------------[ cut here ]------------
WARNING: fs/namespace.c:1375 at cleanup_mnt+0x33f/0x430, CPU#0: syz-executor.1/280
Modules linked in:
CPU: 0 UID: 0 PID: 280 Comm: syz-executor.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
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:ffff888017127e20 EFLAGS: 00010293
RAX: 0000000000000000 RBX: 00000000ffffffff RCX: ffffffff81bf9de5
RDX: ffff88801bcb1b80 RSI: ffffffff81bfa0fe RDI: 0000000000000005
RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000001
R10: 00000000ffffffff R11: 0000000000000001 R12: ffff88801bcb2458
R13: ffff88800c7d1880 R14: 0000000000000001 R15: ffff88800c7d18c0
FS: 0000555595142400(0000) GS:ffff8880e55dd000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f0c9f888710 CR3: 0000000037167000 CR4: 0000000000350ef0
Call Trace:
task_work_run+0x172/0x280
exit_to_user_mode_loop+0xef/0x110
do_syscall_64+0x2f7/0x360
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fb352499f87
Code: ff ff ff f7 d8 64 89 01 48 83 c8 ff c3 66 0f 1f 44 00 00 31 f6 e9 09 00 00 00 66 0f 1f 84 00 00 00 00 00 b8 a6 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:00007ffdb6f703b8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
RAX: 0000000000000000 RBX: 000000000000001a RCX: 00007fb352499f87
RDX: 00007ffdb6f70489 RSI: 000000000000000a RDI: 00007ffdb6f70480
RBP: 00007ffdb6f70480 R08: 00000000ffffffff R09: 00007ffdb6f70250
R10: 0000555595143c7b R11: 0000000000000246 R12: 00007fb3524f2105
R13: 00007ffdb6f71540 R14: 0000555595143c20 R15: 00007ffdb6f71580
irq event stamp: 204651
hardirqs last enabled at (204659): [] __up_console_sem+0x78/0x80
hardirqs last disabled at (204668): [] __up_console_sem+0x5d/0x80
softirqs last enabled at (204630): [] handle_softirqs+0x50c/0x770
softirqs last disabled at (204615): [] __irq_exit_rcu+0xc4/0x100
---[ end trace 0000000000000000 ]---
kmemleak: Found object by alias at 0x607f1a639854
CPU: 0 UID: 0 PID: 4094 Comm: syz-executor.6 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
__x64_sys_exit_group+0x3e/0x50
x64_sys_call+0x18c5/0x18d0
do_syscall_64+0xbf/0x360
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f886ed6db19
Code: Unable to access opcode bytes at 0x7f886ed6daef.
RSP: 002b:00007ffe7e7ade28 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
RAX: ffffffffffffffda RBX: 000000000000001e RCX: 00007f886ed6db19
RDX: 00007f886ed2072b RSI: ffffffffffffffbc RDI: 0000000000000000
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000001
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001
R13: 0000000000000001 R14: 0000000000000001 R15: 00007ffe7e7adf10
kmemleak: Object (percpu) 0x607f1a639850 (size 8):
kmemleak: comm "syz-executor.1", pid 4099, jiffies 4294827378
kmemleak: min_count = 1
kmemleak: count = 0
kmemleak: flags = 0x21
kmemleak: checksum = 0
kmemleak: backtrace:
pcpu_alloc_noprof+0x87a/0x1170
alloc_vfsmnt+0x135/0x6e0
vfs_create_mount.part.0+0x40/0x440
path_mount+0x1637/0x1dd0
__x64_sys_mount+0x27b/0x300
do_syscall_64+0xbf/0x360
entry_SYSCALL_64_after_hwframe+0x77/0x7f
loop1: detected capacity change from 0 to 255
loop6: detected capacity change from 0 to 6
FAT-fs (loop6): Directory bread(block 6) failed
FAT-fs (loop6): Directory bread(block 7) failed
FAT-fs (loop6): Directory bread(block 8) failed
FAT-fs (loop6): Directory bread(block 9) failed
kmemleak: Found object by alias at 0x607f1a638d00
CPU: 0 UID: 0 PID: 4122 Comm: syz-executor.3 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
__x64_sys_exit_group+0x3e/0x50
x64_sys_call+0x18c5/0x18d0
do_syscall_64+0xbf/0x360
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f2713812b19
Code: Unable to access opcode bytes at 0x7f2713812aef.
