_rcv

Status: upstream: reported C repro on 2023/01/21 00:08
Reported-by: syzbot+3ec406e9cfcfcbd11d54@syzkaller.appspotmail.com
First crash: 518d, last: 488d
Similar bugs (5)
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
linux-6.1 possible deadlock in br_multicast_rcv 1 332d 332d 0/3 auto-obsoleted due to no activity on 2023/11/03 02:43
linux-4.19 possible deadlock in br_multicast_rcv C error 1 515d 515d 0/1 upstream: reported C repro on 2023/01/24 01:03
upstream possible deadlock in br_multicast_rcv (3) bridge C done error 53 57d 523d 0/27 upstream: reported C repro on 2023/01/16 16:40
upstream possible deadlock in br_multicast_rcv (2) bridge 11 887d 1016d 0/27 auto-closed as invalid on 2022/05/17 09:29
upstream possible deadlock in br_multicast_rcv bridge 2 1124d 1125d 0/27 auto-closed as invalid on 2021/09/03 11:13
Fix bisection attempts (1)
Created Duration User Patch Repo Result
2023/02/20 00:07 24m bisect fix linux-4.14.y job log (0) log

Sample crash report:
device vlan8 entered promiscuous mode
device bridge10 entered promiscuous mode
bridge9: port 1(vlan0) entered blocking state
bridge9: port 1(vlan0) entered forwarding state
============================================
WARNING: possible recursive locking detected
4.14.303-syzkaller #0 Not tainted
--------------------------------------------
syz-executor172/8127 is trying to acquire lock:
 (&(&br->multicast_lock)->rlock){+.-.}, at: [<ffffffff86546a87>] spin_lock include/linux/spinlock.h:317 [inline]
 (&(&br->multicast_lock)->rlock){+.-.}, at: [<ffffffff86546a87>] br_ip4_multicast_query net/bridge/br_multicast.c:1419 [inline]
 (&(&br->multicast_lock)->rlock){+.-.}, at: [<ffffffff86546a87>] br_multicast_ipv4_rcv net/bridge/br_multicast.c:1810 [inline]
 (&(&br->multicast_lock)->rlock){+.-.}, at: [<ffffffff86546a87>] br_multicast_rcv+0x14c7/0x3720 net/bridge/br_multicast.c:1893

but task is already holding lock:
 (&(&br->multicast_lock)->rlock){+.-.}, at: [<ffffffff86543fa0>] spin_lock include/linux/spinlock.h:317 [inline]
 (&(&br->multicast_lock)->rlock){+.-.}, at: [<ffffffff86543fa0>] br_multicast_port_query_expired+0x40/0x160 net/bridge/br_multicast.c:976

other info that might help us debug this:
 Possible unsafe locking scenario:

       CPU0
       ----
  lock(&(&br->multicast_lock)->rlock);
  lock(&(&br->multicast_lock)->rlock);

 *** DEADLOCK ***

 May be due to missing lock nesting notation

5 locks held by syz-executor172/8127:
 #0:  (((&port->ip4_own_query.timer))){+.-.}, at: [<ffffffff814871c8>] lockdep_copy_map include/linux/lockdep.h:174 [inline]
 #0:  (((&port->ip4_own_query.timer))){+.-.}, at: [<ffffffff814871c8>] call_timer_fn+0xb8/0x650 kernel/time/timer.c:1270
 #1:  (&(&br->multicast_lock)->rlock){+.-.}, at: [<ffffffff86543fa0>] spin_lock include/linux/spinlock.h:317 [inline]
 #1:  (&(&br->multicast_lock)->rlock){+.-.}, at: [<ffffffff86543fa0>] br_multicast_port_query_expired+0x40/0x160 net/bridge/br_multicast.c:976
 #2:  (rcu_read_lock_bh){....}, at: [<ffffffff85c4d1ac>] __dev_queue_xmit+0x1ac/0x2480 net/core/dev.c:3455
 #3:  (rcu_read_lock_bh){....}, at: [<ffffffff85c4d1ac>] __dev_queue_xmit+0x1ac/0x2480 net/core/dev.c:3455
 #4:  (rcu_read_lock){....}, at: [<ffffffff8650e4c9>] br_dev_xmit+0xa9/0xd40 net/bridge/br_device.c:39

stack backtrace:
CPU: 1 PID: 8127 Comm: syz-executor172 Not tainted 4.14.303-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/12/2023
Call Trace:
 <IRQ>
 __dump_stack lib/dump_stack.c:17 [inline]
 dump_stack+0x1b2/0x281 lib/dump_stack.c:58
 print_deadlock_bug kernel/locking/lockdep.c:1800 [inline]
 check_deadlock kernel/locking/lockdep.c:1847 [inline]
 validate_chain kernel/locking/lockdep.c:2448 [inline]
 __lock_acquire.cold+0x180/0x97c kernel/locking/lockdep.c:3491
 lock_acquire+0x170/0x3f0 kernel/locking/lockdep.c:3998
 __raw_spin_lock include/linux/spinlock_api_smp.h:142 [inline]
 _raw_spin_lock+0x2a/0x40 kernel/locking/spinlock.c:152
 spin_lock include/linux/spinlock.h:317 [inline]
 br_ip4_multicast_query net/bridge/br_multicast.c:1419 [inline]
