list_add corruption. prev->next should be next (ffffe8ffad26db28), but was ffffe8ffad26db29. (prev=ffffe8ffad26db28). ------------[ cut here ]------------ kernel BUG at lib/list_debug.c:32! Oops: invalid opcode: 0000 [#1] PREEMPT SMP KASAN NOPTI CPU: 2 PID: 5399 Comm: syz-executor.1 Not tainted 6.10.0-rc1-syzkaller #0 Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014 RIP: 0010:__list_add_valid_or_report+0xbe/0x100 lib/list_debug.c:32 Code: e9 fc 90 0f 0b 48 89 d9 48 c7 c7 60 c0 8f 8b e8 88 5a e9 fc 90 0f 0b 48 89 f1 48 c7 c7 e0 c0 8f 8b 48 89 de e8 73 5a e9 fc 90 <0f> 0b 48 89 f2 48 89 d9 48 89 ee 48 c7 c7 60 c1 8f 8b e8 5b 5a e9 RSP: 0018:ffffc90006cc7648 EFLAGS: 00010286 RAX: 0000000000000075 RBX: ffffe8ffad26db28 RCX: ffffc90002dc9000 RDX: 0000000000000000 RSI: ffffffff816fbd56 RDI: 0000000000000005 RBP: ffff88804c004068 R08: 0000000000000005 R09: 0000000000000000 R10: 0000000000000001 R11: 00000000000000ae R12: ffffe8ffad26db28 R13: ffff88804c004000 R14: ffff88804c004068 R15: ffffe8ffad26db10 FS: 0000000000000000(0000) GS:ffff88802c200000(0063) knlGS:00000000f5eb6b40 CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 CR2: 0000000020c0a000 CR3: 000000005d390000 CR4: 0000000000350ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: __list_add_valid include/linux/list.h:88 [inline] __list_add include/linux/list.h:150 [inline] list_add_tail include/linux/list.h:183 [inline] xlog_cil_insert_items fs/xfs/xfs_log_cil.c:675 [inline] xlog_cil_commit+0x125b/0x32d0 fs/xfs/xfs_log_cil.c:1593 __xfs_trans_commit+0x346/0xe90 fs/xfs/xfs_trans.c:1020 xfs_qm_qino_alloc+0x498/0x6b0 fs/xfs/xfs_qm.c:834 xfs_qm_init_quotainos+0x51c/0x6d0 fs/xfs/xfs_qm.c:1593 xfs_qm_init_quotainfo+0xf8/0xac0 fs/xfs/xfs_qm.c:643 xfs_qm_mount_quotas+0x59/0x650 fs/xfs/xfs_qm.c:1477 xfs_mountfs+0x1b72/0x1e80 fs/xfs/xfs_mount.c:980 xfs_fs_fill_super+0x1434/0x1df0 fs/xfs/xfs_super.c:1753 get_tree_bdev+0x36f/0x610 fs/super.c:1615 vfs_get_tree+0x8f/0x380 fs/super.c:1780 do_new_mount fs/namespace.c:3352 [inline] path_mount+0x6e1/0x1f10 fs/namespace.c:3679 do_mount fs/namespace.c:3692 [inline] __do_sys_mount fs/namespace.c:3898 [inline] __se_sys_mount fs/namespace.c:3875 [inline] __ia32_sys_mount+0x295/0x320 fs/namespace.c:3875 do_syscall_32_irqs_on arch/x86/entry/common.c:165 [inline] __do_fast_syscall_32+0x73/0x120 arch/x86/entry/common.c:386 do_fast_syscall_32+0x32/0x80 arch/x86/entry/common.c:411 entry_SYSENTER_compat_after_hwframe+0x84/0x8e RIP: 0023:0xf72c4579 Code: b8 01 10 06 03 74 b4 01 10 07 03 74 b0 01 10 08 03 74 d8 01 00 00 00 00 00 00 00 00 00 00 00 00 00 51 52 55 89 e5 0f 34 cd 80 <5d> 5a 59 c3 90 90 90 90 8d b4 26 00 00 00 00 8d b4 26 00 00 00 00 RSP: 002b:00000000f5eb6400 EFLAGS: 00000292 ORIG_RAX: 0000000000000015 RAX: ffffffffffffffda RBX: 00000000f5eb6460 RCX: 0000000020009840 RDX: 0000000020009800 RSI: 0000000000000000 RDI: 00000000f5eb64a0 RBP: 00000000f5eb6460 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000296 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:__list_add_valid_or_report+0xbe/0x100 lib/list_debug.c:32 Code: e9 fc 90 0f 0b 48 89 d9 48 c7 c7 60 c0 8f 8b e8 88 5a e9 fc 90 0f 0b 48 89 f1 48 c7 c7 e0 c0 8f 8b 48 89 de e8 73 5a e9 fc 90 <0f> 0b 48 89 f2 48 89 d9 48 89 ee 48 c7 c7 60 c1 8f 8b e8 5b 5a e9 RSP: 0018:ffffc90006cc7648 EFLAGS: 00010286 RAX: 0000000000000075 RBX: ffffe8ffad26db28 RCX: ffffc90002dc9000 RDX: 0000000000000000 RSI: ffffffff816fbd56 RDI: 0000000000000005 RBP: ffff88804c004068 R08: 0000000000000005 R09: 0000000000000000 R10: 0000000000000001 R11: 00000000000000ae R12: ffffe8ffad26db28 R13: ffff88804c004000 R14: ffff88804c004068 R15: ffffe8ffad26db10 FS: 0000000000000000(0000) GS:ffff88802c200000(0063) knlGS:00000000f5eb6b40 CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 CR2: 0000000020c0a000 CR3: 000000005d390000 CR4: 0000000000350ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess), 2 bytes skipped: 0: 10 06 adc %al,(%rsi) 2: 03 74 b4 01 add 0x1(%rsp,%rsi,4),%esi 6: 10 07 adc %al,(%rdi) 8: 03 74 b0 01 add 0x1(%rax,%rsi,4),%esi c: 10 08 adc %cl,(%rax) e: 03 74 d8 01 add 0x1(%rax,%rbx,8),%esi 1e: 00 51 52 add %dl,0x52(%rcx) 21: 55 push %rbp 22: 89 e5 mov %esp,%ebp 24: 0f 34 sysenter 26: cd 80 int $0x80 * 28: 5d pop %rbp <-- trapping instruction 29: 5a pop %rdx 2a: 59 pop %rcx 2b: c3 ret 2c: 90 nop 2d: 90 nop 2e: 90 nop 2f: 90 nop 30: 8d b4 26 00 00 00 00 lea 0x0(%rsi,%riz,1),%esi 37: 8d b4 26 00 00 00 00 lea 0x0(%rsi,%riz,1),%esi