loop0: detected capacity change from 0 to 64 syz.0.0: attempt to access beyond end of device loop0: rw=2049, sector=268435468, nr_sectors = 2 limit=64 minix-fs error (device loop0): minix_unlink:149: inode #9: comm syz.0.0: inode has corrupted nlink ------------[ cut here ]------------ !(inode_state_read_once(inode) & I_LINKABLE) WARNING: fs/inode.c:465 at inc_nlink+0x122/0x150 fs/inode.c:465, CPU#0: syz.0.0/5329 Modules linked in: CPU: 0 UID: 0 PID: 5329 Comm: syz.0.0 Not tainted syzkaller #0 PREEMPT(full) Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 RIP: 0010:inc_nlink+0x122/0x150 fs/inode.c:465 Code: e5 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 69 64 e5 ff e9 3f ff ff ff e8 bf 38 76 ff 90 <0f> 0b 90 eb 80 44 89 f9 80 e1 07 80 c1 03 38 c1 0f 8c 50 ff ff ff RSP: 0018:ffffc9000f7174f8 EFLAGS: 00010283 RAX: ffffffff8250d911 RBX: ffff888042d5b650 RCX: 0000000000100000 RDX: ffffc9000edea000 RSI: 0000000000001579 RDI: 000000000000157a RBP: 0000000000000000 R08: ffffffff9057b237 R09: 1ffffffff20af646 R10: dffffc0000000000 R11: fffffbfff20af647 R12: dffffc0000000000 R13: 1ffff110085ab6ca R14: ffff888042d5b608 R15: ffff888042d5b6d8 FS: 00007fb68a3f56c0(0000) GS:ffff88808c545000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000200000001000 CR3: 000000003f161000 CR4: 0000000000352ef0 Call Trace: inode_inc_link_count include/linux/fs.h:2256 [inline] minix_mkdir+0x44/0x120 fs/minix/namei.c:117 vfs_mkdir+0x406/0x620 fs/namei.c:5276 ovl_do_mkdir fs/overlayfs/overlayfs.h:257 [inline] ovl_workdir_create+0x45f/0x8b0 fs/overlayfs/super.c:345 ovl_make_workdir fs/overlayfs/super.c:678 [inline] ovl_get_workdir fs/overlayfs/super.c:836 [inline] ovl_fill_super_creds fs/overlayfs/super.c:1449 [inline] ovl_fill_super+0x19ad/0x5d40 fs/overlayfs/super.c:1560 vfs_get_super fs/super.c:1267 [inline] get_tree_nodev+0xbb/0x150 fs/super.c:1286 vfs_get_tree+0x92/0x2a0 fs/super.c:1694 fc_mount fs/namespace.c:1198 [inline] do_new_mount_fc fs/namespace.c:3765 [inline] do_new_mount+0x319/0xdc0 fs/namespace.c:3841 do_mount fs/namespace.c:4174 [inline] __do_sys_mount fs/namespace.c:4390 [inline] __se_sys_mount+0x31d/0x420 fs/namespace.c:4367 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0x174/0x580 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fb68df9de99 Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 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 e8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007fb68a3f4fe8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 00007fb68e225fa0 RCX: 00007fb68df9de99 RDX: 0000200000000b80 RSI: 00002000000000c0 RDI: 0000000000000000 RBP: 00007fb68e033eaf R08: 0000200000000140 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fb68e226038 R14: 00007fb68e225fa0 R15: 00007ffce160afe8