FAULT_INJECTION: forcing a failure.
name failslab, interval 1, probability 0, space 0, times 1
CPU: 0 UID: 0 PID: 5320 Comm: syz.0.0 Not tainted 6.13.0-rc5-syzkaller-00161-g63676eefb7a0 #0
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:94 [inline]
 dump_stack_lvl+0x241/0x360 lib/dump_stack.c:120
 fail_dump lib/fault-inject.c:53 [inline]
 should_fail_ex+0x3b0/0x4e0 lib/fault-inject.c:154
 should_failslab+0xac/0x100 mm/failslab.c:46
 slab_pre_alloc_hook mm/slub.c:4072 [inline]
 slab_alloc_node mm/slub.c:4148 [inline]
 __kmalloc_cache_noprof+0x70/0x390 mm/slub.c:4324
 kmalloc_noprof include/linux/slab.h:901 [inline]
 kzalloc_noprof include/linux/slab.h:1037 [inline]
 ovl_encode_real_fh+0xdf/0x410 fs/overlayfs/copy_up.c:431
 ovl_dentry_to_fid fs/overlayfs/export.c:239 [inline]
 ovl_encode_fh+0x388/0xc20 fs/overlayfs/export.c:274
 exportfs_encode_inode_fh fs/exportfs/expfs.c:393 [inline]
 exportfs_encode_fh+0x1ae/0x480 fs/exportfs/expfs.c:431
 ovl_encode_real_fh+0x129/0x410 fs/overlayfs/copy_up.c:441
 ovl_get_index_name fs/overlayfs/namei.c:741 [inline]
 ovl_lookup_index+0x71/0x6e0 fs/overlayfs/namei.c:790
 ovl_lookup+0x1d6b/0x2a60 fs/overlayfs/namei.c:1271
 __lookup_slow+0x28c/0x3f0 fs/namei.c:1791
 lookup_slow+0x53/0x70 fs/namei.c:1808
 walk_component+0x2e1/0x410 fs/namei.c:2112
 lookup_last fs/namei.c:2610 [inline]
 path_lookupat+0x16f/0x450 fs/namei.c:2634
 filename_lookup+0x2a3/0x670 fs/namei.c:2663
 user_path_at+0x3a/0x60 fs/namei.c:3070
 do_fchownat+0xed/0x240 fs/open.c:803
 __do_sys_fchownat fs/open.c:824 [inline]
 __se_sys_fchownat fs/open.c:821 [inline]
 __x64_sys_fchownat+0xb5/0xd0 fs/open.c:821
 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: 0033:0x7fa333785d29
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:00007fa3331f8038 EFLAGS: 00000246 ORIG_RAX: 0000000000000104
RAX: ffffffffffffffda RBX: 00007fa333975fa0 RCX: 00007fa333785d29
RDX: 0000000000000000 RSI: 0000000020000440 RDI: ffffffffffffff9c
RBP: 00007fa3331f8090 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002
R13: 0000000000000000 R14: 00007fa333975fa0 R15: 00007fffde3ae4f8
 </TASK>
------------[ cut here ]------------
WARNING: CPU: 0 PID: 5320 at fs/overlayfs/copy_up.c:447 ovl_encode_real_fh+0x2e2/0x410 fs/overlayfs/copy_up.c:447
Modules linked in:
CPU: 0 UID: 0 PID: 5320 Comm: syz.0.0 Not tainted 6.13.0-rc5-syzkaller-00161-g63676eefb7a0 #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:ovl_encode_real_fh+0x2e2/0x410 fs/overlayfs/copy_up.c:447
Code: 41 5c 41 5d 41 5e 41 5f 5d c3 cc cc cc cc e8 f5 71 7c fe 90 0f 0b 90 eb 14 e8 ea 71 7c fe 90 0f 0b 90 eb 09 e8 df 71 7c fe 90 <0f> 0b 90 4c 89 ff e8 93 3a d7 fe 49 c7 c7 fb ff ff ff eb 8b 89 d1
RSP: 0018:ffffc9000d3af560 EFLAGS: 00010293
RAX: ffffffff83231241 RBX: 1ffff92001a75eb4 RCX: ffff88801a924880
RDX: 0000000000000000 RSI: 00000000000000ff RDI: 00000000000000ff
RBP: ffffc9000d3af610 R08: ffffffff832310dc R09: 1ffffffff2033026
R10: dffffc0000000000 R11: fffffbfff2033027 R12: 00000000000000ff
R13: 0000000000000080 R14: 1ffff92001a75eb0 R15: ffff88801a854b00
FS:  00007fa3331f86c0(0000) GS:ffff88801fc00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fa3344ad9b8 CR3: 0000000036a98000 CR4: 0000000000352ef0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 ovl_get_index_name fs/overlayfs/namei.c:741 [inline]
 ovl_lookup_index+0x71/0x6e0 fs/overlayfs/namei.c:790
 ovl_lookup+0x1d6b/0x2a60 fs/overlayfs/namei.c:1271
 __lookup_slow+0x28c/0x3f0 fs/namei.c:1791
 lookup_slow+0x53/0x70 fs/namei.c:1808
 walk_component+0x2e1/0x410 fs/namei.c:2112
 lookup_last fs/namei.c:2610 [inline]
 path_lookupat+0x16f/0x450 fs/namei.c:2634
 filename_lookup+0x2a3/0x670 fs/namei.c:2663
 user_path_at+0x3a/0x60 fs/namei.c:3070
 do_fchownat+0xed/0x240 fs/open.c:803
 __do_sys_fchownat fs/open.c:824 [inline]
 __se_sys_fchownat fs/open.c:821 [inline]
 __x64_sys_fchownat+0xb5/0xd0 fs/open.c:821
 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: 0033:0x7fa333785d29
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:00007fa3331f8038 EFLAGS: 00000246 ORIG_RAX: 0000000000000104
RAX: ffffffffffffffda RBX: 00007fa333975fa0 RCX: 00007fa333785d29
RDX: 0000000000000000 RSI: 0000000020000440 RDI: ffffffffffffff9c
RBP: 00007fa3331f8090 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002
R13: 0000000000000000 R14: 00007fa333975fa0 R15: 00007fffde3ae4f8
 </TASK>