possible deadlock in sch_direct_xmit (2)
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syzbot
Nov 16, 2019, 3:58:10 PM11/16/19
to syzkaller...@googlegroups.com
Hello,
syzbot found the following crash on:
HEAD commit: 775d01b6 Linux 4.14.154
git tree: linux-4.14.y
console output: https://syzkaller.appspot.com/x/log.txt?x=151acb3ae00000
kernel config: https://syzkaller.appspot.com/x/.config?x=90a13857da9a45b6
dashboard link: https://syzkaller.appspot.com/bug?extid=fdad8205fa161e56cfa9
compiler: gcc (GCC) 9.0.0 20181231 (experimental)
Unfortunately, I don't have any reproducer for this crash yet.
IMPORTANT: if you fix the bug, please add the following tag to the commit:
Reported-by: syzbot+fdad82...@syzkaller.appspotmail.com
======================================================
WARNING: possible circular locking dependency detected
4.14.154 #0 Not tainted
------------------------------------------------------
syz-executor.3/11891 is trying to acquire lock:
(_xmit_TUNNEL6#2){+.-.}, at: [<ffffffff84e3cb5c>] spin_lock
include/linux/spinlock.h:317 [inline]
(_xmit_TUNNEL6#2){+.-.}, at: [<ffffffff84e3cb5c>] __netif_tx_lock
include/linux/netdevice.h:3530 [inline]
(_xmit_TUNNEL6#2){+.-.}, at: [<ffffffff84e3cb5c>]
sch_direct_xmit+0x1fc/0x550 net/sched/sch_generic.c:184
but task is already holding lock:
(dev->qdisc_tx_busylock ?: &qdisc_tx_busylock){+.-.}, at:
[<ffffffff84d5fa4f>] spin_lock include/linux/spinlock.h:317 [inline]
(dev->qdisc_tx_busylock ?: &qdisc_tx_busylock){+.-.}, at:
[<ffffffff84d5fa4f>] __dev_xmit_skb net/core/dev.c:3202 [inline]
(dev->qdisc_tx_busylock ?: &qdisc_tx_busylock){+.-.}, at:
[<ffffffff84d5fa4f>] __dev_queue_xmit+0x1f0f/0x25e0 net/core/dev.c:3493
which lock already depends on the new lock.
the existing dependency chain (in reverse order) is:
-> #1 (dev->qdisc_tx_busylock ?: &qdisc_tx_busylock){+.-.}:
lock_acquire+0x16f/0x430 kernel/locking/lockdep.c:3994
__raw_spin_lock include/linux/spinlock_api_smp.h:142 [inline]
_raw_spin_lock+0x2f/0x40 kernel/locking/spinlock.c:152
spin_lock include/linux/spinlock.h:317 [inline]
__dev_xmit_skb net/core/dev.c:3202 [inline]
__dev_queue_xmit+0x1f0f/0x25e0 net/core/dev.c:3493
dev_queue_xmit+0x18/0x20 net/core/dev.c:3558
neigh_hh_output include/net/neighbour.h:490 [inline]
neigh_output include/net/neighbour.h:498 [inline]
ip_finish_output2+0xddc/0x14a0 net/ipv4/ip_output.c:229
ip_finish_output+0x56d/0xc60 net/ipv4/ip_output.c:317
NF_HOOK_COND include/linux/netfilter.h:239 [inline]
ip_output+0x1e6/0x590 net/ipv4/ip_output.c:405
dst_output include/net/dst.h:462 [inline]
ip_local_out+0x97/0x170 net/ipv4/ip_output.c:124
ip_send_skb+0x3e/0xc0 net/ipv4/ip_output.c:1418
ip_push_pending_frames+0x64/0x80 net/ipv4/ip_output.c:1438
icmp_push_reply+0x38f/0x500 net/ipv4/icmp.c:394
__icmp_send+0x973/0x11f0 net/ipv4/icmp.c:742
ipv4_send_dest_unreach net/ipv4/route.c:1221 [inline]
ipv4_link_failure+0x432/0x7c0 net/ipv4/route.c:1228
dst_link_failure include/net/dst.h:445 [inline]
vti6_xmit net/ipv6/ip6_vti.c:522 [inline]
vti6_tnl_xmit+0x645/0x18a0 net/ipv6/ip6_vti.c:561
__netdev_start_xmit include/linux/netdevice.h:4033 [inline]
netdev_start_xmit include/linux/netdevice.h:4042 [inline]
xmit_one net/core/dev.c:3009 [inline]
dev_hard_start_xmit+0x18c/0x8b0 net/core/dev.c:3025
__dev_queue_xmit+0x1d95/0x25e0 net/core/dev.c:3525
dev_queue_xmit+0x18/0x20 net/core/dev.c:3558
neigh_direct_output+0x16/0x20 net/core/neighbour.c:1404
neigh_output include/net/neighbour.h:500 [inline]
ip_finish_output2+0x766/0x14a0 net/ipv4/ip_output.c:229
ip_finish_output+0x56d/0xc60 net/ipv4/ip_output.c:317
NF_HOOK_COND include/linux/netfilter.h:239 [inline]
ip_output+0x1e6/0x590 net/ipv4/ip_output.c:405
dst_output include/net/dst.h:462 [inline]
ip_local_out+0x97/0x170 net/ipv4/ip_output.c:124
ip_queue_xmit+0x7d7/0x1b10 net/ipv4/ip_output.c:504
__tcp_transmit_skb+0x172c/0x2fe0 net/ipv4/tcp_output.c:1130
tcp_transmit_skb net/ipv4/tcp_output.c:1146 [inline]
__tcp_retransmit_skb+0x536/0x1bb0 net/ipv4/tcp_output.c:2929
tcp_retransmit_skb+0x2e/0x230 net/ipv4/tcp_output.c:2943
tcp_retransmit_timer+0x81c/0x2560 net/ipv4/tcp_timer.c:494
tcp_write_timer_handler+0x479/0x7e0 net/ipv4/tcp_timer.c:579
tcp_write_timer+0xd8/0x180 net/ipv4/tcp_timer.c:597
call_timer_fn+0x161/0x670 kernel/time/timer.c:1279
expire_timers kernel/time/timer.c:1318 [inline]
__run_timers kernel/time/timer.c:1636 [inline]
__run_timers kernel/time/timer.c:1604 [inline]
run_timer_softirq+0x5b7/0x1520 kernel/time/timer.c:1649
__do_softirq+0x244/0x9a0 kernel/softirq.c:288
invoke_softirq kernel/softirq.c:368 [inline]
irq_exit+0x160/0x1b0 kernel/softirq.c:409
exiting_irq arch/x86/include/asm/apic.h:648 [inline]
smp_apic_timer_interrupt+0x146/0x5e0 arch/x86/kernel/apic/apic.c:1102
apic_timer_interrupt+0x96/0xa0 arch/x86/entry/entry_64.S:792
__read_once_size include/linux/compiler.h:183 [inline]
__sanitizer_cov_trace_pc+0x41/0x60 kernel/kcov.c:87
page_copy_sane lib/iov_iter.c:700 [inline]
copy_page_from_iter+0x30/0x720 lib/iov_iter.c:732
pipe_write+0x25a/0xe40 fs/pipe.c:448
call_write_iter include/linux/fs.h:1777 [inline]
new_sync_write fs/read_write.c:469 [inline]
__vfs_write+0x4a7/0x6b0 fs/read_write.c:482
vfs_write+0x198/0x500 fs/read_write.c:544
SYSC_write fs/read_write.c:590 [inline]
SyS_write+0xfd/0x230 fs/read_write.c:582
do_syscall_64+0x1e8/0x640 arch/x86/entry/common.c:292
entry_SYSCALL_64_after_hwframe+0x42/0xb7
-> #0 (_xmit_TUNNEL6#2){+.-.}:
check_prev_add kernel/locking/lockdep.c:1901 [inline]
check_prevs_add kernel/locking/lockdep.c:2018 [inline]
validate_chain kernel/locking/lockdep.c:2460 [inline]
__lock_acquire+0x2cb3/0x4620 kernel/locking/lockdep.c:3487
lock_acquire+0x16f/0x430 kernel/locking/lockdep.c:3994
__raw_spin_lock include/linux/spinlock_api_smp.h:142 [inline]
_raw_spin_lock+0x2f/0x40 kernel/locking/spinlock.c:152
spin_lock include/linux/spinlock.h:317 [inline]
__netif_tx_lock include/linux/netdevice.h:3530 [inline]
sch_direct_xmit+0x1fc/0x550 net/sched/sch_generic.c:184
__dev_xmit_skb net/core/dev.c:3218 [inline]
__dev_queue_xmit+0x1b6e/0x25e0 net/core/dev.c:3493
dev_queue_xmit+0x18/0x20 net/core/dev.c:3558
neigh_direct_output+0x16/0x20 net/core/neighbour.c:1404
neigh_output include/net/neighbour.h:500 [inline]
ip_finish_output2+0x766/0x14a0 net/ipv4/ip_output.c:229
ip_finish_output+0x56d/0xc60 net/ipv4/ip_output.c:317
NF_HOOK_COND include/linux/netfilter.h:239 [inline]
ip_output+0x1e6/0x590 net/ipv4/ip_output.c:405
dst_output include/net/dst.h:462 [inline]
ip_local_out+0x97/0x170 net/ipv4/ip_output.c:124
ip_queue_xmit+0x7d7/0x1b10 net/ipv4/ip_output.c:504
__tcp_transmit_skb+0x172c/0x2fe0 net/ipv4/tcp_output.c:1130
tcp_transmit_skb net/ipv4/tcp_output.c:1146 [inline]
__tcp_retransmit_skb+0x536/0x1bb0 net/ipv4/tcp_output.c:2929
tcp_retransmit_skb+0x2e/0x230 net/ipv4/tcp_output.c:2943
tcp_retransmit_timer+0x81c/0x2560 net/ipv4/tcp_timer.c:494
tcp_write_timer_handler+0x479/0x7e0 net/ipv4/tcp_timer.c:579
tcp_write_timer+0xd8/0x180 net/ipv4/tcp_timer.c:597
call_timer_fn+0x161/0x670 kernel/time/timer.c:1279
expire_timers kernel/time/timer.c:1318 [inline]
__run_timers kernel/time/timer.c:1636 [inline]
__run_timers kernel/time/timer.c:1604 [inline]
run_timer_softirq+0x5b7/0x1520 kernel/time/timer.c:1649
__do_softirq+0x244/0x9a0 kernel/softirq.c:288
invoke_softirq kernel/softirq.c:368 [inline]
irq_exit+0x160/0x1b0 kernel/softirq.c:409
exiting_irq arch/x86/include/asm/apic.h:648 [inline]
smp_apic_timer_interrupt+0x146/0x5e0 arch/x86/kernel/apic/apic.c:1102
apic_timer_interrupt+0x96/0xa0 arch/x86/entry/entry_64.S:792
arch_local_irq_restore arch/x86/include/asm/paravirt.h:779 [inline]
__raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:160
[inline]
_raw_spin_unlock_irqrestore+0x95/0xe0 kernel/locking/spinlock.c:192
spin_unlock_irqrestore include/linux/spinlock.h:372 [inline]
__wake_up_common_lock+0xe3/0x160 kernel/sched/wait.c:126
__wake_up_sync_key+0x19/0x20 kernel/sched/wait.c:203
pipe_write+0x915/0xe40 fs/pipe.c:485
call_write_iter include/linux/fs.h:1777 [inline]
new_sync_write fs/read_write.c:469 [inline]
__vfs_write+0x4a7/0x6b0 fs/read_write.c:482
vfs_write+0x198/0x500 fs/read_write.c:544
