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Date: Thu, 30 Nov 2017 11:14:59 +0800
From: Fengguang Wu <fengguang.wu@...el.com>
To: netdev@...r.kernel.org
Cc: "David S. Miller" <davem@...emloft.net>,
Linus Torvalds <torvalds@...ux-foundation.org>,
linzhang <xiaolou4617@...il.com>,
David Howells <dhowells@...hat.com>,
linux-kernel@...r.kernel.org, lkp@...org
Subject: [llc_ui_sendmsg] kernel BUG at net/core/skbuff.c:104!
Hello,
FYI this happens in mainline kernel 4.15.0-rc1.
It looks like a new regression and not easy to bisect.
It occurs in 1 out of 100+ boots with trinity.
[child2:628] acct (163) returned ENOSYS, marking as inactive.
[child2:628] finit_module (313) returned ENOSYS, marking as inactive.
[child2:628] bpf (321) returned ENOSYS, marking as inactive.
[ 99.901457] skbuff: skb_over_panic: text:ffffffff826045f3 len:579 put:3 head:ffff8800195f92f8 data:ffff8800195f92f8 tail:0x243 end:0x240 dev:eql
[ 99.903187] ------------[ cut here ]------------
[ 99.903764] kernel BUG at net/core/skbuff.c:104!
[ 99.904540] invalid opcode: 0000 [#1]
[ 99.905028] CPU: 0 PID: 628 Comm: trinity-c2 Not tainted 4.15.0-rc1 #138
[ 99.905843] task: ffff880019600000 task.stack: ffffc900001fc000
[ 99.906612] RIP: 0010:skb_panic+0x83/0x93:
skb_panic at net/core/skbuff.c:100 (discriminator 4)
[ 99.906886] RSP: 0018:ffffc900001ffc38 EFLAGS: 00010202
[ 99.906886] RAX: 0000000000000084 RBX: ffff8800195eed80 RCX: ffff880019600000
[ 99.906886] RDX: 0000000000000000 RSI: ffff880019600000 RDI: 0000000000000002
[ 99.906886] RBP: ffff88001bd4f020 R08: ffffffff81156a62 R09: 0000000000000084
[ 99.906886] R10: 00000000000001c4 R11: ffff88001f23de40 R12: ffff88001bd4f020
[ 99.906886] R13: ffffffff82ac4530 R14: ffffffff826045f3 R15: 0000000000000003
[ 99.906886] FS: 000000000104a880(0000) GS:ffffffff8346c000(0000) knlGS:0000000000000000
[ 99.906886] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 99.906886] CR2: 00007fd0cf08c000 CR3: 0000000019730000 CR4: 00000000000006f0
[ 99.906886] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 99.906886] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
[ 99.906886] Call Trace:
[ 99.906886] ? llc_sap_action_send_ui+0xbd/0xbd:
llc_sap_action_send_xid_c at net/llc/llc_s_ac.c:76
[ 99.906886] skb_put+0xdc/0xf4:
skb_over_panic at net/core/skbuff.c:109
(inlined by) skb_put at net/core/skbuff.c:1694
[ 99.906886] llc_sap_action_send_xid_c+0x54/0xd4:
llc_sap_action_send_xid_c at net/llc/llc_s_ac.c:83
[ 99.906886] llc_sap_state_process+0x123/0x24f:
llc_exec_sap_trans_actions at net/llc/llc_sap.c:152
(inlined by) llc_sap_next_state at net/llc/llc_sap.c:181
(inlined by) llc_sap_state_process at net/llc/llc_sap.c:212
[ 99.906886] llc_build_and_send_xid_pkt+0x75/0x83:
llc_build_and_send_xid_pkt at net/llc/llc_sap.c:276
[ 99.906886] llc_ui_sendmsg+0x3c1/0x774:
llc_ui_sendmsg at net/llc/af_llc.c:945
[ 99.906886] sock_sendmsg_nosec+0x2e/0x8a:
sock_sendmsg_nosec at net/socket.c:632
[ 99.906886] SYSC_sendto+0x1a0/0x1fe:
sock_sendmsg at net/socket.c:642
(inlined by) SYSC_sendto at net/socket.c:1749
[ 99.906886] ? arch_local_irq_enable+0x28/0x5b:
arch_local_irq_enable at arch/x86/include/asm/paravirt.h:787
