syzbot


kernel BUG at net/core/skbuff.c:LINE!

Status: upstream: reported C repro on 2020/01/12 09:43
Reported-by: syzbot+d935648ec6304369192d@syzkaller.appspotmail.com
First crash: 1049d, last: 2d17h
similar bugs (20):
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
android-44 kernel BUG at net/core/skbuff.c:LINE! C 79 1099d 1325d 0/2 public: reported C repro on 2019/04/11 08:44
linux-4.19 kernel BUG at net/core/skbuff.c:LINE! C unreliable 494 89d 1308d 0/1 upstream: reported C repro on 2019/04/27 20:12
android-54 kernel BUG in pfkey_send_acquire C 278 13d 677d 0/2 upstream: reported C repro on 2021/01/17 15:19
upstream kernel BUG at net/core/skbuff.c:LINE! (2) C 562 1763d 1852d 4/24 fixed on 2018/01/29 03:39
android-5-10 kernel BUG in add_grec C error 83 242d 316d 2/2 fixed on 2022/03/29 10:01
android-414 kernel BUG at net/core/skbuff.c:LINE! C 2743 1088d 1325d 0/1 public: reported C repro on 2019/04/11 00:00
android-5-10 kernel BUG in add_grec (2) C error 1039 2d17h 2d17h 0/2 upstream: reported C repro on 2022/11/23 16:35
upstream kernel BUG in netem_enqueue 8 10d 205d 23/24 internal: reported on 2022/05/04 17:12
android-5-10 kernel BUG in cdc_ncm_fill_tx_frame C error 40 335d 400d 1/2 fixed on 2021/12/29 12:20
upstream kernel BUG at net/core/skbuff.c:LINE! (3) C done 4399 641d 1758d 21/24 fixed on 2021/03/10 01:48
upstream kernel BUG at net/core/skbuff.c:LINE! 5 1858d 1929d 3/24 fixed on 2017/10/27 10:10
linux-4.19 kernel BUG in pfkey_send_acquire C done 56 648d 677d 1/1 fixed on 2021/03/18 08:30
linux-4.14 kernel BUG at net/core/skbuff.c:LINE! C 3065 15d 1323d 0/1 upstream: reported C repro on 2019/04/12 15:43
upstream kernel BUG in llc_sap_action_send_xid_c C error 61 381d 595d 22/24 fixed on 2021/11/10 00:50
upstream kernel BUG in pskb_expand_head C done 1174 1d13h 376d 1/24 upstream: reported C repro on 2021/11/15 08:38
android-49 kernel BUG at net/core/skbuff.c:LINE! C 391 1088d 1324d 0/3 public: reported C repro on 2019/04/12 00:00
android-5-15 kernel BUG in add_grec C 32 1d19h 3d13h 0/2 upstream: reported C repro on 2022/11/22 20:13
android-5-15 kernel BUG in mld_newpack 1 9d12h 9d12h 0/2 premoderation: reported on 2022/11/16 21:11
upstream kernel BUG in mld_newpack 1 41d 41d 23/24 internal: reported on 2022/10/15 10:59
android-5-15 kernel BUG in cdc_ncm_fill_tx_frame 1 2d23h 2d23h 0/2 premoderation: reported on 2022/11/23 09:57

Sample crash report:
skbuff: skb_over_panic: text:ffffffff82c3fc69 len:184 put:172 head:ffff8881e1266800 data:ffff8881e1266800 tail:0xb8 end:0x80 dev:<NULL>
------------[ cut here ]------------
kernel BUG at net/core/skbuff.c:109!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
CPU: 1 PID: 2206 Comm: udevd Not tainted 5.4.210-syzkaller-00006-gc80a5b2e7f63 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022
RIP: 0010:skb_panic+0x14a/0x150 net/core/skbuff.c:105
Code: f4 2e 85 48 8b 74 24 08 48 8b 54 24 10 8b 0c 24 44 8b 44 24 04 49 89 e9 31 c0 53 41 55 41 54 41 57 e8 c1 8d d0 00 48 83 c4 20 <0f> 0b 0f 1f 40 00 55 41 57 41 56 41 55 41 54 53 48 83 ec 68 4d 89
RSP: 0018:ffff8881f6f09048 EFLAGS: 00010286
RAX: 0000000000000087 RBX: ffffffff852ef500 RCX: 383a564d35436100
RDX: 0000000080000703 RSI: 0000000080000703 RDI: 0000000000000000
RBP: ffff8881e1266800 R08: ffffffff814e34d7 R09: 0000000000000003