SYSC_write fs/read_write.c:590 [inline]
SyS_write+0xfd/0x230 fs/read_write.c:582
do_syscall_64+0x1e8/0x640 arch/x86/entry/common.c:292
entry_SYSCALL_64_after_hwframe+0x42/0xb7
other info that might help us debug this:
Possible unsafe locking scenario:
CPU0 CPU1
---- ----
lock(dev->qdisc_tx_busylock ?: &qdisc_tx_busylock);
lock(_xmit_TUNNEL6#2);
lock(dev->qdisc_tx_busylock ?:
&qdisc_tx_busylock);
lock(_xmit_TUNNEL6#2);
*** DEADLOCK ***
8 locks held by syz-executor.3/11891:
#0: (&pipe->mutex/1){+.+.}, at: [<ffffffff818f9371>] pipe_lock_nested
fs/pipe.c:67 [inline]
#0: (&pipe->mutex/1){+.+.}, at: [<ffffffff818f9371>] pipe_lock
fs/pipe.c:75 [inline]
#0: (&pipe->mutex/1){+.+.}, at: [<ffffffff818f9371>]
pipe_wait+0x181/0x1a0 fs/pipe.c:123
#1: (((&icsk->icsk_retransmit_timer))){+.-.}, at: [<ffffffff814fe138>]
lockdep_copy_map include/linux/lockdep.h:174 [inline]
#1: (((&icsk->icsk_retransmit_timer))){+.-.}, at: [<ffffffff814fe138>]
call_timer_fn+0xc8/0x670 kernel/time/timer.c:1269
#2: (slock-AF_INET){+.-.}, at: [<ffffffff852a1342>] spin_lock
include/linux/spinlock.h:317 [inline]
#2: (slock-AF_INET){+.-.}, at: [<ffffffff852a1342>]
tcp_write_timer+0x22/0x180 net/ipv4/tcp_timer.c:595
#3: (rcu_read_lock){....}, at: [<ffffffff8521f060>] sock_net
include/net/sock.h:2333 [inline]
#3: (rcu_read_lock){....}, at: [<ffffffff8521f060>]
ip_queue_xmit+0x40/0x1b10 net/ipv4/ip_output.c:429
#4: (rcu_read_lock_bh){....}, at: [<ffffffff852199d6>]
lwtunnel_xmit_redirect include/net/lwtunnel.h:92 [inline]
#4: (rcu_read_lock_bh){....}, at: [<ffffffff852199d6>]
ip_finish_output2+0x256/0x14a0 net/ipv4/ip_output.c:213
#5: (rcu_read_lock_bh){....}, at: [<ffffffff84d5dd22>]
__dev_queue_xmit+0x1e2/0x25e0 net/core/dev.c:3459
#6: (dev->qdisc_tx_busylock ?: &qdisc_tx_busylock){+.-.}, at:
[<ffffffff84d5fa4f>] spin_lock include/linux/spinlock.h:317 [inline]
#6: (dev->qdisc_tx_busylock ?: &qdisc_tx_busylock){+.-.}, at:
[<ffffffff84d5fa4f>] __dev_xmit_skb net/core/dev.c:3202 [inline]
#6: (dev->qdisc_tx_busylock ?: &qdisc_tx_busylock){+.-.}, at:
[<ffffffff84d5fa4f>] __dev_queue_xmit+0x1f0f/0x25e0 net/core/dev.c:3493
#7: (dev->qdisc_running_key ?: &qdisc_running_key){+...}, at:
[<ffffffff84d60138>] dev_queue_xmit+0x18/0x20 net/core/dev.c:3558
stack backtrace:
CPU: 1 PID: 11891 Comm: syz-executor.3 Not tainted 4.14.154 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS
Google 01/01/2011
Call Trace:
<IRQ>
__dump_stack lib/dump_stack.c:17 [inline]
dump_stack+0x142/0x197 lib/dump_stack.c:58
print_circular_bug.isra.0.cold+0x1cc/0x28f kernel/locking/lockdep.c:1258
check_prev_add kernel/locking/lockdep.c:1901 [inline]
check_prevs_add kernel/locking/lockdep.c:2018 [inline]
validate_chain kernel/locking/lockdep.c:2460 [inline]
__lock_acquire+0x2cb3/0x4620 kernel/locking/lockdep.c:3487
lock_acquire+0x16f/0x430 kernel/locking/lockdep.c:3994
__raw_spin_lock include/linux/spinlock_api_smp.h:142 [inline]
_raw_spin_lock+0x2f/0x40 kernel/locking/spinlock.c:152
spin_lock include/linux/spinlock.h:317 [inline]
__netif_tx_lock include/linux/netdevice.h:3530 [inline]
sch_direct_xmit+0x1fc/0x550 net/sched/sch_generic.c:184
__dev_xmit_skb net/core/dev.c:3218 [inline]
__dev_queue_xmit+0x1b6e/0x25e0 net/core/dev.c:3493
dev_queue_xmit+0x18/0x20 net/core/dev.c:3558
neigh_direct_output+0x16/0x20 net/core/neighbour.c:1404
neigh_output include/net/neighbour.h:500 [inline]
ip_finish_output2+0x766/0x14a0 net/ipv4/ip_output.c:229
ip_finish_output+0x56d/0xc60 net/ipv4/ip_output.c:317
NF_HOOK_COND include/linux/netfilter.h:239 [inline]
ip_output+0x1e6/0x590 net/ipv4/ip_output.c:405
kobject: 'loop4' (ffff8880a4b0a260): kobject_uevent_env
dst_output include/net/dst.h:462 [inline]
ip_local_out+0x97/0x170 net/ipv4/ip_output.c:124
ip_queue_xmit+0x7d7/0x1b10 net/ipv4/ip_output.c:504
kobject: 'loop4' (ffff8880a4b0a260): fill_kobj_path: path
= '/devices/virtual/block/loop4'
__tcp_transmit_skb+0x172c/0x2fe0 net/ipv4/tcp_output.c:1130
tcp_transmit_skb net/ipv4/tcp_output.c:1146 [inline]
__tcp_retransmit_skb+0x536/0x1bb0 net/ipv4/tcp_output.c:2929
tcp_retransmit_skb+0x2e/0x230 net/ipv4/tcp_output.c:2943
tcp_retransmit_timer+0x81c/0x2560 net/ipv4/tcp_timer.c:494
tcp_write_timer_handler+0x479/0x7e0 net/ipv4/tcp_timer.c:579
tcp_write_timer+0xd8/0x180 net/ipv4/tcp_timer.c:597
call_timer_fn+0x161/0x670 kernel/time/timer.c:1279
expire_timers kernel/time/timer.c:1318 [inline]
__run_timers kernel/time/timer.c:1636 [inline]
__run_timers kernel/time/timer.c:1604 [inline]
run_timer_softirq+0x5b7/0x1520 kernel/time/timer.c:1649
__do_softirq+0x244/0x9a0 kernel/softirq.c:288
invoke_softirq kernel/softirq.c:368 [inline]
irq_exit+0x160/0x1b0 kernel/softirq.c:409
exiting_irq arch/x86/include/asm/apic.h:648 [inline]
smp_apic_timer_interrupt+0x146/0x5e0 arch/x86/kernel/apic/apic.c:1102
apic_timer_interrupt+0x96/0xa0 arch/x86/entry/entry_64.S:792
</IRQ>
RIP: 0010:arch_local_irq_restore arch/x86/include/asm/paravirt.h:779
[inline]
RIP: 0010:__raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:160
[inline]
RIP: 0010:_raw_spin_unlock_irqrestore+0x95/0xe0
kernel/locking/spinlock.c:192
RSP: 0018:ffff8881b188fb50 EFLAGS: 00000282 ORIG_RAX: ffffffffffffff10
RAX: 1ffffffff0ee2d21 RBX: 0000000000000282 RCX: 1ffff110130a91bc
RDX: dffffc0000000000 RSI: ffff888098548dc0 RDI: 0000000000000282
RBP: ffff8881b188fb60 R08: ffff888098548540 R09: ffff888098548de0
kobject: 'loop4' (ffff8880a4b0a260): kobject_uevent_env
R10: 0000000000000000 R11: 0000000000000000 R12: ffff8880a94a7ac0
R13: 0000000000000001 R14: 0000000000000001 R15: 0000000000000041
spin_unlock_irqrestore include/linux/spinlock.h:372 [inline]
__wake_up_common_lock+0xe3/0x160 kernel/sched/wait.c:126
__wake_up_sync_key+0x19/0x20 kernel/sched/wait.c:203
kobject: 'loop4' (ffff8880a4b0a260): fill_kobj_path: path
= '/devices/virtual/block/loop4'
pipe_write+0x915/0xe40 fs/pipe.c:485
call_write_iter include/linux/fs.h:1777 [inline]
new_sync_write fs/read_write.c:469 [inline]
__vfs_write+0x4a7/0x6b0 fs/read_write.c:482
vfs_write+0x198/0x500 fs/read_write.c:544
SYSC_write fs/read_write.c:590 [inline]
SyS_write+0xfd/0x230 fs/read_write.c:582
do_syscall_64+0x1e8/0x640 arch/x86/entry/common.c:292
entry_SYSCALL_64_after_hwframe+0x42/0xb7
RIP: 0033:0x45a669
RSP: 002b:00007fd97acaac78 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 000000000045a669
RDX: 0000000041395527 RSI: 0000000020000340 RDI: 0000000000000006
RBP: 000000000075bfc8 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007fd97acab6d4
R13: 00000000004c7160 R14: 00000000004e26b8 R15: 00000000ffffffff
kobject: 'loop1' (ffff8880a4a049a0): kobject_uevent_env
kobject: 'loop1' (ffff8880a4a049a0): fill_kobj_path: path
= '/devices/virtual/block/loop1'
kobject: 'loop3' (ffff8880a4ad21e0): kobject_uevent_env
kobject: 'loop3' (ffff8880a4ad21e0): fill_kobj_path: path
= '/devices/virtual/block/loop3'
net_ratelimit: 25 callbacks suppressed
TCP: out of memory -- consider tuning tcp_mem
TCP: out of memory -- consider tuning tcp_mem
kobject: 'loop2' (ffff8880a4a572a0): kobject_uevent_env
kobject: 'loop2' (ffff8880a4a572a0): fill_kobj_path: path
= '/devices/virtual/block/loop2'
kobject: 'loop5' (ffff8880a4b422e0): kobject_uevent_env
kobject: 'loop5' (ffff8880a4b422e0): fill_kobj_path: path
= '/devices/virtual/block/loop5'
TCP: out of memory -- consider tuning tcp_mem
TCP: out of memory -- consider tuning tcp_mem
kobject: 'loop0' (ffff88805cea2f60): kobject_uevent_env
kobject: 'loop0' (ffff88805cea2f60): fill_kobj_path: path
= '/devices/virtual/block/loop0'
kobject: 'loop4' (ffff8880a4b0a260): kobject_uevent_env
kobject: 'loop4' (ffff8880a4b0a260): fill_kobj_path: path
= '/devices/virtual/block/loop4'
TCP: out of memory -- consider tuning tcp_mem
TCP: out of memory -- consider tuning tcp_mem
TCP: out of memory -- consider tuning tcp_mem
kobject: 'loop5' (ffff8880a4b422e0): kobject_uevent_env
kobject: 'loop5' (ffff8880a4b422e0): fill_kobj_path: path
= '/devices/virtual/block/loop5'
kobject: 'loop2' (ffff8880a4a572a0): kobject_uevent_env
kobject: 'loop2' (ffff8880a4a572a0): fill_kobj_path: path
= '/devices/virtual/block/loop2'
kobject: 'loop4' (ffff8880a4b0a260): kobject_uevent_env
kobject: 'loop4' (ffff8880a4b0a260): fill_kobj_path: path