arch_local_irq_enable+0x28/0x5b:
arch_local_irq_enable at arch/x86/include/asm/paravirt.h:787
arch_local_irq_enable+0x28/0x5b:
arch_local_irq_enable at arch/x86/include/asm/paravirt.h:787
arch_local_irq_enable+0x28/0x5b:
arch_local_irq_enable at arch/x86/include/asm/paravirt.h:787
arch_local_irq_enable+0x28/0x5b:
arch_local_irq_enable at arch/x86/include/asm/paravirt.h:787
arch_local_irq_enable+0x28/0x5b:
arch_local_irq_enable at arch/x86/include/asm/paravirt.h:787
arch_local_irq_enable+0x28/0x5b:
arch_local_irq_enable at arch/x86/include/asm/paravirt.h:787
[ 99.906886] ? __sanitizer_cov_trace_pc+0x27/0x60:
__sanitizer_cov_trace_pc at kernel/kcov.c:101
[ 99.906886] ? do_setitimer+0x29d/0x2ae:
do_setitimer at kernel/time/itimer.c:240
[ 99.906886] ? __sanitizer_cov_trace_pc+0x27/0x60:
__sanitizer_cov_trace_pc at kernel/kcov.c:101
[ 99.906886] ? ftrace_likely_update+0x345/0x375:
ftrace_likely_update at kernel/trace/trace_branch.c:223
[ 99.906886] ? __sanitizer_cov_trace_pc+0x27/0x60:
__sanitizer_cov_trace_pc at kernel/kcov.c:101
[ 99.906886] ? trace_irq_enable_rcuidle+0xf/0xa1:
__read_once_size at include/linux/compiler.h:183
(inlined by) atomic_read at arch/x86/include/asm/atomic.h:27
(inlined by) static_key_count at include/linux/jump_label.h:191
(inlined by) static_key_false at include/linux/jump_label.h:201
(inlined by) trace_irq_enable_rcuidle at include/trace/events/preemptirq.h:40
[ 99.906886] ? entry_SYSCALL_64_fastpath+0x5/0x90:
entry_SYSCALL_64_fastpath at arch/x86/entry/entry_64.S:192
[ 99.906886] ? __sanitizer_cov_trace_pc+0x27/0x60:
__sanitizer_cov_trace_pc at kernel/kcov.c:101
[ 99.906886] SyS_sendto+0x4f/0x5b
[ 99.906886] entry_SYSCALL_64_fastpath+0x1f/0x90:
entry_SYSCALL_64_fastpath at arch/x86/entry/entry_64.S:210
[ 99.906886] RIP: 0033:0x457389
[ 99.906886] RSP: 002b:00007fff674f0a68 EFLAGS: 00000246 ORIG_RAX: 000000000000002c
[ 99.906886] RAX: ffffffffffffffda RBX: 00007fd0cf597000 RCX: 0000000000457389
[ 99.906886] RDX: 000000000000067b RSI: 0000000001212150 RDI: 0000000000000157
[ 99.906886] RBP: 00007fd0d02ffe00 R08: 00000000011e1b70 R09: 0000000000000010
[ 99.906886] R10: 0000000000000004 R11: 0000000000000246 R12: 00007fd0cf597000
[ 99.906886] R13: 0000000000000016 R14: 00000000006fe4c0 R15: 00000000cccccccd
[ 99.906886] Code: c0 00 00 00 4c 89 f2 4c 89 ee 48 c7 c7 cb 01 32 83 50 8b 83 b4 00 00 00 50 ff b3 c8 00 00 00 e8 cb 34 bc fe 48 ff 05 51 0c 32 03 <0f> 0b 48 ff 05 50 0c 32 03 48 ff 05 51 0c 32 03 55 53 48 89 fb
[ 99.906886] RIP: skb_panic+0x83/0x93:
skb_panic at net/core/skbuff.c:100 (discriminator 4) RSP: ffffc900001ffc38
[ 99.935900] ---[ end trace d92468e4c9b72827 ]---
[ 99.977058] Kernel panic - not syncing: Fatal exception
Attached the full dmesg, kconfig and reproduce scripts.
Thanks,
Fengguang
View attachment "dmesg-yocto-waimea-6:20171128131632:x86_64-randconfig-s3-11280958:4.15.0-rc1:138" of type "text/plain" (61405 bytes)
View attachment ".config" of type "text/plain" (116138 bytes)
View attachment "reproduce-yocto-waimea-6:20171128131632:x86_64-randconfig-s3-11280958:4.15.0-rc1:138" of type "text/plain" (877 bytes)
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