R10: ffffed103ede117d R11: 1ffff1103ede117c R12: 00000000000000b8
R13: 0000000000000080 R14: dffffc0000000000 R15: ffff8881e1266800
FS:  00007f1447894840(0000) GS:ffff8881f6f00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffedeb6dfb8 CR3: 00000001dc9d2000 CR4: 00000000003406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <IRQ>
 skb_over_panic net/core/skbuff.c:114 [inline]
 skb_put+0x148/0x1f0 net/core/skbuff.c:1877
 skb_put_zero include/linux/skbuff.h:2267 [inline]
 cdc_ncm_ndp drivers/net/usb/cdc_ncm.c:1106 [inline]
 cdc_ncm_fill_tx_frame+0xcd9/0x2ce0 drivers/net/usb/cdc_ncm.c:1213
 cdc_ncm_tx_fixup+0x6c/0xb0 drivers/net/usb/cdc_ncm.c:1407
 usbnet_start_xmit+0x109/0x18a0 drivers/net/usb/usbnet.c:1363
 __netdev_start_xmit include/linux/netdevice.h:4519 [inline]
 netdev_start_xmit include/linux/netdevice.h:4533 [inline]
 xmit_one+0xfa/0x4a0 net/core/dev.c:3209
 dev_hard_start_xmit+0xac/0x1b0 net/core/dev.c:3225
 sch_direct_xmit+0x28c/0xa20 net/sched/sch_generic.c:336
 qdisc_restart net/sched/sch_generic.c:401 [inline]
 __qdisc_run+0x245/0x420 net/sched/sch_generic.c:409
 qdisc_run include/net/pkt_sched.h:122 [inline]
 __dev_xmit_skb net/core/dev.c:3401 [inline]
 __dev_queue_xmit+0xd89/0x2a20 net/core/dev.c:3755
 neigh_output include/net/neighbour.h:525 [inline]
 ip6_finish_output2+0xfb9/0x18d0 net/ipv6/ip6_output.c:144
 NF_HOOK_COND include/linux/netfilter.h:297 [inline]
 ip6_output+0x1c1/0x420 net/ipv6/ip6_output.c:242
 dst_output include/net/dst.h:444 [inline]
 NF_HOOK include/linux/netfilter.h:308 [inline]
 mld_sendpack+0x5e1/0xb00 net/ipv6/mcast.c:1679
 mld_send_cr net/ipv6/mcast.c:1975 [inline]
 mld_ifc_timer_expire+0x864/0xc50 net/ipv6/mcast.c:2474
 call_timer_fn+0x31/0x350 kernel/time/timer.c:1418
 expire_timers+0x21e/0x400 kernel/time/timer.c:1463
 __run_timers+0x5e0/0x700 kernel/time/timer.c:1787
 run_timer_softirq+0x46/0x80 kernel/time/timer.c:1800
 __do_softirq+0x23e/0x643 kernel/softirq.c:292
 invoke_softirq kernel/softirq.c:373 [inline]
 irq_exit+0x195/0x1c0 kernel/softirq.c:413
 exiting_irq arch/x86/include/asm/apic.h:538 [inline]
 smp_apic_timer_interrupt+0x113/0x440 arch/x86/kernel/apic/apic.c:1150
 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:831
 </IRQ>
RIP: 0010:putname+0x4b/0x150 fs/namei.c:255
Code: 89 fd 49 c1 ed 03 43 8a 44 25 00 84 c0 0f 85 ce 00 00 00 41 8b 1f bf 01 00 00 00 89 de e8 7d fe ca ff 85 db 0f 8e f3 00 00 00 <8d> 6b ff 43 8a 44 25 00 84 c0 0f 85 c5 00 00 00 41 89 2f bf 01 00
RSP: 0018:ffff8881dcbc7dc8 EFLAGS: 00000202 ORIG_RAX: ffffffffffffff13
RAX: ffffffff819a4400 RBX: 0000000000000001 RCX: 0000000000000000
RDX: ffff8881ddb00fc0 RSI: 0000000000000001 RDI: 0000000000000001
RBP: ffff8881dcbc7f10 R08: ffffffff819a44a3 R09: ffff8881dcbc7d60
R10: ffffed103b978fb0 R11: 1ffff1103b978fac R12: dffffc0000000000
R13: 1ffff1103be6b222 R14: ffff8881df359100 R15: ffff8881df359110
 do_sys_open+0x63e/0x7e0 fs/open.c:1122
 do_syscall_64+0xcb/0x1c0 arch/x86/entry/common.c:290
 entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x7f14479eb697
Code: 25 00 00 41 00 3d 00 00 41 00 74 37 64 8b 04 25 18 00 00 00 85 c0 75 5b 44 89 e2 48 89 ee bf 9c ff ff ff b8 01 01 00 00 0f 05 <48> 3d 00 f0 ff ff 0f 87 85 00 00 00 48 83 c4 68 5d 41 5c c3 0f 1f
