------------[ cut here ]------------
WARNING: fs/namespace.c:1434 at mntput_no_expire+0x78e/0xbe0, CPU#1: syz-executor.2/284
Modules linked in:
CPU: 1 UID: 0 PID: 284 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: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:ffff88801701fce0 EFLAGS: 00010293
RAX: 0000000000000000 RBX: 1ffff11002e03fa1 RCX: ffffffff81bf96d3
RDX: ffff88800f499b80 RSI: ffffffff81bf96dd RDI: 0000000000000005
RBP: ffff88802001ddc0 R08: 0000000000000001 R09: 0000000000000000
R10: 00000000ffffffff R11: 0000000000000001 R12: ffff88801701fd48
R13: 00000000ffffffff R14: ffff88802001ddc0 R15: ffff88802001dea8
FS:  000055558e06b400(0000) GS:ffff8880e56dd000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffcc63d1bd8 CR3: 00000000447cd000 CR4: 0000000000350ef0
Call Trace:
 <TASK>
 path_umount+0x6e0/0x1100
 __x64_sys_umount+0x15c/0x190
 do_syscall_64+0xbf/0x360
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f6088615f87
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:00007ffcc63d2318 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
RAX: ffffffffffffffda RBX: 0000000000000011 RCX: 00007f6088615f87
RDX: 00007ffcc63d23e9 RSI: 000000000000000a RDI: 00007ffcc63d23e0
RBP: 00007ffcc63d23e0 R08: 00000000ffffffff R09: 00007ffcc63d21b0
R10: 000055558e06cc7b R11: 0000000000000246 R12: 00007f608866e105
R13: 00007ffcc63d34a0 R14: 000055558e06cc20 R15: 00007ffcc63d34e0
 </TASK>
irq event stamp: 177843
hardirqs last  enabled at (177853): [<ffffffff81541b18>] __up_console_sem+0x78/0x80
hardirqs last disabled at (177860): [<ffffffff81541afd>] __up_console_sem+0x5d/0x80
softirqs last  enabled at (177676): [<ffffffff813bafcc>] handle_softirqs+0x50c/0x770
softirqs last disabled at (177879): [<ffffffff813bb364>] __irq_exit_rcu+0xc4/0x100
---[ end trace 0000000000000000 ]---
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: 0 UID: 0 PID: 4029 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: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:ffff8880474b7800 EFLAGS: 00010212
RAX: 0000000020000032 RBX: 00000000ffffffa0 RCX: ffffc90007e30000
RDX: 0000000000040000 RSI: ffffffff818995b7 RDI: 0000000100000190
RBP: ffff8880474b7a70 R08: ffff88806ce31340 R09: ffffe8ffffc17428
R10: 0000000000000000 R11: 0000000000000001 R12: dffffc0000000000
R13: 000000000000002c R14: ffff88806ce31340 R15: dffffc0000000000
FS:  00007f8c7dd99700(0000) GS:ffff8880e55dd000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f8c7dd99718 CR3: 000000000e922000 CR4: 0000000000350ef0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
 <TASK>
 perf_trace_run_bpf_submit+0xef/0x180
 perf_trace_lock+0x337/0x5d0
 lock_release+0x1ab/0x290
 futex_ref_get+0x119/0x300
 futex_hash+0x70/0x390
 futex_wake+0x143/0x540
 do_futex+0x26d/0x370
 __x64_sys_futex+0x1c9/0x4d0
 do_syscall_64+0xbf/0x360
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f8c80844b19
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:00007f8c7dd99218 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: ffffffffffffffda RBX: 00007f8c80958028 RCX: 00007f8c80844b19
RDX: 00000000000f4240 RSI: 0000000000000081 RDI: 00007f8c8095802c
RBP: 00007f8c80958020 R08: 0000000000000009 R09: 0000000000000000
R10: ffffffffffffffff R11: 0000000000000246 R12: 00007f8c8095802c
R13: 00007ffc9b97c6cf R14: 00007f8c7dd99300 R15: 0000000000022000
 </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:ffff8880474b7800 EFLAGS: 00010212
RAX: 0000000020000032 RBX: 00000000ffffffa0 RCX: ffffc90007e30000
RDX: 0000000000040000 RSI: ffffffff818995b7 RDI: 0000000100000190
RBP: ffff8880474b7a70 R08: ffff88806ce31340 R09: ffffe8ffffc17428
R10: 0000000000000000 R11: 0000000000000001 R12: dffffc0000000000
R13: 000000000000002c R14: ffff88806ce31340 R15: dffffc0000000000
FS:  00007f8c7dd99700(0000) GS:ffff8880e55dd000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f8c7dd99718 CR3: 000000000e922000 CR4: 0000000000350ef0
SELinux: security_context_str_to_sid (staff_u) failed with errno=-22
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
note: syz-executor.4[4029] exited with preempt_count 1
BUG: sleeping function called from invalid context at ./include/linux/percpu-rwsem.h:51
in_atomic(): 0, irqs_disabled(): 0, non_block: 0, pid: 4029, name: syz-executor.4
preempt_count: 0, expected: 0
RCU nest depth: 2, expected: 0
INFO: lockdep is turned off.