= '/devices/virtual/block/loop4'
kobject: 'loop2' (ffff8880a4a572a0): kobject_uevent_env
kobject: 'loop2' (ffff8880a4a572a0): fill_kobj_path: path
= '/devices/virtual/block/loop2'
kobject: 'loop5' (ffff8880a4b422e0): kobject_uevent_env
kobject: 'loop5' (ffff8880a4b422e0): fill_kobj_path: path
= '/devices/virtual/block/loop5'
kobject: 'loop0' (ffff88805cea2f60): kobject_uevent_env
kobject: 'loop0' (ffff88805cea2f60): fill_kobj_path: path
= '/devices/virtual/block/loop0'
TCP: out of memory -- consider tuning tcp_mem
kobject: 'loop2' (ffff8880a4a572a0): kobject_uevent_env
kobject: 'loop2' (ffff8880a4a572a0): fill_kobj_path: path
= '/devices/virtual/block/loop2'
kobject: 'loop4' (ffff8880a4b0a260): kobject_uevent_env
kobject: 'loop4' (ffff8880a4b0a260): fill_kobj_path: path
= '/devices/virtual/block/loop4'
kobject: 'loop5' (ffff8880a4b422e0): kobject_uevent_env
kobject: 'loop5' (ffff8880a4b422e0): fill_kobj_path: path
= '/devices/virtual/block/loop5'
kobject: 'loop1' (ffff8880a4a049a0): kobject_uevent_env
kobject: 'loop1' (ffff8880a4a049a0): fill_kobj_path: path
= '/devices/virtual/block/loop1'
kobject: 'loop3' (ffff8880a4ad21e0): kobject_uevent_env
kobject: 'loop3' (ffff8880a4ad21e0): fill_kobj_path: path
= '/devices/virtual/block/loop3'
TCP: out of memory -- consider tuning tcp_mem
kobject: 'loop5' (ffff8880a4b422e0): kobject_uevent_env
TCP: out of memory -- consider tuning tcp_mem
kobject: 'loop5' (ffff8880a4b422e0): fill_kobj_path: path
= '/devices/virtual/block/loop5'
kobject: 'loop0' (ffff88805cea2f60): kobject_uevent_env
kobject: 'loop0' (ffff88805cea2f60): fill_kobj_path: path
= '/devices/virtual/block/loop0'
kobject: 'loop2' (ffff8880a4a572a0): kobject_uevent_env
kobject: 'loop2' (ffff8880a4a572a0): fill_kobj_path: path
= '/devices/virtual/block/loop2'
kobject: 'loop4' (ffff8880a4b0a260): kobject_uevent_env
kobject: 'loop4' (ffff8880a4b0a260): fill_kobj_path: path
= '/devices/virtual/block/loop4'
kobject: 'loop4' (ffff8880a4b0a260): kobject_uevent_env
kobject: 'loop4' (ffff8880a4b0a260): fill_kobj_path: path
= '/devices/virtual/block/loop4'
kobject: 'loop2' (ffff8880a4a572a0): kobject_uevent_env
kobject: 'loop2' (ffff8880a4a572a0): fill_kobj_path: path
= '/devices/virtual/block/loop2'
kobject: 'loop5' (ffff8880a4b422e0): kobject_uevent_env
kobject: 'loop5' (ffff8880a4b422e0): fill_kobj_path: path
= '/devices/virtual/block/loop5'
kobject: 'loop0' (ffff88805cea2f60): kobject_uevent_env
kobject: 'loop0' (ffff88805cea2f60): fill_kobj_path: path
= '/devices/virtual/block/loop0'
kobject: 'loop2' (ffff8880a4a572a0): kobject_uevent_env
kobject: 'loop2' (ffff8880a4a572a0): fill_kobj_path: path
= '/devices/virtual/block/loop2'
kobject: 'loop4' (ffff8880a4b0a260): kobject_uevent_env
kobject: 'loop4' (ffff8880a4b0a260): fill_kobj_path: path
= '/devices/virtual/block/loop4'
kobject: 'loop1' (ffff8880a4a049a0): kobject_uevent_env
kobject: 'loop1' (ffff8880a4a049a0): fill_kobj_path: path
= '/devices/virtual/block/loop1'
kobject: 'loop3' (ffff8880a4ad21e0): kobject_uevent_env
kobject: 'loop3' (ffff8880a4ad21e0): fill_kobj_path: path
= '/devices/virtual/block/loop3'
kobject: 'loop2' (ffff8880a4a572a0): kobject_uevent_env
kobject: 'loop2' (ffff8880a4a572a0): fill_kobj_path: path
= '/devices/virtual/block/loop2'
kobject: 'loop5' (ffff8880a4b422e0): kobject_uevent_env
kobject: 'loop5' (ffff8880a4b422e0): fill_kobj_path: path
= '/devices/virtual/block/loop5'
kobject: 'loop4' (ffff8880a4b0a260): kobject_uevent_env
kobject: 'loop4' (ffff8880a4b0a260): fill_kobj_path: path
= '/devices/virtual/block/loop4'
kobject: 'loop0' (ffff88805cea2f60): kobject_uevent_env
kobject: 'loop0' (ffff88805cea2f60): fill_kobj_path: path
= '/devices/virtual/block/loop0'
kobject: 'loop1' (ffff8880a4a049a0): kobject_uevent_env
kobject: 'loop1' (ffff8880a4a049a0): fill_kobj_path: path
= '/devices/virtual/block/loop1'
kobject: 'loop1' (ffff8880a4a049a0): kobject_uevent_env
kobject: 'loop1' (ffff8880a4a049a0): fill_kobj_path: path
= '/devices/virtual/block/loop1'
kobject: 'loop2' (ffff8880a4a572a0): kobject_uevent_env
kobject: 'loop2' (ffff8880a4a572a0): fill_kobj_path: path
= '/devices/virtual/block/loop2'
kobject: 'loop4' (ffff8880a4b0a260): kobject_uevent_env
kobject: 'loop4' (ffff8880a4b0a260): fill_kobj_path: path
= '/devices/virtual/block/loop4'
kobject: 'loop0' (ffff88805cea2f60): kobject_uevent_env
kobject: 'loop0' (ffff88805cea2f60): fill_kobj_path: path
= '/devices/virtual/block/loop0'
kobject: 'loop5' (ffff8880a4b422e0): kobject_uevent_env
kobject: 'loop5' (ffff8880a4b422e0): fill_kobj_path: path
= '/devices/virtual/block/loop5'
kobject: 'loop1' (ffff8880a4a049a0): kobject_uevent_env
kobject: 'loop1' (ffff8880a4a049a0): fill_kobj_path: path
= '/devices/virtual/block/loop1'
kobject: 'loop2' (ffff8880a4a572a0): kobject_uevent_env
kobject: 'loop2' (ffff8880a4a572a0): fill_kobj_path: path
= '/devices/virtual/block/loop2'
kobject: 'loop3' (ffff8880a4ad21e0): kobject_uevent_env
kobject: 'loop3' (ffff8880a4ad21e0): fill_kobj_path: path
= '/devices/virtual/block/loop3'
kobject: 'loop1' (ffff8880a4a049a0): kobject_uevent_env
kobject: 'loop1' (ffff8880a4a049a0): fill_kobj_path: path
= '/devices/virtual/block/loop1'
kobject: 'loop5' (ffff8880a4b422e0): kobject_uevent_env
kobject: 'loop5' (ffff8880a4b422e0): fill_kobj_path: path
= '/devices/virtual/block/loop5'
kobject: 'loop2' (ffff8880a4a572a0): kobject_uevent_env
kobject: 'loop2' (ffff8880a4a572a0): fill_kobj_path: path
= '/devices/virtual/block/loop2'
kobject: 'loop4' (ffff8880a4b0a260): kobject_uevent_env
kobject: 'loop4' (ffff8880a4b0a260): fill_kobj_path: path
= '/devices/virtual/block/loop4'
kobject: 'loop3' (ffff8880a4ad21e0): kobject_uevent_env
kobject: 'loop3' (ffff8880a4ad21e0): fill_kobj_path: path
= '/devices/virtual/block/loop3'
kobject: 'loop0' (ffff88805cea2f60): kobject_uevent_env
kobject: 'loop0' (ffff88805cea2f60): fill_kobj_path: path
= '/devices/virtual/block/loop0'
kobject: 'loop5' (ffff8880a4b422e0): kobject_uevent_env
kobject: 'loop5' (ffff8880a4b422e0): fill_kobj_path: path
= '/devices/virtual/block/loop5'
kobject: 'loop1' (ffff8880a4a049a0): kobject_uevent_env
kobject: 'loop1' (ffff8880a4a049a0): fill_kobj_path: path
= '/devices/virtual/block/loop1'
kobject: 'loop2' (ffff8880a4a572a0): kobject_uevent_env
kobject: 'loop2' (ffff8880a4a572a0): fill_kobj_path: path
= '/devices/virtual/block/loop2'
kobject: 'loop0' (ffff88805cea2f60): kobject_uevent_env
kobject: 'loop0' (ffff88805cea2f60): fill_kobj_path: path
= '/devices/virtual/block/loop0'
kobject: 'loop3' (ffff8880a4ad21e0): kobject_uevent_env
kobject: 'loop3' (ffff8880a4ad21e0): fill_kobj_path: path
= '/devices/virtual/block/loop3'
kobject: 'loop5' (ffff8880a4b422e0): kobject_uevent_env
kobject: 'loop5' (ffff8880a4b422e0): fill_kobj_path: path
= '/devices/virtual/block/loop5'
kobject: 'loop4' (ffff8880a4b0a260): kobject_uevent_env
kobject: 'loop4' (ffff8880a4b0a260): fill_kobj_path: path
= '/devices/virtual/block/loop4'
kobject: 'loop2' (ffff8880a4a572a0): kobject_uevent_env
kobject: 'loop2' (ffff8880a4a572a0): fill_kobj_path: path
= '/devices/virtual/block/loop2'
kobject: 'loop1' (ffff8880a4a049a0): kobject_uevent_env
kobject: 'loop1' (ffff8880a4a049a0): fill_kobj_path: path
= '/devices/virtual/block/loop1'
kobject: 'loop0' (ffff88805cea2f60): kobject_uevent_env
kobject: 'loop0' (ffff88805cea2f60): fill_kobj_path: path
= '/devices/virtual/block/loop0'
kobject: 'loop3' (ffff8880a4ad21e0): kobject_uevent_env
kobject: 'loop3' (ffff8880a4ad21e0): fill_kobj_path: path
= '/devices/virtual/block/loop3'
kobject: 'loop1' (ffff8880a4a049a0): kobject_uevent_env
kobject: 'loop1' (ffff8880a4a049a0): fill_kobj_path: path
= '/devices/virtual/block/loop1'
kobject: 'loop5' (ffff8880a4b422e0): kobject_uevent_env
kobject: 'loop5' (ffff8880a4b422e0): fill_kobj_path: path
= '/devices/virtual/block/loop5'
kobject: 'loop3' (ffff8880a4ad21e0): kobject_uevent_env
kobject: 'loop3' (ffff8880a4ad21e0): fill_kobj_path: path
= '/devices/virtual/block/loop3'
kobject: 'loop2' (ffff8880a4a572a0): kobject_uevent_env
kobject: 'loop2' (ffff8880a4a572a0): fill_kobj_path: path
= '/devices/virtual/block/loop2'
