syz-executor396: attempt to access beyond end of device loop0: rw=0, sector=6491536, nr_sectors = 2 limit=128 Buffer I/O error on dev loop0, logical block 3245768, async page read ------------[ cut here ]------------ WARNING: CPU: 0 PID: 5311 at fs/inode.c:464 inc_nlink+0x127/0x150 fs/inode.c:464 Modules linked in: CPU: 0 UID: 0 PID: 5311 Comm: syz-executor396 Not tainted 6.14.0-rc2-syzkaller-00056-gab68d7eb7b1a #0 Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014 RIP: 0010:inc_nlink+0x127/0x150 fs/inode.c:464 Code: ff e9 35 ff ff ff 44 89 e9 80 e1 07 80 c1 03 38 c1 0f 8c 47 ff ff ff 4c 89 ef e8 d4 07 e7 ff e9 3a ff ff ff e8 da 6e 80 ff 90 <0f> 0b 90 e9 7b ff ff ff 44 89 f9 80 e1 07 80 c1 03 38 c1 0f 8c 49 RSP: 0018:ffffc9000d0dfd30 EFLAGS: 00010293 RAX: ffffffff823ee0c6 RBX: 1ffff11008ac0010 RCX: ffff88801ec14880 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: 0000000000000000 R08: ffffffff823ee040 R09: 1ffff11006088020 R10: dffffc0000000000 R11: ffffffff82e161f0 R12: dffffc0000000000 R13: ffff888045600080 R14: ffff888045600038 R15: 0000000000000000 FS: 000055559262e380(0000) GS:ffff88801fc00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000559ca0119058 CR3: 000000004129e000 CR4: 0000000000352ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: inode_inc_link_count include/linux/fs.h:2577 [inline] sysv_mkdir+0x21/0x130 fs/sysv/namei.c:119 vfs_mkdir+0x2f9/0x4f0 fs/namei.c:4313 do_mkdirat+0x264/0x3a0 fs/namei.c:4336 __do_sys_mkdir fs/namei.c:4356 [inline] __se_sys_mkdir fs/namei.c:4354 [inline] __x64_sys_mkdir+0x6c/0x80 fs/namei.c:4354 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: 0033:0x7f040f909a99 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 f1 17 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:00007fff69c4d948 EFLAGS: 00000246 ORIG_RAX: 0000000000000053 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f040f909a99 RDX: 00007f040f908a91 RSI: 0000000000000000 RDI: 0000400000000040 RBP: 00007f040f9865f0 R08: 0000000000009e89 R09: 000055559262f4c0 R10: 00007fff69c4d810 R11: 0000000000000246 R12: 00007fff69c4d970 R13: 00007fff69c4db98 R14: 431bde82d7b634db R15: 00007f040f95203b