syzbot


WARNING in fib6_add

Status: auto-obsoleted due to no activity on 2024/03/22 05:58
Reported-by: syzbot+e5389639a271451d71c8@syzkaller.appspotmail.com
First crash: 513d, last: 344d
Fix bisection: failed (error log, bisect log)
  
Bug presence (1)
Date Name Commit Repro Result
2023/12/26 upstream (ToT) fbafc3e621c3 C Didn't crash
Similar bugs (7)
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
upstream WARNING in fib6_add (5) net C done 6 349d 512d 25/28 fixed on 2024/01/22 01:16
upstream WARNING in fib6_add net C 8225 2567d 2591d 3/28 fixed on 2017/11/28 03:36
upstream WARNING in fib6_add (4) net 2 1663d 1680d 0/28 auto-closed as invalid on 2020/08/31 02:33
linux-6.1 WARNING in fib6_add C done 2 345d 512d 3/3 fixed on 2024/01/11 06:28
upstream WARNING in fib6_add (2) net 11 2041d 2183d 0/28 auto-closed as invalid on 2019/10/17 17:19
upstream WARNING in fib6_add (3) net 1 1758d 1758d 0/28 closed as invalid on 2020/02/24 20:17
linux-4.19 WARNING in fib6_add 1 1930d 1930d 0/1 auto-closed as invalid on 2019/12/07 20:56

Sample crash report:
RBP: 00007ffd1123c410 R08: 00007ffd1123c167 R09: 0000555500000000
R10: 0000000000000001 R11: 0000000000000246 R12: 0000000000000003
R13: 00007ffd1123c3e0 R14: 0000000000000001 R15: 00007ffd1123c410
 </TASK>
------------[ cut here ]------------
WARNING: CPU: 1 PID: 3493 at net/ipv6/ip6_fib.c:1506 fib6_add+0x318e/0x3c80
Modules linked in:
CPU: 1 PID: 3493 Comm: syz-executor422 Not tainted 5.15.127-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/26/2023
RIP: 0010:fib6_add+0x318e/0x3c80 net/ipv6/ip6_fib.c:1506
Code: 8b 94 24 80 00 00 00 e8 a0 1e 00 00 48 85 c0 74 14 49 89 c6 e8 b3 0d 81 f8 eb 5b e8 ac 0d 81 f8 e9 c9 00 00 00 e8 a2 0d 81 f8 <0f> 0b 48 b8 00 00 00 00 00 fc ff df 48 8b 4c 24 38 80 3c 01 00 74
RSP: 0018:ffffc90002b7f780 EFLAGS: 00010293
RAX: ffffffff88ff063e RBX: ffffc90002b7fad0 RCX: ffff8880131d1dc0
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000
RBP: ffffc90002b7f9a0 R08: ffffffff88ff2765 R09: ffffed100f44ef86
R10: 0000000000000000 R11: dffffc0000000001 R12: ffff8880723b24a0
R13: 1ffff1100e476494 R14: ffff88807a277c00 R15: 00000000ffffffff
FS:  000055555647a380(0000) GS:ffff8880b9b00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020000340 CR3: 00000000720bb000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 __ip6_ins_rt net/ipv6/route.c:1302 [inline]
 ip6_route_add+0x84/0x120 net/ipv6/route.c:3872
 ipv6_route_ioctl+0x521/0x7b0 net/ipv6/route.c:4492
 inet6_ioctl+0x1e1/0x240 net/ipv6/af_inet6.c:580
 sock_do_ioctl+0x11d/0x5a0 net/socket.c:1121
 sock_ioctl+0x47f/0x770 net/socket.c:1238
 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:874 [inline]
 __se_sys_ioctl+0xf1/0x160 fs/ioctl.c:860
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x61/0xcb
RIP: 0033:0x7f7403101619
Code: 48 83 c4 28 c3 e8 d7 19 00 00 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 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffd1123c3c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 00007f7403101619
RDX: 0000000020000000 RSI: 000000000000890b RDI: 0000000000000005
RBP: 00007ffd1123c410 R08: 00007ffd1123c167 R09: 0000555500000000
R10: 0000000000000001 R11: 0000000000000246 R12: 0000000000000003
R13: 00007ffd1123c3e0 R14: 0000000000000001 R15: 00007ffd1123c410
 </TASK>

Crashes (4):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2023/08/20 07:47 linux-5.15.y f6f7927ac664 d216d8a0 .config console log report syz C [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in fib6_add
2023/06/27 11:36 linux-5.15.y f67653019430 4cd5bb25 .config console log report syz C [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 WARNING in fib6_add
2023/12/13 05:57 linux-5.15.y 8a1d809b0545 ebcad15c .config console log report info ci2-linux-5-15-kasan-perf WARNING in fib6_add
2023/06/27 06:51 linux-5.15.y f67653019430 4cd5bb25 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 WARNING in fib6_add
* Struck through repros no longer work on HEAD.