UBSAN: undefined-behaviour in red_change

[syzbot]

Hello,

syzbot found the following issue on:

HEAD commit: d09b8017 Linux 4.19.147
git tree: linux-4.19.y
console output: https://syzkaller.appspot.com/x/log.txt?x=14ca88ad900000
kernel config: https://syzkaller.appspot.com/x/.config?x=1d6e3516b2a7476c
dashboard link: https://syzkaller.appspot.com/bug?extid=dc4229ec024e34b71a59
compiler: gcc (GCC) 10.1.0-syz 20200507

Unfortunately, I don't have any reproducer for this issue yet.

IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+dc4229...@syzkaller.appspotmail.com

netlink: 40 bytes leftover after parsing attributes in process `syz-executor.4'.
================================================================================
UBSAN: Undefined behaviour in ./include/net/red.h:214:22
shift exponent 75 is too large for 32-bit type 'int'
CPU: 1 PID: 29691 Comm: syz-executor.1 Not tainted 4.19.147-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
__dump_stack lib/dump_stack.c:77 [inline]
dump_stack+0x22c/0x33e lib/dump_stack.c:118
ubsan_epilogue+0xe/0x3a lib/ubsan.c:161
__ubsan_handle_shift_out_of_bounds.cold+0x1c4/0x250 lib/ubsan.c:422
red_set_parms include/net/red.h:214 [inline]
red_change.cold+0x4d/0xd3 net/sched/sch_red.c:240
qdisc_create+0x534/0x1080 net/sched/sch_api.c:1155
tc_modify_qdisc+0x4c0/0x195b net/sched/sch_api.c:1571
rtnetlink_rcv_msg+0x498/0xc10 net/core/rtnetlink.c:4778
netlink_rcv_skb+0x160/0x440 net/netlink/af_netlink.c:2455
netlink_unicast_kernel net/netlink/af_netlink.c:1318 [inline]
netlink_unicast+0x4d5/0x690 net/netlink/af_netlink.c:1344
netlink_sendmsg+0x717/0xcc0 net/netlink/af_netlink.c:1909
sock_sendmsg_nosec net/socket.c:622 [inline]
sock_sendmsg+0xc7/0x130 net/socket.c:632
___sys_sendmsg+0x3b3/0x8f0 net/socket.c:2115
__sys_sendmmsg+0x195/0x470 net/socket.c:2210
__do_sys_sendmmsg net/socket.c:2239 [inline]
__se_sys_sendmmsg net/socket.c:2236 [inline]
__x64_sys_sendmmsg+0x99/0x100 net/socket.c:2236
do_syscall_64+0xf9/0x670 arch/x86/entry/common.c:293
entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x45e179
Code: 3d b2 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 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 0f 83 0b b2 fb ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007fc0cfe19c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000133
RAX: ffffffffffffffda RBX: 0000000000027f40 RCX: 000000000045e179
RDX: 0492492492492642 RSI: 0000000020000180 RDI: 0000000000000004
RBP: 000000000118cf88 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 000000000118cf4c
R13: 00007ffd0346f44f R14: 00007fc0cfe1a9c0 R15: 000000000118cf4c
================================================================================
netlink: 40 bytes leftover after parsing attributes in process `syz-executor.4'.
netlink: 40 bytes leftover after parsing attributes in process `syz-executor.4'.
================================================================================
UBSAN: Undefined behaviour in ./include/net/red.h:269:27
shift exponent 75 is too large for 64-bit type 'long int'
CPU: 1 PID: 0 Comm: swapper/1 Not tainted 4.19.147-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
<IRQ>
__dump_stack lib/dump_stack.c:77 [inline]
dump_stack+0x22c/0x33e lib/dump_stack.c:118
ubsan_epilogue+0xe/0x3a lib/ubsan.c:161
__ubsan_handle_shift_out_of_bounds.cold+0x1c4/0x250 lib/ubsan.c:422
red_calc_qavg_from_idle_time include/net/red.h:269 [inline]
red_adaptative_algo include/net/red.h:404 [inline]
red_adaptative_timer+0x665/0x870 net/sched/sch_red.c:266
call_timer_fn+0x177/0x760 kernel/time/timer.c:1338
expire_timers+0x243/0x500 kernel/time/timer.c:1375
__run_timers kernel/time/timer.c:1703 [inline]
run_timer_softirq+0x259/0x730 kernel/time/timer.c:1716
