[v5.15] kernel BUG in pn_socket_connect
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syzbot
May 3, 2026, 10:18:26 AM (5 days ago) May 3
to syzkaller...@googlegroups.com
Hello,
syzbot found the following issue on:
HEAD commit: ef251c45f1cd Linux 5.15.204
git tree: linux-5.15.y
console output: https://syzkaller.appspot.com/x/log.txt?x=10f2d748580000
kernel config: https://syzkaller.appspot.com/x/.config?x=353ae28c40b35af5
dashboard link: https://syzkaller.appspot.com/bug?extid=e4a1d15023d82a3ac68d
compiler: Debian clang version 21.1.8 (++20251221033036+2078da43e25a-1~exp1~20251221153213.50), Debian LLD 21.1.8
Unfortunately, I don't have any reproducer for this issue yet.
Downloadable assets:
disk image: https://storage.googleapis.com/syzbot-assets/bde897c3d01f/disk-ef251c45.raw.xz
vmlinux: https://storage.googleapis.com/syzbot-assets/51b2a5826cd1/vmlinux-ef251c45.xz
kernel image: https://storage.googleapis.com/syzbot-assets/cb95a5a40121/bzImage-ef251c45.xz
IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+e4a1d1...@syzkaller.appspotmail.com
netlink: 'syz.2.36': attribute type 2 has an invalid length.
------------[ cut here ]------------
kernel BUG at net/phonet/socket.c:213!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
CPU: 0 PID: 4416 Comm: syz.2.36 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026
RIP: 0010:pn_socket_autobind net/phonet/socket.c:213 [inline]
RIP: 0010:pn_socket_connect+0xb87/0xb90 net/phonet/socket.c:227
Code: 48 8b 7c 24 10 e9 68 fd ff ff 44 89 e1 80 e1 07 38 c1 0f 8c 17 fd ff ff 4c 89 e7 e8 e3 76 b2 f8 e9 0a fd ff ff e8 39 58 6d f8 <0f> 0b 0f 1f 80 00 00 00 00 55 48 89 e5 41 57 41 56 41 55 41 54 53
RSP: 0018:ffffc90002eafc40 EFLAGS: 00010283
RAX: ffffffff890bdc57 RBX: 0000000000000000 RCX: 0000000000080000
RDX: ffffc900055e9000 RSI: 0000000000000051 RDI: 0000000000000052
RBP: ffffc90002eafdb0 R08: ffff8880250a0d0b R09: 1ffff11004a141a1
R10: dffffc0000000000 R11: ffffed1004a141a2 R12: ffff888062af4818
R13: 1ffff920005d5f98 R14: dffffc0000000000 R15: 1ffff1100c55e903
FS: 00007f1691b566c0(0000) GS:ffff8880b9000000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ff01c06ae50 CR3: 000000007420e000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
<TASK>
__sys_connect_file net/socket.c:1932 [inline]
__sys_connect+0x3cb/0x450 net/socket.c:1949
__do_sys_connect net/socket.c:1959 [inline]
__se_sys_connect net/socket.c:1956 [inline]
__x64_sys_connect+0x76/0x80 net/socket.c:1956
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7f16938fcdd9
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 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 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f1691b56028 EFLAGS: 00000246 ORIG_RAX: 000000000000002a
RAX: ffffffffffffffda RBX: 00007f1693b75fa0 RCX: 00007f16938fcdd9
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000006
RBP: 00007f1693992d69 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f1693b76038 R14: 00007f1693b75fa0 R15: 00007fff05d0e488
</TASK>
Modules linked in:
---[ end trace d8896f762bb68bd7 ]---
RIP: 0010:pn_socket_autobind net/phonet/socket.c:213 [inline]
RIP: 0010:pn_socket_connect+0xb87/0xb90 net/phonet/socket.c:227
Code: 48 8b 7c 24 10 e9 68 fd ff ff 44 89 e1 80 e1 07 38 c1 0f 8c 17 fd ff ff 4c 89 e7 e8 e3 76 b2 f8 e9 0a fd ff ff e8 39 58 6d f8 <0f> 0b 0f 1f 80 00 00 00 00 55 48 89 e5 41 57 41 56 41 55 41 54 53
RSP: 0018:ffffc90002eafc40 EFLAGS: 00010283
RAX: ffffffff890bdc57 RBX: 0000000000000000 RCX: 0000000000080000
RDX: ffffc900055e9000 RSI: 0000000000000051 RDI: 0000000000000052
RBP: ffffc90002eafdb0 R08: ffff8880250a0d0b R09: 1ffff11004a141a1
R10: dffffc0000000000 R11: ffffed1004a141a2 R12: ffff888062af4818
R13: 1ffff920005d5f98 R14: dffffc0000000000 R15: 1ffff1100c55e903
FS: 00007f1691b566c0(0000) GS:ffff8880b9100000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f1153680000 CR3: 000000007420e000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
---
This report is generated by a bot. It may contain errors.