RSP: 002b:00007fff5ad737d8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
RAX: ffffffffffffffda RBX: 000000000000001e RCX: 00007f2713812b19
RDX: 00007f27137c572b RSI: ffffffffffffffbc RDI: 0000000000000000
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000001
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001
R13: 0000000000000001 R14: 0000000000000001 R15: 00007fff5ad738c0
kmemleak: Object (percpu) 0x607f1a638cfc (size 8):
kmemleak: comm "(ogrotate)", pid 4118, jiffies 4294827748
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
Bluetooth: hci0: Opcode 0x0c1a failed: -4
Bluetooth: hci0: Opcode 0x0406 failed: -4
Bluetooth: hci0: Opcode 0x0406 failed: -4
Bluetooth: hci1: Opcode 0x0c1a failed: -4
loop1: detected capacity change from 0 to 255
Bluetooth: hci1: Opcode 0x0406 failed: -4
Bluetooth: hci1: Opcode 0x0406 failed: -4
Bluetooth: hci2: Opcode 0x0c1a failed: -4
Bluetooth: hci2: Opcode 0x0406 failed: -4
Bluetooth: hci2: Opcode 0x0406 failed: -4
Bluetooth: hci3: Opcode 0x0c1a failed: -4
Bluetooth: hci3: Opcode 0x0406 failed: -4
Bluetooth: hci3: Opcode 0x0406 failed: -4
Bluetooth: hci4: Opcode 0x0c1a failed: -4
Bluetooth: hci4: Opcode 0x0406 failed: -4
Bluetooth: hci4: Opcode 0x0406 failed: -4
Bluetooth: hci5: Opcode 0x0c1a failed: -4
Bluetooth: hci5: Opcode 0x0406 failed: -4
Bluetooth: hci5: Opcode 0x0406 failed: -4
Bluetooth: hci6: Opcode 0x0c1a failed: -4
Bluetooth: hci6: Opcode 0x0406 failed: -4
Bluetooth: hci6: Opcode 0x0406 failed: -4
Bluetooth: hci7: Opcode 0x0c1a failed: -4
Bluetooth: hci7: Opcode 0x0406 failed: -4
Bluetooth: hci7: Opcode 0x0406 failed: -4
Bluetooth: hci0: Opcode 0x0c1a failed: -4
Bluetooth: hci1: Opcode 0x0c1a failed: -4
Bluetooth: hci2: Opcode 0x0c1a failed: -4
Bluetooth: hci3: Opcode 0x0c1a failed: -4
Bluetooth: hci4: Opcode 0x0c1a failed: -4
Bluetooth: hci5: Opcode 0x0c1a failed: -4
Bluetooth: hci6: Opcode 0x0c1a failed: -4
Bluetooth: hci7: Opcode 0x0c1a failed: -4
Bluetooth: hci1: command 0x0c1a tx timeout
Bluetooth: hci0: command 0x0c1a tx timeout
------------[ cut here ]------------
WARNING: fs/namespace.c:1434 at mntput_no_expire+0x78e/0xbe0, CPU#0: logrotate/4118
Modules linked in:
CPU: 0 UID: 0 PID: 4118 Comm: logrotate 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:ffff88804680fbd0 EFLAGS: 00010293
RAX: 0000000000000000 RBX: 1ffff11008d01f7f RCX: ffffffff81bf96d3
RDX: ffff888016f60000 RSI: ffffffff81bf96dd RDI: 0000000000000005
RBP: ffff8880139d6c40 R08: 0000000000000001 R09: 0000000000000000
R10: 00000000ffffffff R11: 0000000000000001 R12: ffff88804680fc38
R13: 00000000ffffffff R14: dead000000000100 R15: ffff8880139d6c40
FS: 0000000000000000(0000) GS:ffff8880e55dd000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fa94b72c514 CR3: 0000000016d92000 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: 0033:0x7fa94b823699
Code: Unable to access opcode bytes at 0x7fa94b82366f.