SELinux: security_context_str_to_sid (staff_u) failed with errno=-22
CPU: 0 UID: 0 PID: 4029 Comm: syz-executor.4 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
Call Trace:
 <TASK>
 dump_stack_lvl+0xfa/0x120
 __might_resched+0x2f3/0x510
 exit_signals+0x25/0x940
 do_exit+0x2db/0x2970
 make_task_dead+0x174/0x3b0
 rewind_stack_and_make_dead+0x16/0x20
RIP: 0033:0x7f8c80844b19
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:00007f8c7dd99218 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: ffffffffffffffda RBX: 00007f8c80958028 RCX: 00007f8c80844b19
RDX: 00000000000f4240 RSI: 0000000000000081 RDI: 00007f8c8095802c
RBP: 00007f8c80958020 R08: 0000000000000009 R09: 0000000000000000
R10: ffffffffffffffff R11: 0000000000000246 R12: 00007f8c8095802c
R13: 00007ffc9b97c6cf R14: 00007f8c7dd99300 R15: 0000000000022000
 </TASK>
SELinux: security_context_str_to_sid (staff_u) failed with errno=-22
tmpfs: Bad value for 'uid'
tmpfs: Bad value for 'uid'
tmpfs: Bad value for 'uid'
tmpfs: Bad value for 'uid'
SELinux: security_context_str_to_sid (staff_u) failed with errno=-22
SELinux: security_context_str_to_sid (staff_u) failed with errno=-22
netlink: 16 bytes leftover after parsing attributes in process `syz-executor.5'.
netlink: 16 bytes leftover after parsing attributes in process `syz-executor.5'.
netlink: 16 bytes leftover after parsing attributes in process `syz-executor.1'.
netlink: 16 bytes leftover after parsing attributes in process `syz-executor.1'.
netlink: 16 bytes leftover after parsing attributes in process `syz-executor.5'.
netlink: 16 bytes leftover after parsing attributes in process `syz-executor.1'.
netlink: 16 bytes leftover after parsing attributes in process `syz-executor.5'.
netlink: 16 bytes leftover after parsing attributes in process `syz-executor.0'.
netlink: 16 bytes leftover after parsing attributes in process `syz-executor.0'.
netlink: 16 bytes leftover after parsing attributes in process `syz-executor.5'.
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: 4175 Comm: syz-executor.4 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:ffff888048c8f800 EFLAGS: 00010212
RAX: 0000000020000032 RBX: 00000000ffffffa0 RCX: 0000000000000002
RDX: ffff8880489e3700 RSI: ffffffff818995b7 RDI: 0000000100000190
RBP: ffff888048c8fa70 R08: ffff88806cf31340 R09: ffffe8ffffd17428
R10: 0000000000000000 R11: 0000000000000000 R12: dffffc0000000000
R13: 000000000000002c R14: ffff88806cf31340 R15: dffffc0000000000
FS:  000055558b1e9400(0000) GS:ffff8880e56dd000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055558b1eac18 CR3: 0000000045d50000 CR4: 0000000000350ef0
Call Trace:
 <TASK>
 perf_trace_run_bpf_submit+0xef/0x180
 perf_trace_lock+0x337/0x5d0
 lock_release+0x1ab/0x290
 futex_ref_get+0x119/0x300
 futex_hash+0x70/0x390
 futex_wake+0x143/0x540
 do_futex+0x26d/0x370
 __x64_sys_futex+0x1c9/0x4d0
 do_syscall_64+0xbf/0x360
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f8c80844b19
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:00007ffc9b97c748 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f8c80844b19
RDX: 00000000000f4240 RSI: 0000000000000081 RDI: 00007f8c80957f68
RBP: 00007f8c80957f60 R08: 00007f8c7ddba700 R09: 0000000000000000
R10: 00007f8c7ddba700 R11: 0000000000000246 R12: 00007f8c8095ca68
R13: 00007ffc9b97c850 R14: 00007f8c80957f60 R15: 000000000001e1c7
 </TASK>
Modules linked in:
Oops: general protection fault, probably for non-canonical address 0xdffffc0020000032: 0000 [#3] SMP KASAN NOPTI
