syzbot


kernel BUG in pn_socket_autobind

Status: auto-closed as invalid on 2021/08/07 18:14
Reported-by: syzbot+a34284622dd093f2f7c1@syzkaller.appspotmail.com
First crash: 1195d, last: 1195d
Similar bugs (2)
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
linux-4.19 kernel BUG in pn_socket_autobind (2) C error 27 649d 1060d 0/1 upstream: reported C repro on 2021/08/23 00:08
upstream kernel BUG at net/phonet/socket.c:LINE! net C inconclusive 168 939d 1559d 20/27 fixed on 2022/03/08 16:11

Sample crash report:
------------[ cut here ]------------
kernel BUG at net/phonet/socket.c:226!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
CPU: 1 PID: 27791 Comm: syz-executor.2 Not tainted 4.19.185-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:pn_socket_autobind net/phonet/socket.c:226 [inline]
RIP: 0010:pn_socket_autobind+0x13c/0x160 net/phonet/socket.c:215
Code: 44 05 00 00 00 00 00 48 8b 44 24 58 65 48 2b 04 25 28 00 00 00 75 26 48 83 c4 60 44 89 e0 5b 5d 41 5c 41 5d c3 e8 b4 84 fe f9 <0f> 0b e8 cd 44 34 fa eb 9f e8 e6 45 34 fa e9 6d ff ff ff e8 0c cc
RSP: 0018:ffff88803a6bfc38 EFLAGS: 00010216
RAX: 0000000000040000 RBX: 0000000000000000 RCX: ffffc90009f25000
RDX: 00000000000000a4 RSI: ffffffff8763d8ac RDI: 0000000000000003
RBP: 1ffff110074d7f87 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000003 R11: 0000000000000000 R12: 0000000000000000
R13: dffffc0000000000 R14: 0000000000000010 R15: 7fffffffffffffff
FS:  00007f0dfef83700(0000) GS:ffff8880ba100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fc778e5cfe8 CR3: 00000000408f4000 CR4: 00000000001426e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 pn_socket_connect+0x100/0x8c0 net/phonet/socket.c:240
 __sys_connect+0x265/0x2c0 net/socket.c:1663
 __do_sys_connect net/socket.c:1674 [inline]
 __se_sys_connect net/socket.c:1671 [inline]
 __x64_sys_connect+0x6f/0xb0 net/socket.c:1671
 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x466459
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 bc ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f0dfef83188 EFLAGS: 00000246 ORIG_RAX: 000000000000002a
RAX: ffffffffffffffda RBX: 000000000056bf60 RCX: 0000000000466459
RDX: 0000000000000010 RSI: 0000000020000000 RDI: 0000000000000003
RBP: 00000000004bf9fb R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 000000000056bf60
R13: 00007ffeb4c60adf R14: 00007f0dfef83300 R15: 0000000000022000
Modules linked in:
---[ end trace 0f8a4e273248a6a5 ]---
BTRFS warning (device <unknown>): duplicate device /dev/loop1 devid 1 generation 7 scanned by syz-executor.1 (27790)
BTRFS info (device loop4): disk space caching is enabled
RIP: 0010:pn_socket_autobind net/phonet/socket.c:226 [inline]
RIP: 0010:pn_socket_autobind+0x13c/0x160 net/phonet/socket.c:215
BTRFS info (device loop4): has skinny extents
Code: 44 05 00 00 00 00 00 48 8b 44 24 58 65 48 2b 04 25 28 00 00 00 75 26 48 83 c4 60 44 89 e0 5b 5d 41 5c 41 5d c3 e8 b4 84 fe f9 <0f> 0b e8 cd 44 34 fa eb 9f e8 e6 45 34 fa e9 6d ff ff ff e8 0c cc
BTRFS warning (device <unknown>): duplicate device /dev/loop1 devid 1 generation 7 scanned by systemd-udevd (27775)
RSP: 0018:ffff88803a6bfc38 EFLAGS: 00010216
BTRFS warning (device <unknown>): duplicate device /dev/loop3 devid 1 generation 7 scanned by syz-executor.3 (27809)
RAX: 0000000000040000 RBX: 0000000000000000 RCX: ffffc90009f25000
RDX: 00000000000000a4 RSI: ffffffff8763d8ac RDI: 0000000000000003
RBP: 1ffff110074d7f87 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000003 R11: 0000000000000000 R12: 0000000000000000
R13: dffffc0000000000 R14: 0000000000000010 R15: 7fffffffffffffff
FS:  00007f0dfef83700(0000) GS:ffff8880ba100000(0000) knlGS:0000000000000000
BTRFS warning (device <unknown>): duplicate device /dev/loop3 devid 1 generation 7 scanned by systemd-udevd (27761)
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f6bcbd3b718 CR3: 00000000408f4000 CR4: 00000000001426e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400

Crashes (1):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2021/04/09 18:13 linux-4.19.y b4454811f122 6a81331a .config console log report info ci2-linux-4-19 kernel BUG in pn_socket_autobind
* Struck through repros no longer work on HEAD.