__do_softirq+0x27d/0xad2 kernel/softirq.c:292
invoke_softirq kernel/softirq.c:372 [inline]
irq_exit+0x22d/0x270 kernel/softirq.c:412
exiting_irq arch/x86/include/asm/apic.h:544 [inline]
smp_apic_timer_interrupt+0x15f/0x5d0 arch/x86/kernel/apic/apic.c:1094
apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:894
</IRQ>
RIP: 0010:native_safe_halt+0xe/0x10 arch/x86/include/asm/irqflags.h:61
Code: e9 73 fd ff ff 48 89 df e8 0f 72 fa f9 e9 59 ff ff ff 90 90 90 90 90 90 90 90 90 90 e9 07 00 00 00 0f 00 2d 94 c8 57 00 fb f4 <c3> 90 e9 07 00 00 00 0f 00 2d 84 c8 57 00 f4 c3 90 90 41 56 41 55
RSP: 0018:ffff8880a9a6fd58 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff13
RAX: 1ffffffff12c7138 RBX: dffffc0000000000 RCX: 0000000000000000
RDX: dffffc0000000000 RSI: 0000000000000001 RDI: ffff8880a9a60c44
RBP: 0000000000000001 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: ffffffff896389b0
R13: 1ffff1101534dfb5 R14: 0000000000000000 R15: 0000000000000000
arch_safe_halt arch/x86/include/asm/paravirt.h:94 [inline]
default_idle+0x49/0x320 arch/x86/kernel/process.c:557
cpuidle_idle_call kernel/sched/idle.c:153 [inline]
do_idle+0x2f8/0x500 kernel/sched/idle.c:263
cpu_startup_entry+0xc5/0xd6 kernel/sched/idle.c:369
start_secondary+0x44d/0x610 arch/x86/kernel/smpboot.c:271
secondary_startup_64+0xa4/0xb0 arch/x86/kernel/head_64.S:243
================================================================================
================================================================================
UBSAN: Undefined behaviour in ./include/net/red.h:272:18
shift exponent 157 is too large for 64-bit type 'long unsigned int'
CPU: 1 PID: 0 Comm: swapper/1 Not tainted 4.19.147-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
<IRQ>
__dump_stack lib/dump_stack.c:77 [inline]
dump_stack+0x22c/0x33e lib/dump_stack.c:118
ubsan_epilogue+0xe/0x3a lib/ubsan.c:161
__ubsan_handle_shift_out_of_bounds.cold+0x1c4/0x250 lib/ubsan.c:422
red_calc_qavg_from_idle_time include/net/red.h:272 [inline]
red_adaptative_algo include/net/red.h:404 [inline]
red_adaptative_timer+0x7ed/0x870 net/sched/sch_red.c:266
call_timer_fn+0x177/0x760 kernel/time/timer.c:1338
expire_timers+0x243/0x500 kernel/time/timer.c:1375
__run_timers kernel/time/timer.c:1703 [inline]
run_timer_softirq+0x259/0x730 kernel/time/timer.c:1716
__do_softirq+0x27d/0xad2 kernel/softirq.c:292
invoke_softirq kernel/softirq.c:372 [inline]
irq_exit+0x22d/0x270 kernel/softirq.c:412
exiting_irq arch/x86/include/asm/apic.h:544 [inline]
smp_apic_timer_interrupt+0x15f/0x5d0 arch/x86/kernel/apic/apic.c:1094
apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:894
</IRQ>
RIP: 0010:native_safe_halt+0xe/0x10 arch/x86/include/asm/irqflags.h:61
Code: e9 73 fd ff ff 48 89 df e8 0f 72 fa f9 e9 59 ff ff ff 90 90 90 90 90 90 90 90 90 90 e9 07 00 00 00 0f 00 2d 94 c8 57 00 fb f4 <c3> 90 e9 07 00 00 00 0f 00 2d 84 c8 57 00 f4 c3 90 90 41 56 41 55
RSP: 0018:ffff8880a9a6fd58 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff13
RAX: 1ffffffff12c7138 RBX: dffffc0000000000 RCX: 0000000000000000
RDX: dffffc0000000000 RSI: 0000000000000001 RDI: ffff8880a9a60c44
RBP: 0000000000000001 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: ffffffff896389b0
R13: 1ffff1101534dfb5 R14: 0000000000000000 R15: 0000000000000000
arch_safe_halt arch/x86/include/asm/paravirt.h:94 [inline]
default_idle+0x49/0x320 arch/x86/kernel/process.c:557
cpuidle_idle_call kernel/sched/idle.c:153 [inline]
do_idle+0x2f8/0x500 kernel/sched/idle.c:263
cpu_startup_entry+0xc5/0xd6 kernel/sched/idle.c:369
start_secondary+0x44d/0x610 arch/x86/kernel/smpboot.c:271
secondary_startup_64+0xa4/0xb0 arch/x86/kernel/head_64.S:243
================================================================================