kobject: 'loop4' (ffff8880a4b0a260): kobject_uevent_env
kobject: 'loop4' (ffff8880a4b0a260): fill_kobj_path: path
= '/devices/virtual/block/loop4'
kobject: 'loop1' (ffff8880a4a049a0): kobject_uevent_env
kobject: 'loop1' (ffff8880a4a049a0): fill_kobj_path: path
= '/devices/virtual/block/loop1'
kobject: 'loop0' (ffff88805cea2f60): kobject_uevent_env
kobject: 'loop0' (ffff88805cea2f60): fill_kobj_path: path
= '/devices/virtual/block/loop0'
kobject: 'loop5' (ffff8880a4b422e0): kobject_uevent_env
kobject: 'loop5' (ffff8880a4b422e0): fill_kobj_path: path
= '/devices/virtual/block/loop5'
kobject: 'loop2' (ffff8880a4a572a0): kobject_uevent_env
kobject: 'loop2' (ffff8880a4a572a0): fill_kobj_path: path
= '/devices/virtual/block/loop2'
kobject: 'loop5' (ffff8880a4b422e0): kobject_uevent_env
kobject: 'loop5' (ffff8880a4b422e0): fill_kobj_path: path
= '/devices/virtual/block/loop5'
kobject: 'loop4' (ffff8880a4b0a260): kobject_uevent_env
kobject: 'loop4' (ffff8880a4b0a260): fill_kobj_path: path
= '/devices/virtual/block/loop4'
kobject: 'loop2' (ffff8880a4a572a0): kobject_uevent_env
kobject: 'loop2' (ffff8880a4a572a0): fill_kobj_path: path
= '/devices/virtual/block/loop2'
kobject: 'loop1' (ffff8880a4a049a0): kobject_uevent_env
kobject: 'loop1' (ffff8880a4a049a0): fill_kobj_path: path
= '/devices/virtual/block/loop1'
kobject: 'loop5' (ffff8880a4b422e0): kobject_uevent_env
kobject: 'loop5' (ffff8880a4b422e0): fill_kobj_path: path
= '/devices/virtual/block/loop5'
kobject: 'loop3' (ffff8880a4ad21e0): kobject_uevent_env
kobject: 'loop3' (ffff8880a4ad21e0): fill_kobj_path: path
= '/devices/virtual/block/loop3'
kobject: 'loop4' (ffff8880a4b0a260): kobject_uevent_env
kobject: 'loop4' (ffff8880a4b0a260): fill_kobj_path: path
= '/devices/virtual/block/loop4'
kobject: 'loop0' (ffff88805cea2f60): kobject_uevent_env
kobject: 'loop0' (ffff88805cea2f60): fill_kobj_path: path
= '/devices/virtual/block/loop0'
kobject: 'loop2' (ffff8880a4a572a0): kobject_uevent_env
kobject: 'loop2' (ffff8880a4a572a0): fill_kobj_path: path
= '/devices/virtual/block/loop2'
kobject: 'loop1' (ffff8880a4a049a0): kobject_uevent_env
kobject: 'loop1' (ffff8880a4a049a0): fill_kobj_path: path
= '/devices/virtual/block/loop1'
kobject: 'loop5' (ffff8880a4b422e0): kobject_uevent_env
kobject: 'loop5' (ffff8880a4b422e0): fill_kobj_path: path
= '/devices/virtual/block/loop5'
kobject: 'loop4' (ffff8880a4b0a260): kobject_uevent_env
kobject: 'loop4' (ffff8880a4b0a260): fill_kobj_path: path
= '/devices/virtual/block/loop4'
kobject: 'loop1' (ffff8880a4a049a0): kobject_uevent_env
kobject: 'loop1' (ffff8880a4a049a0): fill_kobj_path: path
= '/devices/virtual/block/loop1'
kobject: 'loop5' (ffff8880a4b422e0): kobject_uevent_env
kobject: 'loop5' (ffff8880a4b422e0): fill_kobj_path: path
= '/devices/virtual/block/loop5'
kobject: 'loop3' (ffff8880a4ad21e0): kobject_uevent_env
kobject: 'loop3' (ffff8880a4ad21e0): fill_kobj_path: path
= '/devices/virtual/block/loop3'
kobject: 'loop2' (ffff8880a4a572a0): kobject_uevent_env
kobject: 'loop2' (ffff8880a4a572a0): fill_kobj_path: path
= '/devices/virtual/block/loop2'
kobject: 'loop2' (ffff8880a4a572a0): kobject_uevent_env
kobject: 'loop2' (ffff8880a4a572a0): fill_kobj_path: path
= '/devices/virtual/block/loop2'
net_ratelimit: 23 callbacks suppressed
protocol 88fb is buggy, dev hsr_slave_0
kobject: 'loop4' (ffff8880a4b0a260): kobject_uevent_env
protocol 88fb is buggy, dev hsr_slave_1
kobject: 'loop4' (ffff8880a4b0a260): fill_kobj_path: path
= '/devices/virtual/block/loop4'
protocol 88fb is buggy, dev hsr_slave_0
kobject: 'loop0' (ffff88805cea2f60): kobject_uevent_env
protocol 88fb is buggy, dev hsr_slave_1
protocol 88fb is buggy, dev hsr_slave_0
kobject: 'loop0' (ffff88805cea2f60): fill_kobj_path: path
= '/devices/virtual/block/loop0'
protocol 88fb is buggy, dev hsr_slave_1
protocol 88fb is buggy, dev hsr_slave_0
protocol 88fb is buggy, dev hsr_slave_1
kobject: 'loop1' (ffff8880a4a049a0): kobject_uevent_env
kobject: 'loop1' (ffff8880a4a049a0): fill_kobj_path: path
= '/devices/virtual/block/loop1'
kobject: 'loop2' (ffff8880a4a572a0): kobject_uevent_env
kobject: 'loop2' (ffff8880a4a572a0): fill_kobj_path: path
= '/devices/virtual/block/loop2'
kobject: 'loop1' (ffff8880a4a049a0): kobject_uevent_env
kobject: 'loop1' (ffff8880a4a049a0): fill_kobj_path: path
= '/devices/virtual/block/loop1'
kobject: 'loop4' (ffff8880a4b0a260): kobject_uevent_env
kobject: 'loop4' (ffff8880a4b0a260): fill_kobj_path: path
= '/devices/virtual/block/loop4'
kobject: 'loop5' (ffff8880a4b422e0): kobject_uevent_env
kobject: 'loop5' (ffff8880a4b422e0): fill_kobj_path: path
= '/devices/virtual/block/loop5'
kobject: 'loop3' (ffff8880a4ad21e0): kobject_uevent_env
kobject: 'loop3' (ffff8880a4ad21e0): fill_kobj_path: path
= '/devices/virtual/block/loop3'
kobject: 'loop4' (ffff8880a4b0a260): kobject_uevent_env
kobject: 'loop4' (ffff8880a4b0a260): fill_kobj_path: path
= '/devices/virtual/block/loop4'
TCP: out of memory -- consider tuning tcp_mem
kobject: 'loop1' (ffff8880a4a049a0): kobject_uevent_env
kobject: 'loop1' (ffff8880a4a049a0): fill_kobj_path: path
= '/devices/virtual/block/loop1'
kobject: 'loop2' (ffff8880a4a572a0): kobject_uevent_env
kobject: 'loop2' (ffff8880a4a572a0): fill_kobj_path: path
= '/devices/virtual/block/loop2'
TCP: out of memory -- consider tuning tcp_mem
kobject: 'loop0' (ffff88805cea2f60): kobject_uevent_env
kobject: 'loop0' (ffff88805cea2f60): fill_kobj_path: path
= '/devices/virtual/block/loop0'
kobject: 'loop2' (ffff8880a4a572a0): kobject_uevent_env
kobject: 'loop2' (ffff8880a4a572a0): fill_kobj_path: path
= '/devices/virtual/block/loop2'
kobject: 'loop1' (ffff8880a4a049a0): kobject_uevent_env
kobject: 'loop1' (ffff8880a4a049a0): fill_kobj_path: path
= '/devices/virtual/block/loop1'
kobject: 'loop4' (ffff8880a4b0a260): kobject_uevent_env
kobject: 'loop4' (ffff8880a4b0a260): fill_kobj_path: path
= '/devices/virtual/block/loop4'
kobject: 'loop2' (ffff8880a4a572a0): kobject_uevent_env
kobject: 'loop2' (ffff8880a4a572a0): fill_kobj_path: path
= '/devices/virtual/block/loop2'
kobject: 'loop3' (ffff8880a4ad21e0): kobject_uevent_env
kobject: 'loop3' (ffff8880a4ad21e0): fill_kobj_path: path
= '/devices/virtual/block/loop3'
kobject: 'loop5' (ffff8880a4b422e0): kobject_uevent_env
kobject: 'loop5' (ffff8880a4b422e0): fill_kobj_path: path
= '/devices/virtual/block/loop5'
kobject: 'loop0' (ffff88805cea2f60): kobject_uevent_env
kobject: 'loop0' (ffff88805cea2f60): fill_kobj_path: path
= '/devices/virtual/block/loop0'
kobject: 'loop1' (ffff8880a4a049a0): kobject_uevent_env
kobject: 'loop1' (ffff8880a4a049a0): fill_kobj_path: path
= '/devices/virtual/block/loop1'
kobject: 'loop3' (ffff8880a4ad21e0): kobject_uevent_env
kobject: 'loop3' (ffff8880a4ad21e0): fill_kobj_path: path
= '/devices/virtual/block/loop3'
kobject: 'loop1' (ffff8880a4a049a0): kobject_uevent_env
kobject: 'loop1' (ffff8880a4a049a0): fill_kobj_path: path
= '/devices/virtual/block/loop1'
kobject: 'loop3' (ffff8880a4ad21e0): kobject_uevent_env
kobject: 'loop3' (ffff8880a4ad21e0): fill_kobj_path: path
= '/devices/virtual/block/loop3'
kobject: 'loop0' (ffff88805cea2f60): kobject_uevent_env
kobject: 'loop0' (ffff88805cea2f60): fill_kobj_path: path
= '/devices/virtual/block/loop0'
kobject: 'loop5' (ffff8880a4b422e0): kobject_uevent_env
kobject: 'loop5' (ffff8880a4b422e0): fill_kobj_path: path
= '/devices/virtual/block/loop5'
kobject: 'loop2' (ffff8880a4a572a0): kobject_uevent_env
kobject: 'loop2' (ffff8880a4a572a0): fill_kobj_path: path
= '/devices/virtual/block/loop2'
kobject: 'loop3' (ffff8880a4ad21e0): kobject_uevent_env
kobject: 'loop3' (ffff8880a4ad21e0): fill_kobj_path: path
= '/devices/virtual/block/loop3'
kobject: 'loop0' (ffff88805cea2f60): kobject_uevent_env
kobject: 'loop0' (ffff88805cea2f60): fill_kobj_path: path
= '/devices/virtual/block/loop0'
kobject: 'loop1' (ffff8880a4a049a0): kobject_uevent_env
kobject: 'loop1' (ffff8880a4a049a0): fill_kobj_path: path
= '/devices/virtual/block/loop1'
kobject: 'loop4' (ffff8880a4b0a260): kobject_uevent_env
kobject: 'loop4' (ffff8880a4b0a260): fill_kobj_path: path
= '/devices/virtual/block/loop4'
---
This bug is generated by a bot. It may contain errors.