RSP: 002b:00007ffcd049b8e0 EFLAGS: 00000246 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 000055cc05e73860 RCX: 00007f14479eb697
RDX: 0000000000080000 RSI: 00007ffcd049b9f8 RDI: 00000000ffffff9c
RBP: 00007ffcd049b9f8 R08: 000055cc04d8de6a R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000080000
R13: 000055cc05e73950 R14: 00007ffcd049b9f8 R15: 0000000000000002
Modules linked in:
---[ end trace 044dc00b2e9ac07d ]---
RIP: 0010:skb_panic+0x14a/0x150 net/core/skbuff.c:105
Code: f4 2e 85 48 8b 74 24 08 48 8b 54 24 10 8b 0c 24 44 8b 44 24 04 49 89 e9 31 c0 53 41 55 41 54 41 57 e8 c1 8d d0 00 48 83 c4 20 <0f> 0b 0f 1f 40 00 55 41 57 41 56 41 55 41 54 53 48 83 ec 68 4d 89
RSP: 0018:ffff8881f6f09048 EFLAGS: 00010286
RAX: 0000000000000087 RBX: ffffffff852ef500 RCX: 383a564d35436100
RDX: 0000000080000703 RSI: 0000000080000703 RDI: 0000000000000000
RBP: ffff8881e1266800 R08: ffffffff814e34d7 R09: 0000000000000003
R10: ffffed103ede117d R11: 1ffff1103ede117c R12: 00000000000000b8
R13: 0000000000000080 R14: dffffc0000000000 R15: ffff8881e1266800
FS:  00007f1447894840(0000) GS:ffff8881f6f00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffedeb6dfb8 CR3: 00000001dc9d2000 CR4: 00000000003406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess):
   0:	89 fd                	mov    %edi,%ebp
   2:	49 c1 ed 03          	shr    $0x3,%r13
   6:	43 8a 44 25 00       	mov    0x0(%r13,%r12,1),%al
   b:	84 c0                	test   %al,%al
   d:	0f 85 ce 00 00 00    	jne    0xe1
  13:	41 8b 1f             	mov    (%r15),%ebx
  16:	bf 01 00 00 00       	mov    $0x1,%edi
  1b:	89 de                	mov    %ebx,%esi
  1d:	e8 7d fe ca ff       	callq  0xffcafe9f
  22:	85 db                	test   %ebx,%ebx
  24:	0f 8e f3 00 00 00    	jle    0x11d
* 2a:	8d 6b ff             	lea    -0x1(%rbx),%ebp <-- trapping instruction
  2d:	43 8a 44 25 00       	mov    0x0(%r13,%r12,1),%al
  32:	84 c0                	test   %al,%al
  34:	0f 85 c5 00 00 00    	jne    0xff
  3a:	41 89 2f             	mov    %ebp,(%r15)
  3d:	bf                   	.byte 0xbf
  3e:	01 00                	add    %eax,(%rax)

Crashes (240):
Manager Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Title
ci2-android-5-4-kasan 2022/11/23 16:40 android12-5.4 c80a5b2e7f63 52fdf57a .config log report syz C kernel BUG in cdc_ncm_fill_tx_frame
ci2-android-5-4-kasan 2022/03/08 05:23 android12-5.4 8a3679a75730 7bdd8b2c .config log report syz C kernel BUG in cdc_ncm_fill_tx_frame
ci2-android-5-4-kasan 2022/01/20 10:30 android12-5.4 946eff433f93 5da9499f .config log report syz C kernel BUG in __ip6_append_data
ci2-android-5-4-kasan 2020/09/21 02:56 https://android.googlesource.com/kernel/common android-5.4 63d1c2f0b547 9564d2e9 .config log report syz C
ci2-android-5-4-kasan 2020/01/23 01:30 https://android.googlesource.com/kernel/common android-5.4 8173487568f1 3334d684 .config log report syz C
ci2-android-5-4-kasan 2022/03/09 20:09 android12-5.4 2d28921044b9 9e8eaa75 .config log report syz kernel BUG in cdc_ncm_fill_tx_frame
ci2-android-5-4-kasan 2021/10/21 22:07 android12-5.4 eb4a5a5dbd5b 55f90bc6 .config log report syz kernel BUG in cdc_ncm_fill_tx_frame
ci2-android-5-4-kasan 2022/11/14 04:59 android12-5.4 5a34019eb955 7ba4d859 .config log report info kernel BUG in add_grec