================================================================================
UBSAN: Undefined behaviour in ./include/net/red.h:281:38
shift exponent 75 is too large for 64-bit type 'long long unsigned int'
CPU: 1 PID: 0 Comm: swapper/1 Not tainted 4.19.147-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
<IRQ>
__dump_stack lib/dump_stack.c:77 [inline]
dump_stack+0x22c/0x33e lib/dump_stack.c:118
ubsan_epilogue+0xe/0x3a lib/ubsan.c:161
__ubsan_handle_shift_out_of_bounds.cold+0x1c4/0x250 lib/ubsan.c:422
red_calc_qavg_from_idle_time include/net/red.h:281 [inline]
red_adaptative_algo include/net/red.h:404 [inline]
red_adaptative_timer+0x76a/0x870 net/sched/sch_red.c:266
call_timer_fn+0x177/0x760 kernel/time/timer.c:1338
expire_timers+0x243/0x500 kernel/time/timer.c:1375
__run_timers kernel/time/timer.c:1703 [inline]
run_timer_softirq+0x259/0x730 kernel/time/timer.c:1716
__do_softirq+0x27d/0xad2 kernel/softirq.c:292
invoke_softirq kernel/softirq.c:372 [inline]
irq_exit+0x22d/0x270 kernel/softirq.c:412
exiting_irq arch/x86/include/asm/apic.h:544 [inline]
smp_apic_timer_interrupt+0x15f/0x5d0 arch/x86/kernel/apic/apic.c:1094
apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:894
</IRQ>
RIP: 0010:native_safe_halt+0xe/0x10 arch/x86/include/asm/irqflags.h:61
Code: e9 73 fd ff ff 48 89 df e8 0f 72 fa f9 e9 59 ff ff ff 90 90 90 90 90 90 90 90 90 90 e9 07 00 00 00 0f 00 2d 94 c8 57 00 fb f4 <c3> 90 e9 07 00 00 00 0f 00 2d 84 c8 57 00 f4 c3 90 90 41 56 41 55
RSP: 0018:ffff8880a9a6fd58 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff13
RAX: 1ffffffff12c7138 RBX: dffffc0000000000 RCX: 0000000000000000
RDX: dffffc0000000000 RSI: 0000000000000001 RDI: ffff8880a9a60c44
RBP: 0000000000000001 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: ffffffff896389b0
R13: 1ffff1101534dfb5 R14: 0000000000000000 R15: 0000000000000000
arch_safe_halt arch/x86/include/asm/paravirt.h:94 [inline]
default_idle+0x49/0x320 arch/x86/kernel/process.c:557
cpuidle_idle_call kernel/sched/idle.c:153 [inline]
do_idle+0x2f8/0x500 kernel/sched/idle.c:263
cpu_startup_entry+0xc5/0xd6 kernel/sched/idle.c:369
start_secondary+0x44d/0x610 arch/x86/kernel/smpboot.c:271
secondary_startup_64+0xa4/0xb0 arch/x86/kernel/head_64.S:243
================================================================================
netlink: 40 bytes leftover after parsing attributes in process `syz-executor.4'.
netlink: 24 bytes leftover after parsing attributes in process `syz-executor.4'.
netlink: 24 bytes leftover after parsing attributes in process `syz-executor.4'.
audit: type=1326 audit(1601065783.628:114): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=29776 comm="syz-executor.5" exe="/root/syz-executor.5" sig=31 arch=c000003e syscall=228 compat=0 ip=0x460fba code=0x0
netlink: 24 bytes leftover after parsing attributes in process `syz-executor.4'.
netlink: 24 bytes leftover after parsing attributes in process `syz-executor.4'.
netlink: 24 bytes leftover after parsing attributes in process `syz-executor.4'.
audit: type=1326 audit(1601065784.408:115): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=29776 comm="syz-executor.5" exe="/root/syz-executor.5" sig=31 arch=c000003e syscall=228 compat=0 ip=0x460fba code=0x0
netlink: 24 bytes leftover after parsing attributes in process `syz-executor.4'.
netlink: 24 bytes leftover after parsing attributes in process `syz-executor.4'.
netlink: 24 bytes leftover after parsing attributes in process `syz-executor.4'.
delete_channel: no stack
delete_channel: no stack
netlink: 24 bytes leftover after parsing attributes in process `syz-executor.4'.
netlink: 28 bytes leftover after parsing attributes in process `syz-executor.4'.