See https://goo.gl/tpsmEJ for more information about syzbot.
syzbot engineers can be reached at syzk...@googlegroups.com.
syzbot will keep track of this issue. See:
https://goo.gl/tpsmEJ#status for how to communicate with syzbot.
If the report is already addressed, let syzbot know by replying with:
#syz fix: exact-commit-title
If you want to overwrite report's subsystems, reply with:
#syz set subsystems: new-subsystem
(See the list of subsystem names on the web dashboard)
If the report is a duplicate of another one, reply with:
#syz dup: exact-subject-of-another-report
If you want to undo deduplication, reply with:
#syz undup
syzbot found the following issue on:
HEAD commit: ef251c45f1cd Linux 5.15.204
git tree: linux-5.15.y
console output: https://syzkaller.appspot.com/x/log.txt?x=10f2d748580000
kernel config: https://syzkaller.appspot.com/x/.config?x=353ae28c40b35af5
dashboard link: https://syzkaller.appspot.com/bug?extid=e4a1d15023d82a3ac68d
compiler: Debian clang version 21.1.8 (++20251221033036+2078da43e25a-1~exp1~20251221153213.50), Debian LLD 21.1.8
Unfortunately, I don't have any reproducer for this issue yet.
Downloadable assets:
disk image: https://storage.googleapis.com/syzbot-assets/bde897c3d01f/disk-ef251c45.raw.xz
vmlinux: https://storage.googleapis.com/syzbot-assets/51b2a5826cd1/vmlinux-ef251c45.xz
kernel image: https://storage.googleapis.com/syzbot-assets/cb95a5a40121/bzImage-ef251c45.xz
IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+e4a1d1...@syzkaller.appspotmail.com
netlink: 'syz.2.36': attribute type 2 has an invalid length.
------------[ cut here ]------------
kernel BUG at net/phonet/socket.c:213!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
CPU: 0 PID: 4416 Comm: syz.2.36 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026
RIP: 0010:pn_socket_autobind net/phonet/socket.c:213 [inline]
RIP: 0010:pn_socket_connect+0xb87/0xb90 net/phonet/socket.c:227
Code: 48 8b 7c 24 10 e9 68 fd ff ff 44 89 e1 80 e1 07 38 c1 0f 8c 17 fd ff ff 4c 89 e7 e8 e3 76 b2 f8 e9 0a fd ff ff e8 39 58 6d f8 <0f> 0b 0f 1f 80 00 00 00 00 55 48 89 e5 41 57 41 56 41 55 41 54 53
RSP: 0018:ffffc90002eafc40 EFLAGS: 00010283
RAX: ffffffff890bdc57 RBX: 0000000000000000 RCX: 0000000000080000
RDX: ffffc900055e9000 RSI: 0000000000000051 RDI: 0000000000000052
RBP: ffffc90002eafdb0 R08: ffff8880250a0d0b R09: 1ffff11004a141a1
R10: dffffc0000000000 R11: ffffed1004a141a2 R12: ffff888062af4818
R13: 1ffff920005d5f98 R14: dffffc0000000000 R15: 1ffff1100c55e903
FS: 00007f1691b566c0(0000) GS:ffff8880b9000000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ff01c06ae50 CR3: 000000007420e000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
<TASK>
__sys_connect_file net/socket.c:1932 [inline]
__sys_connect+0x3cb/0x450 net/socket.c:1949
__do_sys_connect net/socket.c:1959 [inline]
__se_sys_connect net/socket.c:1956 [inline]
__x64_sys_connect+0x76/0x80 net/socket.c:1956
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7f16938fcdd9
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 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 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f1691b56028 EFLAGS: 00000246 ORIG_RAX: 000000000000002a
RAX: ffffffffffffffda RBX: 00007f1693b75fa0 RCX: 00007f16938fcdd9
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000006
RBP: 00007f1693992d69 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f1693b76038 R14: 00007f1693b75fa0 R15: 00007fff05d0e488
</TASK>
Modules linked in:
---[ end trace d8896f762bb68bd7 ]---
RIP: 0010:pn_socket_autobind net/phonet/socket.c:213 [inline]
RIP: 0010:pn_socket_connect+0xb87/0xb90 net/phonet/socket.c:227
Code: 48 8b 7c 24 10 e9 68 fd ff ff 44 89 e1 80 e1 07 38 c1 0f 8c 17 fd ff ff 4c 89 e7 e8 e3 76 b2 f8 e9 0a fd ff ff e8 39 58 6d f8 <0f> 0b 0f 1f 80 00 00 00 00 55 48 89 e5 41 57 41 56 41 55 41 54 53
RSP: 0018:ffffc90002eafc40 EFLAGS: 00010283
RAX: ffffffff890bdc57 RBX: 0000000000000000 RCX: 0000000000080000
RDX: ffffc900055e9000 RSI: 0000000000000051 RDI: 0000000000000052
RBP: ffffc90002eafdb0 R08: ffff8880250a0d0b R09: 1ffff11004a141a1
R10: dffffc0000000000 R11: ffffed1004a141a2 R12: ffff888062af4818
R13: 1ffff920005d5f98 R14: dffffc0000000000 R15: 1ffff1100c55e903
FS: 00007f1691b566c0(0000) GS:ffff8880b9100000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f1153680000 CR3: 000000007420e000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
---
This report is generated by a bot. It may contain errors.
