loop2: detected capacity change from 0 to 1024
------------[ cut here ]------------
WARNING: ./include/linux/ns_common.h:288 at alloc_pid+0xcc8/0x1150, CPU#0: syz-executor.0/277
Modules linked in:
CPU: 0 UID: 0 PID: 277 Comm: syz-executor.0 Not tainted 6.18.0-rc5-next-20251111 #1 PREEMPT(voluntary)
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014
RIP: 0010:alloc_pid+0xcc8/0x1150
Code: 00 00 00 e8 7a 12 6f 00 f0 83 83 68 01 00 00 01 0f 98 c3 31 ff 89 de e8 66 84 31 00 84 db 0f 84 bc f3 ff ff e8 89 89 31 00 90 <0f> 0b 90 e9 ae f3 ff ff e8 7b 89 31 00 90 48 c7 c6 40 16 e7 84 48
RSP: 0018:ffff88801674fab0 EFLAGS: 00010293
RAX: 0000000000000000 RBX: ffff888013578001 RCX: ffffffff814320ca
RDX: ffff8880173a0000 RSI: ffffffff814320d7 RDI: 0000000000000001
RBP: ffff88806ce35da0 R08: 0000000000000001 R09: ffffed10026af02d
R10: 0000000000000001 R11: 0000000000000001 R12: ffff88806ce35dc8
R13: ffffffff85d04820 R14: ffff888008fded80 R15: ffff888013578000
FS: 0000555561939400(0000) GS:ffff8880e539c000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f3f37991fe8 CR3: 000000000d6c2000 CR4: 0000000000350ef0
Call Trace:
copy_process+0x3be1/0x72a0
kernel_clone+0xea/0x7f0
__do_sys_clone+0xce/0x120
do_syscall_64+0xbf/0x430
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f424ac6f10b
Code: ed 0f 85 60 01 00 00 64 4c 8b 0c 25 10 00 00 00 45 31 c0 4d 8d 91 d0 02 00 00 31 d2 31 f6 bf 11 00 20 01 b8 38 00 00 00 0f 05 <48> 3d 00 f0 ff ff 0f 87 89 00 00 00 41 89 c5 85 c0 0f 85 90 00 00
RSP: 002b:00007ffdbe0b51f0 EFLAGS: 00000246 ORIG_RAX: 0000000000000038
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f424ac6f10b
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000001200011
RBP: 0000000000000001 R08: 0000000000000000 R09: 0000555561939400
R10: 00005555619396d0 R11: 0000000000000246 R12: 0000000000000001
R13: 0000000000000000 R14: 0000000000000001 R15: 00007ffdbe0b52d0
irq event stamp: 477445
hardirqs last enabled at (477455): [] __up_console_sem+0x78/0x80
hardirqs last disabled at (477464): [] __up_console_sem+0x5d/0x80
softirqs last enabled at (477812): [] handle_softirqs+0x50c/0x770
softirqs last disabled at (477823): [] __irq_exit_rcu+0xc4/0x100
---[ end trace 0000000000000000 ]---
EXT4-fs error (device loop2): ext4_quota_enable:7137: inode #3: comm syz-executor.2: iget: special inode unallocated
loop1: detected capacity change from 0 to 1024
EXT4-fs error (device loop2): ext4_quota_enable:7139: comm syz-executor.2: Bad quota inode: 3, type: 0
FAULT_INJECTION: forcing a failure.
name failslab, interval 1, probability 0, space 0, times 0
EXT4-fs warning (device loop2): ext4_enable_quotas:7177: Failed to enable quota tracking (type=0, err=-117, ino=3). Please run e2fsck to fix.
CPU: 0 UID: 0 PID: 6325 Comm: syz-executor.4 Tainted: G W 6.18.0-rc5-next-20251111 #1 PREEMPT(voluntary)
Tainted: [W]=WARN
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014
Call Trace:
dump_stack_lvl+0xfa/0x120
should_fail_ex+0x4d7/0x5e0
should_failslab+0xc2/0x120
kmem_cache_alloc_noprof+0x80/0x690
__kernfs_new_node+0xd3/0x870
kernfs_new_node+0x13c/0x1e0
kernfs_create_dir_ns+0x4d/0x1a0
internal_create_group+0xa7f/0xeb0
loop_configure+0xc46/0x15a0
lo_ioctl+0x66d/0x1ca0
blkdev_ioctl+0x365/0x6d0
__x64_sys_ioctl+0x18f/0x210
do_syscall_64+0xbf/0x430
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f64442318d7
Code: 3c 1c 48 f7 d8 49 39 c4 72 b8 e8 a4 54 02 00 85 c0 78 bd 48 83 c4 08 4c 89 e0 5b 41 5c c3 0f 1f 44 00 00 b8 10 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 bc ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f64417a6e98 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f644427b970 RCX: 00007f64442318d7
RDX: 0000000000000004 RSI: 0000000000004c00 RDI: 0000000000000005
RBP: 0000000000000005 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000004
R13: 0000000000000004 R14: 00000000200003d8 R15: 0000000000000001
loop4: detected capacity change from 0 to 16383
EXT4-fs (loop2): mount failed
loop5: detected capacity change from 0 to 16383
EXT4-fs error (device loop1): ext4_quota_enable:7137: inode #3: comm syz-executor.1: iget: special inode unallocated
EXT4-fs error (device loop1): ext4_quota_enable:7139: comm syz-executor.1: Bad quota inode: 3, type: 0
EXT4-fs warning (device loop1): ext4_enable_quotas:7177: Failed to enable quota tracking (type=0, err=-117, ino=3). Please run e2fsck to fix.
EXT4-fs (loop1): mount failed