kernel_clone+0xea/0x7f0
__do_sys_clone+0xce/0x120
do_syscall_64+0xbf/0x360
entry_SYSCALL_64_after_hwframe+0x77/0x7f
------------[ cut here ]------------
WARNING: fs/namespace.c:1375 at cleanup_mnt+0x33f/0x430, CPU#1: syz-executor.5/4017
Modules linked in:
CPU: 1 UID: 0 PID: 4017 Comm: syz-executor.5 Tainted: G W 6.17.0-rc3-next-20250829 #1 PREEMPT(voluntary)
Tainted: [W]=WARN
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014
RIP: 0010:cleanup_mnt+0x33f/0x430
Code: c7 a0 45 d1 85 e8 01 7c fa 02 49 8d 7d 40 5b 48 c7 c6 10 e2 be 81 5d 41 5c 41 5d 41 5e 41 5f e9 57 b3 9c ff e8 82 46 b4 ff 90 <0f> 0b 90 e9 e6 fc ff ff e8 74 46 b4 ff 4c 89 ef e8 6c d7 06 00 e9
RSP: 0018:ffff888047cb7d10 EFLAGS: 00010293
RAX: 0000000000000000 RBX: 0000000000000001 RCX: ffffffff81bf9de5
RDX: ffff888047c35280 RSI: ffffffff81bfa0fe RDI: 0000000000000005
RBP: ffff88801f040200 R08: 0000000000000000 R09: 0000000000000001
R10: 0000000000000001 R11: 0000000000000000 R12: ffff888047c35b58
R13: ffff88801f040000 R14: 0000000000000001 R15: ffff88801f040040
FS: 0000000000000000(0000) GS:ffff8880e56dd000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000000000000e CR3: 000000000d750000 CR4: 0000000000350ef0
Call Trace:
task_work_run+0x172/0x280
do_exit+0x846/0x2970
do_group_exit+0xd3/0x2a0
__x64_sys_exit_group+0x3e/0x50
x64_sys_call+0x18c5/0x18d0
do_syscall_64+0xbf/0x360
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fb88e6a6b19
Code: Unable to access opcode bytes at 0x7fb88e6a6aef.
RSP: 002b:00007fb88bc1bbc8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
RAX: ffffffffffffffda RBX: 00007fb88e7b9f60 RCX: 00007fb88e6a6b19
RDX: 00007fb88e6a6b19 RSI: 0000000000000000 RDI: 000000000000000b
RBP: 000000000000000b R08: 0000000000000000 R09: 00007fb88e7b9f60
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffc5803038f R14: 00007fb88bc1c300 R15: 0000000000022000
irq event stamp: 599
hardirqs last enabled at (607): [] __up_console_sem+0x78/0x80
hardirqs last disabled at (616): [] __up_console_sem+0x5d/0x80
softirqs last enabled at (326): [] handle_softirqs+0x50c/0x770
softirqs last disabled at (321): [] __irq_exit_rcu+0xc4/0x100
---[ end trace 0000000000000000 ]---
BUG: Bad rss-counter state mm:00000000ef7ee17d type:MM_ANONPAGES val:-12 Comm:syz-fuzzer Pid:253
kmemleak: Found object by alias at 0x607f1a63984c
CPU: 0 UID: 0 PID: 4031 Comm: syz-executor.7 Tainted: G W 6.17.0-rc3-next-20250829 #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+0xca/0x120
__lookup_object+0x94/0xb0
delete_object_full+0x27/0x70
free_percpu+0x30/0x1160
futex_hash_free+0x38/0xc0
mmput+0x2d3/0x390
do_exit+0x79d/0x2970
do_group_exit+0xd3/0x2a0
get_signal+0x2315/0x2340
arch_do_signal_or_restart+0x80/0x790
exit_to_user_mode_loop+0x8b/0x110
do_syscall_64+0x2f7/0x360
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f663fe75b19
Code: Unable to access opcode bytes at 0x7f663fe75aef.
RSP: 002b:00007f663d3eb218 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: fffffffffffffe00 RBX: 00007f663ff88f68 RCX: 00007f663fe75b19
RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007f663ff88f68
RBP: 00007f663ff88f60 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f663ff88f6c
R13: 00007ffeb7acf9ff R14: 00007f663d3eb300 R15: 0000000000022000
kmemleak: Object (percpu) 0x607f1a639840 (size 16):
kmemleak: comm "syz-executor.7", pid 286, jiffies 4294814747
kmemleak: min_count = 1
kmemleak: count = 0
kmemleak: flags = 0x21
kmemleak: checksum = 0
kmemleak: backtrace:
pcpu_alloc_noprof+0x87a/0x1170
__percpu_counter_init_many+0x44/0x360
mm_init+0xcac/0x1170
copy_process+0x3ab7/0x73c0
kernel_clone+0xea/0x7f0
__do_sys_clone+0xce/0x120
do_syscall_64+0xbf/0x360
entry_SYSCALL_64_after_hwframe+0x77/0x7f