See https://goo.gl/tpsmEJ for more information about syzbot.
syzbot engineers can be reached at syzk...@googlegroups.com.
syzbot will keep track of this issue. See:
https://goo.gl/tpsmEJ#status for how to communicate with syzbot.
If the report is already addressed, let syzbot know by replying with:
#syz fix: exact-commit-title
If you want to overwrite report's subsystems, reply with:
#syz set subsystems: new-subsystem
(See the list of subsystem names on the web dashboard)
If the report is a duplicate of another one, reply with:
#syz dup: exact-subject-of-another-report
If you want to undo deduplication, reply with:
#syz undup
syzbot
May 3, 2026, 10:31:39 AM (5 days ago) May 3
to syzkaller...@googlegroups.com
Hello,
syzbot found the following issue on:
HEAD commit: 258cf62a6dfd Linux 6.6.137
syzbot found the following issue on:
git tree: linux-6.6.y
console output: https://syzkaller.appspot.com/x/log.txt?x=17b8f76c580000
kernel config: https://syzkaller.appspot.com/x/.config?x=c5b35c4db8465904
dashboard link: https://syzkaller.appspot.com/bug?extid=bf90b0f2f5f630e0e396
compiler: Debian clang version 21.1.8 (++20251221033036+2078da43e25a-1~exp1~20251221153213.50), Debian LLD 21.1.8
Unfortunately, I don't have any reproducer for this issue yet.
Downloadable assets:
disk image: https://storage.googleapis.com/syzbot-assets/8abd93876bdd/disk-258cf62a.raw.xz
Unfortunately, I don't have any reproducer for this issue yet.
Downloadable assets:
vmlinux: https://storage.googleapis.com/syzbot-assets/721d0cc7467a/vmlinux-258cf62a.xz
kernel image: https://storage.googleapis.com/syzbot-assets/7f2dfd911e3d/bzImage-258cf62a.xz
IMPORTANT: if you fix the issue, please add the following tag to the commit:
netlink: 'syz.0.1': attribute type 2 has an invalid length.
------------[ cut here ]------------
kernel BUG at net/phonet/socket.c:213!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
CPU: 1 PID: 5862 Comm: syz.0.1 Not tainted syzkaller #0
kernel BUG at net/phonet/socket.c:213!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026
RIP: 0010:pn_socket_autobind net/phonet/socket.c:213 [inline]
RIP: 0010:pn_socket_connect+0xb99/0xba0 net/phonet/socket.c:227
RIP: 0010:pn_socket_autobind net/phonet/socket.c:213 [inline]
Code: 48 8b 7c 24 10 e9 68 fd ff ff 44 89 e1 80 e1 07 38 c1 0f 8c 17 fd ff ff 4c 89 e7 e8 b1 34 24 f8 e9 0a fd ff ff e8 d7 fd cb f7 <0f> 0b 0f 1f 44 00 00 f3 0f 1e fa 55 48 89 e5 41 57 41 56 41 55 41
RSP: 0018:ffffc9000483fc40 EFLAGS: 00010283
RAX: ffffffff89bb2429 RBX: 0000000000000000 RCX: 0000000000080000
RDX: ffffc9000cb49000 RSI: 0000000000000031 RDI: 0000000000000032
RBP: ffffc9000483fdb0 R08: ffffffff8e8b19af R09: 1ffffffff1d16335
R10: dffffc0000000000 R11: fffffbfff1d16336 R12: ffff88805d683c18
R13: 1ffff92000907f98 R14: dffffc0000000000 R15: 1ffff1100bad0783
FS: 00007feda88d06c0(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f0a18a3c000 CR3: 000000002f767000 CR4: 00000000003506e0
Call Trace:
<TASK>
__sys_connect_file net/socket.c:2056 [inline]
__sys_connect+0x3da/0x470 net/socket.c:2073
__do_sys_connect net/socket.c:2083 [inline]
__se_sys_connect net/socket.c:2080 [inline]
__x64_sys_connect+0x7a/0x90 net/socket.c:2080
do_syscall_x64 arch/x86/entry/common.c:46 [inline]
do_syscall_64+0x55/0xa0 arch/x86/entry/common.c:76
entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7feda799cdd9
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 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 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007feda88d0028 EFLAGS: 00000246 ORIG_RAX: 000000000000002a
