FAT-fs (loop3): Unrecognized mount option "time_nffset=0hffú4UÛñXzõÐ?i¾%KÙìL" or missing value
ptrace attach of "/root/syz-executor.5"[26761] was attempted by "/root/syz-executor.5"[26766]
================================================================================
UBSAN: Undefined behaviour in net/sched/sch_netem.c:333:16
division by zero
CPU: 1 PID: 6438 Comm: kworker/u4:5 Not tainted 4.19.150-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: bat_events batadv_nc_worker
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_divrem_overflow.cold+0xa4/0xcf lib/ubsan.c:257
tabledist.part.0.cold+0x16/0x1b net/sched/sch_netem.c:333
tabledist net/sched/sch_netem.c:534 [inline]
netem_enqueue+0x45e/0x318a net/sched/sch_netem.c:534
__dev_xmit_skb net/core/dev.c:3494 [inline]
__dev_queue_xmit+0x14e1/0x2ec0 net/core/dev.c:3807
neigh_resolve_output+0x55a/0x950 net/core/neighbour.c:1374
neigh_output include/net/neighbour.h:501 [inline]
ip6_finish_output2+0x1184/0x2370 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_cr net/ipv6/mcast.c:1980 [inline]
mld_ifc_timer_expire+0x616/0xc00 net/ipv6/mcast.c:2479
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
RIP: 0010:arch_local_irq_restore arch/x86/include/asm/paravirt.h:789 [inline]
RIP: 0010:lock_acquire+0x1ec/0x3f0 kernel/locking/lockdep.c:3910
Code: 08 00 00 00 00 00 00 48 c1 e8 03 80 3c 10 00 0f 85 dd 01 00 00 48 83 3d 09 8e 0b 08 00 0f 84 4e 01 00 00 48 8b 7c 24 08 57 9d <0f> 1f 44 00 00 48 83 c4 18 5b 5d 41 5c 41 5d 41 5e 41 5f c3 65 8b
RSP: 0018:ffff88808aadfbf0 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff13
RAX: 1ffffffff12c713d RBX: ffff8880a3c364c0 RCX: 00000000ea9a094e
RDX: dffffc0000000000 RSI: ffff8880a3c36d48 RDI: 0000000000000286
RBP: ffffffff89735220 R08: 000000001e758529 R09: 0000000000000000
R10: 0000000000000050 R11: 0000000000000002 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000002 R15: 0000000000000000
rcu_lock_acquire include/linux/rcupdate.h:242 [inline]
rcu_read_lock include/linux/rcupdate.h:627 [inline]
batadv_nc_process_nc_paths.part.0+0xec/0x410 net/batman-adv/network-coding.c:698
batadv_nc_process_nc_paths net/batman-adv/network-coding.c:690 [inline]
batadv_nc_worker+0x9f4/0xd90 net/batman-adv/network-coding.c:739
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
================================================================================
divide error: 0000 [#1] PREEMPT SMP KASAN
CPU: 1 PID: 6438 Comm: kworker/u4:5 Not tainted 4.19.150-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: bat_events batadv_nc_worker
RIP: 0010:tabledist.part.0+0x25f/0x320 net/sched/sch_netem.c:333
Code: fe ff ff e8 53 6b 36 fb 8d 5c 2d 00 31 ff 89 de e8 b6 6c 36 fb 85 db 0f 84 c9 44 00 00 e8 39 6b 36 fb 44 89 f0 31 d2 49 29 ec f3 49 01 d4 e9 15 ff ff ff e8 22 6b 36 fb 48 81 eb 00 10 00 00
RSP: 0018:ffff8880ae307518 EFLAGS: 00010207
RAX: 00000000155a2f4c RBX: 0000000000000000 RCX: 0000000000000000
RDX: 0000000000000000 RSI: ffffffff863b6727 RDI: 0000000000000001
RBP: ffffffff80000000 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000080000000
R13: ffff88809fd587ac R14: 00000000155a2f4c R15: 0000000000000000
FS: 0000000000000000(0000) GS:ffff8880ae300000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b32321000 CR3: 0000000099b60000 CR4: 00000000001406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
tabledist net/sched/sch_netem.c:534 [inline]
netem_enqueue+0x45e/0x318a net/sched/sch_netem.c:534
__dev_xmit_skb net/core/dev.c:3494 [inline]
__dev_queue_xmit+0x14e1/0x2ec0 net/core/dev.c:3807
neigh_resolve_output+0x55a/0x950 net/core/neighbour.c:1374
neigh_output include/net/neighbour.h:501 [inline]
ip6_finish_output2+0x1184/0x2370 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_cr net/ipv6/mcast.c:1980 [inline]
mld_ifc_timer_expire+0x616/0xc00 net/ipv6/mcast.c:2479
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
RIP: 0010:arch_local_irq_restore arch/x86/include/asm/paravirt.h:789 [inline]
RIP: 0010:lock_acquire+0x1ec/0x3f0 kernel/locking/lockdep.c:3910
Code: 08 00 00 00 00 00 00 48 c1 e8 03 80 3c 10 00 0f 85 dd 01 00 00 48 83 3d 09 8e 0b 08 00 0f 84 4e 01 00 00 48 8b 7c 24 08 57 9d <0f> 1f 44 00 00 48 83 c4 18 5b 5d 41 5c 41 5d 41 5e 41 5f c3 65 8b
RSP: 0018:ffff88808aadfbf0 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff13
RAX: 1ffffffff12c713d RBX: ffff8880a3c364c0 RCX: 00000000ea9a094e
RDX: dffffc0000000000 RSI: ffff8880a3c36d48 RDI: 0000000000000286
RBP: ffffffff89735220 R08: 000000001e758529 R09: 0000000000000000
R10: 0000000000000050 R11: 0000000000000002 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000002 R15: 0000000000000000
rcu_lock_acquire include/linux/rcupdate.h:242 [inline]
rcu_read_lock include/linux/rcupdate.h:627 [inline]
batadv_nc_process_nc_paths.part.0+0xec/0x410 net/batman-adv/network-coding.c:698
batadv_nc_process_nc_paths net/batman-adv/network-coding.c:690 [inline]
batadv_nc_worker+0x9f4/0xd90 net/batman-adv/network-coding.c:739
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
Modules linked in:
---[ end trace a17d2da8c6c9575f ]---
RIP: 0010:tabledist.part.0+0x25f/0x320 net/sched/sch_netem.c:333
Code: fe ff ff e8 53 6b 36 fb 8d 5c 2d 00 31 ff 89 de e8 b6 6c 36 fb 85 db 0f 84 c9 44 00 00 e8 39 6b 36 fb 44 89 f0 31 d2 49 29 ec f3 49 01 d4 e9 15 ff ff ff e8 22 6b 36 fb 48 81 eb 00 10 00 00
RSP: 0018:ffff8880ae307518 EFLAGS: 00010207
RAX: 00000000155a2f4c RBX: 0000000000000000 RCX: 0000000000000000
RDX: 0000000000000000 RSI: ffffffff863b6727 RDI: 0000000000000001
RBP: ffffffff80000000 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000080000000
R13: ffff88809fd587ac R14: 00000000155a2f4c R15: 0000000000000000
FS: 0000000000000000(0000) GS:ffff8880ae300000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b32321000 CR3: 0000000099b60000 CR4: 00000000001406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400