list_del corruption. prev->next should be ffff888030731d80, but was ffffc90003897b78. (prev=ffffc90003897b78) ------------[ cut here ]------------ kernel BUG at lib/list_debug.c:62! Oops: invalid opcode: 0000 [#1] PREEMPT SMP KASAN NOPTI CPU: 1 UID: 0 PID: 7574 Comm: syz.3.276 Not tainted 6.13.0-rc4-syzkaller-00069-g8379578b11d5 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 RIP: 0010:__list_del_entry_valid_or_report+0x12c/0x1c0 lib/list_debug.c:62 Code: e8 09 1a d6 fc 90 0f 0b 48 89 ca 48 c7 c7 20 e2 d1 8b e8 f7 19 d6 fc 90 0f 0b 48 89 c2 48 c7 c7 80 e2 d1 8b e8 e5 19 d6 fc 90 <0f> 0b 48 89 d1 48 c7 c7 00 e3 d1 8b 48 89 c2 e8 d0 19 d6 fc 90 0f RSP: 0018:ffffc900030576a0 EFLAGS: 00010282 RAX: 000000000000006d RBX: ffff888030731cc0 RCX: ffffc90012c6d000 RDX: 0000000000000000 RSI: ffffffff817a0736 RDI: 0000000000000005 RBP: ffff88802a294000 R08: 0000000000000005 R09: 0000000000000000 R10: 0000000080000001 R11: 0000000000000001 R12: ffff88807ec8f030 R13: 0000000000000005 R14: ffff888030731d80 R15: ffff888030731d88 FS: 00007f3cd33816c0(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007ffe5eceeff8 CR3: 0000000073f46000 CR4: 0000000000350ef0 Call Trace: __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] p9_fd_cancelled+0xa2/0x2a0 net/9p/trans_fd.c:736 p9_client_flush.isra.0+0x34e/0x420 net/9p/client.c:618 p9_client_rpc+0xaef/0xc10 net/9p/client.c:741 p9_client_version net/9p/client.c:930 [inline] p9_client_create+0xc65/0x1200 net/9p/client.c:1036 v9fs_session_init+0x1f8/0x1a80 fs/9p/v9fs.c:410 v9fs_mount+0xc6/0xa30 fs/9p/vfs_super.c:122 legacy_get_tree+0x10c/0x220 fs/fs_context.c:662 vfs_get_tree+0x92/0x380 fs/super.c:1814 do_new_mount fs/namespace.c:3507 [inline] path_mount+0x14e6/0x1f20 fs/namespace.c:3834 do_mount fs/namespace.c:3847 [inline] __do_sys_mount fs/namespace.c:4057 [inline] __se_sys_mount fs/namespace.c:4034 [inline] __x64_sys_mount+0x294/0x320 fs/namespace.c:4034 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: 0033:0x7f3cd2585d29 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 a8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f3cd3381038 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 00007f3cd2776240 RCX: 00007f3cd2585d29 RDX: 0000000020004500 RSI: 00000000200000c0 RDI: 0000000000000000 RBP: 00007f3cd2601b08 R08: 00000000200005c0 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007f3cd2776240 R15: 00007ffee703c6a8 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:__list_del_entry_valid_or_report+0x12c/0x1c0 lib/list_debug.c:62 Code: e8 09 1a d6 fc 90 0f 0b 48 89 ca 48 c7 c7 20 e2 d1 8b e8 f7 19 d6 fc 90 0f 0b 48 89 c2 48 c7 c7 80 e2 d1 8b e8 e5 19 d6 fc 90 <0f> 0b 48 89 d1 48 c7 c7 00 e3 d1 8b 48 89 c2 e8 d0 19 d6 fc 90 0f RSP: 0018:ffffc900030576a0 EFLAGS: 00010282 RAX: 000000000000006d RBX: ffff888030731cc0 RCX: ffffc90012c6d000 RDX: 0000000000000000 RSI: ffffffff817a0736 RDI: 0000000000000005 RBP: ffff88802a294000 R08: 0000000000000005 R09: 0000000000000000 R10: 0000000080000001 R11: 0000000000000001 R12: ffff88807ec8f030 R13: 0000000000000005 R14: ffff888030731d80 R15: ffff888030731d88 FS: 00007f3cd33816c0(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007ffe5eceeff8 CR3: 0000000073f46000 CR4: 0000000000350ef0