RAX: ffffffffffffffda RBX: 00007feda7c15fa0 RCX: 00007feda799cdd9
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000006
RBP: 00007feda7a32d69 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007feda7c16038 R14: 00007feda7c15fa0 R15: 00007ffea8246638
</TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:pn_socket_autobind net/phonet/socket.c:213 [inline]
RIP: 0010:pn_socket_connect+0xb99/0xba0 net/phonet/socket.c:227
Code: 48 8b 7c 24 10 e9 68 fd ff ff 44 89 e1 80 e1 07 38 c1 0f 8c 17 fd ff ff 4c 89 e7 e8 b1 34 24 f8 e9 0a fd ff ff e8 d7 fd cb f7 <0f> 0b 0f 1f 44 00 00 f3 0f 1e fa 55 48 89 e5 41 57 41 56 41 55 41
RSP: 0018:ffffc9000483fc40 EFLAGS: 00010283
RAX: ffffffff89bb2429 RBX: 0000000000000000 RCX: 0000000000080000
RDX: ffffc9000cb49000 RSI: 0000000000000031 RDI: 0000000000000032
RBP: ffffc9000483fdb0 R08: ffffffff8e8b19af R09: 1ffffffff1d16335
R10: dffffc0000000000 R11: fffffbfff1d16336 R12: ffff88805d683c18
R13: 1ffff92000907f98 R14: dffffc0000000000 R15: 1ffff1100bad0783
FS: 00007feda88d06c0(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055558e67da38 CR3: 000000002f767000 CR4: 00000000003506e0
syzbot
May 3, 2026, 10:36:26 AM (5 days ago) May 3
to syzkaller...@googlegroups.com
Hello,
syzbot found the following issue on:
HEAD commit: 4931e0e1673d Linux 6.1.170
syzbot found the following issue on:
git tree: linux-6.1.y
console output: https://syzkaller.appspot.com/x/log.txt?x=1729396a580000
kernel config: https://syzkaller.appspot.com/x/.config?x=f0605c5af04d7603
dashboard link: https://syzkaller.appspot.com/bug?extid=89b64c7e9fa924bcc92f
compiler: Debian clang version 21.1.8 (++20251221033036+2078da43e25a-1~exp1~20251221153213.50), Debian LLD 21.1.8
Unfortunately, I don't have any reproducer for this issue yet.
Downloadable assets:
disk image: https://storage.googleapis.com/syzbot-assets/4c1b2399e351/disk-4931e0e1.raw.xz
Unfortunately, I don't have any reproducer for this issue yet.
Downloadable assets:
vmlinux: https://storage.googleapis.com/syzbot-assets/feb034d7563a/vmlinux-4931e0e1.xz
kernel image: https://storage.googleapis.com/syzbot-assets/424a14bbc862/bzImage-4931e0e1.xz
IMPORTANT: if you fix the issue, please add the following tag to the commit:
netlink: 'syz.3.31': attribute type 2 has an invalid length.
------------[ cut here ]------------
kernel BUG at net/phonet/socket.c:213!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
CPU: 1 PID: 4580 Comm: syz.3.31 Not tainted syzkaller #0
kernel BUG at net/phonet/socket.c:213!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026
RIP: 0010:pn_socket_autobind net/phonet/socket.c:213 [inline]
RIP: 0010:pn_socket_connect+0xb87/0xb90 net/phonet/socket.c:227
RIP: 0010:pn_socket_autobind net/phonet/socket.c:213 [inline]
Code: 48 8b 7c 24 10 e9 68 fd ff ff 44 89 e1 80 e1 07 38 c1 0f 8c 17 fd ff ff 4c 89 e7 e8 73 05 6a f8 e9 0a fd ff ff e8 59 f9 18 f8 <0f> 0b 0f 1f 80 00 00 00 00 55 48 89 e5 41 57 41 56 41 55 41 54 53
RSP: 0018:ffffc90004387c40 EFLAGS: 00010283
RAX: ffffffff89697bf7 RBX: 0000000000000000 RCX: 0000000000080000
RDX: ffffc9000f412000 RSI: 0000000000000031 RDI: 0000000000000032
RBP: ffffc90004387db0 R08: ffff888072840d1b R09: 1ffff1100e5081a3
R10: dffffc0000000000 R11: ffffed100e5081a4 R12: ffff888073f3bc18
R13: 1ffff92000870f98 R14: dffffc0000000000 R15: 1ffff1100e7e7783
FS: 00007fc763fb76c0(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ff84374da08 CR3: 00000000269c4000 CR4: 00000000003526e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
<TASK>
