BUG: soft lockup in ip_rcv (2)
8 views
Skip to first unread message
syzbot
Mar 28, 2021, 11:49:14 AM3/28/21
to syzkaller...@googlegroups.com
Hello,
syzbot found the following issue on:
HEAD commit: 670d6552 Linux 4.14.227
git tree: linux-4.14.y
console output: https://syzkaller.appspot.com/x/log.txt?x=16a97016d00000
kernel config: https://syzkaller.appspot.com/x/.config?x=b38402558b315f84
dashboard link: https://syzkaller.appspot.com/bug?extid=753df8cb1d3d716367bd
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+753df8...@syzkaller.appspotmail.com
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 00007f7dd1e9d1d0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001
R13: 00007ffc97cefc0f R14: 00007f7dd1e9d300 R15: 0000000000022000
watchdog: BUG: soft lockup - CPU#0 stuck for 22s! [ksoftirqd/0:7]
Modules linked in:
irq event stamp: 6741177
hardirqs last enabled at (6741176): [<ffffffff817e5998>] slab_alloc_node mm/slab.c:3327 [inline]
hardirqs last enabled at (6741176): [<ffffffff817e5998>] kmem_cache_alloc_node+0x2f8/0x410 mm/slab.c:3640
hardirqs last disabled at (6741177): [<ffffffff874018ae>] apic_timer_interrupt+0x8e/0xa0 arch/x86/entry/entry_64.S:793
softirqs last enabled at (3467942): [<ffffffff8760068b>] __do_softirq+0x68b/0x9ff kernel/softirq.c:314
softirqs last disabled at (3467947): [<ffffffff81320710>] run_ksoftirqd+0x50/0x1a0 kernel/softirq.c:670
CPU: 0 PID: 7 Comm: ksoftirqd/0 Not tainted 4.14.227-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
task: ffff8880b5ff61c0 task.stack: ffff8880b5408000
RIP: 0010:unwind_next_frame+0xd5d/0x17d0 arch/x86/kernel/unwind_orc.c:467
RSP: 0018:ffff8880b540e280 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff10
RAX: 0000000000000000 RBX: 1ffff11016a81c57 RCX: ffffffff8ac7a654
RDX: 0000000000000000 RSI: 0000000000000001 RDI: ffff8880b540e838
RBP: 0000000000000001 R08: ffffffff8ac7a658 R09: ffffffff8ac7a659
R10: ffff8880b540e840 R11: 0000000000000001 R12: ffff8880b540e375
R13: ffff8880b540e378 R14: ffff8880b540e390 R15: ffff8880b540e340
FS: 0000000000000000(0000) GS:ffff8880ba400000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f7dd1ebdfe8 CR3: 0000000008e6a000 CR4: 00000000001406f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
__save_stack_trace+0x90/0x160 arch/x86/kernel/stacktrace.c:44
save_stack mm/kasan/kasan.c:447 [inline]
set_track mm/kasan/kasan.c:459 [inline]
kasan_kmalloc+0xeb/0x160 mm/kasan/kasan.c:551
kmem_cache_alloc_node+0x146/0x410 mm/slab.c:3642
__alloc_skb+0x5c/0x510 net/core/skbuff.c:193
skb_segment+0x677/0x2e60 net/core/skbuff.c:3680
sctp_gso_segment net/sctp/offload.c:76 [inline]
sctp_gso_segment+0x204/0x810 net/sctp/offload.c:43
inet_gso_segment+0x470/0x10c0 net/ipv4/af_inet.c:1272
inet_gso_segment+0x470/0x10c0 net/ipv4/af_inet.c:1272
skb_mac_gso_segment+0x240/0x4c0 net/core/dev.c:2745
__skb_gso_segment+0x302/0x600 net/core/dev.c:2818
skb_gso_segment include/linux/netdevice.h:4002 [inline]
validate_xmit_skb+0x49c/0x9f0 net/core/dev.c:3071
validate_xmit_skb_list+0xaf/0x110 net/core/dev.c:3122
sch_direct_xmit+0x2dc/0x500 net/sched/sch_generic.c:181