 br_multicast_ipv4_rcv net/bridge/br_multicast.c:1810 [inline]
 br_multicast_rcv+0x14c7/0x3720 net/bridge/br_multicast.c:1893
 br_dev_xmit+0x4b4/0xd40 net/bridge/br_device.c:73
 __netdev_start_xmit include/linux/netdevice.h:4054 [inline]
 netdev_start_xmit include/linux/netdevice.h:4063 [inline]
 xmit_one net/core/dev.c:3005 [inline]
 dev_hard_start_xmit+0x188/0x890 net/core/dev.c:3021
 __dev_queue_xmit+0x1d7f/0x2480 net/core/dev.c:3521
 vlan_dev_hard_start_xmit+0x35d/0x7a0 net/8021q/vlan_dev.c:131
 __netdev_start_xmit include/linux/netdevice.h:4054 [inline]
 netdev_start_xmit include/linux/netdevice.h:4063 [inline]
 xmit_one net/core/dev.c:3005 [inline]
 dev_hard_start_xmit+0x188/0x890 net/core/dev.c:3021
 __dev_queue_xmit+0x1d7f/0x2480 net/core/dev.c:3521
 br_dev_queue_push_xmit+0x1cc/0x5e0 net/bridge/br_forward.c:55
 NF_HOOK include/linux/netfilter.h:250 [inline]
 __br_multicast_send_query+0x1a96/0x2db0 net/bridge/br_multicast.c:922
 br_multicast_send_query+0x1c6/0x340 net/bridge/br_multicast.c:961
 br_multicast_port_query_expired+0x105/0x160 net/bridge/br_multicast.c:984
 call_timer_fn+0x14a/0x650 kernel/time/timer.c:1280
 expire_timers+0x232/0x4d0 kernel/time/timer.c:1319
 __run_timers kernel/time/timer.c:1637 [inline]
 run_timer_softirq+0x1d5/0x5a0 kernel/time/timer.c:1650
 __do_softirq+0x24d/0x9ff kernel/softirq.c:288
 invoke_softirq kernel/softirq.c:368 [inline]
 irq_exit+0x193/0x240 kernel/softirq.c:409
 exiting_irq arch/x86/include/asm/apic.h:638 [inline]
 smp_apic_timer_interrupt+0x141/0x5e0 arch/x86/kernel/apic/apic.c:1106
 apic_timer_interrupt+0x93/0xa0 arch/x86/entry/entry_64.S:796
 </IRQ>
RIP: 0010:on_stack arch/x86/include/asm/stacktrace.h:45 [inline]
RIP: 0010:stack_access_ok arch/x86/kernel/unwind_orc.c:276 [inline]
RIP: 0010:deref_stack_reg+0xc2/0x1a0 arch/x86/kernel/unwind_orc.c:286
RSP: 0018:ffff8880b374f608 EFLAGS: 00000297 ORIG_RAX: ffffffffffffff10
RAX: ffff8880b3750000 RBX: 1ffff110166e9ec2 RCX: ffffffff8ac82432
RDX: 1ffff110166e9eea RSI: ffff8880b374fed8 RDI: ffff8880b374f750
RBP: ffff8880b374fed8 R08: ffffffff8ac82436 R09: ffffffff8ac82437
R10: 0000000000102daf R11: 0000000000000001 R12: ffff8880b374f740
R13: ffff8880b374f788 R14: ffff8880b3748000 R15: ffff8880b374f740
 unwind_next_frame+0xc98/0x17d0 arch/x86/kernel/unwind_orc.c:425
 __save_stack_trace+0x90/0x160 arch/x86/kernel/stacktrace.c:44
 save_stack mm/kasan/kasan.c:447 [inline]
 set_track mm/kasan/kasan.c:459 [inline]
 kasan_kmalloc+0xeb/0x160 mm/kasan/kasan.c:551
 kmem_cache_alloc_node_trace+0x153/0x400 mm/slab.c:3661
 __do_kmalloc_node mm/slab.c:3681 [inline]
 __kmalloc_node_track_caller+0x38/0x70 mm/slab.c:3696
 __kmalloc_reserve net/core/skbuff.c:137 [inline]
 __alloc_skb+0x96/0x510 net/core/skbuff.c:205
 alloc_skb include/linux/skbuff.h:980 [inline]
 netlink_alloc_large_skb net/netlink/af_netlink.c:1168 [inline]
 netlink_sendmsg+0x91e/0xbc0 net/netlink/af_netlink.c:1868
 sock_sendmsg_nosec net/socket.c:646 [inline]
 sock_sendmsg+0xb5/0x100 net/socket.c:656
 ___sys_sendmsg+0x6c8/0x800 net/socket.c:2062
 __sys_sendmsg+0xa3/0x120 net/socket.c:2096
 SYSC_sendmsg net/socket.c:2107 [inline]
 SyS_sendmsg+0x27/0x40 net/socket.c:2103
 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292
 entry_SYSCALL_64_after_hwframe+0x5e/0xd3
RIP: 0033:0x7f18b1370799
RSP: 002b:00007fff25d0d268 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f18b1370799
RDX: 0000000000000000 RSI: 0000000020000000 RDI: 0000000000000007
RBP: 0000000000000000 R08: 00000000b13dde40 R09: 00000000b13dde40
R10: 00000000b13dde40 R11: 0000000000000246 R12: 000000000000879f
R13: 00007fff25d0d290 R14: 00007fff25d0d280 R15: 00007fff25d0d274
syz-executor172 (8127) used greatest stack depth: 25168 bytes left
device bridge12 entered promiscuous mode
bridge11: port 1(vlan1) entered blocking state
bridge11: port 1(vlan1) entered forwarding state
device bridge14 entered promiscuous mode
bridge13: port 1(vlan2) entered blocking state
bridge13: port 1(vlan2) entered forwarding state