ci2-android-5-4-kasan 2022/11/03 05:22 android12-5.4 63b53ec12f87 7a2ebf95 .config log report info kernel BUG in add_grec
ci2-android-5-4-kasan 2022/10/27 13:13 android12-5.4 035e4939365c 5c716ff6 .config log report info kernel BUG in add_grec
ci2-android-5-4-kasan 2022/10/26 18:03 android12-5.4 035e4939365c 86777b7f .config log report info kernel BUG in add_grec
ci2-android-5-4-kasan 2022/10/26 04:38 android12-5.4 035e4939365c 2159e4d2 .config log report info kernel BUG in add_grec
ci2-android-5-4-kasan 2022/10/22 07:07 android12-5.4 8c70a830a157 c0b80a55 .config log report info kernel BUG in add_grec
ci2-android-5-4-kasan 2022/10/05 21:38 android12-5.4 cc4340dfc7b2 2c6543ad .config log report info kernel BUG in add_grec
ci2-android-5-4-kasan 2022/10/05 03:44 android12-5.4 cc4340dfc7b2 267e3bb1 .config log report info kernel BUG in add_grec
ci2-android-5-4-kasan 2022/09/30 17:51 android12-5.4 3ee2a37108c8 feb56351 .config log report info kernel BUG in add_grec
ci2-android-5-4-kasan 2022/09/28 19:40 android12-5.4 871bb50ab5b1 a41a2080 .config log report info kernel BUG in add_grec
ci2-android-5-4-kasan 2022/09/26 09:29 android12-5.4 def19b1cf16c d59ba983 .config log report info kernel BUG in add_grec
ci2-android-5-4-kasan 2022/09/26 08:15 android12-5.4 def19b1cf16c d59ba983 .config log report info kernel BUG in add_grec
ci2-android-5-4-kasan 2022/09/26 02:33 android12-5.4 def19b1cf16c 0042f2b4 .config log report info kernel BUG in add_grec
ci2-android-5-4-kasan 2022/09/25 18:27 android12-5.4 def19b1cf16c 0042f2b4 .config log report info kernel BUG in add_grec
ci2-android-5-4-kasan 2022/09/24 02:19 android12-5.4 def19b1cf16c 0042f2b4 .config log report info kernel BUG in add_grec
ci2-android-5-4-kasan 2022/09/20 17:07 android12-5.4 def19b1cf16c c4b8ccfd .config log report info kernel BUG in add_grec
ci2-android-5-4-kasan 2022/09/17 03:11 android12-5.4 f3665979a8e7 dd9a85ff .config log report info kernel BUG in add_grec
ci2-android-5-4-kasan 2022/09/14 22:25 android12-5.4 4872bd9bf0d3 b884348d .config log report info kernel BUG in add_grec
ci2-android-5-4-kasan 2022/09/13 21:15 android12-5.4 704c7d053806 b884348d .config log report info kernel BUG in add_grec
ci2-android-5-4-kasan 2022/09/07 12:23 android12-5.4 704c7d053806 c5b7bc57 .config log report info kernel BUG in add_grec
ci2-android-5-4-kasan 2022/09/03 02:35 android12-5.4 f0306959ab7c 49e94a20 .config log report info kernel BUG in add_grec
ci2-android-5-4-kasan 2022/08/29 15:43 android12-5.4 f0306959ab7c d7593c58 .config log report info kernel BUG in add_grec
ci2-android-5-4-kasan 2022/08/26 15:14 android12-5.4 57ad627318ff e5a303f1 .config log report info kernel BUG in add_grec
ci2-android-5-4-kasan 2022/08/24 12:29 android12-5.4 27e532874a0e 514514f6 .config log report info kernel BUG in add_grec
ci2-android-5-4-kasan 2022/08/21 17:37 android12-5.4 f3c75e616e3f 26a13b38 .config log report info kernel BUG in add_grec
ci2-android-5-4-kasan 2022/08/19 21:21 android12-5.4 c991311c3375 26a13b38 .config log report info kernel BUG in add_grec
ci2-android-5-4-kasan 2022/08/19 09:43 android12-5.4 c991311c3375 26a13b38 .config log report info kernel BUG in add_grec
ci2-android-5-4-kasan 2022/08/16 20:17 android12-5.4 2bf0b614f0fb 9e4b39c2 .config log report info kernel BUG in add_grec