__sys_connect_file net/socket.c:2010 [inline]
__sys_connect+0x3cb/0x450 net/socket.c:2027
__do_sys_connect net/socket.c:2037 [inline]
__se_sys_connect net/socket.c:2034 [inline]
__x64_sys_connect+0x76/0x80 net/socket.c:2034
do_syscall_x64 arch/x86/entry/common.c:46 [inline]
do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:76
entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7fc76319cdd9
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 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 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fc763fb7028 EFLAGS: 00000246 ORIG_RAX: 000000000000002a
RAX: ffffffffffffffda RBX: 00007fc763415fa0 RCX: 00007fc76319cdd9
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000006
RBP: 00007fc763232d69 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fc763416038 R14: 00007fc763415fa0 R15: 00007ffed1bf71f8
</TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:pn_socket_autobind net/phonet/socket.c:213 [inline]
RIP: 0010:pn_socket_connect+0xb87/0xb90 net/phonet/socket.c:227
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:pn_socket_autobind net/phonet/socket.c:213 [inline]
Code: 48 8b 7c 24 10 e9 68 fd ff ff 44 89 e1 80 e1 07 38 c1 0f 8c 17 fd ff ff 4c 89 e7 e8 73 05 6a f8 e9 0a fd ff ff e8 59 f9 18 f8 <0f> 0b 0f 1f 80 00 00 00 00 55 48 89 e5 41 57 41 56 41 55 41 54 53
RSP: 0018:ffffc90004387c40 EFLAGS: 00010283
RAX: ffffffff89697bf7 RBX: 0000000000000000 RCX: 0000000000080000
RDX: ffffc9000f412000 RSI: 0000000000000031 RDI: 0000000000000032
RBP: ffffc90004387db0 R08: ffff888072840d1b R09: 1ffff1100e5081a3
R10: dffffc0000000000 R11: ffffed100e5081a4 R12: ffff888073f3bc18
R13: 1ffff92000870f98 R14: dffffc0000000000 R15: 1ffff1100e7e7783
FS: 00007fc763fb76c0(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055557da9aa38 CR3: 00000000269c4000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
syzbot
May 3, 2026, 11:31:26 AM (5 days ago) May 3
to syzkaller...@googlegroups.com
syzbot has found a reproducer for the following issue on:
HEAD commit: 4931e0e1673d Linux 6.1.170
git tree: linux-6.1.y
console output: https://syzkaller.appspot.com/x/log.txt?x=13108ad2580000
C reproducer: https://syzkaller.appspot.com/x/repro.c?x=102eda36580000
Downloadable assets:
disk image: https://storage.googleapis.com/syzbot-assets/4c1b2399e351/disk-4931e0e1.raw.xz
vmlinux: https://storage.googleapis.com/syzbot-assets/feb034d7563a/vmlinux-4931e0e1.xz
kernel image: https://storage.googleapis.com/syzbot-assets/424a14bbc862/bzImage-4931e0e1.xz
IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+89b64c...@syzkaller.appspotmail.com
netlink: 'syz.0.17': attribute type 2 has an invalid length.
RAX: ffffffff89697bf7 RBX: 0000000000000000 RCX: ffff88802ffc0000
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc900034c7db0 R08: ffff88805c0b009b R09: 1ffff1100b816013
R10: dffffc0000000000 R11: ffffed100b816014 R12: ffff88805905da18
R13: 1ffff92000698f98 R14: dffffc0000000000 R15: 1ffff1100b20bb43
FS: 00007feb3fad66c0(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000
RAX: ffffffffffffffda RBX: 00007feb3ee15fa0 RCX: 00007feb3eb9cdd9
RAX: ffffffff89697bf7 RBX: 0000000000000000 RCX: ffff88802ffc0000
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc900034c7db0 R08: ffff88805c0b009b R09: 1ffff1100b816013
R10: dffffc0000000000 R11: ffffed100b816014 R12: ffff88805905da18
R13: 1ffff92000698f98 R14: dffffc0000000000 R15: 1ffff1100b20bb43
FS: 00007feb3fad66c0(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000
#syz test: git://repo/address.git branch-or-commit-hash
If you attach or paste a git patch, syzbot will apply it before testing.