device bridge16 entered promiscuous mode
bridge15: port 1(vlan3) entered blocking state
bridge15: port 1(vlan3) entered forwarding state
device bridge18 entered promiscuous mode
bridge17: port 1(vlan4) entered blocking state
bridge17: port 1(vlan4) entered forwarding state
device bridge20 entered promiscuous mode
bridge19: port 1(vlan5) entered blocking state
bridge19: port 1(vlan5) entered forwarding state
device bridge22 entered promiscuous mode
bridge21: port 1(vlan6) entered blocking state
bridge21: port 1(vlan6) entered forwarding state
device bridge24 entered promiscuous mode
bridge23: port 1(vlan7) entered blocking state
bridge23: port 1(vlan7) entered forwarding state
device bridge26 entered promiscuous mode
bridge25: port 1(vlan8) entered blocking state
bridge25: port 1(vlan8) entered forwarding state
bridge36: port 1(vlan9) entered blocking state
bridge36: port 1(vlan9) entered disabled state
device vlan9 entered promiscuous mode
bridge38: port 1(vlan10) entered blocking state
bridge38: port 1(vlan10) entered disabled state
device vlan10 entered promiscuous mode
bridge40: port 1(vlan11) entered blocking state
bridge40: port 1(vlan11) entered disabled state
device vlan11 entered promiscuous mode
bridge42: port 1(vlan12) entered blocking state
bridge42: port 1(vlan12) entered disabled state
device vlan12 entered promiscuous mode
bridge44: port 1(vlan13) entered blocking state
bridge44: port 1(vlan13) entered disabled state
device vlan13 entered promiscuous mode
bridge46: port 1(vlan14) entered blocking state
bridge46: port 1(vlan14) entered disabled state
device vlan14 entered promiscuous mode
bridge48: port 1(vlan15) entered blocking state
bridge48: port 1(vlan15) entered disabled state
device vlan15 entered promiscuous mode
bridge50: port 1(vlan16) entered blocking state
bridge50: port 1(vlan16) entered disabled state
device vlan16 entered promiscuous mode
bridge52: port 1(vlan17) entered blocking state
bridge52: port 1(vlan17) entered disabled state
device vlan17 entered promiscuous mode
device bridge37 entered promiscuous mode
bridge36: port 1(vlan9) entered blocking state
bridge36: port 1(vlan9) entered forwarding state
syz-executor172 (8257) used greatest stack depth: 24840 bytes left
device bridge39 entered promiscuous mode
bridge38: port 1(vlan10) entered blocking state
bridge38: port 1(vlan10) entered forwarding state
device bridge41 entered promiscuous mode
bridge40: port 1(vlan11) entered blocking state
bridge40: port 1(vlan11) entered forwarding state
device bridge43 entered promiscuous mode
bridge42: port 1(vlan12) entered blocking state
bridge42: port 1(vlan12) entered forwarding state
device bridge45 entered promiscuous mode
bridge44: port 1(vlan13) entered blocking state
bridge44: port 1(vlan13) entered forwarding state
device bridge47 entered promiscuous mode
bridge46: port 1(vlan14) entered blocking state
bridge46: port 1(vlan14) entered forwarding state
device bridge49 entered promiscuous mode
bridge48: port 1(vlan15) entered blocking state
bridge48: port 1(vlan15) entered forwarding state
device bridge51 entered promiscuous mode
bridge50: port 1(vlan16) entered blocking state
bridge50: port 1(vlan16) entered forwarding state
device bridge53 entered promiscuous mode
bridge52: port 1(vlan17) entered blocking state
bridge52: port 1(vlan17) entered forwarding state
bridge63: port 1(vlan18) entered blocking state
bridge63: port 1(vlan18) entered disabled state
device vlan18 entered promiscuous mode
bridge65: port 1(vlan19) entered blocking state
bridge65: port 1(vlan19) entered disabled state
device vlan19 entered promiscuous mode
bridge67: port 1(vlan20) entered blocking state
bridge67: port 1(vlan20) entered disabled state
device vlan20 entered promiscuous mode
bridge69: port 1(vlan21) entered blocking state
bridge69: port 1(vlan21) entered disabled state
device vlan21 entered promiscuous mode
bridge71: port 1(vlan22) entered blocking state
bridge71: port 1(vlan22) entered disabled state