qdisc_restart net/sched/sch_generic.c:249 [inline]
__qdisc_run+0x25d/0xe00 net/sched/sch_generic.c:257
__dev_xmit_skb net/core/dev.c:3231 [inline]
__dev_queue_xmit+0x13ac/0x2480 net/core/dev.c:3489
neigh_hh_output include/net/neighbour.h:490 [inline]
neigh_output include/net/neighbour.h:498 [inline]
ip_finish_output2+0x9db/0x1340 net/ipv4/ip_output.c:230
ip_finish_output+0x37c/0xc50 net/ipv4/ip_output.c:318
NF_HOOK_COND include/linux/netfilter.h:239 [inline]
ip_output+0x1cd/0x510 net/ipv4/ip_output.c:406
dst_output include/net/dst.h:470 [inline]
ip_local_out+0x93/0x170 net/ipv4/ip_output.c:125
iptunnel_xmit+0x5cc/0x950 net/ipv4/ip_tunnel_core.c:91
ip_tunnel_xmit+0xedc/0x33a0 net/ipv4/ip_tunnel.c:799
sit_tunnel_xmit__ net/ipv6/sit.c:1008 [inline]
sit_tunnel_xmit+0x1ab/0x2130 net/ipv6/sit.c:1021
__netdev_start_xmit include/linux/netdevice.h:4051 [inline]
netdev_start_xmit include/linux/netdevice.h:4060 [inline]
xmit_one net/core/dev.c:3005 [inline]
dev_hard_start_xmit+0x188/0x890 net/core/dev.c:3021
__dev_queue_xmit+0x1d7f/0x2480 net/core/dev.c:3521
neigh_output include/net/neighbour.h:500 [inline]
ip_finish_output2+0xba6/0x1340 net/ipv4/ip_output.c:230
ip_finish_output+0x37c/0xc50 net/ipv4/ip_output.c:318
NF_HOOK_COND include/linux/netfilter.h:239 [inline]
ip_output+0x1cd/0x510 net/ipv4/ip_output.c:406
dst_output include/net/dst.h:470 [inline]
ip_local_out+0x93/0x170 net/ipv4/ip_output.c:125
nf_dup_ipv4 net/ipv4/netfilter/nf_dup_ipv4.c:91 [inline]
nf_dup_ipv4+0x4bb/0x680 net/ipv4/netfilter/nf_dup_ipv4.c:53
tee_tg4+0x109/0x160 net/netfilter/xt_TEE.c:36
ipt_do_table+0xa9a/0x16f0 net/ipv4/netfilter/ip_tables.c:353
iptable_filter_hook+0x172/0x1e0 net/ipv4/netfilter/iptable_filter.c:47
nf_hook_entry_hookfn include/linux/netfilter.h:108 [inline]
nf_hook_slow+0xb0/0x1a0 net/netfilter/core.c:467
nf_hook include/linux/netfilter.h:205 [inline]
NF_HOOK include/linux/netfilter.h:248 [inline]
ip_local_deliver+0x28c/0x460 net/ipv4/ip_input.c:257
dst_input include/net/dst.h:476 [inline]
ip_rcv_finish+0x6e3/0x19f0 net/ipv4/ip_input.c:396
NF_HOOK include/linux/netfilter.h:250 [inline]
ip_rcv+0x8a7/0xf10 net/ipv4/ip_input.c:493
__netif_receive_skb_core+0x15ee/0x2a30 net/core/dev.c:4474
__netif_receive_skb+0x27/0x1a0 net/core/dev.c:4512
process_backlog+0x218/0x6f0 net/core/dev.c:5194
napi_poll net/core/dev.c:5596 [inline]
net_rx_action+0x466/0xfd0 net/core/dev.c:5662
__do_softirq+0x24d/0x9ff kernel/softirq.c:288
run_ksoftirqd+0x50/0x1a0 kernel/softirq.c:670
smpboot_thread_fn+0x5c1/0x920 kernel/smpboot.c:164
kthread+0x30d/0x420 kernel/kthread.c:232
ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:404
Code: 48 c1 ea 03 48 c1 ee 03 0f b6 14 02 0f b6 04 06 4c 89 c6 83 e6 07 40 38 f2 40 0f 9e c6 84 d2 0f 95 c2 40 84 d6 0f 85 cd 07 00 00 <41> 83 e1 07 44 38 c8 0f 9e c2 84 c0 0f 95 c0 84 c2 0f 85 b6 07
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1 skipped: idling at pc 0xffffffff872134be
---
This report 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 issue. See:
https://goo.gl/tpsmEJ#status for how to communicate with syzbot.
