attempt to access beyond end of device loop0: rw=0, want=6491538, limit=128 Buffer I/O error on dev loop0, logical block 3245768, async page read ------------[ cut here ]------------ WARNING: CPU: 0 PID: 4756 at fs/inode.c:389 inc_nlink+0x11d/0x130 fs/inode.c:389 Modules linked in: CPU: 0 PID: 4756 Comm: syz.0.89 Not tainted syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025 RIP: 0010:inc_nlink+0x11d/0x130 fs/inode.c:389 Code: 0a ef ff e9 3a ff ff ff 89 d9 80 e1 07 80 c1 03 38 c1 0f 8c 4c ff ff ff 48 89 df e8 ad 0a ef ff e9 3f ff ff ff e8 13 a2 aa ff <0f> 0b eb 82 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 41 57 41 RSP: 0018:ffffc9000416fd60 EFLAGS: 00010293 RAX: ffffffff81cd29fd RBX: ffff88805d8545c8 RCX: ffff88807ebe1dc0 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: 0000000000000000 R08: dffffc0000000000 R09: ffffed1002d39a57 R10: ffffed1002d39a57 R11: 1ffff11002d39a56 R12: dffffc0000000000 R13: 1ffff1100bb0a8b9 R14: ffff88805d854580 R15: 0000000000000000 FS: 00007f62c89a96c0(0000) GS:ffff8880b9000000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f4b1aa95f98 CR3: 00000000755f8000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: inode_inc_link_count include/linux/fs.h:2498 [inline] sysv_mkdir+0x1d/0x120 fs/sysv/namei.c:119 vfs_mkdir+0x387/0x570 fs/namei.c:4073 do_mkdirat+0x1d7/0x5a0 fs/namei.c:4098 __do_sys_mkdir fs/namei.c:4118 [inline] __se_sys_mkdir fs/namei.c:4116 [inline] __x64_sys_mkdir+0x6a/0x80 fs/namei.c:4116 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x66/0xd0 RIP: 0033:0x7f62ca742749 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:00007f62c89a9038 EFLAGS: 00000246 ORIG_RAX: 0000000000000053 RAX: ffffffffffffffda RBX: 00007f62ca998fa0 RCX: 00007f62ca742749 RDX: 0000000000000000 RSI: 0000000000000021 RDI: 00002000000003c0 RBP: 00007f62ca7c6f91 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f62ca999038 R14: 00007f62ca998fa0 R15: 00007fff801d2df8