KASAN: probably user-memory-access in range [0x0000000100000190-0x0000000100000197]
CPU: 1 UID: 0 PID: 4175 Comm: syz-executor.4 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:ffff88806cf08a80 EFLAGS: 00010012
RAX: 0000000020000032 RBX: 00000000ffffffa0 RCX: 0000000000000002
RDX: ffff8880489e3700 RSI: ffffffff818995b7 RDI: 0000000100000190
RBP: ffff88806cf08cf0 R08: ffff88806cf31490 R09: ffffe8ffffd17428
R10: 0000000000000000 R11: ffff88806cf37018 R12: dffffc0000000000
R13: 0000000000000024 R14: ffff88806cf31490 R15: dffffc0000000000
FS:  000055558b1e9400(0000) GS:ffff8880e56dd000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055558b1eac18 CR3: 0000000045d50000 CR4: 0000000000350ef0
Call Trace:
 <IRQ>
 perf_trace_run_bpf_submit+0xef/0x180
 perf_trace_lock+0x337/0x5d0
 lock_release+0x1ab/0x290
 _raw_spin_unlock+0x16/0x40
 sched_ttwu_pending+0x2e0/0x4a0
 __flush_smp_call_function_queue+0x434/0x740
 __sysvec_call_function_single+0x6d/0x370
 sysvec_call_function_single+0xa1/0xc0
 </IRQ>
 <TASK>
 asm_sysvec_call_function_single+0x1a/0x20
RIP: 0010:oops_exit+0x0/0x50
Code: f1 39 00 be ff ff ff ff 48 c7 c7 50 ac 43 86 e8 c6 0f f9 ff 5b e9 20 f1 39 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 <66> 0f 1f 00 53 e8 06 f1 39 00 8b 1d c0 ed 4e 06 31 ff 89 de e8 27
RSP: 0018:ffff888048c8f690 EFLAGS: 00000202
RAX: 0000000000000000 RBX: 0000000000000293 RCX: ffffffff8139f06f
RDX: ffff8880489e3700 RSI: ffffffff812a3dca RDI: 0000000000000007
RBP: 000000000000000b R08: 0000000000000001 R09: fffffbfff0f11c90
R10: 0000000000000000 R11: 0000000000000001 R12: ffff888048c8f758
R13: 0000000000000000 R14: dffffc0020000032 R15: 0000000000000000
 oops_end+0x65/0xe0
 exc_general_protection+0x1a2/0x330
 asm_exc_general_protection+0x26/0x30
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:ffff888048c8f800 EFLAGS: 00010212
RAX: 0000000020000032 RBX: 00000000ffffffa0 RCX: 0000000000000002
RDX: ffff8880489e3700 RSI: ffffffff818995b7 RDI: 0000000100000190
RBP: ffff888048c8fa70 R08: ffff88806cf31340 R09: ffffe8ffffd17428
R10: 0000000000000000 R11: 0000000000000000 R12: dffffc0000000000
R13: 000000000000002c R14: ffff88806cf31340 R15: dffffc0000000000
 perf_trace_run_bpf_submit+0xef/0x180
 perf_trace_lock+0x337/0x5d0
 lock_release+0x1ab/0x290
 futex_ref_get+0x119/0x300
 futex_hash+0x70/0x390
 futex_wake+0x143/0x540
 do_futex+0x26d/0x370
 __x64_sys_futex+0x1c9/0x4d0
 do_syscall_64+0xbf/0x360
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f8c80844b19
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:00007ffc9b97c748 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f8c80844b19
RDX: 00000000000f4240 RSI: 0000000000000081 RDI: 00007f8c80957f68
RBP: 00007f8c80957f60 R08: 00007f8c7ddba700 R09: 0000000000000000
R10: 00007f8c7ddba700 R11: 0000000000000246 R12: 00007f8c8095ca68
R13: 00007ffc9b97c850 R14: 00007f8c80957f60 R15: 000000000001e1c7
 </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:ffff8880474b7800 EFLAGS: 00010212
RAX: 0000000020000032 RBX: 00000000ffffffa0 RCX: ffffc90007e30000
RDX: 0000000000040000 RSI: ffffffff818995b7 RDI: 0000000100000190
RBP: ffff8880474b7a70 R08: ffff88806ce31340 R09: ffffe8ffffc17428
R10: 0000000000000000 R11: 0000000000000001 R12: dffffc0000000000
R13: 000000000000002c R14: ffff88806ce31340 R15: dffffc0000000000
FS:  000055558b1e9400(0000) GS:ffff8880e56dd000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055558b1eac18 CR3: 0000000045d50000 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