general protection fault in skb

Kernel	Title	Repro	Cause bisect	Fix bisect	Count	Last	Reported	Patched	Status
upstream	general protection fault in skb_clone	syz			3	2684d	2684d	3/28	fixed on 2017/10/24 19:00
upstream	BUG: unable to handle kernel paging request in skb_clone net				2	1226d	1271d	0/28	closed as invalid on 2021/10/04 21:36
upstream	general protection fault in skb_clone (3) net				44	1668d	1670d	15/28	fixed on 2020/07/17 17:58
linux-4.19	general protection fault in skb_clone	C		error	2	796d	1105d	0/1	upstream: reported C repro on 2021/12/12 07:38
upstream	general protection fault in skb_clone (4) net	C	unreliable		41	808d	1105d	0/28	closed as invalid on 2022/10/12 18:15
upstream	general protection fault in skb_clone (2) hams				1	1852d	1849d	0/28	auto-closed as invalid on 2020/03/25 12:28
upstream	general protection fault in skb_clone (5) net	C	done		7	782d	799d	22/28	fixed on 2023/02/24 13:50

Created	Duration	User	Repo	Result
2023/02/27 13:37	27m	bisect fix	linux-4.14.y	OK (0) job log log
2023/01/26 04:27	26m	bisect fix	linux-4.14.y	OK (0) job log log
2022/11/17 04:26	25m	bisect fix	linux-4.14.y	OK (0) job log log

Created

Duration

User

Patch

Repo

Result

2023/02/27 13:37

27m

bisect fix

linux-4.14.y

OK (0) job log log

2023/01/26 04:27

26m

bisect fix

linux-4.14.y

OK (0) job log log

2022/11/17 04:26

25m

bisect fix

linux-4.14.y

OK (0) job log log

RBP: 00007fffe50445f0 R08: 0000000000000000 R09: 0000000000000001 R10: 00007fffe5044367 R11: 0000000000000246 R12: 0000000000000003 R13: 00007fffe5044610 R14: 00007fffe5044600 R15: 00007fffe50445dc 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 Modules linked in: CPU: 1 PID: 8203 Comm: syz-executor246 Not tainted 4.14.295-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 task: ffff8880aff623c0 task.stack: ffff8880b00b8000 RIP: 0010:skb_clone+0xd8/0x9a0 net/core/skbuff.c:1283 RSP: 0018:ffff8880b00bf6b0 EFLAGS: 00010207 RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 0000000000000000 RDX: 0000000000000011 RSI: 0000000001080020 RDI: 0000000000000000 RBP: 000000000000008e R08: 0000000000000140 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: 0000000001080020 R13: ffff8880a5191f00 R14: ffff8880ab9ab280 R15: dffffc0000000000 FS: 00005555557a3300(0000) GS:ffff8880ba500000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f0bd7160ed0 CR3: 000000009e7f7000 CR4: 00000000003406e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: frame_get_stripped_skb net/hsr/hsr_forward.c:127 [inline] hsr_forward_do net/hsr/hsr_forward.c:285 [inline] hsr_forward_skb+0xdbb/0x19c0 net/hsr/hsr_forward.c:373 hsr_handle_frame+0x2e0/0x550 net/hsr/hsr_slave.c:50 __netif_receive_skb_core+0x730/0x2a30 net/core/dev.c:4428 __netif_receive_skb+0x27/0x1a0 net/core/dev.c:4512 netif_receive_skb_internal+0xd7/0x580 net/core/dev.c:4585 tun_rx_batched.isra.0+0x45c/0x710 drivers/net/tun.c:1234 tun_get_user+0x12ae/0x4710 drivers/net/tun.c:1594 tun_chr_write_iter+0xe8/0x1f0 drivers/net/tun.c:1625 call_write_iter include/linux/fs.h:1780 [inline] new_sync_write fs/read_write.c:469 [inline] __vfs_write+0x44c/0x630 fs/read_write.c:482 vfs_write+0x17f/0x4d0 fs/read_write.c:544 SYSC_write fs/read_write.c:590 [inline] SyS_write+0xf2/0x210 fs/read_write.c:582 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x46/0xbb RIP: 0033:0x7f0bd70ece83 RSP: 002b:00007fffe50445c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 00007f0bd70ece83 RDX: 0000000000000036 RSI: 0000000020000640 RDI: 00000000000000c8 RBP: 00007fffe50445f0 R08: 0000000000000000 R09: 0000000000000001 R10: 00007fffe5044367 R11: 0000000000000246 R12: 0000000000000003 R13: 00007fffe5044610 R14: 00007fffe5044600 R15: 00007fffe50445dc Code: be 07 00 00 f6 45 03 08 0f 85 ff 05 00 00 e8 60 a9 95 fb 48 8d ab 8e 00 00 00 48 b8 00 00 00 00 00 fc ff df 48 89 ea 48 c1 ea 03 <0f> b6 04 02 48 89 ea 83 e2 07 38 d0 7f 08 84 c0 0f 85 9f 07 00 RIP: skb_clone+0xd8/0x9a0 net/core/skbuff.c:1283 RSP: ffff8880b00bf6b0 ---[ end trace 8e3080fb750ee8ac ]--- ---------------- Code disassembly (best guess): 0: be 07 00 00 f6 mov $0xf6000007,%esi 5: 45 03 08 add (%r8),%r9d 8: 0f 85 ff 05 00 00 jne 0x60d e: e8 60 a9 95 fb callq 0xfb95a973 13: 48 8d ab 8e 00 00 00 lea 0x8e(%rbx),%rbp 1a: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax 21: fc ff df 24: 48 89 ea mov %rbp,%rdx 27: 48 c1 ea 03 shr $0x3,%rdx * 2b: 0f b6 04 02 movzbl (%rdx,%rax,1),%eax <-- trapping instruction 2f: 48 89 ea mov %rbp,%rdx 32: 83 e2 07 and $0x7,%edx 35: 38 d0 cmp %dl,%al 37: 7f 08 jg 0x41 39: 84 c0 test %al,%al 3b: 0f .byte 0xf 3c: 85 .byte 0x85 3d: 9f lahf 3e: 07 (bad)