------------[ cut here ]------------
WARNING: fs/namespace.c:1375 at cleanup_mnt+0x33f/0x430, CPU#0: syz-executor.2/283
Modules linked in:
CPU: 0 UID: 0 PID: 283 Comm: syz-executor.2 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:ffff888015417e20 EFLAGS: 00010293
RAX: 0000000000000000 RBX: 0000000000000002 RCX: ffffffff81bf9de5
RDX: ffff88800f8d0000 RSI: ffffffff81bfa0fe RDI: 0000000000000005
RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000001
R10: 0000000000000002 R11: 0000000000000001 R12: ffff88800f8d08d8
R13: ffff88800f80f180 R14: 0000000000000001 R15: ffff88800f80f1c0
FS:  000055556c32e400(0000) GS:ffff8880e55dd000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007effad4bf8a0 CR3: 000000003f524000 CR4: 0000000000350ef0
Call Trace:
 <TASK>
 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: 0033:0x7f694fbfbf87
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:00007ffcdb1f4548 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
RAX: 0000000000000000 RBX: 000000000000000c RCX: 00007f694fbfbf87
RDX: 00007ffcdb1f4619 RSI: 000000000000000a RDI: 00007ffcdb1f4610
RBP: 00007ffcdb1f4610 R08: 00000000ffffffff R09: 00007ffcdb1f43e0
R10: 000055556c32fc7b R11: 0000000000000246 R12: 00007f694fc54105
R13: 00007ffcdb1f56d0 R14: 000055556c32fc20 R15: 00007ffcdb1f5710
 </TASK>
irq event stamp: 161949
hardirqs last  enabled at (161957): [<ffffffff81541b18>] __up_console_sem+0x78/0x80
hardirqs last disabled at (161966): [<ffffffff81541afd>] __up_console_sem+0x5d/0x80
softirqs last  enabled at (161832): [<ffffffff813bafcc>] handle_softirqs+0x50c/0x770
softirqs last disabled at (161825): [<ffffffff813bb364>] __irq_exit_rcu+0xc4/0x100
---[ end trace 0000000000000000 ]---
nfs: Unknown parameter 'fowner<00000000000000000000'
EXT4-fs warning (device sda): verify_group_input:136: Cannot add at group 32768 (only 16 groups)
Oops: general protection fault, probably for non-canonical address 0xdffffc0020000032: 0000 [#1] SMP KASAN NOPTI
KASAN: probably user-memory-access in range [0x0000000100000190-0x0000000100000197]
CPU: 1 UID: 0 PID: 4000 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:perf_tp_event+0x175/0xe70
Code: ff df 48 89 85 a8 fd ff ff 48 c1 e8 03 4c 01 e0 48 89 85 c8 fd ff ff e8 c9 51 ea ff 48 8d bb f0 01 00 00 48 89 f8 48 c1 e8 03 <42> 0f b6 04 20 84 c0 74 08 3c 03 0f 8e c5 0b 00 00 44 8b ab f0 01
RSP: 0018:ffff888015767780 EFLAGS: 00010012
RAX: 0000000020000032 RBX: 00000000ffffffa0 RCX: 0000000000000002
RDX: ffff8880172d0000 RSI: ffffffff818995b7 RDI: 0000000100000190
RBP: ffff8880157679f0 R08: ffff88806cf31340 R09: ffffe8ffffd15f40
R10: 0000000000000000 R11: 0000000000000001 R12: dffffc0000000000
R13: 0000000000000014 R14: ffff88806cf31340 R15: dffffc0000000000
FS:  000055559341f400(0000) GS:ffff8880e56dd000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007effad603018 CR3: 000000001ef5e000 CR4: 0000000000350ef0
Call Trace:
 <TASK>
 perf_trace_run_bpf_submit+0xef/0x180
 perf_trace_preemptirq_template+0x259/0x430
 trace_irq_disable.constprop.0+0xa6/0x100
 _raw_spin_lock_irqsave+0x53/0x60
 try_to_wake_up+0xa0/0x11d0
 wake_up_q+0xa1/0x130
 futex_wake+0x47e/0x540
 do_futex+0x26d/0x370