See https://goo.gl/tpsmEJ for more information about syzbot.
syzbot engineers can be reached at syzk...@googlegroups.com.
syzbot will keep track of this bug report. See:
https://goo.gl/tpsmEJ#status for how to communicate with syzbot.
syzbot found the following crash on:
HEAD commit: 775d01b6 Linux 4.14.154
git tree: linux-4.14.y
console output: https://syzkaller.appspot.com/x/log.txt?x=151acb3ae00000
kernel config: https://syzkaller.appspot.com/x/.config?x=90a13857da9a45b6
dashboard link: https://syzkaller.appspot.com/bug?extid=fdad8205fa161e56cfa9
compiler: gcc (GCC) 9.0.0 20181231 (experimental)
Unfortunately, I don't have any reproducer for this crash yet.
IMPORTANT: if you fix the bug, please add the following tag to the commit:
Reported-by: syzbot+fdad82...@syzkaller.appspotmail.com
======================================================
WARNING: possible circular locking dependency detected
4.14.154 #0 Not tainted
------------------------------------------------------
syz-executor.3/11891 is trying to acquire lock:
(_xmit_TUNNEL6#2){+.-.}, at: [<ffffffff84e3cb5c>] spin_lock
include/linux/spinlock.h:317 [inline]
(_xmit_TUNNEL6#2){+.-.}, at: [<ffffffff84e3cb5c>] __netif_tx_lock
include/linux/netdevice.h:3530 [inline]
(_xmit_TUNNEL6#2){+.-.}, at: [<ffffffff84e3cb5c>]
sch_direct_xmit+0x1fc/0x550 net/sched/sch_generic.c:184
but task is already holding lock:
(dev->qdisc_tx_busylock ?: &qdisc_tx_busylock){+.-.}, at:
[<ffffffff84d5fa4f>] spin_lock include/linux/spinlock.h:317 [inline]
(dev->qdisc_tx_busylock ?: &qdisc_tx_busylock){+.-.}, at:
[<ffffffff84d5fa4f>] __dev_xmit_skb net/core/dev.c:3202 [inline]
(dev->qdisc_tx_busylock ?: &qdisc_tx_busylock){+.-.}, at:
[<ffffffff84d5fa4f>] __dev_queue_xmit+0x1f0f/0x25e0 net/core/dev.c:3493
which lock already depends on the new lock.
the existing dependency chain (in reverse order) is:
-> #1 (dev->qdisc_tx_busylock ?: &qdisc_tx_busylock){+.-.}:
lock_acquire+0x16f/0x430 kernel/locking/lockdep.c:3994
__raw_spin_lock include/linux/spinlock_api_smp.h:142 [inline]
_raw_spin_lock+0x2f/0x40 kernel/locking/spinlock.c:152
spin_lock include/linux/spinlock.h:317 [inline]
__dev_xmit_skb net/core/dev.c:3202 [inline]
__dev_queue_xmit+0x1f0f/0x25e0 net/core/dev.c:3493
dev_queue_xmit+0x18/0x20 net/core/dev.c:3558
neigh_hh_output include/net/neighbour.h:490 [inline]
neigh_output include/net/neighbour.h:498 [inline]
ip_finish_output2+0xddc/0x14a0 net/ipv4/ip_output.c:229
ip_finish_output+0x56d/0xc60 net/ipv4/ip_output.c:317
NF_HOOK_COND include/linux/netfilter.h:239 [inline]
ip_output+0x1e6/0x590 net/ipv4/ip_output.c:405
dst_output include/net/dst.h:462 [inline]
ip_local_out+0x97/0x170 net/ipv4/ip_output.c:124
ip_send_skb+0x3e/0xc0 net/ipv4/ip_output.c:1418
ip_push_pending_frames+0x64/0x80 net/ipv4/ip_output.c:1438
icmp_push_reply+0x38f/0x500 net/ipv4/icmp.c:394
__icmp_send+0x973/0x11f0 net/ipv4/icmp.c:742
ipv4_send_dest_unreach net/ipv4/route.c:1221 [inline]
ipv4_link_failure+0x432/0x7c0 net/ipv4/route.c:1228
dst_link_failure include/net/dst.h:445 [inline]
vti6_xmit net/ipv6/ip6_vti.c:522 [inline]
vti6_tnl_xmit+0x645/0x18a0 net/ipv6/ip6_vti.c:561
__netdev_start_xmit include/linux/netdevice.h:4033 [inline]
netdev_start_xmit include/linux/netdevice.h:4042 [inline]
xmit_one net/core/dev.c:3009 [inline]
dev_hard_start_xmit+0x18c/0x8b0 net/core/dev.c:3025
__dev_queue_xmit+0x1d95/0x25e0 net/core/dev.c:3525
dev_queue_xmit+0x18/0x20 net/core/dev.c:3558
neigh_direct_output+0x16/0x20 net/core/neighbour.c:1404
neigh_output include/net/neighbour.h:500 [inline]
ip_finish_output2+0x766/0x14a0 net/ipv4/ip_output.c:229
ip_finish_output+0x56d/0xc60 net/ipv4/ip_output.c:317
NF_HOOK_COND include/linux/netfilter.h:239 [inline]
ip_output+0x1e6/0x590 net/ipv4/ip_output.c:405
dst_output include/net/dst.h:462 [inline]
ip_local_out+0x97/0x170 net/ipv4/ip_output.c:124
ip_queue_xmit+0x7d7/0x1b10 net/ipv4/ip_output.c:504
__tcp_transmit_skb+0x172c/0x2fe0 net/ipv4/tcp_output.c:1130
tcp_transmit_skb net/ipv4/tcp_output.c:1146 [inline]
__tcp_retransmit_skb+0x536/0x1bb0 net/ipv4/tcp_output.c:2929
tcp_retransmit_skb+0x2e/0x230 net/ipv4/tcp_output.c:2943
tcp_retransmit_timer+0x81c/0x2560 net/ipv4/tcp_timer.c:494
tcp_write_timer_handler+0x479/0x7e0 net/ipv4/tcp_timer.c:579
tcp_write_timer+0xd8/0x180 net/ipv4/tcp_timer.c:597
call_timer_fn+0x161/0x670 kernel/time/timer.c:1279
expire_timers kernel/time/timer.c:1318 [inline]
__run_timers kernel/time/timer.c:1636 [inline]
__run_timers kernel/time/timer.c:1604 [inline]
run_timer_softirq+0x5b7/0x1520 kernel/time/timer.c:1649
__do_softirq+0x244/0x9a0 kernel/softirq.c:288
invoke_softirq kernel/softirq.c:368 [inline]
irq_exit+0x160/0x1b0 kernel/softirq.c:409
exiting_irq arch/x86/include/asm/apic.h:648 [inline]
smp_apic_timer_interrupt+0x146/0x5e0 arch/x86/kernel/apic/apic.c:1102
apic_timer_interrupt+0x96/0xa0 arch/x86/entry/entry_64.S:792
__read_once_size include/linux/compiler.h:183 [inline]
__sanitizer_cov_trace_pc+0x41/0x60 kernel/kcov.c:87
page_copy_sane lib/iov_iter.c:700 [inline]
copy_page_from_iter+0x30/0x720 lib/iov_iter.c:732
pipe_write+0x25a/0xe40 fs/pipe.c:448
call_write_iter include/linux/fs.h:1777 [inline]
new_sync_write fs/read_write.c:469 [inline]
__vfs_write+0x4a7/0x6b0 fs/read_write.c:482
vfs_write+0x198/0x500 fs/read_write.c:544
SYSC_write fs/read_write.c:590 [inline]
SyS_write+0xfd/0x230 fs/read_write.c:582
do_syscall_64+0x1e8/0x640 arch/x86/entry/common.c:292
entry_SYSCALL_64_after_hwframe+0x42/0xb7
-> #0 (_xmit_TUNNEL6#2){+.-.}:
check_prev_add kernel/locking/lockdep.c:1901 [inline]
check_prevs_add kernel/locking/lockdep.c:2018 [inline]
validate_chain kernel/locking/lockdep.c:2460 [inline]
__lock_acquire+0x2cb3/0x4620 kernel/locking/lockdep.c:3487
lock_acquire+0x16f/0x430 kernel/locking/lockdep.c:3994
__raw_spin_lock include/linux/spinlock_api_smp.h:142 [inline]
_raw_spin_lock+0x2f/0x40 kernel/locking/spinlock.c:152
spin_lock include/linux/spinlock.h:317 [inline]
__netif_tx_lock include/linux/netdevice.h:3530 [inline]
sch_direct_xmit+0x1fc/0x550 net/sched/sch_generic.c:184
__dev_xmit_skb net/core/dev.c:3218 [inline]
__dev_queue_xmit+0x1b6e/0x25e0 net/core/dev.c:3493
dev_queue_xmit+0x18/0x20 net/core/dev.c:3558
neigh_direct_output+0x16/0x20 net/core/neighbour.c:1404
neigh_output include/net/neighbour.h:500 [inline]
ip_finish_output2+0x766/0x14a0 net/ipv4/ip_output.c:229
ip_finish_output+0x56d/0xc60 net/ipv4/ip_output.c:317
NF_HOOK_COND include/linux/netfilter.h:239 [inline]
ip_output+0x1e6/0x590 net/ipv4/ip_output.c:405
dst_output include/net/dst.h:462 [inline]
ip_local_out+0x97/0x170 net/ipv4/ip_output.c:124
ip_queue_xmit+0x7d7/0x1b10 net/ipv4/ip_output.c:504
__tcp_transmit_skb+0x172c/0x2fe0 net/ipv4/tcp_output.c:1130
tcp_transmit_skb net/ipv4/tcp_output.c:1146 [inline]
__tcp_retransmit_skb+0x536/0x1bb0 net/ipv4/tcp_output.c:2929
tcp_retransmit_skb+0x2e/0x230 net/ipv4/tcp_output.c:2943
tcp_retransmit_timer+0x81c/0x2560 net/ipv4/tcp_timer.c:494
tcp_write_timer_handler+0x479/0x7e0 net/ipv4/tcp_timer.c:579
tcp_write_timer+0xd8/0x180 net/ipv4/tcp_timer.c:597
call_timer_fn+0x161/0x670 kernel/time/timer.c:1279
expire_timers kernel/time/timer.c:1318 [inline]
__run_timers kernel/time/timer.c:1636 [inline]
__run_timers kernel/time/timer.c:1604 [inline]
run_timer_softirq+0x5b7/0x1520 kernel/time/timer.c:1649
__do_softirq+0x244/0x9a0 kernel/softirq.c:288
invoke_softirq kernel/softirq.c:368 [inline]
irq_exit+0x160/0x1b0 kernel/softirq.c:409
exiting_irq arch/x86/include/asm/apic.h:648 [inline]
smp_apic_timer_interrupt+0x146/0x5e0 arch/x86/kernel/apic/apic.c:1102
apic_timer_interrupt+0x96/0xa0 arch/x86/entry/entry_64.S:792
arch_local_irq_restore arch/x86/include/asm/paravirt.h:779 [inline]
__raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:160
[inline]
_raw_spin_unlock_irqrestore+0x95/0xe0 kernel/locking/spinlock.c:192
spin_unlock_irqrestore include/linux/spinlock.h:372 [inline]
__wake_up_common_lock+0xe3/0x160 kernel/sched/wait.c:126
__wake_up_sync_key+0x19/0x20 kernel/sched/wait.c:203
pipe_write+0x915/0xe40 fs/pipe.c:485
call_write_iter include/linux/fs.h:1777 [inline]
new_sync_write fs/read_write.c:469 [inline]
__vfs_write+0x4a7/0x6b0 fs/read_write.c:482
vfs_write+0x198/0x500 fs/read_write.c:544
SYSC_write fs/read_write.c:590 [inline]