device vlan22 entered promiscuous mode
bridge73: port 1(vlan23) entered blocking state
bridge73: port 1(vlan23) entered disabled state
device vlan23 entered promiscuous mode
bridge75: port 1(vlan24) entered blocking state
bridge75: port 1(vlan24) entered disabled state
device vlan24 entered promiscuous mode
bridge77: port 1(vlan25) entered blocking state
bridge77: port 1(vlan25) entered disabled state
device vlan25 entered promiscuous mode
bridge79: port 1(vlan26) entered blocking state
bridge79: port 1(vlan26) entered disabled state
device vlan26 entered promiscuous mode
device bridge64 entered promiscuous mode
bridge63: port 1(vlan18) entered blocking state
bridge63: port 1(vlan18) entered forwarding state
device bridge66 entered promiscuous mode
bridge65: port 1(vlan19) entered blocking state
bridge65: port 1(vlan19) entered forwarding state
device bridge68 entered promiscuous mode
bridge67: port 1(vlan20) entered blocking state
bridge67: port 1(vlan20) entered forwarding state
device bridge70 entered promiscuous mode
bridge69: port 1(vlan21) entered blocking state
bridge69: port 1(vlan21) entered forwarding state
device bridge72 entered promiscuous mode
bridge71: port 1(vlan22) entered blocking state
bridge71: port 1(vlan22) entered forwarding state
device bridge74 entered promiscuous mode
bridge73: port 1(vlan23) entered blocking state
bridge73: port 1(vlan23) entered forwarding state
device bridge76 entered promiscuous mode
bridge75: port 1(vlan24) entered blocking state
bridge75: port 1(vlan24) entered forwarding state
device bridge78 entered promiscuous mode
bridge77: port 1(vlan25) entered blocking state
bridge77: port 1(vlan25) entered forwarding state
device bridge80 entered promiscuous mode
bridge79: port 1(vlan26) entered blocking state
bridge79: port 1(vlan26) entered forwarding state
bridge90: port 1(vlan27) entered blocking state
bridge90: port 1(vlan27) entered disabled state
device vlan27 entered promiscuous mode
bridge92: port 1(vlan28) entered blocking state
bridge92: port 1(vlan28) entered disabled state
device vlan28 entered promiscuous mode
bridge94: port 1(vlan29) entered blocking state
bridge94: port 1(vlan29) entered disabled state
device vlan29 entered promiscuous mode
bridge96: port 1(vlan30) entered blocking state
bridge96: port 1(vlan30) entered disabled state
device vlan30 entered promiscuous mode
bridge98: port 1(vlan31) entered blocking state
bridge98: port 1(vlan31) entered disabled state
device vlan31 entered promiscuous mode
bridge100: port 1(vlan32) entered blocking state
bridge100: port 1(vlan32) entered disabled state
device vlan32 entered promiscuous mode
bridge102: port 1(vlan33) entered blocking state
bridge102: port 1(vlan33) entered disabled state
device vlan33 entered promiscuous mode
bridge104: port 1(vlan34) entered blocking state
bridge104: port 1(vlan34) entered disabled state
device vlan34 entered promiscuous mode
bridge106: port 1(vlan35) entered blocking state
bridge106: port 1(vlan35) entered disabled state
device vlan35 entered promiscuous mode
device bridge91 entered promiscuous mode
bridge90: port 1(vlan27) entered blocking state
bridge90: port 1(vlan27) entered forwarding state
device bridge93 entered promiscuous mode
bridge92: port 1(vlan28) entered blocking state
bridge92: port 1(vlan28) entered forwarding state
device bridge95 entered promiscuous mode
bridge94: port 1(vlan29) entered blocking state
bridge94: port 1(vlan29) entered forwarding state
device bridge97 entered promiscuous mode
bridge96: port 1(vlan30) entered blocking state
bridge96: port 1(vlan30) entered forwarding state
device bridge99 entered promiscuous mode
bridge98: port 1(vlan31) entered blocking state
bridge98: port 1(vlan31) entered forwarding state
device bridge101 entered promiscuous mode
bridge100: port 1(vlan32) entered blocking state
bridge100: port 1(vlan32) entered forwarding state
nla_parse: 145 callbacks suppressed
netlink: 12 bytes leftover after parsing attributes in process `syz-executor172'.