syzbot found the following issue on:
HEAD commit: 670d6552 Linux 4.14.227
git tree: linux-4.14.y
console output: https://syzkaller.appspot.com/x/log.txt?x=16a97016d00000
kernel config: https://syzkaller.appspot.com/x/.config?x=b38402558b315f84
dashboard link: https://syzkaller.appspot.com/bug?extid=753df8cb1d3d716367bd
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+753df8...@syzkaller.appspotmail.com
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 00007f7dd1e9d1d0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001
R13: 00007ffc97cefc0f R14: 00007f7dd1e9d300 R15: 0000000000022000
watchdog: BUG: soft lockup - CPU#0 stuck for 22s! [ksoftirqd/0:7]
Modules linked in:
irq event stamp: 6741177
hardirqs last enabled at (6741176): [<ffffffff817e5998>] slab_alloc_node mm/slab.c:3327 [inline]
hardirqs last enabled at (6741176): [<ffffffff817e5998>] kmem_cache_alloc_node+0x2f8/0x410 mm/slab.c:3640
hardirqs last disabled at (6741177): [<ffffffff874018ae>] apic_timer_interrupt+0x8e/0xa0 arch/x86/entry/entry_64.S:793
softirqs last enabled at (3467942): [<ffffffff8760068b>] __do_softirq+0x68b/0x9ff kernel/softirq.c:314
softirqs last disabled at (3467947): [<ffffffff81320710>] run_ksoftirqd+0x50/0x1a0 kernel/softirq.c:670
CPU: 0 PID: 7 Comm: ksoftirqd/0 Not tainted 4.14.227-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
task: ffff8880b5ff61c0 task.stack: ffff8880b5408000
RIP: 0010:unwind_next_frame+0xd5d/0x17d0 arch/x86/kernel/unwind_orc.c:467
RSP: 0018:ffff8880b540e280 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff10
RAX: 0000000000000000 RBX: 1ffff11016a81c57 RCX: ffffffff8ac7a654
RDX: 0000000000000000 RSI: 0000000000000001 RDI: ffff8880b540e838
RBP: 0000000000000001 R08: ffffffff8ac7a658 R09: ffffffff8ac7a659
R10: ffff8880b540e840 R11: 0000000000000001 R12: ffff8880b540e375
R13: ffff8880b540e378 R14: ffff8880b540e390 R15: ffff8880b540e340
FS: 0000000000000000(0000) GS:ffff8880ba400000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f7dd1ebdfe8 CR3: 0000000008e6a000 CR4: 00000000001406f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
__save_stack_trace+0x90/0x160 arch/x86/kernel/stacktrace.c:44
save_stack mm/kasan/kasan.c:447 [inline]
set_track mm/kasan/kasan.c:459 [inline]
kasan_kmalloc+0xeb/0x160 mm/kasan/kasan.c:551
kmem_cache_alloc_node+0x146/0x410 mm/slab.c:3642
__alloc_skb+0x5c/0x510 net/core/skbuff.c:193
skb_segment+0x677/0x2e60 net/core/skbuff.c:3680
sctp_gso_segment net/sctp/offload.c:76 [inline]
sctp_gso_segment+0x204/0x810 net/sctp/offload.c:43
inet_gso_segment+0x470/0x10c0 net/ipv4/af_inet.c:1272
inet_gso_segment+0x470/0x10c0 net/ipv4/af_inet.c:1272
skb_mac_gso_segment+0x240/0x4c0 net/core/dev.c:2745
__skb_gso_segment+0x302/0x600 net/core/dev.c:2818
skb_gso_segment include/linux/netdevice.h:4002 [inline]
validate_xmit_skb+0x49c/0x9f0 net/core/dev.c:3071
validate_xmit_skb_list+0xaf/0x110 net/core/dev.c:3122
sch_direct_xmit+0x2dc/0x500 net/sched/sch_generic.c:181
qdisc_restart net/sched/sch_generic.c:249 [inline]