SyS_write+0xfd/0x230 fs/read_write.c:582
do_syscall_64+0x1e8/0x640 arch/x86/entry/common.c:292
entry_SYSCALL_64_after_hwframe+0x42/0xb7
other info that might help us debug this:
Possible unsafe locking scenario:
CPU0 CPU1
---- ----
lock(dev->qdisc_tx_busylock ?: &qdisc_tx_busylock);
lock(_xmit_TUNNEL6#2);
lock(dev->qdisc_tx_busylock ?:
&qdisc_tx_busylock);
lock(_xmit_TUNNEL6#2);
*** DEADLOCK ***
8 locks held by syz-executor.3/11891:
#0: (&pipe->mutex/1){+.+.}, at: [<ffffffff818f9371>] pipe_lock_nested
fs/pipe.c:67 [inline]
#0: (&pipe->mutex/1){+.+.}, at: [<ffffffff818f9371>] pipe_lock
fs/pipe.c:75 [inline]
#0: (&pipe->mutex/1){+.+.}, at: [<ffffffff818f9371>]
pipe_wait+0x181/0x1a0 fs/pipe.c:123
#1: (((&icsk->icsk_retransmit_timer))){+.-.}, at: [<ffffffff814fe138>]
lockdep_copy_map include/linux/lockdep.h:174 [inline]
#1: (((&icsk->icsk_retransmit_timer))){+.-.}, at: [<ffffffff814fe138>]
call_timer_fn+0xc8/0x670 kernel/time/timer.c:1269
#2: (slock-AF_INET){+.-.}, at: [<ffffffff852a1342>] spin_lock
include/linux/spinlock.h:317 [inline]
#2: (slock-AF_INET){+.-.}, at: [<ffffffff852a1342>]
tcp_write_timer+0x22/0x180 net/ipv4/tcp_timer.c:595
#3: (rcu_read_lock){....}, at: [<ffffffff8521f060>] sock_net
include/net/sock.h:2333 [inline]
#3: (rcu_read_lock){....}, at: [<ffffffff8521f060>]
ip_queue_xmit+0x40/0x1b10 net/ipv4/ip_output.c:429
#4: (rcu_read_lock_bh){....}, at: [<ffffffff852199d6>]
lwtunnel_xmit_redirect include/net/lwtunnel.h:92 [inline]
#4: (rcu_read_lock_bh){....}, at: [<ffffffff852199d6>]
ip_finish_output2+0x256/0x14a0 net/ipv4/ip_output.c:213
#5: (rcu_read_lock_bh){....}, at: [<ffffffff84d5dd22>]
__dev_queue_xmit+0x1e2/0x25e0 net/core/dev.c:3459
#6: (dev->qdisc_tx_busylock ?: &qdisc_tx_busylock){+.-.}, at:
[<ffffffff84d5fa4f>] spin_lock include/linux/spinlock.h:317 [inline]
#6: (dev->qdisc_tx_busylock ?: &qdisc_tx_busylock){+.-.}, at:
[<ffffffff84d5fa4f>] __dev_xmit_skb net/core/dev.c:3202 [inline]
#6: (dev->qdisc_tx_busylock ?: &qdisc_tx_busylock){+.-.}, at:
[<ffffffff84d5fa4f>] __dev_queue_xmit+0x1f0f/0x25e0 net/core/dev.c:3493
#7: (dev->qdisc_running_key ?: &qdisc_running_key){+...}, at:
[<ffffffff84d60138>] dev_queue_xmit+0x18/0x20 net/core/dev.c:3558
stack backtrace:
CPU: 1 PID: 11891 Comm: syz-executor.3 Not tainted 4.14.154 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS
Google 01/01/2011
Call Trace:
<IRQ>
__dump_stack lib/dump_stack.c:17 [inline]
dump_stack+0x142/0x197 lib/dump_stack.c:58
print_circular_bug.isra.0.cold+0x1cc/0x28f kernel/locking/lockdep.c:1258
check_prev_add kernel/locking/lockdep.c:1901 [inline]
check_prevs_add kernel/locking/lockdep.c:2018 [inline]
validate_chain kernel/locking/lockdep.c:2460 [inline]
__lock_acquire+0x2cb3/0x4620 kernel/locking/lockdep.c:3487
lock_acquire+0x16f/0x430 kernel/locking/lockdep.c:3994
__raw_spin_lock include/linux/spinlock_api_smp.h:142 [inline]
_raw_spin_lock+0x2f/0x40 kernel/locking/spinlock.c:152
spin_lock include/linux/spinlock.h:317 [inline]
__netif_tx_lock include/linux/netdevice.h:3530 [inline]
sch_direct_xmit+0x1fc/0x550 net/sched/sch_generic.c:184
__dev_xmit_skb net/core/dev.c:3218 [inline]
__dev_queue_xmit+0x1b6e/0x25e0 net/core/dev.c:3493
dev_queue_xmit+0x18/0x20 net/core/dev.c:3558
neigh_direct_output+0x16/0x20 net/core/neighbour.c:1404
neigh_output include/net/neighbour.h:500 [inline]
ip_finish_output2+0x766/0x14a0 net/ipv4/ip_output.c:229
ip_finish_output+0x56d/0xc60 net/ipv4/ip_output.c:317
NF_HOOK_COND include/linux/netfilter.h:239 [inline]
ip_output+0x1e6/0x590 net/ipv4/ip_output.c:405
kobject: 'loop4' (ffff8880a4b0a260): kobject_uevent_env
dst_output include/net/dst.h:462 [inline]
ip_local_out+0x97/0x170 net/ipv4/ip_output.c:124
ip_queue_xmit+0x7d7/0x1b10 net/ipv4/ip_output.c:504
kobject: 'loop4' (ffff8880a4b0a260): fill_kobj_path: path
= '/devices/virtual/block/loop4'
__tcp_transmit_skb+0x172c/0x2fe0 net/ipv4/tcp_output.c:1130
tcp_transmit_skb net/ipv4/tcp_output.c:1146 [inline]
__tcp_retransmit_skb+0x536/0x1bb0 net/ipv4/tcp_output.c:2929
tcp_retransmit_skb+0x2e/0x230 net/ipv4/tcp_output.c:2943
tcp_retransmit_timer+0x81c/0x2560 net/ipv4/tcp_timer.c:494
tcp_write_timer_handler+0x479/0x7e0 net/ipv4/tcp_timer.c:579
tcp_write_timer+0xd8/0x180 net/ipv4/tcp_timer.c:597
call_timer_fn+0x161/0x670 kernel/time/timer.c:1279
expire_timers kernel/time/timer.c:1318 [inline]
__run_timers kernel/time/timer.c:1636 [inline]
__run_timers kernel/time/timer.c:1604 [inline]
run_timer_softirq+0x5b7/0x1520 kernel/time/timer.c:1649
__do_softirq+0x244/0x9a0 kernel/softirq.c:288
invoke_softirq kernel/softirq.c:368 [inline]
irq_exit+0x160/0x1b0 kernel/softirq.c:409
exiting_irq arch/x86/include/asm/apic.h:648 [inline]
smp_apic_timer_interrupt+0x146/0x5e0 arch/x86/kernel/apic/apic.c:1102
apic_timer_interrupt+0x96/0xa0 arch/x86/entry/entry_64.S:792
</IRQ>
RIP: 0010:arch_local_irq_restore arch/x86/include/asm/paravirt.h:779
[inline]
RIP: 0010:__raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:160
[inline]
RIP: 0010:_raw_spin_unlock_irqrestore+0x95/0xe0
kernel/locking/spinlock.c:192
RSP: 0018:ffff8881b188fb50 EFLAGS: 00000282 ORIG_RAX: ffffffffffffff10
RAX: 1ffffffff0ee2d21 RBX: 0000000000000282 RCX: 1ffff110130a91bc
RDX: dffffc0000000000 RSI: ffff888098548dc0 RDI: 0000000000000282
RBP: ffff8881b188fb60 R08: ffff888098548540 R09: ffff888098548de0
kobject: 'loop4' (ffff8880a4b0a260): kobject_uevent_env
R10: 0000000000000000 R11: 0000000000000000 R12: ffff8880a94a7ac0
R13: 0000000000000001 R14: 0000000000000001 R15: 0000000000000041
spin_unlock_irqrestore include/linux/spinlock.h:372 [inline]
__wake_up_common_lock+0xe3/0x160 kernel/sched/wait.c:126
__wake_up_sync_key+0x19/0x20 kernel/sched/wait.c:203
kobject: 'loop4' (ffff8880a4b0a260): fill_kobj_path: path
= '/devices/virtual/block/loop4'
pipe_write+0x915/0xe40 fs/pipe.c:485
call_write_iter include/linux/fs.h:1777 [inline]
new_sync_write fs/read_write.c:469 [inline]
__vfs_write+0x4a7/0x6b0 fs/read_write.c:482
vfs_write+0x198/0x500 fs/read_write.c:544
SYSC_write fs/read_write.c:590 [inline]
SyS_write+0xfd/0x230 fs/read_write.c:582
do_syscall_64+0x1e8/0x640 arch/x86/entry/common.c:292
entry_SYSCALL_64_after_hwframe+0x42/0xb7
RIP: 0033:0x45a669
RSP: 002b:00007fd97acaac78 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 000000000045a669
RDX: 0000000041395527 RSI: 0000000020000340 RDI: 0000000000000006
RBP: 000000000075bfc8 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007fd97acab6d4
R13: 00000000004c7160 R14: 00000000004e26b8 R15: 00000000ffffffff
kobject: 'loop1' (ffff8880a4a049a0): kobject_uevent_env
kobject: 'loop1' (ffff8880a4a049a0): fill_kobj_path: path
= '/devices/virtual/block/loop1'
kobject: 'loop3' (ffff8880a4ad21e0): kobject_uevent_env
kobject: 'loop3' (ffff8880a4ad21e0): fill_kobj_path: path
= '/devices/virtual/block/loop3'
net_ratelimit: 25 callbacks suppressed
TCP: out of memory -- consider tuning tcp_mem
TCP: out of memory -- consider tuning tcp_mem
kobject: 'loop2' (ffff8880a4a572a0): kobject_uevent_env
kobject: 'loop2' (ffff8880a4a572a0): fill_kobj_path: path
= '/devices/virtual/block/loop2'
kobject: 'loop5' (ffff8880a4b422e0): kobject_uevent_env
kobject: 'loop5' (ffff8880a4b422e0): fill_kobj_path: path
= '/devices/virtual/block/loop5'
TCP: out of memory -- consider tuning tcp_mem
TCP: out of memory -- consider tuning tcp_mem
kobject: 'loop0' (ffff88805cea2f60): kobject_uevent_env
kobject: 'loop0' (ffff88805cea2f60): fill_kobj_path: path
= '/devices/virtual/block/loop0'
kobject: 'loop4' (ffff8880a4b0a260): kobject_uevent_env
kobject: 'loop4' (ffff8880a4b0a260): fill_kobj_path: path
= '/devices/virtual/block/loop4'
TCP: out of memory -- consider tuning tcp_mem
TCP: out of memory -- consider tuning tcp_mem
TCP: out of memory -- consider tuning tcp_mem
kobject: 'loop5' (ffff8880a4b422e0): kobject_uevent_env
kobject: 'loop5' (ffff8880a4b422e0): fill_kobj_path: path
= '/devices/virtual/block/loop5'
kobject: 'loop2' (ffff8880a4a572a0): kobject_uevent_env
kobject: 'loop2' (ffff8880a4a572a0): fill_kobj_path: path
= '/devices/virtual/block/loop2'
kobject: 'loop4' (ffff8880a4b0a260): kobject_uevent_env
kobject: 'loop4' (ffff8880a4b0a260): fill_kobj_path: path
= '/devices/virtual/block/loop4'
kobject: 'loop2' (ffff8880a4a572a0): kobject_uevent_env