netlink: 20 bytes leftover after parsing attributes in process `syz-executor172'.
device bridge103 entered promiscuous mode
bridge102: port 1(vlan33) entered blocking state
bridge102: port 1(vlan33) entered forwarding state
netlink: 12 bytes leftover after parsing attributes in process `syz-executor172'.
netlink: 20 bytes leftover after parsing attributes in process `syz-executor172'.
device bridge105 entered promiscuous mode
bridge104: port 1(vlan34) entered blocking state
bridge104: port 1(vlan34) entered forwarding state
netlink: 12 bytes leftover after parsing attributes in process `syz-executor172'.
netlink: 20 bytes leftover after parsing attributes in process `syz-executor172'.
device bridge107 entered promiscuous mode
bridge106: port 1(vlan35) entered blocking state
bridge106: port 1(vlan35) entered forwarding state
netlink: 12 bytes leftover after parsing attributes in process `syz-executor172'.
netlink: 20 bytes leftover after parsing attributes in process `syz-executor172'.
netlink: 12 bytes leftover after parsing attributes in process `syz-executor172'.
bridge117: port 1(vlan36) entered blocking state
bridge117: port 1(vlan36) entered disabled state
device vlan36 entered promiscuous mode
netlink: 20 bytes leftover after parsing attributes in process `syz-executor172'.
bridge119: port 1(vlan37) entered blocking state
bridge119: port 1(vlan37) entered disabled state
device vlan37 entered promiscuous mode
bridge121: port 1(vlan38) entered blocking state
bridge121: port 1(vlan38) entered disabled state
device vlan38 entered promiscuous mode
bridge123: port 1(vlan39) entered blocking state
bridge123: port 1(vlan39) entered disabled state
device vlan39 entered promiscuous mode
bridge125: port 1(vlan40) entered blocking state
bridge125: port 1(vlan40) entered disabled state
device vlan40 entered promiscuous mode
bridge127: port 1(vlan41) entered blocking state
bridge127: port 1(vlan41) entered disabled state
device vlan41 entered promiscuous mode
bridge129: port 1(vlan42) entered blocking state
bridge129: port 1(vlan42) entered disabled state
device vlan42 entered promiscuous mode
bridge131: port 1(vlan43) entered blocking state
bridge131: port 1(vlan43) entered disabled state
device vlan43 entered promiscuous mode
bridge133: port 1(vlan44) entered blocking state
bridge133: port 1(vlan44) entered disabled state
device vlan44 entered promiscuous mode
device bridge118 entered promiscuous mode
bridge117: port 1(vlan36) entered blocking state
bridge117: port 1(vlan36) entered forwarding state
device bridge120 entered promiscuous mode
bridge119: port 1(vlan37) entered blocking state
bridge119: port 1(vlan37) entered forwarding state
device bridge122 entered promiscuous mode
bridge121: port 1(vlan38) entered blocking state
bridge121: port 1(vlan38) entered forwarding state
device bridge124 entered promiscuous mode
bridge123: port 1(vlan39) entered blocking state
bridge123: port 1(vlan39) entered forwarding state
device bridge126 entered promiscuous mode
bridge125: port 1(vlan40) entered blocking state
bridge125: port 1(vlan40) entered forwarding state
device bridge128 entered promiscuous mode
bridge127: port 1(vlan41) entered blocking state
bridge127: port 1(vlan41) entered forwarding state
device bridge130 entered promiscuous mode
bridge129: port 1(vlan42) entered blocking state
bridge129: port 1(vlan42) entered forwarding state
device bridge132 entered promiscuous mode
bridge131: port 1(vlan43) entered blocking state
bridge131: port 1(vlan43) entered forwarding state
device bridge134 entered promiscuous mode
bridge133: port 1(vlan44) entered blocking state
bridge133: port 1(vlan44) entered forwarding state
bridge144: port 1(vlan45) entered blocking state
bridge144: port 1(vlan45) entered disabled state
device vlan45 entered promiscuous mode
bridge146: port 1(vlan46) entered blocking state
bridge146: port 1(vlan46) entered disabled state
device vlan46 entered promiscuous mode
bridge148: port 1(vlan47) entered blocking state
bridge148: port 1(vlan47) entered disabled state
device vlan47 entered promiscuous mode
bridge150: port 1(vlan48) entered blocking state