---
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syzbot will keep track of this issue. See:
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[syzbot]

syzbot has found a reproducer for the following issue on:

HEAD commit: d09b8017 Linux 4.19.147
git tree: linux-4.19.y

console output: https://syzkaller.appspot.com/x/log.txt?x=15956e09900000

kernel config: https://syzkaller.appspot.com/x/.config?x=1d6e3516b2a7476c
dashboard link: https://syzkaller.appspot.com/bug?extid=dc4229ec024e34b71a59
compiler: gcc (GCC) 10.1.0-syz 20200507

syz repro: https://syzkaller.appspot.com/x/repro.syz?x=1472a109900000
C reproducer: https://syzkaller.appspot.com/x/repro.c?x=16abbbc3900000

IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+dc4229...@syzkaller.appspotmail.com

batman_adv: batadv0: Interface activated: batadv_slave_1
IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready
IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready

================================================================================
UBSAN: Undefined behaviour in ./include/net/red.h:214:22
shift exponent 75 is too large for 32-bit type 'int'

CPU: 1 PID: 6491 Comm: syz-executor845 Not tainted 4.19.147-syzkaller #0

Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
__dump_stack lib/dump_stack.c:77 [inline]
dump_stack+0x22c/0x33e lib/dump_stack.c:118
ubsan_epilogue+0xe/0x3a lib/ubsan.c:161
__ubsan_handle_shift_out_of_bounds.cold+0x1c4/0x250 lib/ubsan.c:422
red_set_parms include/net/red.h:214 [inline]
red_change.cold+0x4d/0xd3 net/sched/sch_red.c:240
qdisc_create+0x534/0x1080 net/sched/sch_api.c:1155
tc_modify_qdisc+0x4c0/0x195b net/sched/sch_api.c:1571
rtnetlink_rcv_msg+0x498/0xc10 net/core/rtnetlink.c:4778
netlink_rcv_skb+0x160/0x440 net/netlink/af_netlink.c:2455
netlink_unicast_kernel net/netlink/af_netlink.c:1318 [inline]
netlink_unicast+0x4d5/0x690 net/netlink/af_netlink.c:1344
netlink_sendmsg+0x717/0xcc0 net/netlink/af_netlink.c:1909
sock_sendmsg_nosec net/socket.c:622 [inline]
sock_sendmsg+0xc7/0x130 net/socket.c:632
___sys_sendmsg+0x3b3/0x8f0 net/socket.c:2115
__sys_sendmmsg+0x195/0x470 net/socket.c:2210
__do_sys_sendmmsg net/socket.c:2239 [inline]
__se_sys_sendmmsg net/socket.c:2236 [inline]
__x64_sys_sendmmsg+0x99/0x100 net/socket.c:2236
do_syscall_64+0xf9/0x670 arch/x86/entry/common.c:293
entry_SYSCALL_64_after_hwframe+0x49/0xbe

RIP: 0033:0x443709
Code: 18 89 d0 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 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 0f 83 db 0d fc ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007ffc880ae8d8 EFLAGS: 00000246 ORIG_RAX: 0000000000000133
RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000443709

RDX: 0492492492492642 RSI: 0000000020000180 RDI: 0000000000000004

RBP: 00007ffc880ae8e0 R08: 0000000001bbbbbb R09: 0000000001bbbbbb
R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc880ae8f0
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
================================================================================
================================================================================

UBSAN: Undefined behaviour in ./include/net/red.h:269:27
shift exponent 75 is too large for 64-bit type 'long int'