RSP: 002b:00007ffdaebe7f68 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
RAX: ffffffffffffffda RBX: 00007fa94b918610 RCX: 00007fa94b823699
RDX: 000000000000003c RSI: 00000000000000e7 RDI: 0000000000000000
RBP: 0000000000000000 R08: fffffffffffffe98 R09: 0000000000000001
R10: 0000000000000007 R11: 0000000000000246 R12: 00007fa94b918610
R13: 0000000000000001 R14: 00007fa94b918ae8 R15: 0000000000000000
irq event stamp: 205809
hardirqs last enabled at (205817): [] __up_console_sem+0x78/0x80
hardirqs last disabled at (205826): [] __up_console_sem+0x5d/0x80
softirqs last enabled at (205640): [] handle_softirqs+0x50c/0x770
softirqs last disabled at (205625): [] __irq_exit_rcu+0xc4/0x100
---[ end trace 0000000000000000 ]---
Bluetooth: hci7: command 0x0c1a tx timeout
Bluetooth: hci6: command 0x0c1a tx timeout
Bluetooth: hci5: command 0x0c1a tx timeout
Bluetooth: hci4: command 0x0c1a tx timeout
Bluetooth: hci3: command 0x0c1a tx timeout
Bluetooth: hci2: command 0x0c1a tx timeout
------------[ cut here ]------------
percpu ref (css_release) <= 0 (-212) after switching to atomic
WARNING: lib/percpu-refcount.c:197 at percpu_ref_switch_to_atomic_rcu+0x3cc/0x480, CPU#1: systemd/1
Modules linked in:
CPU: 1 UID: 0 PID: 1 Comm: systemd 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:percpu_ref_switch_to_atomic_rcu+0x3cc/0x480
Code: 00 00 00 00 00 fc ff df 48 89 f9 48 c1 e9 03 80 3c 01 00 0f 85 9e 00 00 00 49 8b 75 e8 48 c7 c7 80 97 e2 84 e8 75 c5 e9 fe 90 <0f> 0b 90 90 e9 2b ff ff ff e8 f6 de 5f ff e9 9e fe ff ff e8 7c df
RSP: 0018:ffff88806cf08e20 EFLAGS: 00010286
RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffffff8139de70
RDX: ffff8880094f8000 RSI: ffffffff8139de7e RDI: 0000000000000001
RBP: 7fffffffffffff2b R08: 0000000000000001 R09: ffffed100d9e4801
R10: 0000000000000000 R11: 0000000000000001 R12: ffff88800c32c300
R13: ffff88800c32c320 R14: 0000000000000002 R15: 0000000000000003
FS: 00007f66dd92d900(0000) GS:ffff8880e56dd000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f1c2c41d000 CR3: 000000000f55c000 CR4: 0000000000350ef0
Call Trace:
rcu_core+0x7c8/0x1800
handle_softirqs+0x1b1/0x770
__irq_exit_rcu+0xc4/0x100
irq_exit_rcu+0x9/0x20
sysvec_apic_timer_interrupt+0x70/0x80
asm_sysvec_apic_timer_interrupt+0x1a/0x20
RIP: 0010:_raw_spin_unlock_irqrestore+0x34/0x50
Code: c7 18 53 48 89 f3 48 8b 74 24 10 e8 16 f5 93 fc 48 89 ef e8 4e 40 94 fc 80 e7 02 74 06 e8 b4 48 be fc fb 65 ff 0d 6c 4c c6 02 <74> 07 5b 5d e9 33 23 00 00 0f 1f 44 00 00 5b 5d e9 27 23 00 00 0f
RSP: 0018:ffff888009547a88 EFLAGS: 00000286
RAX: 0000000000589771 RBX: 0000000000000246 RCX: 0000000000000080
RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff84bde3bc
RBP: ffffffff85d091e0 R08: 0000000000000001 R09: 0000000000000001
R10: ffffffff8643ac57 R11: 0000000000000001 R12: 0000000000000000