bridge150: port 1(vlan48) entered disabled state
device vlan48 entered promiscuous mode
bridge152: port 1(vlan49) entered blocking state
bridge152: port 1(vlan49) entered disabled state
device vlan49 entered promiscuous mode
bridge154: port 1(vlan50) entered blocking state
bridge154: port 1(vlan50) entered disabled state
device vlan50 entered promiscuous mode
bridge156: port 1(vlan51) entered blocking state
bridge156: port 1(vlan51) entered disabled state
device vlan51 entered promiscuous mode
bridge158: port 1(vlan52) entered blocking state
bridge158: port 1(vlan52) entered disabled state
device vlan52 entered promiscuous mode
bridge160: port 1(vlan53) entered blocking state
bridge160: port 1(vlan53) entered disabled state
device vlan53 entered promiscuous mode
device bridge145 entered promiscuous mode
bridge144: port 1(vlan45) entered blocking state
bridge144: port 1(vlan45) entered forwarding state
device bridge147 entered promiscuous mode
bridge146: port 1(vlan46) entered blocking state
bridge146: port 1(vlan46) entered forwarding state
device bridge149 entered promiscuous mode
bridge148: port 1(vlan47) entered blocking state
bridge148: port 1(vlan47) entered forwarding state
device bridge151 entered promiscuous mode
bridge150: port 1(vlan48) entered blocking state
bridge150: port 1(vlan48) entered forwarding state
device bridge153 entered promiscuous mode
bridge152: port 1(vlan49) entered blocking state
bridge152: port 1(vlan49) entered forwarding state
device bridge155 entered promiscuous mode
bridge154: port 1(vlan50) entered blocking state
bridge154: port 1(vlan50) entered forwarding state
device bridge157 entered promiscuous mode
bridge156: port 1(vlan51) entered blocking state
bridge156: port 1(vlan51) entered forwarding state
device bridge159 entered promiscuous mode
bridge158: port 1(vlan52) entered blocking state
bridge158: port 1(vlan52) entered forwarding state
device bridge161 entered promiscuous mode
bridge160: port 1(vlan53) entered blocking state
bridge160: port 1(vlan53) entered forwarding state
bridge171: port 1(vlan54) entered blocking state
bridge171: port 1(vlan54) entered disabled state
device vlan54 entered promiscuous mode
bridge173: port 1(vlan55) entered blocking state
bridge173: port 1(vlan55) entered disabled state
device vlan55 entered promiscuous mode
bridge175: port 1(vlan56) entered blocking state
bridge175: port 1(vlan56) entered disabled state
device vlan56 entered promiscuous mode
bridge177: port 1(vlan57) entered blocking state
bridge177: port 1(vlan57) entered disabled state
device vlan57 entered promiscuous mode
bridge179: port 1(vlan58) entered blocking state
bridge179: port 1(vlan58) entered disabled state
device vlan58 entered promiscuous mode
bridge181: port 1(vlan59) entered blocking state
bridge181: port 1(vlan59) entered disabled state
device vlan59 entered promiscuous mode
bridge183: port 1(vlan60) entered blocking state
bridge183: port 1(vlan60) entered disabled state
device vlan60 entered promiscuous mode
bridge185: port 1(vlan61) entered blocking state
bridge185: port 1(vlan61) entered disabled state
device vlan61 entered promiscuous mode
bridge187: port 1(vlan62) entered blocking state
bridge187: port 1(vlan62) entered disabled state
device vlan62 entered promiscuous mode
device bridge172 entered promiscuous mode
bridge171: port 1(vlan54) entered blocking state
bridge171: port 1(vlan54) entered forwarding state
device bridge174 entered promiscuous mode
bridge173: port 1(vlan55) entered blocking state
bridge173: port 1(vlan55) entered forwarding state
device bridge176 entered promiscuous mode
bridge175: port 1(vlan56) entered blocking state
bridge175: port 1(vlan56) entered forwarding state
device bridge178 entered promiscuous mode
bridge177: port 1(vlan57) entered blocking state
bridge177: port 1(vlan57) entered forwarding state
device bridge180 entered promiscuous mode
bridge179: port 1(vlan58) entered blocking state
bridge179: port 1(vlan58) entered forwarding state
device bridge182 entered promiscuous mode
bridge181: port 1(vlan59) entered blocking state
bridge181: port 1(vlan59) entered forwarding state