kobject: 'loop2' (ffff8880a4a572a0): fill_kobj_path: path
= '/devices/virtual/block/loop2'
kobject: 'loop5' (ffff8880a4b422e0): kobject_uevent_env
kobject: 'loop5' (ffff8880a4b422e0): fill_kobj_path: path
= '/devices/virtual/block/loop5'
kobject: 'loop0' (ffff88805cea2f60): kobject_uevent_env
kobject: 'loop0' (ffff88805cea2f60): fill_kobj_path: path
= '/devices/virtual/block/loop0'
TCP: out of memory -- consider tuning tcp_mem
kobject: 'loop2' (ffff8880a4a572a0): kobject_uevent_env
kobject: 'loop2' (ffff8880a4a572a0): fill_kobj_path: path
= '/devices/virtual/block/loop2'
kobject: 'loop4' (ffff8880a4b0a260): kobject_uevent_env
kobject: 'loop4' (ffff8880a4b0a260): fill_kobj_path: path
= '/devices/virtual/block/loop4'
kobject: 'loop5' (ffff8880a4b422e0): kobject_uevent_env
kobject: 'loop5' (ffff8880a4b422e0): fill_kobj_path: path
= '/devices/virtual/block/loop5'
kobject: 'loop1' (ffff8880a4a049a0): kobject_uevent_env
kobject: 'loop1' (ffff8880a4a049a0): fill_kobj_path: path
= '/devices/virtual/block/loop1'
kobject: 'loop3' (ffff8880a4ad21e0): kobject_uevent_env
kobject: 'loop3' (ffff8880a4ad21e0): fill_kobj_path: path
= '/devices/virtual/block/loop3'
TCP: out of memory -- consider tuning tcp_mem
kobject: 'loop5' (ffff8880a4b422e0): kobject_uevent_env
TCP: out of memory -- consider tuning tcp_mem
kobject: 'loop5' (ffff8880a4b422e0): fill_kobj_path: path
= '/devices/virtual/block/loop5'
kobject: 'loop0' (ffff88805cea2f60): kobject_uevent_env
kobject: 'loop0' (ffff88805cea2f60): fill_kobj_path: path
= '/devices/virtual/block/loop0'
kobject: 'loop2' (ffff8880a4a572a0): kobject_uevent_env
kobject: 'loop2' (ffff8880a4a572a0): fill_kobj_path: path
= '/devices/virtual/block/loop2'
kobject: 'loop4' (ffff8880a4b0a260): kobject_uevent_env
kobject: 'loop4' (ffff8880a4b0a260): fill_kobj_path: path
= '/devices/virtual/block/loop4'
kobject: 'loop4' (ffff8880a4b0a260): kobject_uevent_env
kobject: 'loop4' (ffff8880a4b0a260): fill_kobj_path: path
= '/devices/virtual/block/loop4'
kobject: 'loop2' (ffff8880a4a572a0): kobject_uevent_env
kobject: 'loop2' (ffff8880a4a572a0): fill_kobj_path: path
= '/devices/virtual/block/loop2'
kobject: 'loop5' (ffff8880a4b422e0): kobject_uevent_env
kobject: 'loop5' (ffff8880a4b422e0): fill_kobj_path: path
= '/devices/virtual/block/loop5'
kobject: 'loop0' (ffff88805cea2f60): kobject_uevent_env
kobject: 'loop0' (ffff88805cea2f60): fill_kobj_path: path
= '/devices/virtual/block/loop0'
kobject: 'loop2' (ffff8880a4a572a0): kobject_uevent_env
kobject: 'loop2' (ffff8880a4a572a0): fill_kobj_path: path
= '/devices/virtual/block/loop2'
kobject: 'loop4' (ffff8880a4b0a260): kobject_uevent_env
kobject: 'loop4' (ffff8880a4b0a260): fill_kobj_path: path
= '/devices/virtual/block/loop4'
kobject: 'loop1' (ffff8880a4a049a0): kobject_uevent_env
kobject: 'loop1' (ffff8880a4a049a0): fill_kobj_path: path
= '/devices/virtual/block/loop1'
kobject: 'loop3' (ffff8880a4ad21e0): kobject_uevent_env
kobject: 'loop3' (ffff8880a4ad21e0): fill_kobj_path: path
= '/devices/virtual/block/loop3'
kobject: 'loop2' (ffff8880a4a572a0): kobject_uevent_env
kobject: 'loop2' (ffff8880a4a572a0): fill_kobj_path: path
= '/devices/virtual/block/loop2'
kobject: 'loop5' (ffff8880a4b422e0): kobject_uevent_env
kobject: 'loop5' (ffff8880a4b422e0): fill_kobj_path: path
= '/devices/virtual/block/loop5'
kobject: 'loop4' (ffff8880a4b0a260): kobject_uevent_env
kobject: 'loop4' (ffff8880a4b0a260): fill_kobj_path: path
= '/devices/virtual/block/loop4'
kobject: 'loop0' (ffff88805cea2f60): kobject_uevent_env
kobject: 'loop0' (ffff88805cea2f60): fill_kobj_path: path
= '/devices/virtual/block/loop0'
kobject: 'loop1' (ffff8880a4a049a0): kobject_uevent_env
kobject: 'loop1' (ffff8880a4a049a0): fill_kobj_path: path
= '/devices/virtual/block/loop1'
kobject: 'loop1' (ffff8880a4a049a0): kobject_uevent_env
kobject: 'loop1' (ffff8880a4a049a0): fill_kobj_path: path
= '/devices/virtual/block/loop1'
kobject: 'loop2' (ffff8880a4a572a0): kobject_uevent_env
kobject: 'loop2' (ffff8880a4a572a0): fill_kobj_path: path
= '/devices/virtual/block/loop2'
kobject: 'loop4' (ffff8880a4b0a260): kobject_uevent_env
kobject: 'loop4' (ffff8880a4b0a260): fill_kobj_path: path
= '/devices/virtual/block/loop4'
kobject: 'loop0' (ffff88805cea2f60): kobject_uevent_env
kobject: 'loop0' (ffff88805cea2f60): fill_kobj_path: path
= '/devices/virtual/block/loop0'
kobject: 'loop5' (ffff8880a4b422e0): kobject_uevent_env
kobject: 'loop5' (ffff8880a4b422e0): fill_kobj_path: path
= '/devices/virtual/block/loop5'
kobject: 'loop1' (ffff8880a4a049a0): kobject_uevent_env
kobject: 'loop1' (ffff8880a4a049a0): fill_kobj_path: path
= '/devices/virtual/block/loop1'
kobject: 'loop2' (ffff8880a4a572a0): kobject_uevent_env
kobject: 'loop2' (ffff8880a4a572a0): fill_kobj_path: path
= '/devices/virtual/block/loop2'
kobject: 'loop3' (ffff8880a4ad21e0): kobject_uevent_env
kobject: 'loop3' (ffff8880a4ad21e0): fill_kobj_path: path
= '/devices/virtual/block/loop3'
kobject: 'loop1' (ffff8880a4a049a0): kobject_uevent_env
kobject: 'loop1' (ffff8880a4a049a0): fill_kobj_path: path
= '/devices/virtual/block/loop1'
kobject: 'loop5' (ffff8880a4b422e0): kobject_uevent_env
kobject: 'loop5' (ffff8880a4b422e0): fill_kobj_path: path
= '/devices/virtual/block/loop5'
kobject: 'loop2' (ffff8880a4a572a0): kobject_uevent_env
kobject: 'loop2' (ffff8880a4a572a0): fill_kobj_path: path
= '/devices/virtual/block/loop2'
kobject: 'loop4' (ffff8880a4b0a260): kobject_uevent_env
kobject: 'loop4' (ffff8880a4b0a260): fill_kobj_path: path
= '/devices/virtual/block/loop4'
kobject: 'loop3' (ffff8880a4ad21e0): kobject_uevent_env
kobject: 'loop3' (ffff8880a4ad21e0): fill_kobj_path: path
= '/devices/virtual/block/loop3'
kobject: 'loop0' (ffff88805cea2f60): kobject_uevent_env
kobject: 'loop0' (ffff88805cea2f60): fill_kobj_path: path
= '/devices/virtual/block/loop0'
kobject: 'loop5' (ffff8880a4b422e0): kobject_uevent_env
kobject: 'loop5' (ffff8880a4b422e0): fill_kobj_path: path
= '/devices/virtual/block/loop5'
kobject: 'loop1' (ffff8880a4a049a0): kobject_uevent_env
kobject: 'loop1' (ffff8880a4a049a0): fill_kobj_path: path
= '/devices/virtual/block/loop1'
kobject: 'loop2' (ffff8880a4a572a0): kobject_uevent_env
kobject: 'loop2' (ffff8880a4a572a0): fill_kobj_path: path
= '/devices/virtual/block/loop2'
kobject: 'loop0' (ffff88805cea2f60): kobject_uevent_env
kobject: 'loop0' (ffff88805cea2f60): fill_kobj_path: path
= '/devices/virtual/block/loop0'
kobject: 'loop3' (ffff8880a4ad21e0): kobject_uevent_env
kobject: 'loop3' (ffff8880a4ad21e0): fill_kobj_path: path
= '/devices/virtual/block/loop3'
kobject: 'loop5' (ffff8880a4b422e0): kobject_uevent_env
kobject: 'loop5' (ffff8880a4b422e0): fill_kobj_path: path
= '/devices/virtual/block/loop5'
kobject: 'loop4' (ffff8880a4b0a260): kobject_uevent_env
kobject: 'loop4' (ffff8880a4b0a260): fill_kobj_path: path
= '/devices/virtual/block/loop4'
kobject: 'loop2' (ffff8880a4a572a0): kobject_uevent_env
kobject: 'loop2' (ffff8880a4a572a0): fill_kobj_path: path
= '/devices/virtual/block/loop2'
kobject: 'loop1' (ffff8880a4a049a0): kobject_uevent_env
kobject: 'loop1' (ffff8880a4a049a0): fill_kobj_path: path
= '/devices/virtual/block/loop1'
kobject: 'loop0' (ffff88805cea2f60): kobject_uevent_env
kobject: 'loop0' (ffff88805cea2f60): fill_kobj_path: path
= '/devices/virtual/block/loop0'
kobject: 'loop3' (ffff8880a4ad21e0): kobject_uevent_env
kobject: 'loop3' (ffff8880a4ad21e0): fill_kobj_path: path
= '/devices/virtual/block/loop3'
kobject: 'loop1' (ffff8880a4a049a0): kobject_uevent_env
kobject: 'loop1' (ffff8880a4a049a0): fill_kobj_path: path
= '/devices/virtual/block/loop1'
kobject: 'loop5' (ffff8880a4b422e0): kobject_uevent_env
kobject: 'loop5' (ffff8880a4b422e0): fill_kobj_path: path
= '/devices/virtual/block/loop5'
kobject: 'loop3' (ffff8880a4ad21e0): kobject_uevent_env
kobject: 'loop3' (ffff8880a4ad21e0): fill_kobj_path: path
= '/devices/virtual/block/loop3'
kobject: 'loop2' (ffff8880a4a572a0): kobject_uevent_env
kobject: 'loop2' (ffff8880a4a572a0): fill_kobj_path: path
= '/devices/virtual/block/loop2'
kobject: 'loop4' (ffff8880a4b0a260): kobject_uevent_env
kobject: 'loop4' (ffff8880a4b0a260): fill_kobj_path: path
= '/devices/virtual/block/loop4'
kobject: 'loop1' (ffff8880a4a049a0): kobject_uevent_env
kobject: 'loop1' (ffff8880a4a049a0): fill_kobj_path: path