__qdisc_run+0x25d/0xe00 net/sched/sch_generic.c:257
__dev_xmit_skb net/core/dev.c:3231 [inline]
__dev_queue_xmit+0x13ac/0x2480 net/core/dev.c:3489
neigh_hh_output include/net/neighbour.h:490 [inline]
neigh_output include/net/neighbour.h:498 [inline]
ip_finish_output2+0x9db/0x1340 net/ipv4/ip_output.c:230
ip_finish_output+0x37c/0xc50 net/ipv4/ip_output.c:318
NF_HOOK_COND include/linux/netfilter.h:239 [inline]
ip_output+0x1cd/0x510 net/ipv4/ip_output.c:406
dst_output include/net/dst.h:470 [inline]
ip_local_out+0x93/0x170 net/ipv4/ip_output.c:125
iptunnel_xmit+0x5cc/0x950 net/ipv4/ip_tunnel_core.c:91
ip_tunnel_xmit+0xedc/0x33a0 net/ipv4/ip_tunnel.c:799
sit_tunnel_xmit__ net/ipv6/sit.c:1008 [inline]
sit_tunnel_xmit+0x1ab/0x2130 net/ipv6/sit.c:1021
__netdev_start_xmit include/linux/netdevice.h:4051 [inline]
netdev_start_xmit include/linux/netdevice.h:4060 [inline]
xmit_one net/core/dev.c:3005 [inline]
dev_hard_start_xmit+0x188/0x890 net/core/dev.c:3021
__dev_queue_xmit+0x1d7f/0x2480 net/core/dev.c:3521
neigh_output include/net/neighbour.h:500 [inline]
ip_finish_output2+0xba6/0x1340 net/ipv4/ip_output.c:230
ip_finish_output+0x37c/0xc50 net/ipv4/ip_output.c:318
NF_HOOK_COND include/linux/netfilter.h:239 [inline]
ip_output+0x1cd/0x510 net/ipv4/ip_output.c:406
dst_output include/net/dst.h:470 [inline]
ip_local_out+0x93/0x170 net/ipv4/ip_output.c:125
nf_dup_ipv4 net/ipv4/netfilter/nf_dup_ipv4.c:91 [inline]
nf_dup_ipv4+0x4bb/0x680 net/ipv4/netfilter/nf_dup_ipv4.c:53
tee_tg4+0x109/0x160 net/netfilter/xt_TEE.c:36
ipt_do_table+0xa9a/0x16f0 net/ipv4/netfilter/ip_tables.c:353
iptable_filter_hook+0x172/0x1e0 net/ipv4/netfilter/iptable_filter.c:47
nf_hook_entry_hookfn include/linux/netfilter.h:108 [inline]
nf_hook_slow+0xb0/0x1a0 net/netfilter/core.c:467
nf_hook include/linux/netfilter.h:205 [inline]
NF_HOOK include/linux/netfilter.h:248 [inline]
ip_local_deliver+0x28c/0x460 net/ipv4/ip_input.c:257
dst_input include/net/dst.h:476 [inline]
ip_rcv_finish+0x6e3/0x19f0 net/ipv4/ip_input.c:396
NF_HOOK include/linux/netfilter.h:250 [inline]
ip_rcv+0x8a7/0xf10 net/ipv4/ip_input.c:493
__netif_receive_skb_core+0x15ee/0x2a30 net/core/dev.c:4474
__netif_receive_skb+0x27/0x1a0 net/core/dev.c:4512
process_backlog+0x218/0x6f0 net/core/dev.c:5194
napi_poll net/core/dev.c:5596 [inline]
net_rx_action+0x466/0xfd0 net/core/dev.c:5662
__do_softirq+0x24d/0x9ff kernel/softirq.c:288
run_ksoftirqd+0x50/0x1a0 kernel/softirq.c:670
smpboot_thread_fn+0x5c1/0x920 kernel/smpboot.c:164
kthread+0x30d/0x420 kernel/kthread.c:232
ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:404
Code: 48 c1 ea 03 48 c1 ee 03 0f b6 14 02 0f b6 04 06 4c 89 c6 83 e6 07 40 38 f2 40 0f 9e c6 84 d2 0f 95 c2 40 84 d6 0f 85 cd 07 00 00 <41> 83 e1 07 44 38 c8 0f 9e c2 84 c0 0f 95 c0 84 c2 0f 85 b6 07
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1 skipped: idling at pc 0xffffffff872134be
---
This report 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 issue. See:
https://goo.gl/tpsmEJ#status for how to communicate with syzbot.
syzbot
Jul 26, 2021, 11:49:11 AM7/26/21
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.
Reply all
Reply to author
Forward
0 new messages