Hello, syzbot found the following issue on: HEAD commit: 7eb172143d55 Linux 6.14-rc5 git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=16e067a0580000 kernel config: https://syzkaller.appspot.com/x/.config?x=523d3ff8e053340a dashboard link: https://syzkaller.appspot.com/bug?extid=2f2bc79f24dae1dc62b6 compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=126fd5a8580000 Downloadable assets: disk image: https://storage.googleapis.com/syzbot-assets/0e7164e018a2/disk-7eb17214.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/30ec438ad743/vmlinux-7eb17214.xz kernel image: https://storage.googleapis.com/syzbot-assets/9b0e3bf8e8fd/bzImage-7eb17214.xz mounted in repro: https://storage.googleapis.com/syzbot-assets/cbb4ed5bd074/mount_0.gz fsck result: failed (log: https://syzkaller.appspot.com/x/fsck.log?x=14e498b7980000) IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+2f2bc79f24dae1dc62b6@xxxxxxxxxxxxxxxxxxxxxxxxx slab kmalloc-32 start ffff88805f791000 pointer offset 0 size 32 list_del corruption. next->prev should be ffff88802029a200, but was ff61616161616161. (next=ffff88805f791000) ------------[ cut here ]------------ kernel BUG at lib/list_debug.c:67! Oops: invalid opcode: 0000 [#1] PREEMPT SMP KASAN PTI CPU: 1 UID: 0 PID: 5948 Comm: syz-executor Not tainted 6.14.0-rc5-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025 RIP: 0010:__list_del_entry_valid_or_report+0x18c/0x190 lib/list_debug.c:65 Code: fa 89 10 fd 42 80 3c 2b 00 74 08 4c 89 e7 e8 bb 0e 32 fd 49 8b 56 08 48 c7 c7 00 21 80 8c 4c 89 fe 4c 89 f1 e8 a5 9d 32 fc 90 <0f> 0b 66 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f RSP: 0018:ffffc90003c8fb50 EFLAGS: 00010046 RAX: 000000000000006d RBX: 1ffff1100bef2201 RCX: bc1d858b0da16200 RDX: 0000000000000000 RSI: 0000000080000001 RDI: 0000000000000000 RBP: ffffc90003c8fcb0 R08: ffffffff81a114cc R09: 1ffff110170e519a R10: dffffc0000000000 R11: ffffed10170e519b R12: ffff88805f791008 R13: dffffc0000000000 R14: ffff88805f791000 R15: ffff88802029a200 FS: 000055556c140500(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000c009736000 CR3: 000000005e410000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: <TASK> __list_del_entry_valid include/linux/list.h:124 [inline] __list_del_entry include/linux/list.h:215 [inline] list_del include/linux/list.h:229 [inline] ref_tracker_free+0x3e6/0x7e0 lib/ref_tracker.c:265 __netns_tracker_free include/net/net_namespace.h:371 [inline] put_net_track include/net/net_namespace.h:386 [inline] __sk_destruct+0x3f5/0x690 net/core/sock.c:2307 sock_put include/net/sock.h:1914 [inline] unix_release_sock+0xa70/0xd00 net/unix/af_unix.c:727 unix_release+0x91/0xc0 net/unix/af_unix.c:1106 __sock_release net/socket.c:647 [inline] sock_close+0xbc/0x240 net/socket.c:1398 __fput+0x3e9/0x9f0 fs/file_table.c:464 __do_sys_close fs/open.c:1580 [inline] __se_sys_close fs/open.c:1565 [inline] __x64_sys_close+0x7f/0x110 fs/open.c:1565 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f9cd538c8c7 Code: 44 00 00 48 c7 c2 a8 ff ff ff f7 d8 64 89 02 b8 ff ff ff ff eb bc 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 00 b8 03 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 01 c3 48 c7 c2 a8 ff ff ff f7 d8 64 89 02 b8 RSP: 002b:00007fff090c5388 EFLAGS: 00000246 ORIG_RAX: 0000000000000003 RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f9cd538c8c7 RDX: 0000000000000000 RSI: 0000000000008933 RDI: 0000000000000005 RBP: 00007fff090c5390 R08: 000000000000000a R09: 00007fff090c53c2 R10: 00007fff090c57c6 R11: 0000000000000246 R12: 00007fff090c5410 R13: 00007f9cd540f3b5 R14: 00007f9cd60d4620 R15: 00007f9cd540f3b5 </TASK> Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:__list_del_entry_valid_or_report+0x18c/0x190 lib/list_debug.c:65 Code: fa 89 10 fd 42 80 3c 2b 00 74 08 4c 89 e7 e8 bb 0e 32 fd 49 8b 56 08 48 c7 c7 00 21 80 8c 4c 89 fe 4c 89 f1 e8 a5 9d 32 fc 90 <0f> 0b 66 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f RSP: 0018:ffffc90003c8fb50 EFLAGS: 00010046 RAX: 000000000000006d RBX: 1ffff1100bef2201 RCX: bc1d858b0da16200 RDX: 0000000000000000 RSI: 0000000080000001 RDI: 0000000000000000 RBP: ffffc90003c8fcb0 R08: ffffffff81a114cc R09: 1ffff110170e519a R10: dffffc0000000000 R11: ffffed10170e519b R12: ffff88805f791008 R13: dffffc0000000000 R14: ffff88805f791000 R15: ffff88802029a200 FS: 000055556c140500(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000c009736000 CR3: 000000005e410000 CR4: 00000000003526f0 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 syzkaller@xxxxxxxxxxxxxxxx. 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 syzbot to run the reproducer, reply with: #syz test: git://repo/address.git branch-or-commit-hash If you attach or paste a git patch, syzbot will apply it before testing. 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