= '/devices/virtual/block/loop1'
kobject: 'loop0' (ffff88805cea2f60): kobject_uevent_env
kobject: 'loop0' (ffff88805cea2f60): fill_kobj_path: path
= '/devices/virtual/block/loop0'
kobject: 'loop5' (ffff8880a4b422e0): kobject_uevent_env
kobject: 'loop5' (ffff8880a4b422e0): fill_kobj_path: path
= '/devices/virtual/block/loop5'
kobject: 'loop2' (ffff8880a4a572a0): kobject_uevent_env
kobject: 'loop2' (ffff8880a4a572a0): fill_kobj_path: path
= '/devices/virtual/block/loop2'
kobject: 'loop5' (ffff8880a4b422e0): kobject_uevent_env
kobject: 'loop5' (ffff8880a4b422e0): fill_kobj_path: path
= '/devices/virtual/block/loop5'
kobject: 'loop4' (ffff8880a4b0a260): kobject_uevent_env
kobject: 'loop4' (ffff8880a4b0a260): fill_kobj_path: path
= '/devices/virtual/block/loop4'
kobject: 'loop2' (ffff8880a4a572a0): kobject_uevent_env
kobject: 'loop2' (ffff8880a4a572a0): fill_kobj_path: path
= '/devices/virtual/block/loop2'
kobject: 'loop1' (ffff8880a4a049a0): kobject_uevent_env
kobject: 'loop1' (ffff8880a4a049a0): fill_kobj_path: path
= '/devices/virtual/block/loop1'
kobject: 'loop5' (ffff8880a4b422e0): kobject_uevent_env
kobject: 'loop5' (ffff8880a4b422e0): fill_kobj_path: path
= '/devices/virtual/block/loop5'
kobject: 'loop3' (ffff8880a4ad21e0): kobject_uevent_env
kobject: 'loop3' (ffff8880a4ad21e0): fill_kobj_path: path
= '/devices/virtual/block/loop3'
kobject: 'loop4' (ffff8880a4b0a260): kobject_uevent_env
kobject: 'loop4' (ffff8880a4b0a260): fill_kobj_path: path
= '/devices/virtual/block/loop4'
kobject: 'loop0' (ffff88805cea2f60): kobject_uevent_env
kobject: 'loop0' (ffff88805cea2f60): fill_kobj_path: path
= '/devices/virtual/block/loop0'
kobject: 'loop2' (ffff8880a4a572a0): kobject_uevent_env
kobject: 'loop2' (ffff8880a4a572a0): fill_kobj_path: path
= '/devices/virtual/block/loop2'
kobject: 'loop1' (ffff8880a4a049a0): kobject_uevent_env
kobject: 'loop1' (ffff8880a4a049a0): fill_kobj_path: path
= '/devices/virtual/block/loop1'
kobject: 'loop5' (ffff8880a4b422e0): kobject_uevent_env
kobject: 'loop5' (ffff8880a4b422e0): fill_kobj_path: path
= '/devices/virtual/block/loop5'
kobject: 'loop4' (ffff8880a4b0a260): kobject_uevent_env
kobject: 'loop4' (ffff8880a4b0a260): fill_kobj_path: path
= '/devices/virtual/block/loop4'
kobject: 'loop1' (ffff8880a4a049a0): kobject_uevent_env
kobject: 'loop1' (ffff8880a4a049a0): fill_kobj_path: path
= '/devices/virtual/block/loop1'
kobject: 'loop5' (ffff8880a4b422e0): kobject_uevent_env
kobject: 'loop5' (ffff8880a4b422e0): fill_kobj_path: path
= '/devices/virtual/block/loop5'
kobject: 'loop3' (ffff8880a4ad21e0): kobject_uevent_env
kobject: 'loop3' (ffff8880a4ad21e0): fill_kobj_path: path
= '/devices/virtual/block/loop3'
kobject: 'loop2' (ffff8880a4a572a0): kobject_uevent_env
kobject: 'loop2' (ffff8880a4a572a0): fill_kobj_path: path
= '/devices/virtual/block/loop2'
kobject: 'loop2' (ffff8880a4a572a0): kobject_uevent_env
kobject: 'loop2' (ffff8880a4a572a0): fill_kobj_path: path
= '/devices/virtual/block/loop2'
net_ratelimit: 23 callbacks suppressed
protocol 88fb is buggy, dev hsr_slave_0
kobject: 'loop4' (ffff8880a4b0a260): kobject_uevent_env
protocol 88fb is buggy, dev hsr_slave_1
kobject: 'loop4' (ffff8880a4b0a260): fill_kobj_path: path
= '/devices/virtual/block/loop4'
protocol 88fb is buggy, dev hsr_slave_0
kobject: 'loop0' (ffff88805cea2f60): kobject_uevent_env
protocol 88fb is buggy, dev hsr_slave_1
protocol 88fb is buggy, dev hsr_slave_0
kobject: 'loop0' (ffff88805cea2f60): fill_kobj_path: path
= '/devices/virtual/block/loop0'
protocol 88fb is buggy, dev hsr_slave_1
protocol 88fb is buggy, dev hsr_slave_0
protocol 88fb is buggy, dev hsr_slave_1
kobject: 'loop1' (ffff8880a4a049a0): kobject_uevent_env
kobject: 'loop1' (ffff8880a4a049a0): fill_kobj_path: path
= '/devices/virtual/block/loop1'
kobject: 'loop2' (ffff8880a4a572a0): kobject_uevent_env
kobject: 'loop2' (ffff8880a4a572a0): fill_kobj_path: path
= '/devices/virtual/block/loop2'
kobject: 'loop1' (ffff8880a4a049a0): kobject_uevent_env
kobject: 'loop1' (ffff8880a4a049a0): fill_kobj_path: path
= '/devices/virtual/block/loop1'
kobject: 'loop4' (ffff8880a4b0a260): kobject_uevent_env
kobject: 'loop4' (ffff8880a4b0a260): fill_kobj_path: path
= '/devices/virtual/block/loop4'
kobject: 'loop5' (ffff8880a4b422e0): kobject_uevent_env
kobject: 'loop5' (ffff8880a4b422e0): fill_kobj_path: path
= '/devices/virtual/block/loop5'
kobject: 'loop3' (ffff8880a4ad21e0): kobject_uevent_env
kobject: 'loop3' (ffff8880a4ad21e0): fill_kobj_path: path
= '/devices/virtual/block/loop3'
kobject: 'loop4' (ffff8880a4b0a260): kobject_uevent_env
kobject: 'loop4' (ffff8880a4b0a260): fill_kobj_path: path
= '/devices/virtual/block/loop4'
TCP: out of memory -- consider tuning tcp_mem
kobject: 'loop1' (ffff8880a4a049a0): kobject_uevent_env
kobject: 'loop1' (ffff8880a4a049a0): fill_kobj_path: path
= '/devices/virtual/block/loop1'
kobject: 'loop2' (ffff8880a4a572a0): kobject_uevent_env
kobject: 'loop2' (ffff8880a4a572a0): fill_kobj_path: path
= '/devices/virtual/block/loop2'
TCP: out of memory -- consider tuning tcp_mem
kobject: 'loop0' (ffff88805cea2f60): kobject_uevent_env
kobject: 'loop0' (ffff88805cea2f60): fill_kobj_path: path
= '/devices/virtual/block/loop0'
kobject: 'loop2' (ffff8880a4a572a0): kobject_uevent_env
kobject: 'loop2' (ffff8880a4a572a0): fill_kobj_path: path
= '/devices/virtual/block/loop2'
kobject: 'loop1' (ffff8880a4a049a0): kobject_uevent_env
kobject: 'loop1' (ffff8880a4a049a0): fill_kobj_path: path
= '/devices/virtual/block/loop1'
kobject: 'loop4' (ffff8880a4b0a260): kobject_uevent_env
kobject: 'loop4' (ffff8880a4b0a260): fill_kobj_path: path
= '/devices/virtual/block/loop4'
kobject: 'loop2' (ffff8880a4a572a0): kobject_uevent_env
kobject: 'loop2' (ffff8880a4a572a0): fill_kobj_path: path
= '/devices/virtual/block/loop2'
kobject: 'loop3' (ffff8880a4ad21e0): kobject_uevent_env
kobject: 'loop3' (ffff8880a4ad21e0): fill_kobj_path: path
= '/devices/virtual/block/loop3'
kobject: 'loop5' (ffff8880a4b422e0): kobject_uevent_env
kobject: 'loop5' (ffff8880a4b422e0): fill_kobj_path: path
= '/devices/virtual/block/loop5'
kobject: 'loop0' (ffff88805cea2f60): kobject_uevent_env
kobject: 'loop0' (ffff88805cea2f60): fill_kobj_path: path
= '/devices/virtual/block/loop0'
kobject: 'loop1' (ffff8880a4a049a0): kobject_uevent_env
kobject: 'loop1' (ffff8880a4a049a0): fill_kobj_path: path
= '/devices/virtual/block/loop1'
kobject: 'loop3' (ffff8880a4ad21e0): kobject_uevent_env
kobject: 'loop3' (ffff8880a4ad21e0): fill_kobj_path: path
= '/devices/virtual/block/loop3'
kobject: 'loop1' (ffff8880a4a049a0): kobject_uevent_env
kobject: 'loop1' (ffff8880a4a049a0): fill_kobj_path: path
= '/devices/virtual/block/loop1'
kobject: 'loop3' (ffff8880a4ad21e0): kobject_uevent_env
kobject: 'loop3' (ffff8880a4ad21e0): fill_kobj_path: path
= '/devices/virtual/block/loop3'
kobject: 'loop0' (ffff88805cea2f60): kobject_uevent_env
kobject: 'loop0' (ffff88805cea2f60): fill_kobj_path: path
= '/devices/virtual/block/loop0'
kobject: 'loop5' (ffff8880a4b422e0): kobject_uevent_env
kobject: 'loop5' (ffff8880a4b422e0): fill_kobj_path: path
= '/devices/virtual/block/loop5'
kobject: 'loop2' (ffff8880a4a572a0): kobject_uevent_env
kobject: 'loop2' (ffff8880a4a572a0): fill_kobj_path: path
= '/devices/virtual/block/loop2'
kobject: 'loop3' (ffff8880a4ad21e0): kobject_uevent_env
kobject: 'loop3' (ffff8880a4ad21e0): fill_kobj_path: path
= '/devices/virtual/block/loop3'
kobject: 'loop0' (ffff88805cea2f60): kobject_uevent_env
kobject: 'loop0' (ffff88805cea2f60): fill_kobj_path: path
= '/devices/virtual/block/loop0'
kobject: 'loop1' (ffff8880a4a049a0): kobject_uevent_env
kobject: 'loop1' (ffff8880a4a049a0): fill_kobj_path: path
= '/devices/virtual/block/loop1'
kobject: 'loop4' (ffff8880a4b0a260): kobject_uevent_env
kobject: 'loop4' (ffff8880a4b0a260): fill_kobj_path: path
= '/devices/virtual/block/loop4'
---
This bug is generated by a bot. It may contain errors.
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syzbot
Mar 15, 2020, 3:58:11 PM3/15/20
to syzkaller...@googlegroups.com
Auto-closing this bug as obsolete.
Crashes did not happen for a while, no reproducer and no activity.
Crashes did not happen for a while, no reproducer and no activity.
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