ci2-android-5-4-kasan 2022/08/15 17:36 android12-5.4 2bf0b614f0fb 8dfcaa3d .config log report info kernel BUG in add_grec
ci2-android-5-4-kasan 2022/08/15 10:30 android12-5.4 2bf0b614f0fb 8dfcaa3d .config log report info kernel BUG in add_grec
ci2-android-5-4-kasan 2022/08/14 20:18 android12-5.4 2bf0b614f0fb 8dfcaa3d .config log report info kernel BUG in add_grec
ci2-android-5-4-kasan 2022/08/12 21:39 android12-5.4 2bf0b614f0fb 8dfcaa3d .config log report info kernel BUG in add_grec
ci2-android-5-4-kasan 2022/08/11 07:29 android12-5.4 2bf0b614f0fb a6201f11 .config log report info kernel BUG in add_grec
ci2-android-5-4-kasan 2022/08/05 21:10 android12-5.4 19a66b6f3cd8 e853abd9 .config log report info kernel BUG in mld_newpack
ci2-android-5-4-kasan 2022/08/01 12:57 android12-5.4 2bde2e268ec7 fef302b1 .config log report info kernel BUG in mld_newpack
ci2-android-5-4-kasan 2022/07/29 22:23 android12-5.4 2bde2e268ec7 fef302b1 .config log report info kernel BUG in mld_newpack
ci2-android-5-4-kasan 2022/07/15 17:52 android12-5.4 330fa791a029 5d921b08 .config log report info kernel BUG in mld_newpack
ci2-android-5-4-kasan 2022/07/13 08:47 android12-5.4 337727eae73d 5d921b08 .config log report info kernel BUG in add_grec
ci2-android-5-4-kasan 2022/07/11 02:58 android12-5.4 569d38047a0f b5765a15 .config log report info kernel BUG in add_grec
ci2-android-5-4-kasan 2022/06/24 11:32 android12-5.4 9ce4508d6de9 a371c43c .config log report info kernel BUG in add_grec
ci2-android-5-4-kasan 2022/06/22 10:38 android12-5.4 4cc9c9d71eec 0fc5c330 .config log report info kernel BUG in add_grec
ci2-android-5-4-kasan 2022/06/11 04:04 android12-5.4 77dc925ddffb 0d5abf15 .config log report info kernel BUG in add_grec
ci2-android-5-4-kasan 2022/06/08 19:15 android12-5.4 77dc925ddffb 0d5abf15 .config log report info kernel BUG in mld_newpack
ci2-android-5-4-kasan 2022/06/07 06:43 android12-5.4 7dee356a61d0 c8857892 .config log report info kernel BUG in add_grec
ci2-android-5-4-kasan 2022/06/06 16:45 android12-5.4 3716b22823c5 c8857892 .config log report info kernel BUG in mld_newpack
ci2-android-5-4-kasan 2022/06/02 11:20 android12-5.4 a4d27a2c85c9 6e12f05f .config log report info kernel BUG in add_grec
ci2-android-5-4-kasan 2022/06/01 18:07 android12-5.4 8bb187386eea b4bc6a3d .config log report info kernel BUG in add_grec
ci2-android-5-4-kasan 2022/05/25 09:05 android12-5.4 45f8ea054fd3 647c0e27 .config log report info kernel BUG in add_grec
ci2-android-5-4-kasan 2022/05/21 08:36 android12-5.4 4958d038706e 7268fa62 .config log report info kernel BUG in add_grec
ci2-android-5-4-kasan 2022/05/20 16:14 android12-5.4 4958d038706e bd37ad7e .config log report info kernel BUG in add_grec
ci2-android-5-4-kasan 2022/03/12 16:33 android12-5.4 db2bb2db5424 9e8eaa75 .config log report info kernel BUG in cdc_ncm_fill_tx_frame
ci2-android-5-4-kasan 2021/02/14 06:18 android12-5.4 dbfedfa31471 98682e5e .config log report info kernel BUG in xfrm_state_find
ci2-android-5-4-kasan 2021/01/17 10:54 android12-5.4 dc04463953b2 813be542 .config log report info
ci2-android-5-4-kasan 2020/01/12 09:42 https://android.googlesource.com/kernel/common android-5.4 f5f770e495ba 4c04afaa .config log report
* Struck through repros no longer work on HEAD.