general protection fault in skb

Kernel	Title	Repro	Cause bisect	Fix bisect	Count	Last	Reported	Patched	Status
upstream	general protection fault in skb_unlink net	C	done	error	8	589d	2150d	22/26	fixed on 2023/02/24 13:50
linux-4.14	general protection fault in skb_unlink	C	done	error	2	1427d	1608d	0/1	upstream: reported C repro on 2019/11/24 07:04

upstream

general protection fault in skb_unlink net

done

error

589d

2150d

22/26

fixed on 2023/02/24 13:50

linux-4.14

general protection fault in skb_unlink

done

error

1427d

1608d

0/1

upstream: reported C repro on 2019/11/24 07:04


Created	Duration	User	Repo	Result
2021/10/21 17:58	12m	bisect fix	linux-4.19.y	error job log (0)
2021/09/21 17:31	27m	bisect fix	linux-4.19.y	job log (0) log
2021/08/22 13:26	27m	bisect fix	linux-4.19.y	job log (0) log
2021/07/23 12:54	32m	bisect fix	linux-4.19.y	job log (0) log
2021/06/23 12:11	21m	bisect fix	linux-4.19.y	job log (0) log
2021/05/24 11:42	28m	bisect fix	linux-4.19.y	job log (0) log
2021/04/24 11:05	31m	bisect fix	linux-4.19.y	job log (0) log
2021/03/25 04:35	22m	bisect fix	linux-4.19.y	job log (0) log
2021/02/23 03:51	22m	bisect fix	linux-4.19.y	job log (0) log
2021/02/19 01:40	19m	bisect fix	linux-4.19.y	error job log (0)
2021/02/16 18:35	1m	bisect fix	linux-4.19.y	error job log (0)
2021/01/17 18:11	23m	bisect fix	linux-4.19.y	job log (0) log
2020/12/18 17:44	24m	bisect fix	linux-4.19.y	job log (0) log
2020/11/18 17:20	23m	bisect fix	linux-4.19.y	job log (0) log
2020/10/19 16:55	25m	bisect fix	linux-4.19.y	job log (0) log
2020/09/19 16:31	23m	bisect fix	linux-4.19.y	job log (0) log
2020/08/20 16:05	26m	bisect fix	linux-4.19.y	job log (0) log
2020/07/21 15:39	25m	bisect fix	linux-4.19.y	job log (0) log
2020/06/21 15:16	23m	bisect fix	linux-4.19.y	job log (0) log
2020/05/22 14:50	25m	bisect fix	linux-4.19.y	job log (0) log
2020/04/22 14:25	24m	bisect fix	linux-4.19.y	job log (0) log
2020/03/23 13:59	26m	bisect fix	linux-4.19.y	job log (0) log
2020/02/22 13:17	24m	bisect fix	linux-4.19.y	job log (0) log
2020/01/23 09:04	25m	bisect fix	linux-4.19.y	job log (0) log
2019/12/24 08:39	24m	bisect fix	linux-4.19.y	job log (0) log

audit: type=1400 audit(1574584202.698:41): avc: denied { prog_run } for pid=7631 comm="syz-executor501" scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tclass=bpf permissive=1 kasan: CONFIG_KASAN_INLINE enabled kasan: GPF could be caused by NULL-ptr deref or user memory access general protection fault: 0000 [#1] PREEMPT SMP KASAN CPU: 1 PID: 7635 Comm: syz-executor501 Not tainted 4.19.85-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:__write_once_size include/linux/compiler.h:220 [inline] RIP: 0010:__skb_unlink include/linux/skbuff.h:1900 [inline] RIP: 0010:skb_unlink+0xc4/0x160 net/core/skbuff.c:2945 Code: 00 00 49 8d 7d 08 4c 8b 63 08 48 b8 00 00 00 00 00 fc ff df 48 c7 43 08 00 00 00 00 48 89 fa 48 c7 03 00 00 00 00 48 c1 ea 03 <80> 3c 02 00 75 58 4c 89 e2 4d 89 65 08 48 b8 00 00 00 00 00 fc ff RSP: 0018:ffff88809ee67908 EFLAGS: 00010002 RAX: dffffc0000000000 RBX: ffff8880962d3c80 RCX: ffffffff81531da8 RDX: 0000000000000001 RSI: 0000000000000282 RDI: 0000000000000008 RBP: ffff88809ee67930 R08: 1ffff110131aab3c R09: ffffed10131aab3d R10: ffffed10131aab3c R11: ffff888098d559e3 R12: 0000000000000000 R13: 0000000000000000 R14: ffff888098d559e0 R15: ffff88809ee679d8 FS: 00007ff7a8648700(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000055e4628f21b0 CR3: 00000000a55b5000 CR4: 00000000001406e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: kcm_recvmsg+0x462/0x560 net/kcm/kcmsock.c:1160 sock_recvmsg_nosec+0x89/0xb0 net/socket.c:795 ___sys_recvmsg+0x271/0x580 net/socket.c:2277 __sys_recvmmsg+0x27e/0x790 net/socket.c:2389 do_sys_recvmmsg net/socket.c:2465 [inline] do_sys_recvmmsg+0x181/0x1a0 net/socket.c:2454 __do_sys_recvmmsg net/socket.c:2483 [inline] __se_sys_recvmmsg net/socket.c:2479 [inline] __x64_sys_recvmmsg+0xbe/0x150 net/socket.c:2479 do_syscall_64+0xfd/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x448b29 Code: e8 0c 1b 03 00 48 83 c4 18 c3 0f 1f 80 00 00 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 3b 0c fc ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007ff7a8647ce8 EFLAGS: 00000246 ORIG_RAX: 000000000000012b RAX: ffffffffffffffda RBX: 00000000006dfc48 RCX: 0000000000448b29 RDX: 0400000000000310 RSI: 0000000020003540 RDI: 0000000000000005 RBP: 00000000006dfc40 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00000000006dfc4c R13: 00007ffc3828db3f R14: 00007ff7a86489c0 R15: 000000000000002d Modules linked in: ---[ end trace 5cc8695cf11eea5f ]--- RIP: 0010:__write_once_size include/linux/compiler.h:220 [inline] RIP: 0010:__skb_unlink include/linux/skbuff.h:1900 [inline] RIP: 0010:skb_unlink+0xc4/0x160 net/core/skbuff.c:2945 Code: 00 00 49 8d 7d 08 4c 8b 63 08 48 b8 00 00 00 00 00 fc ff df 48 c7 43 08 00 00 00 00 48 89 fa 48 c7 03 00 00 00 00 48 c1 ea 03 <80> 3c 02 00 75 58 4c 89 e2 4d 89 65 08 48 b8 00 00 00 00 00 fc ff RSP: 0018:ffff88809ee67908 EFLAGS: 00010002 RAX: dffffc0000000000 RBX: ffff8880962d3c80 RCX: ffffffff81531da8 RDX: 0000000000000001 RSI: 0000000000000282 RDI: 0000000000000008 RBP: ffff88809ee67930 R08: 1ffff110131aab3c R09: ffffed10131aab3d R10: ffffed10131aab3c R11: ffff888098d559e3 R12: 0000000000000000 R13: 0000000000000000 R14: ffff888098d559e0 R15: ffff88809ee679d8 FS: 00007ff7a8648700(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000055e4628f21b0 CR3: 00000000a55b5000 CR4: 00000000001406e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400