------------[ cut here ]------------
WARNING: fs/namespace.c:1434 at mntput_no_expire+0x78e/0xbe0, CPU#1: syz-executor.4/5396
Modules linked in:
CPU: 1 UID: 0 PID: 5396 Comm: syz-executor.4 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:mntput_no_expire+0x78e/0xbe0
Code: 05 16 42 81 04 01 e8 31 f8 91 ff e9 41 fc ff ff e8 b7 50 b4 ff 31 ff 44 89 ee e8 dd 4b b4 ff 45 85 ed 79 09 e8 a3 50 b4 ff 90 <0f> 0b 90 e8 9a 50 b4 ff e8 75 f6 fb 02 31 ff 89 c5 89 c6 e8 ba 4b
RSP: 0018:ffff888017c77bd0 EFLAGS: 00010293
RAX: 0000000000000000 RBX: 1ffff11002f8ef7f RCX: ffffffff81bf96d3
RDX: ffff88801c0db700 RSI: ffffffff81bf96dd RDI: 0000000000000005
RBP: ffff888019094fc0 R08: 0000000000000001 R09: 0000000000000000
R10: 00000000ffffffff R11: 0000000000000001 R12: ffff888017c77c38
R13: 00000000ffffffff R14: dead000000000100 R15: ffff888019094fc0
FS: 0000000000000000(0000) GS:ffff8880e56dd000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f43c3e8502c CR3: 0000000044dbc000 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: 0033:0x7fec88c36b19
Code: Unable to access opcode bytes at 0x7fec88c36aef.
RSP: 002b:00007ffc2ff08d98 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007fec88c36b19
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000043
RBP: 0000000000000000 R08: 0000000000000014 R09: 0000000000000005
R10: 0000000000000000 R11: 0000000000000246 R12: 00007fec88c910c3
R13: 0000000000000000 R14: 0000000000000007 R15: 00007ffc2ff08f80
irq event stamp: 180823
hardirqs last enabled at (180833): [] __up_console_sem+0x78/0x80
hardirqs last disabled at (180842): [] __up_console_sem+0x5d/0x80
softirqs last enabled at (180772): [] handle_softirqs+0x50c/0x770
softirqs last disabled at (180767): [] __irq_exit_rcu+0xc4/0x100
---[ end trace 0000000000000000 ]---
loop6: detected capacity change from 0 to 184
EXT4-fs warning (device sda): verify_group_input:136: Cannot add at group 0 (only 16 groups)
loop0: detected capacity change from 0 to 735
iso9660: Unknown parameter 'L'
loop0: detected capacity change from 0 to 735
iso9660: Unknown parameter 'L'
audit: type=1400 audit(1756532714.528:10): avc: denied { write } for pid=5897 comm="syz-executor.1" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=perf_event permissive=1
msdos: Unknown parameter 'chesk'
kmemleak: Found object by alias at 0x607f1a639494
CPU: 1 UID: 0 PID: 39 Comm: kworker/1:1 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
Workqueue: cgwb_release cgwb_release_workfn
Call Trace:
dump_stack_lvl+0xca/0x120
__lookup_object+0x94/0xb0
delete_object_full+0x27/0x70
free_percpu+0x30/0x1160
percpu_counter_destroy_many+0x188/0x2b0
cgwb_release_workfn+0x25b/0x900
process_one_work+0x8e1/0x19c0
worker_thread+0x67e/0xe90
kthread+0x3c8/0x740
ret_from_fork+0x34b/0x430
ret_from_fork_asm+0x1a/0x30
kmemleak: Object (percpu) 0x607f1a639490 (size 8):
kmemleak: comm "syz-executor.7", pid 5906, jiffies 4294902886
kmemleak: min_count = 1
kmemleak: count = 0
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: Cannot insert 0x607f1a639494 into the object search tree (overlaps existing)
CPU: 1 UID: 0 PID: 5906 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
__link_object+0x190/0x210
__create_object+0x48/0x80
pcpu_alloc_noprof+0x87a/0x1170
__percpu_counter_init_many+0x44/0x360
msg_init_ns+0x120/0x1a0
copy_ipcs+0x4cb/0x630
create_new_namespaces+0x210/0xab0
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
RIP: 0033:0x7f88d8ee4b19
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:00007f88d645a188 EFLAGS: 00000246 ORIG_RAX: 0000000000000110
RAX: ffffffffffffffda RBX: 00007f88d8ff7f60 RCX: 00007f88d8ee4b19
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000008020080
RBP: 00007f88d8f3ef6d R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fffb7412f0f R14: 00007f88d645a300 R15: 0000000000022000
kmemleak: Kernel memory leak detector disabled
kmemleak: Object (percpu) 0x607f1a639490 (size 8):
kmemleak: comm "syz-executor.7", pid 5906, jiffies 4294902886
kmemleak: min_count = 1
kmemleak: count = 0
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: Automatic memory scanning thread ended
Bluetooth: hci2: unexpected cc 0x0c03 length: 249 > 1
Bluetooth: hci2: unexpected cc 0x1003 length: 249 > 9
Bluetooth: hci2: unexpected cc 0x1001 length: 249 > 9
Bluetooth: hci2: unexpected cc 0x0c23 length: 249 > 4
Bluetooth: hci2: unexpected cc 0x0c38 length: 249 > 2
Bluetooth: hci2: command tx timeout
Bluetooth: hci2: command tx timeout
Bluetooth: hci2: command tx timeout