Hello, syzbot found the following issue on: HEAD commit: fda5e3f28400 Merge tag 'trace-v6.13-rc7-2' of git://git.ke.. git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=1117e024580000 kernel config: https://syzkaller.appspot.com/x/.config?x=f5e182416a4b418f dashboard link: https://syzkaller.appspot.com/bug?extid=4e21d5f67b886a692b55 compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=177959df980000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=1288d1f8580000 Downloadable assets: disk image: https://storage.googleapis.com/syzbot-assets/cd46ddd4b381/disk-fda5e3f2.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/f7cf021f77f5/vmlinux-fda5e3f2.xz kernel image: https://storage.googleapis.com/syzbot-assets/12cb03ba7d7e/bzImage-fda5e3f2.xz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+4e21d5f67b886a692b55@xxxxxxxxxxxxxxxxxxxxxxxxx list_del corruption. prev->next should be ffffc90003377b98, but was ffff88802a2585c8. (prev=ffff88802a2585c8) ------------[ cut here ]------------ kernel BUG at lib/list_debug.c:62! Oops: invalid opcode: 0000 [#1] PREEMPT SMP KASAN PTI CPU: 0 UID: 0 PID: 9290 Comm: syz-executor367 Not tainted 6.13.0-rc7-syzkaller-00191-gfda5e3f28400 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024 RIP: 0010:__list_del_entry_valid_or_report+0x12c/0x1c0 lib/list_debug.c:62 Code: e8 19 db da fc 90 0f 0b 48 89 ca 48 c7 c7 00 a0 b1 8b e8 07 db da fc 90 0f 0b 48 89 c2 48 c7 c7 60 a0 b1 8b e8 f5 da da fc 90 <0f> 0b 48 89 d1 48 c7 c7 e0 a0 b1 8b 48 89 c2 e8 e0 da da fc 90 0f RSP: 0018:ffffc90003377880 EFLAGS: 00010086 RAX: 000000000000006d RBX: ffffc90003377b80 RCX: ffffffff8178e449 RDX: 0000000000000000 RSI: ffffffff81798bd6 RDI: 0000000000000005 RBP: ffff88802a258588 R08: 0000000000000005 R09: 0000000000000000 R10: 0000000080000001 R11: 0000000000000001 R12: 0000000000000286 R13: ffffc90003377b98 R14: ffffc90003377ba0 R15: ffffc90003377b70 FS: 0000555578a00380(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f687b8542b0 CR3: 0000000073a90000 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] __remove_wait_queue include/linux/wait.h:207 [inline] remove_wait_queue+0x30/0x180 kernel/sched/wait.c:55 free_poll_entry fs/select.c:132 [inline] poll_freewait+0xd5/0x250 fs/select.c:141 do_sys_poll+0x6f7/0xde0 fs/select.c:1010 __do_sys_poll fs/select.c:1074 [inline] __se_sys_poll fs/select.c:1062 [inline] __x64_sys_poll+0x1a8/0x450 fs/select.c:1062 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f687b7d8809 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 f1 1c 00 00 90 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:00007ffdb8bb93f8 EFLAGS: 00000246 ORIG_RAX: 0000000000000007 RAX: ffffffffffffffda RBX: 00307276642f3072 RCX: 00007f687b7d8809 RDX: 0000000000000106 RSI: 0000000000000005 RDI: 0000000020000080 RBP: 0000000000000000 R08: 00007ffdb8bb8f60 R09: 00007ffdb8bb8f60 R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffdb8bb941c R13: 00007ffdb8bb9430 R14: 00007ffdb8bb9470 R15: 0000000000000359 </TASK> Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:__list_del_entry_valid_or_report+0x12c/0x1c0 lib/list_debug.c:62 Code: e8 19 db da fc 90 0f 0b 48 89 ca 48 c7 c7 00 a0 b1 8b e8 07 db da fc 90 0f 0b 48 89 c2 48 c7 c7 60 a0 b1 8b e8 f5 da da fc 90 <0f> 0b 48 89 d1 48 c7 c7 e0 a0 b1 8b 48 89 c2 e8 e0 da da fc 90 0f RSP: 0018:ffffc90003377880 EFLAGS: 00010086 RAX: 000000000000006d RBX: ffffc90003377b80 RCX: ffffffff8178e449 RDX: 0000000000000000 RSI: ffffffff81798bd6 RDI: 0000000000000005 RBP: ffff88802a258588 R08: 0000000000000005 R09: 0000000000000000 R10: 0000000080000001 R11: 0000000000000001 R12: 0000000000000286 R13: ffffc90003377b98 R14: ffffc90003377ba0 R15: ffffc90003377b70 FS: 0000555578a00380(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f687b8542b0 CR3: 0000000073a90000 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
