------------[ cut here ]------------
WARNING: ./include/linux/ns_common.h:288 at alloc_pid+0xcc8/0x1150, CPU#1: syz-executor.5/285
Modules linked in:
CPU: 1 UID: 0 PID: 285 Comm: syz-executor.5 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:ffff8880168a7ab0 EFLAGS: 00010293
RAX: 0000000000000000 RBX: ffff88800a360501 RCX: ffffffff814320ca
RDX: ffff8880164c9bc0 RSI: ffffffff814320d7 RDI: 0000000000000001
RBP: ffff88806cf35da0 R08: 0000000000000001 R09: ffffed100146c0d9
R10: 0000000000000001 R11: 0000000000000001 R12: ffff88806cf35dc8
R13: ffffffff85d04820 R14: ffff88804e722f00 R15: ffff88800a360560
FS: 000055556bbc7400(0000) GS:ffff8880e549c000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000555574744708 CR3: 0000000016894000 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: 0033:0x7f5a2f9f010b
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:00007ffe4cb7ec70 EFLAGS: 00000246 ORIG_RAX: 0000000000000038
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f5a2f9f010b
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000001200011
RBP: 0000000000000001 R08: 0000000000000000 R09: 000055556bbc7400
R10: 000055556bbc76d0 R11: 0000000000000246 R12: 0000000000000001
R13: 0000000000000001 R14: 0000000000000001 R15: 00007ffe4cb7ed50
irq event stamp: 913779
hardirqs last enabled at (913787): [] __up_console_sem+0x78/0x80
hardirqs last disabled at (913796): [] __up_console_sem+0x5d/0x80
softirqs last enabled at (913520): [] handle_softirqs+0x50c/0x770
softirqs last disabled at (913505): [] __irq_exit_rcu+0xc4/0x100
---[ end trace 0000000000000000 ]---
loop6: detected capacity change from 0 to 264192
FAULT_INJECTION: forcing a failure.
name failslab, interval 1, probability 0, space 0, times 0
CPU: 0 UID: 0 PID: 11262 Comm: syz-executor.7 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
__kmalloc_node_track_caller_noprof+0xc6/0x690
kmemdup_nul+0x3b/0xa0
vfs_parse_fs_qstr+0x112/0x1c0
vfs_parse_monolithic_sep+0x198/0x220
path_mount+0x6d6/0x2140
__x64_sys_mount+0x293/0x310
do_syscall_64+0xbf/0x430
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f21c33d004a
Code: 48 c7 c2 bc ff ff ff f7 d8 64 89 02 b8 ff ff ff ff eb d2 e8 b8 04 00 00 0f 1f 84 00 00 00 00 00 49 89 ca b8 a5 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:00007f21c0943fa8 EFLAGS: 00000206 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f21c33d004a
RDX: 00000000200002c0 RSI: 0000000020000300 RDI: 0000000000000000
RBP: 00007f21c0944040 R08: 00007f21c0944040 R09: 00000000200002c0
R10: 0000000000000000 R11: 0000000000000206 R12: 00000000200002c0
R13: 0000000020000300 R14: 00007f21c0944000 R15: 0000000020000700
FAULT_INJECTION: forcing a failure.
name failslab, interval 1, probability 0, space 0, times 0
CPU: 0 UID: 0 PID: 11265 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
dst_alloc+0x9c/0x620
rt_dst_alloc+0x50/0x3d0
ip_route_output_key_hash_rcu+0x894/0x2370
ip_route_output_key_hash+0x10f/0x2b0
ip_route_output_flow+0x27/0x150
raw_sendmsg+0xbef/0x3020
inet_sendmsg+0x121/0x150
__sys_sendto+0x4a2/0x570
__x64_sys_sendto+0xe1/0x1c0
do_syscall_64+0xbf/0x430
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f3413b30b19
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 bc ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f34110a6188 EFLAGS: 00000246 ORIG_RAX: 000000000000002c
RAX: ffffffffffffffda RBX: 00007f3413c43f60 RCX: 00007f3413b30b19
RDX: 0000000000000038 RSI: 0000000020000180 RDI: 0000000000000003
RBP: 00007f34110a61d0 R08: 0000000020000000 R09: 0000000000000010
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001
R13: 00007ffcb02554cf R14: 00007f34110a6300 R15: 0000000000022000
warning: checkpointing journal with EXT4_IOC_CHECKPOINT_FLAG_ZEROOUT can be slow
EXT4-fs (loop6): unsupported descriptor size 1344
No source specified
warning: checkpointing journal with EXT4_IOC_CHECKPOINT_FLAG_ZEROOUT can be slow
loop6: detected capacity change from 0 to 264192
EXT4-fs (loop6): unsupported descriptor size 1344
No source specified
loop6: detected capacity change from 0 to 264192
FAULT_INJECTION: forcing a failure.
name fail_usercopy, interval 1, probability 0, space 0, times 0
CPU: 0 UID: 0 PID: 11647 Comm: syz-executor.7 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
_copy_to_user+0x32/0xd0
simple_read_from_buffer+0xe0/0x180
proc_fail_nth_read+0x18a/0x240
vfs_read+0x1eb/0xc70
ksys_read+0x121/0x240
do_syscall_64+0xbf/0x430
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f21c338169c
Code: ec 28 48 89 54 24 18 48 89 74 24 10 89 7c 24 08 e8 f9 fc ff ff 48 8b 54 24 18 48 8b 74 24 10 41 89 c0 8b 7c 24 08 31 c0 0f 05 <48> 3d 00 f0 ff ff 77 34 44 89 c7 48 89 44 24 08 e8 2f fd ff ff 48
RSP: 002b:00007f21c0944170 EFLAGS: 00000246 ORIG_RAX: 0000000000000000