HEAD commit: 4931e0e1673d Linux 6.1.170
git tree: linux-6.1.y
kernel config: https://syzkaller.appspot.com/x/.config?x=f0605c5af04d7603
dashboard link: https://syzkaller.appspot.com/bug?extid=89b64c7e9fa924bcc92f
compiler: Debian clang version 21.1.8 (++20251221033036+2078da43e25a-1~exp1~20251221153213.50), Debian LLD 21.1.8
syz repro: https://syzkaller.appspot.com/x/repro.syz?x=1638fece580000
dashboard link: https://syzkaller.appspot.com/bug?extid=89b64c7e9fa924bcc92f
compiler: Debian clang version 21.1.8 (++20251221033036+2078da43e25a-1~exp1~20251221153213.50), Debian LLD 21.1.8
C reproducer: https://syzkaller.appspot.com/x/repro.c?x=102eda36580000
Downloadable assets:
disk image: https://storage.googleapis.com/syzbot-assets/4c1b2399e351/disk-4931e0e1.raw.xz
vmlinux: https://storage.googleapis.com/syzbot-assets/feb034d7563a/vmlinux-4931e0e1.xz
kernel image: https://storage.googleapis.com/syzbot-assets/424a14bbc862/bzImage-4931e0e1.xz
IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+89b64c...@syzkaller.appspotmail.com
------------[ cut here ]------------
kernel BUG at net/phonet/socket.c:213!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
CPU: 1 PID: 4442 Comm: syz.0.17 Not tainted syzkaller #0
kernel BUG at net/phonet/socket.c:213!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026
RIP: 0010:pn_socket_autobind net/phonet/socket.c:213 [inline]
RIP: 0010:pn_socket_connect+0xb87/0xb90 net/phonet/socket.c:227
Code: 48 8b 7c 24 10 e9 68 fd ff ff 44 89 e1 80 e1 07 38 c1 0f 8c 17 fd ff ff 4c 89 e7 e8 73 05 6a f8 e9 0a fd ff ff e8 59 f9 18 f8 <0f> 0b 0f 1f 80 00 00 00 00 55 48 89 e5 41 57 41 56 41 55 41 54 53
RSP: 0018:ffffc900034c7c40 EFLAGS: 00010293
RIP: 0010:pn_socket_autobind net/phonet/socket.c:213 [inline]
RIP: 0010:pn_socket_connect+0xb87/0xb90 net/phonet/socket.c:227
Code: 48 8b 7c 24 10 e9 68 fd ff ff 44 89 e1 80 e1 07 38 c1 0f 8c 17 fd ff ff 4c 89 e7 e8 73 05 6a f8 e9 0a fd ff ff e8 59 f9 18 f8 <0f> 0b 0f 1f 80 00 00 00 00 55 48 89 e5 41 57 41 56 41 55 41 54 53
RAX: ffffffff89697bf7 RBX: 0000000000000000 RCX: ffff88802ffc0000
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc900034c7db0 R08: ffff88805c0b009b R09: 1ffff1100b816013
R10: dffffc0000000000 R11: ffffed100b816014 R12: ffff88805905da18
R13: 1ffff92000698f98 R14: dffffc0000000000 R15: 1ffff1100b20bb43
FS: 00007feb3fad66c0(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007feb3fab4ff8 CR3: 000000003066e000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
<TASK>
__sys_connect_file net/socket.c:2010 [inline]
__sys_connect+0x3cb/0x450 net/socket.c:2027
__do_sys_connect net/socket.c:2037 [inline]
__se_sys_connect net/socket.c:2034 [inline]
__x64_sys_connect+0x76/0x80 net/socket.c:2034
do_syscall_x64 arch/x86/entry/common.c:46 [inline]
do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:76
entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7feb3eb9cdd9
<TASK>
__sys_connect_file net/socket.c:2010 [inline]
__sys_connect+0x3cb/0x450 net/socket.c:2027
__do_sys_connect net/socket.c:2037 [inline]
__se_sys_connect net/socket.c:2034 [inline]
__x64_sys_connect+0x76/0x80 net/socket.c:2034
do_syscall_x64 arch/x86/entry/common.c:46 [inline]
do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:76
entry_SYSCALL_64_after_hwframe+0x68/0xd2
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 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 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007feb3fad6028 EFLAGS: 00000246 ORIG_RAX: 000000000000002a
RAX: ffffffffffffffda RBX: 00007feb3ee15fa0 RCX: 00007feb3eb9cdd9
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000006
RBP: 00007feb3ec32d69 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007feb3ee16038 R14: 00007feb3ee15fa0 R15: 00007ffff8032348
</TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:pn_socket_autobind net/phonet/socket.c:213 [inline]
RIP: 0010:pn_socket_connect+0xb87/0xb90 net/phonet/socket.c:227
Code: 48 8b 7c 24 10 e9 68 fd ff ff 44 89 e1 80 e1 07 38 c1 0f 8c 17 fd ff ff 4c 89 e7 e8 73 05 6a f8 e9 0a fd ff ff e8 59 f9 18 f8 <0f> 0b 0f 1f 80 00 00 00 00 55 48 89 e5 41 57 41 56 41 55 41 54 53
RSP: 0018:ffffc900034c7c40 EFLAGS: 00010293
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:pn_socket_autobind net/phonet/socket.c:213 [inline]
RIP: 0010:pn_socket_connect+0xb87/0xb90 net/phonet/socket.c:227
Code: 48 8b 7c 24 10 e9 68 fd ff ff 44 89 e1 80 e1 07 38 c1 0f 8c 17 fd ff ff 4c 89 e7 e8 73 05 6a f8 e9 0a fd ff ff e8 59 f9 18 f8 <0f> 0b 0f 1f 80 00 00 00 00 55 48 89 e5 41 57 41 56 41 55 41 54 53
RAX: ffffffff89697bf7 RBX: 0000000000000000 RCX: ffff88802ffc0000
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc900034c7db0 R08: ffff88805c0b009b R09: 1ffff1100b816013
R10: dffffc0000000000 R11: ffffed100b816014 R12: ffff88805905da18
R13: 1ffff92000698f98 R14: dffffc0000000000 R15: 1ffff1100b20bb43
FS: 00007feb3fad66c0(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007feb3fab5d58 CR3: 000000003066e000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
---
If you want syzbot to run the reproducer, reply with:
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
---
#syz test: git://repo/address.git branch-or-commit-hash
If you attach or paste a git patch, syzbot will apply it before testing.