CPU: 1 PID: 2915 Comm: kworker/1:2 Not tainted 4.19.147-syzkaller #0

Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011

Workqueue: ipv6_addrconf addrconf_dad_work

Call Trace:
__dump_stack lib/dump_stack.c:77 [inline]
dump_stack+0x22c/0x33e lib/dump_stack.c:118
ubsan_epilogue+0xe/0x3a lib/ubsan.c:161
__ubsan_handle_shift_out_of_bounds.cold+0x1c4/0x250 lib/ubsan.c:422

red_calc_qavg_from_idle_time include/net/red.h:269 [inline]
red_calc_qavg include/net/red.h:313 [inline]
red_enqueue+0x1ced/0x2200 net/sched/sch_red.c:68
__dev_xmit_skb net/core/dev.c:3494 [inline]
__dev_queue_xmit+0x14e1/0x2ec0 net/core/dev.c:3807
br_dev_queue_push_xmit+0x25a/0x6c0 net/bridge/br_forward.c:56
NF_HOOK include/linux/netfilter.h:289 [inline]
br_forward_finish+0xb5/0x430 net/bridge/br_forward.c:69
NF_HOOK include/linux/netfilter.h:289 [inline]
__br_forward+0x693/0xbb0 net/bridge/br_forward.c:113
deliver_clone net/bridge/br_forward.c:129 [inline]
maybe_deliver+0x2d2/0x3c0 net/bridge/br_forward.c:184
br_flood+0x180/0x4f0 net/bridge/br_forward.c:226
br_dev_xmit+0xdd0/0x1510 net/bridge/br_device.c:103
__netdev_start_xmit include/linux/netdevice.h:4333 [inline]
netdev_start_xmit include/linux/netdevice.h:4347 [inline]
xmit_one net/core/dev.c:3256 [inline]
dev_hard_start_xmit+0x1a8/0x960 net/core/dev.c:3272
__dev_queue_xmit+0x276a/0x2ec0 net/core/dev.c:3838
neigh_hh_output include/net/neighbour.h:491 [inline]
neigh_output include/net/neighbour.h:499 [inline]
ip6_finish_output2+0xe78/0x2370 net/ipv6/ip6_output.c:120
ip6_finish_output+0x610/0xcc0 net/ipv6/ip6_output.c:154
NF_HOOK_COND include/linux/netfilter.h:278 [inline]
ip6_output+0x205/0x7c0 net/ipv6/ip6_output.c:171
dst_output include/net/dst.h:455 [inline]
NF_HOOK include/linux/netfilter.h:289 [inline]
mld_sendpack+0x6c1/0x1120 net/ipv6/mcast.c:1684
mld_send_initial_cr.part.0+0x106/0x150 net/ipv6/mcast.c:2101
mld_send_initial_cr net/ipv6/mcast.c:2114 [inline]
ipv6_mc_dad_complete+0x192/0x1d0 net/ipv6/mcast.c:2108
addrconf_dad_completed+0x8f3/0xb60 net/ipv6/addrconf.c:4131
addrconf_dad_work+0x787/0x1130 net/ipv6/addrconf.c:4062
process_one_work+0x796/0x14e0 kernel/workqueue.c:2155
worker_thread+0x64c/0x1130 kernel/workqueue.c:2298
kthread+0x33f/0x460 kernel/kthread.c:259
ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:415

================================================================================
================================================================================
UBSAN: Undefined behaviour in ./include/net/red.h:272:18

shift exponent 163 is too large for 64-bit type 'long unsigned int'
CPU: 1 PID: 2915 Comm: kworker/1:2 Not tainted 4.19.147-syzkaller #0

Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011

Workqueue: ipv6_addrconf addrconf_dad_work

Call Trace:
<IRQ>
__dump_stack lib/dump_stack.c:77 [inline]
dump_stack+0x22c/0x33e lib/dump_stack.c:118
ubsan_epilogue+0xe/0x3a lib/ubsan.c:161
__ubsan_handle_shift_out_of_bounds.cold+0x1c4/0x250 lib/ubsan.c:422
red_calc_qavg_from_idle_time include/net/red.h:272 [inline]