 __x64_sys_futex+0x1c9/0x4d0
 do_syscall_64+0xbf/0x360
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f0e1a124b19
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:00007fff6afe2d28 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f0e1a124b19
RDX: 00000000000f4240 RSI: 0000000000000081 RDI: 00007f0e1a237f68
RBP: 00007f0e1a237f60 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f0e1a23c680
R13: 00007fff6afe2e30 R14: 00007f0e1a237f60 R15: 0000000000024f75
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:perf_tp_event+0x175/0xe70
Code: ff df 48 89 85 a8 fd ff ff 48 c1 e8 03 4c 01 e0 48 89 85 c8 fd ff ff e8 c9 51 ea ff 48 8d bb f0 01 00 00 48 89 f8 48 c1 e8 03 <42> 0f b6 04 20 84 c0 74 08 3c 03 0f 8e c5 0b 00 00 44 8b ab f0 01
RSP: 0018:ffff888015767780 EFLAGS: 00010012
RAX: 0000000020000032 RBX: 00000000ffffffa0 RCX: 0000000000000002
RDX: ffff8880172d0000 RSI: ffffffff818995b7 RDI: 0000000100000190
RBP: ffff8880157679f0 R08: ffff88806cf31340 R09: ffffe8ffffd15f40
R10: 0000000000000000 R11: 0000000000000001 R12: dffffc0000000000
R13: 0000000000000014 R14: ffff88806cf31340 R15: dffffc0000000000
FS:  000055559341f400(0000) GS:ffff8880e56dd000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007effad603018 CR3: 000000001ef5e000 CR4: 0000000000350ef0
note: syz-executor.1[4000] exited with irqs disabled
Oops: general protection fault, probably for non-canonical address 0xdffffc0020000032: 0000 [#2] SMP KASAN NOPTI
KASAN: probably user-memory-access in range [0x0000000100000190-0x0000000100000197]
CPU: 1 UID: 0 PID: 4000 Comm: syz-executor.1 Tainted: G      D W           6.17.0-rc3-next-20250829 #1 PREEMPT(voluntary) 
Tainted: [D]=DIE, [W]=WARN
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014
RIP: 0010:perf_tp_event+0x175/0xe70
Code: ff df 48 89 85 a8 fd ff ff 48 c1 e8 03 4c 01 e0 48 89 85 c8 fd ff ff e8 c9 51 ea ff 48 8d bb f0 01 00 00 48 89 f8 48 c1 e8 03 <42> 0f b6 04 20 84 c0 74 08 3c 03 0f 8e c5 0b 00 00 44 8b ab f0 01
RSP: 0018:ffff88806cf08ac0 EFLAGS: 00010012
RAX: 0000000020000032 RBX: 00000000ffffffa0 RCX: 0000000000000002
RDX: ffff8880172d0000 RSI: ffffffff818995b7 RDI: 0000000100000190
RBP: ffff88806cf08d30 R08: ffff88806cf313e8 R09: ffffe8ffffd15f40
R10: 0000000000000000 R11: 0000000000000000 R12: dffffc0000000000
R13: 0000000000000014 R14: ffff88806cf313e8 R15: dffffc0000000000
FS:  000055559341f400(0000) GS:ffff8880e56dd000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007effad603018 CR3: 000000001ef5e000 CR4: 0000000000350ef0
Call Trace:
 <IRQ>
 perf_trace_run_bpf_submit+0xef/0x180
 perf_trace_preemptirq_template+0x259/0x430
 trace_irq_disable.constprop.0+0xa6/0x100
 irqentry_enter+0x2a/0x60
 sysvec_call_function_single+0x18/0xc0
 asm_sysvec_call_function_single+0x1a/0x20
RIP: 0010:handle_softirqs+0x174/0x770
Code: c8 83 83 3c 0a 00 00 01 c7 44 24 20 0a 00 00 00 48 89 44 24 18 65 66 c7 05 0f 84 48 06 00 00 e8 42 80 40 00 fb bb ff ff ff ff <48> c7 c5 c0 c0 a0 85 41 0f bc de 83 c3 01 0f 85 9b 00 00 00 e9 8d
RSP: 0018:ffff88806cf08f78 EFLAGS: 00000246
RAX: 0000000000000001 RBX: 00000000ffffffff RCX: ffffffff817c2b86
RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffffffff813bac2e
