------------[ cut here ]------------
WARNING: fs/namespace.c:1434 at mntput_no_expire+0x78e/0xbe0, CPU#0: logrotate/149010
Modules linked in:
CPU: 0 UID: 0 PID: 149010 Comm: logrotate Tainted: G W 6.17.0-rc4-next-20250901 #1 PREEMPT(voluntary)
Tainted: [W]=WARN
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014
RIP: 0010:mntput_no_expire+0x78e/0xbe0
Code: 05 d6 30 81 04 01 e8 71 df 91 ff e9 41 fc ff ff e8 27 47 b4 ff 31 ff 44 89 ee e8 4d 42 b4 ff 45 85 ed 79 09 e8 13 47 b4 ff 90 <0f> 0b 90 e8 0a 47 b4 ff e8 b5 2d fc 02 31 ff 89 c5 89 c6 e8 2a 42
RSP: 0018:ffff88801664fbd0 EFLAGS: 00010293
RAX: 0000000000000000 RBX: 1ffff11002cc9f7f RCX: ffffffff81bfaf93
RDX: ffff888025043700 RSI: ffffffff81bfaf9d RDI: 0000000000000005
RBP: ffff88801745ec40 R08: 0000000000000001 R09: 0000000000000000
R10: 00000000ffffffff R11: 0000000000000001 R12: ffff88801664fc38
R13: 00000000ffffffff R14: dead000000000100 R15: ffff88801745ec40
FS: 0000000000000000(0000) GS:ffff8880e55d8000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f2185ad6514 CR3: 0000000005a88000 CR4: 0000000000350ef0
Call Trace:
namespace_unlock+0x57d/0x810
put_mnt_ns+0xf5/0x120
free_nsproxy+0x3a/0x400
switch_task_namespaces+0xe2/0x100
do_exit+0x841/0x2970
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: 0033:0x7f2185bcd699
Code: Unable to access opcode bytes at 0x7f2185bcd66f.
RSP: 002b:00007ffed9919db8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
RAX: ffffffffffffffda RBX: 00007f2185cc2610 RCX: 00007f2185bcd699
RDX: 000000000000003c RSI: 00000000000000e7 RDI: 0000000000000000
RBP: 0000000000000000 R08: fffffffffffffe98 R09: 0000000000000001
R10: 0000000000000007 R11: 0000000000000246 R12: 00007f2185cc2610
R13: 0000000000000001 R14: 00007f2185cc2ae8 R15: 0000000000000000
irq event stamp: 218897
hardirqs last enabled at (218907): [] __up_console_sem+0x78/0x80
hardirqs last disabled at (218916): [] __up_console_sem+0x5d/0x80
softirqs last enabled at (218886): [] handle_softirqs+0x50c/0x770
softirqs last disabled at (218861): [] __irq_exit_rcu+0xc4/0x100
---[ end trace 0000000000000000 ]---
kmemleak: Found object by alias at 0x607f1a63e8bc
CPU: 0 UID: 0 PID: 149029 Comm: syz-executor.6 Tainted: G W 6.17.0-rc4-next-20250901 #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: 0033:0x7fc162791b19
Code: Unable to access opcode bytes at 0x7fc162791aef.
RSP: 002b:00007fc15fd07218 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: 0000000000000001 RBX: 00007fc1628a4f68 RCX: 00007fc162791b19
RDX: 00000000000f4240 RSI: 0000000000000081 RDI: 00007fc1628a4f6c
RBP: 00007fc1628a4f60 R08: 0000000000000009 R09: 0000000000000000
R10: ffffffffffffffff R11: 0000000000000246 R12: 00007fc1628a4f6c
R13: 00007ffd4dd1b6ef R14: 00007fc15fd07300 R15: 0000000000022000
kmemleak: Object (percpu) 0x607f1a63e8b8 (size 8):
kmemleak: comm "(ogrotate)", pid 149010, jiffies 4297211861
kmemleak: min_count = 1
kmemleak: count = 1
kmemleak: flags = 0x21
kmemleak: checksum = 0
kmemleak: backtrace:
pcpu_alloc_noprof+0x87a/0x1170
alloc_vfsmnt+0x135/0x6e0
clone_mnt+0x6c/0xb70
copy_tree+0x34b/0xaf0
copy_mnt_ns+0x1ab/0xab0
create_new_namespaces+0xd6/0xab0
unshare_nsproxy_namespaces+0xc0/0x200
ksys_unshare+0x468/0xa10
__x64_sys_unshare+0x31/0x40
do_syscall_64+0xbf/0x360
entry_SYSCALL_64_after_hwframe+0x77/0x7f
kmemleak: Found object by alias at 0x607f1a63e8bc
CPU: 0 UID: 0 PID: 149409 Comm: syz-executor.6 Tainted: G W 6.17.0-rc4-next-20250901 #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: 0033:0x7fc162791b19
Code: Unable to access opcode bytes at 0x7fc162791aef.
RSP: 002b:00007fc15fd07218 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: 0000000000000001 RBX: 00007fc1628a4f68 RCX: 00007fc162791b19
RDX: 00000000000f4240 RSI: 0000000000000081 RDI: 00007fc1628a4f6c
RBP: 00007fc1628a4f60 R08: 000000000000000e R09: 0000000000000000
R10: 000000000000001e R11: 0000000000000246 R12: 00007fc1628a4f6c
R13: 00007ffd4dd1b6ef R14: 00007fc15fd07300 R15: 0000000000022000
kmemleak: Object (percpu) 0x607f1a63e8b8 (size 8):
kmemleak: comm "(ogrotate)", pid 149010, jiffies 4297211861
kmemleak: min_count = 1
kmemleak: count = 1
kmemleak: flags = 0x21
kmemleak: checksum = 0
kmemleak: backtrace:
pcpu_alloc_noprof+0x87a/0x1170
alloc_vfsmnt+0x135/0x6e0
clone_mnt+0x6c/0xb70
copy_tree+0x34b/0xaf0
copy_mnt_ns+0x1ab/0xab0
create_new_namespaces+0xd6/0xab0
unshare_nsproxy_namespaces+0xc0/0x200
ksys_unshare+0x468/0xa10
__x64_sys_unshare+0x31/0x40
do_syscall_64+0xbf/0x360
entry_SYSCALL_64_after_hwframe+0x77/0x7f