syzbot
May 3, 2026, 11:53:25 AM (5 days ago) May 3
to syzkaller...@googlegroups.com
syzbot has found a reproducer for the following issue on:
HEAD commit: 258cf62a6dfd Linux 6.6.137
git tree: linux-6.6.y
console output: https://syzkaller.appspot.com/x/log.txt?x=152ef326580000
C reproducer: https://syzkaller.appspot.com/x/repro.c?x=1133bb48580000
Downloadable assets:
disk image: https://storage.googleapis.com/syzbot-assets/8abd93876bdd/disk-258cf62a.raw.xz
vmlinux: https://storage.googleapis.com/syzbot-assets/721d0cc7467a/vmlinux-258cf62a.xz
kernel image: https://storage.googleapis.com/syzbot-assets/7f2dfd911e3d/bzImage-258cf62a.xz
IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+bf90b0...@syzkaller.appspotmail.com
netlink: 'syz.0.17': attribute type 2 has an invalid length.
RAX: ffffffff89bb2429 RBX: 0000000000000000 RCX: ffff88802dca8000
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc90003357db0 R08: ffffffff8e8b19af R09: 1ffffffff1d16335
R10: dffffc0000000000 R11: fffffbfff1d16336 R12: ffff88806d520618
R13: 1ffff9200066af98 R14: dffffc0000000000 R15: 1ffff1100daa40c3
FS: 00007ff8d40b36c0(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000
RAX: ffffffffffffffda RBX: 00007ff8d3415fa0 RCX: 00007ff8d319cdd9
RAX: ffffffff89bb2429 RBX: 0000000000000000 RCX: ffff88802dca8000
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc90003357db0 R08: ffffffff8e8b19af R09: 1ffffffff1d16335
R10: dffffc0000000000 R11: fffffbfff1d16336 R12: ffff88806d520618
R13: 1ffff9200066af98 R14: dffffc0000000000 R15: 1ffff1100daa40c3
FS: 00007ff8d40b36c0(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000
HEAD commit: 258cf62a6dfd Linux 6.6.137
git tree: linux-6.6.y
kernel config: https://syzkaller.appspot.com/x/.config?x=c5b35c4db8465904
dashboard link: https://syzkaller.appspot.com/bug?extid=bf90b0f2f5f630e0e396
compiler: Debian clang version 21.1.8 (++20251221033036+2078da43e25a-1~exp1~20251221153213.50), Debian LLD 21.1.8
syz repro: https://syzkaller.appspot.com/x/repro.syz?x=151f99ba580000
dashboard link: https://syzkaller.appspot.com/bug?extid=bf90b0f2f5f630e0e396
compiler: Debian clang version 21.1.8 (++20251221033036+2078da43e25a-1~exp1~20251221153213.50), Debian LLD 21.1.8
C reproducer: https://syzkaller.appspot.com/x/repro.c?x=1133bb48580000
Downloadable assets:
disk image: https://storage.googleapis.com/syzbot-assets/8abd93876bdd/disk-258cf62a.raw.xz
vmlinux: https://storage.googleapis.com/syzbot-assets/721d0cc7467a/vmlinux-258cf62a.xz
kernel image: https://storage.googleapis.com/syzbot-assets/7f2dfd911e3d/bzImage-258cf62a.xz
IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+bf90b0...@syzkaller.appspotmail.com
------------[ cut here ]------------
kernel BUG at net/phonet/socket.c:213!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
CPU: 0 PID: 5930 Comm: syz.0.17 Not tainted syzkaller #0
kernel BUG at net/phonet/socket.c:213!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026
RIP: 0010:pn_socket_autobind net/phonet/socket.c:213 [inline]
RIP: 0010:pn_socket_connect+0xb99/0xba0 net/phonet/socket.c:227
Code: 48 8b 7c 24 10 e9 68 fd ff ff 44 89 e1 80 e1 07 38 c1 0f 8c 17 fd ff ff 4c 89 e7 e8 b1 34 24 f8 e9 0a fd ff ff e8 d7 fd cb f7 <0f> 0b 0f 1f 44 00 00 f3 0f 1e fa 55 48 89 e5 41 57 41 56 41 55 41
RSP: 0018:ffffc90003357c40 EFLAGS: 00010293