RBP: ffff888015767e78 R08: 0000000000000000 R09: 0000000000000000
R10: ffffffff8643ac57 R11: ffff888015db5498 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000382 R15: 0000000000000000
 __irq_exit_rcu+0xc4/0x100
 irq_exit_rcu+0x9/0x20
 sysvec_apic_timer_interrupt+0x70/0x80
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20
RIP: 0010:make_task_dead+0xa2/0x3b0
Code: 38 00 85 db 0f 84 21 01 00 00 e8 d9 96 38 00 9c 5b 81 e3 00 02 00 00 31 ff 48 89 de e8 27 92 38 00 48 85 db 0f 84 17 01 00 00 <e8> b9 96 38 00 31 ff 65 8b 1d 60 df 48 06 81 e3 ff ff ff 7f 89 de
RSP: 0018:ffff888015767f28 EFLAGS: 00000246
RAX: 0000000000000001 RBX: ffff8880172d0000 RCX: ffffffff817c2b86
RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffffffff813b5234
RBP: 000000000000000b R08: 0000000000000000 R09: 0000000000000000
R10: ffffffff8643ac57 R11: 0000000000000001 R12: ffff8880172d0000
R13: 0000000000000000 R14: dffffc0020000032 R15: 0000000000000000
 rewind_stack_and_make_dead+0x16/0x20
RIP: 0033:0x7f0e1a124b19
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:00007fff6afe2d28 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f0e1a124b19
RDX: 00000000000f4240 RSI: 0000000000000081 RDI: 00007f0e1a237f68
RBP: 00007f0e1a237f60 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f0e1a23c680
R13: 00007fff6afe2e30 R14: 00007f0e1a237f60 R15: 0000000000024f75
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:perf_tp_event+0x175/0xe70
Code: ff df 48 89 85 a8 fd ff ff 48 c1 e8 03 4c 01 e0 48 89 85 c8 fd ff ff e8 c9 51 ea ff 48 8d bb f0 01 00 00 48 89 f8 48 c1 e8 03 <42> 0f b6 04 20 84 c0 74 08 3c 03 0f 8e c5 0b 00 00 44 8b ab f0 01
RSP: 0018:ffff888015767780 EFLAGS: 00010012
RAX: 0000000020000032 RBX: 00000000ffffffa0 RCX: 0000000000000002
RDX: ffff8880172d0000 RSI: ffffffff818995b7 RDI: 0000000100000190
RBP: ffff8880157679f0 R08: ffff88806cf31340 R09: ffffe8ffffd15f40
R10: 0000000000000000 R11: 0000000000000001 R12: dffffc0000000000
R13: 0000000000000014 R14: ffff88806cf31340 R15: dffffc0000000000
FS:  000055559341f400(0000) GS:ffff8880e56dd000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007effad603018 CR3: 000000001ef5e000 CR4: 0000000000350ef0
----------------
Code disassembly (best guess), 1 bytes skipped:
   0:	df 48 89             	fisttps -0x77(%rax)
   3:	85 a8 fd ff ff 48    	test   %ebp,0x48fffffd(%rax)
   9:	c1 e8 03             	shr    $0x3,%eax
   c:	4c 01 e0             	add    %r12,%rax
   f:	48 89 85 c8 fd ff ff 	mov    %rax,-0x238(%rbp)
  16:	e8 c9 51 ea ff       	callq  0xffea51e4
  1b:	48 8d bb f0 01 00 00 	lea    0x1f0(%rbx),%rdi
  22:	48 89 f8             	mov    %rdi,%rax
  25:	48 c1 e8 03          	shr    $0x3,%rax
* 29:	42 0f b6 04 20       	movzbl (%rax,%r12,1),%eax <-- trapping instruction
  2e:	84 c0                	test   %al,%al
  30:	74 08                	je     0x3a
  32:	3c 03                	cmp    $0x3,%al
  34:	0f 8e c5 0b 00 00    	jle    0xbff
  3a:	44                   	rex.R
  3b:	8b                   	.byte 0x8b
  3c:	ab                   	stos   %eax,%es:(%rdi)
  3d:	f0                   	lock
  3e:	01                   	.byte 0x1