R13: 0000000000000246 R14: ffff88800cb6ef80 R15: ffffea000032db80
delete_object_full+0x46/0x70
kfree+0x31a/0x550
simple_xattrs_free+0x10e/0x180
shmem_evict_inode+0x186/0xa20
evict+0x368/0x860
iput.part.0+0x541/0x770
iput+0x62/0x80
do_unlinkat+0x4fb/0x670
__x64_sys_unlink+0xc7/0x110
do_syscall_64+0xbf/0x360
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f66de0fcb57
Code: f0 ff ff 73 01 c3 48 8b 0d 36 d3 0c 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 b8 57 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 09 d3 0c 00 f7 d8 64 89 01 48
RSP: 002b:00007ffddde214f8 EFLAGS: 00000246 ORIG_RAX: 0000000000000057
RAX: ffffffffffffffda RBX: 000055703593b2c0 RCX: 00007f66de0fcb57
RDX: 00007ffddde21400 RSI: 000055703593c5a0 RDI: 0000557035975510
RBP: 00007ffddde21530 R08: 0000557035975510 R09: 0000000000000004
R10: 0000000000000010 R11: 0000000000000246 R12: 000055703593b2c0
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000001
irq event stamp: 5806714
hardirqs last enabled at (5806722): [] __up_console_sem+0x78/0x80
hardirqs last disabled at (5806731): [] __up_console_sem+0x5d/0x80
softirqs last enabled at (5805430): [] handle_softirqs+0x50c/0x770
softirqs last disabled at (5805939): [] __irq_exit_rcu+0xc4/0x100
---[ end trace 0000000000000000 ]---
percpu_ref_switch_to_atomic_rcu: percpu_ref_switch_to_atomic_rcu(): percpu_ref underflow slab kmalloc-64 start ffff88800c32c300 pointer offset 0 size 64
Bluetooth: hci1: command 0x0c1a tx timeout
Bluetooth: hci0: command 0x0c1a tx timeout
Bluetooth: hci2: command 0x0c1a tx timeout
Bluetooth: hci3: command 0x0c1a tx timeout
Bluetooth: hci4: command 0x0c1a tx timeout
Bluetooth: hci5: command 0x0c1a tx timeout
Bluetooth: hci6: command 0x0c1a tx timeout
Bluetooth: hci7: command 0x0c1a tx timeout
Bluetooth: hci0: command 0x0c1a tx timeout
Bluetooth: hci1: command 0x0c1a tx timeout
Bluetooth: hci2: command 0x0c1a tx timeout
Bluetooth: hci6: command 0x0c1a tx timeout
Bluetooth: hci4: command 0x0c1a tx timeout
Bluetooth: hci3: command 0x0c1a tx timeout
Bluetooth: hci5: command 0x0c1a tx timeout
Bluetooth: hci7: command 0x0c1a tx timeout
----------------
Code disassembly (best guess), 1 bytes skipped:
0: 18 53 48 sbb %dl,0x48(%rbx)
3: 89 f3 mov %esi,%ebx
5: 48 8b 74 24 10 mov 0x10(%rsp),%rsi
a: e8 16 f5 93 fc callq 0xfc93f525
f: 48 89 ef mov %rbp,%rdi
12: e8 4e 40 94 fc callq 0xfc944065
17: 80 e7 02 and $0x2,%bh
1a: 74 06 je 0x22
1c: e8 b4 48 be fc callq 0xfcbe48d5
21: fb sti
22: 65 ff 0d 6c 4c c6 02 decl %gs:0x2c64c6c(%rip) # 0x2c64c95
* 29: 74 07 je 0x32 <-- trapping instruction
2b: 5b pop %rbx
2c: 5d pop %rbp
2d: e9 33 23 00 00 jmpq 0x2365
32: 0f 1f 44 00 00 nopl 0x0(%rax,%rax,1)
37: 5b pop %rbx
38: 5d pop %rbp
39: e9 27 23 00 00 jmpq 0x2365
3e: 0f .byte 0xf