RIP: 0010:pn_socket_autobind net/phonet/socket.c:213 [inline]
RIP: 0010:pn_socket_connect+0xb99/0xba0 net/phonet/socket.c:227
Code: 48 8b 7c 24 10 e9 68 fd ff ff 44 89 e1 80 e1 07 38 c1 0f 8c 17 fd ff ff 4c 89 e7 e8 b1 34 24 f8 e9 0a fd ff ff e8 d7 fd cb f7 <0f> 0b 0f 1f 44 00 00 f3 0f 1e fa 55 48 89 e5 41 57 41 56 41 55 41
RAX: ffffffff89bb2429 RBX: 0000000000000000 RCX: ffff88802dca8000
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc90003357db0 R08: ffffffff8e8b19af R09: 1ffffffff1d16335
R10: dffffc0000000000 R11: fffffbfff1d16336 R12: ffff88806d520618
R13: 1ffff9200066af98 R14: dffffc0000000000 R15: 1ffff1100daa40c3
FS: 00007ff8d40b36c0(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ff8d4092d58 CR3: 0000000076d6f000 CR4: 00000000003506f0
Call Trace:
<TASK>
__sys_connect_file net/socket.c:2056 [inline]
__sys_connect+0x3da/0x470 net/socket.c:2073
__do_sys_connect net/socket.c:2083 [inline]
__se_sys_connect net/socket.c:2080 [inline]
__x64_sys_connect+0x7a/0x90 net/socket.c:2080
do_syscall_x64 arch/x86/entry/common.c:46 [inline]
do_syscall_64+0x55/0xa0 arch/x86/entry/common.c:76
entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7ff8d319cdd9
<TASK>
__sys_connect_file net/socket.c:2056 [inline]
__sys_connect+0x3da/0x470 net/socket.c:2073
__do_sys_connect net/socket.c:2083 [inline]
__se_sys_connect net/socket.c:2080 [inline]
__x64_sys_connect+0x7a/0x90 net/socket.c:2080
do_syscall_x64 arch/x86/entry/common.c:46 [inline]
do_syscall_64+0x55/0xa0 arch/x86/entry/common.c:76
entry_SYSCALL_64_after_hwframe+0x68/0xd2
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 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 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ff8d40b3028 EFLAGS: 00000246 ORIG_RAX: 000000000000002a
RAX: ffffffffffffffda RBX: 00007ff8d3415fa0 RCX: 00007ff8d319cdd9
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000006
RBP: 00007ff8d3232d69 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ff8d3416038 R14: 00007ff8d3415fa0 R15: 00007ffcb0570138
</TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:pn_socket_autobind net/phonet/socket.c:213 [inline]
RIP: 0010:pn_socket_connect+0xb99/0xba0 net/phonet/socket.c:227
Code: 48 8b 7c 24 10 e9 68 fd ff ff 44 89 e1 80 e1 07 38 c1 0f 8c 17 fd ff ff 4c 89 e7 e8 b1 34 24 f8 e9 0a fd ff ff e8 d7 fd cb f7 <0f> 0b 0f 1f 44 00 00 f3 0f 1e fa 55 48 89 e5 41 57 41 56 41 55 41
RSP: 0018:ffffc90003357c40 EFLAGS: 00010293
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:pn_socket_autobind net/phonet/socket.c:213 [inline]
RIP: 0010:pn_socket_connect+0xb99/0xba0 net/phonet/socket.c:227
Code: 48 8b 7c 24 10 e9 68 fd ff ff 44 89 e1 80 e1 07 38 c1 0f 8c 17 fd ff ff 4c 89 e7 e8 b1 34 24 f8 e9 0a fd ff ff e8 d7 fd cb f7 <0f> 0b 0f 1f 44 00 00 f3 0f 1e fa 55 48 89 e5 41 57 41 56 41 55 41
RAX: ffffffff89bb2429 RBX: 0000000000000000 RCX: ffff88802dca8000
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc90003357db0 R08: ffffffff8e8b19af R09: 1ffffffff1d16335
R10: dffffc0000000000 R11: fffffbfff1d16336 R12: ffff88806d520618
R13: 1ffff9200066af98 R14: dffffc0000000000 R15: 1ffff1100daa40c3
FS: 00007ff8d40b36c0(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ff8d31ea4c0 CR3: 0000000076d6f000 CR4: 00000000003506f0
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