device bridge184 entered promiscuous mode
bridge183: port 1(vlan60) entered blocking state
bridge183: port 1(vlan60) entered forwarding state
device bridge186 entered promiscuous mode
bridge185: port 1(vlan61) entered blocking state
bridge185: port 1(vlan61) entered forwarding state
device bridge188 entered promiscuous mode
bridge187: port 1(vlan62) entered blocking state
bridge187: port 1(vlan62) entered forwarding state
bridge198: port 1(vlan63) entered blocking state
bridge198: port 1(vlan63) entered disabled state
device vlan63 entered promiscuous mode
bridge200: port 1(vlan64) entered blocking state
bridge200: port 1(vlan64) entered disabled state
device vlan64 entered promiscuous mode
bridge202: port 1(vlan65) entered blocking state
bridge202: port 1(vlan65) entered disabled state
device vlan65 entered promiscuous mode
bridge204: port 1(vlan66) entered blocking state
bridge204: port 1(vlan66) entered disabled state
device vlan66 entered promiscuous mode
bridge206: port 1(vlan67) entered blocking state
bridge206: port 1(vlan67) entered disabled state
device vlan67 entered promiscuous mode
bridge208: port 1(vlan68) entered blocking state
bridge208: port 1(vlan68) entered disabled state
device vlan68 entered promiscuous mode
bridge210: port 1(vlan69) entered blocking state
bridge210: port 1(vlan69) entered disabled state
device vlan69 entered promiscuous mode
bridge212: port 1(vlan70) entered blocking state
bridge212: port 1(vlan70) entered disabled state
device vlan70 entered promiscuous mode
bridge214: port 1(vlan71) entered blocking state
bridge214: port 1(vlan71) entered disabled state
device vlan71 entered promiscuous mode
device bridge199 entered promiscuous mode
bridge198: port 1(vlan63) entered blocking state
bridge198: port 1(vlan63) entered forwarding state
device bridge201 entered promiscuous mode
bridge200: port 1(vlan64) entered blocking state
bridge200: port 1(vlan64) entered forwarding state
device bridge203 entered promiscuous mode
bridge202: port 1(vlan65) entered blocking state
bridge202: port 1(vlan65) entered forwarding state
device bridge205 entered promiscuous mode
bridge204: port 1(vlan66) entered blocking state
bridge204: port 1(vlan66) entered forwarding state
device bridge207 entered promiscuous mode
bridge206: port 1(vlan67) entered blocking state
bridge206: port 1(vlan67) entered forwarding state
device bridge209 entered promiscuous mode
bridge208: port 1(vlan68) entered blocking state
bridge208: port 1(vlan68) entered forwarding state
device bridge211 entered promiscuous mode
bridge210: port 1(vlan69) entered blocking state
bridge210: port 1(vlan69) entered forwarding state
device bridge213 entered promiscuous mode
bridge212: port 1(vlan70) entered blocking state
bridge212: port 1(vlan70) entered forwarding state
device bridge215 entered promiscuous mode
bridge214: port 1(vlan71) entered blocking state
bridge214: port 1(vlan71) entered forwarding state
bridge225: port 1(vlan72) entered blocking state
bridge225: port 1(vlan72) entered disabled state
device vlan72 entered promiscuous mode
bridge227: port 1(vlan73) entered blocking state
bridge227: port 1(vlan73) entered disabled state
device vlan73 entered promiscuous mode
bridge229: port 1(vlan74) entered blocking state
bridge229: port 1(vlan74) entered disabled state
device vlan74 entered promiscuous mode
bridge231: port 1(vlan75) entered blocking state
bridge231: port 1(vlan75) entered disabled state
device vlan75 entered promiscuous mode
bridge233: port 1(vlan76) entered blocking state
bridge233: port 1(vlan76) entered disabled state
device vlan76 entered promiscuous mode
bridge235: port 1(vlan77) entered blocking state
bridge235: port 1(vlan77) entered disabled state
device vlan77 entered promiscuous mode
bridge237: port 1(vlan78) entered blocking state
bridge237: port 1(vlan78) entered disabled state
device vlan78 entered promiscuous mode
bridge239: port 1(vlan79) entered blocking state
bridge239: port 1(vlan79) entered disabled state
device vlan79 entered promiscuous mode
bridge241: port 1(vlan80) entered blocking state
bridge241: port 1(vlan80) entered disabled state