red_calc_qavg include/net/red.h:313 [inline]
red_enqueue+0x2064/0x2200 net/sched/sch_red.c:68
__dev_xmit_skb net/core/dev.c:3494 [inline]
__dev_queue_xmit+0x14e1/0x2ec0 net/core/dev.c:3807
br_dev_queue_push_xmit+0x25a/0x6c0 net/bridge/br_forward.c:56
br_nf_dev_queue_xmit+0x2c3/0x15d0 net/bridge/br_netfilter_hooks.c:727
NF_HOOK include/linux/netfilter.h:289 [inline]
br_nf_post_routing+0xa7e/0x11f0 net/bridge/br_netfilter_hooks.c:828
nf_hook_entry_hookfn include/linux/netfilter.h:119 [inline]
nf_hook_slow+0xc5/0x1e0 net/netfilter/core.c:511
nf_hook include/linux/netfilter.h:244 [inline]
NF_HOOK include/linux/netfilter.h:287 [inline]
br_forward_finish+0x29a/0x430 net/bridge/br_forward.c:69
br_nf_hook_thresh+0x2d7/0x370 net/bridge/br_netfilter_hooks.c:1011
br_nf_forward_finish+0x335/0x6d0 net/bridge/br_netfilter_hooks.c:553
NF_HOOK include/linux/netfilter.h:289 [inline]
br_nf_forward_ip+0xad1/0x1620 net/bridge/br_netfilter_hooks.c:620
nf_hook_entry_hookfn include/linux/netfilter.h:119 [inline]
nf_hook_slow+0xc5/0x1e0 net/netfilter/core.c:511
nf_hook include/linux/netfilter.h:244 [inline]
NF_HOOK include/linux/netfilter.h:287 [inline]
__br_forward+0x3c8/0xbb0 net/bridge/br_forward.c:113
deliver_clone net/bridge/br_forward.c:129 [inline]
br_flood+0x3ee/0x4f0 net/bridge/br_forward.c:238
br_handle_frame_finish+0xfcc/0x14d0 net/bridge/br_input.c:167
br_nf_hook_thresh+0x2d7/0x370 net/bridge/br_netfilter_hooks.c:1011
br_nf_pre_routing_finish_ipv6+0x701/0xd90 net/bridge/br_netfilter_ipv6.c:210
NF_HOOK include/linux/netfilter.h:289 [inline]
br_nf_pre_routing_ipv6+0x3f4/0x8ca net/bridge/br_netfilter_ipv6.c:240
br_nf_pre_routing+0x9c7/0x152c net/bridge/br_netfilter_hooks.c:494
nf_hook_entry_hookfn include/linux/netfilter.h:119 [inline]
nf_hook_slow+0xc5/0x1e0 net/netfilter/core.c:511
nf_hook include/linux/netfilter.h:244 [inline]
NF_HOOK include/linux/netfilter.h:287 [inline]
br_handle_frame+0xb24/0x151a net/bridge/br_input.c:306
__netif_receive_skb_core+0x7d5/0x33c0 net/core/dev.c:4876
__netif_receive_skb_one_core+0xae/0x180 net/core/dev.c:4952
__netif_receive_skb+0x27/0x1c0 net/core/dev.c:5066
process_backlog+0x259/0x750 net/core/dev.c:5848
napi_poll net/core/dev.c:6272 [inline]
net_rx_action+0x4e5/0x10d0 net/core/dev.c:6338
__do_softirq+0x27d/0xad2 kernel/softirq.c:292
do_softirq_own_stack+0x2a/0x40 arch/x86/entry/entry_64.S:1092
</IRQ>
do_softirq.part.0+0x168/0x200 kernel/softirq.c:336
do_softirq kernel/softirq.c:328 [inline]
__local_bh_enable_ip+0x22d/0x2a0 kernel/softirq.c:189
local_bh_enable include/linux/bottom_half.h:32 [inline]
rcu_read_unlock_bh include/linux/rcupdate.h:721 [inline]
ip6_finish_output2+0x120d/0x2370 net/ipv6/ip6_output.c:121
ip6_finish_output+0x610/0xcc0 net/ipv6/ip6_output.c:154
NF_HOOK_COND include/linux/netfilter.h:278 [inline]
ip6_output+0x205/0x7c0 net/ipv6/ip6_output.c:171
dst_output include/net/dst.h:455 [inline]
NF_HOOK include/linux/netfilter.h:289 [inline]
mld_sendpack+0x6c1/0x1120 net/ipv6/mcast.c:1684
mld_send_initial_cr.part.0+0x106/0x150 net/ipv6/mcast.c:2101
mld_send_initial_cr net/ipv6/mcast.c:2114 [inline]
ipv6_mc_dad_complete+0x192/0x1d0 net/ipv6/mcast.c:2108
addrconf_dad_completed+0x8f3/0xb60 net/ipv6/addrconf.c:4131
addrconf_dad_work+0x787/0x1130 net/ipv6/addrconf.c:4062
process_one_work+0x796/0x14e0 kernel/workqueue.c:2155
worker_thread+0x64c/0x1130 kernel/workqueue.c:2298
kthread+0x33f/0x460 kernel/kthread.c:259
ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:415
================================================================================