device vlan80 entered promiscuous mode
device bridge226 entered promiscuous mode
bridge225: port 1(vlan72) entered blocking state
bridge225: port 1(vlan72) entered forwarding state
device bridge228 entered promiscuous mode
bridge227: port 1(vlan73) entered blocking state
bridge227: port 1(vlan73) entered forwarding state
device bridge230 entered promiscuous mode
bridge229: port 1(vlan74) entered blocking state
bridge229: port 1(vlan74) entered forwarding state
device bridge232 entered promiscuous mode
bridge231: port 1(vlan75) entered blocking state
bridge231: port 1(vlan75) entered forwarding state
device bridge234 entered promiscuous mode
bridge233: port 1(vlan76) entered blocking state
bridge233: port 1(vlan76) entered forwarding state
device bridge236 entered promiscuous mode
bridge235: port 1(vlan77) entered blocking state
bridge235: port 1(vlan77) entered forwarding state
nla_parse: 170 callbacks suppressed
netlink: 12 bytes leftover after parsing attributes in process `syz-executor172'.
netlink: 20 bytes leftover after parsing attributes in process `syz-executor172'.
device bridge238 entered promiscuous mode
bridge237: port 1(vlan78) entered blocking state
bridge237: port 1(vlan78) entered forwarding state
netlink: 12 bytes leftover after parsing attributes in process `syz-executor172'.
netlink: 20 bytes leftover after parsing attributes in process `syz-executor172'.
device bridge240 entered promiscuous mode
bridge239: port 1(vlan79) entered blocking state
bridge239: port 1(vlan79) entered forwarding state
netlink: 12 bytes leftover after parsing attributes in process `syz-executor172'.
netlink: 20 bytes leftover after parsing attributes in process `syz-executor172'.
device bridge242 entered promiscuous mode
bridge241: port 1(vlan80) entered blocking state
bridge241: port 1(vlan80) entered forwarding state
netlink: 12 bytes leftover after parsing attributes in process `syz-executor172'.
netlink: 20 bytes leftover after parsing attributes in process `syz-executor172'.
netlink: 12 bytes leftover after parsing attributes in process `syz-executor172'.
bridge252: port 1(vlan81) entered blocking state
bridge252: port 1(vlan81) entered disabled state
device vlan81 entered promiscuous mode
netlink: 20 bytes leftover after parsing attributes in process `syz-executor172'.
bridge254: port 1(vlan82) entered blocking state
bridge254: port 1(vlan82) entered disabled state
device vlan82 entered promiscuous mode
bridge256: port 1(vlan83) entered blocking state
bridge256: port 1(vlan83) entered disabled state
device vlan83 entered promiscuous mode
bridge258: port 1(vlan84) entered blocking state
bridge258: port 1(vlan84) entered disabled state
device vlan84 entered promiscuous mode
bridge260: port 1(vlan85) entered blocking state
bridge260: port 1(vlan85) entered disabled state
device vlan85 entered promiscuous mode
bridge262: port 1(vlan86) entered blocking state
bridge262: port 1(vlan86) entered disabled state
device vlan86 entered promiscuous mode
bridge264: port 1(vlan87) entered blocking state
bridge264: port 1(vlan87) entered disabled state
device vlan87 entered promiscuous mode
bridge266: port 1(vlan88) entered blocking state
bridge266: port 1(vlan88) entered disabled state
device vlan88 entered promiscuous mode
bridge268: port 1(vlan89) entered blocking state
bridge268: port 1(vlan89) entered disabled state
device vlan89 entered promiscuous mode
device bridge253 entered promiscuous mode
bridge252: port 1(vlan81) entered blocking state
bridge252: port 1(vlan81) entered forwarding state
device bridge255 entered promiscuous mode
bridge254: port 1(vlan82) entered blocking state
bridge254: port 1(vlan82) entered forwarding state
device bridge257 entered promiscuous mode
bridge256: port 1(vlan83) entered blocking state
bridge256: port 1(vlan83) entered forwarding state

Crashes (1):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2023/01/21 00:07 linux-4.14.y 97205fccccdc dd15ff29 .config console log report syz C [disk image] [vmlinux] [kernel image] ci2-linux-4-14 possible deadlock in br_multicast_rcv
* Struck through repros no longer work on HEAD.