------------[ cut here ]------------
WARNING: fs/namespace.c:1434 at mntput_no_expire+0x78e/0xbe0, CPU#0: syz-executor.4/289
Modules linked in:
CPU: 0 UID: 0 PID: 289 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:ffff88801744fce0 EFLAGS: 00010293
RAX: 0000000000000000 RBX: 1ffff11002e89fa1 RCX: ffffffff81bf96d3
RDX: ffff88801b451b80 RSI: ffffffff81bf96dd RDI: 0000000000000005
RBP: ffff888016bd0c40 R08: 0000000000000001 R09: 0000000000000000
R10: 00000000ffffffff R11: 0000000000000001 R12: ffff88801744fd48
R13: 00000000ffffffff R14: ffff888016bd0c40 R15: ffff888016bd0d28
FS: 000055558f0af400(0000) GS:ffff8880e55dd000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffe024cbf28 CR3: 000000003f03c000 CR4: 0000000000350ef0
Call Trace:
path_umount+0x6e0/0x1100
__x64_sys_umount+0x15c/0x190
do_syscall_64+0xbf/0x360
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f07178abf87
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:00007ffe024cc668 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
RAX: ffffffffffffffda RBX: 0000000000000017 RCX: 00007f07178abf87
RDX: 00007ffe024cc73a RSI: 000000000000000a RDI: 00007ffe024cc730
RBP: 00007ffe024cc730 R08: 00000000ffffffff R09: 00007ffe024cc500
R10: 000055558f0b0c7b R11: 0000000000000246 R12: 00007f0717904105
R13: 00007ffe024cd7f0 R14: 000055558f0b0c20 R15: 00007ffe024cd830
irq event stamp: 191125
hardirqs last enabled at (191135): [] __up_console_sem+0x78/0x80
hardirqs last disabled at (191142): [] __up_console_sem+0x5d/0x80
softirqs last enabled at (190958): [] handle_softirqs+0x50c/0x770
softirqs last disabled at (190947): [] __irq_exit_rcu+0xc4/0x100
---[ end trace 0000000000000000 ]---
No source specified
No source specified
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: 4132 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: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:ffff888043f47780 EFLAGS: 00010012
RAX: 0000000020000032 RBX: 00000000ffffffa0 RCX: 0000000000000002
RDX: ffff88800a010000 RSI: ffffffff818995b7 RDI: 0000000100000190
RBP: ffff888043f479f0 R08: ffff88806ce31340 R09: ffffe8ffffc10b80
R10: 0000000000000000 R11: 0000000000000001 R12: dffffc0000000000
R13: 0000000000000014 R14: ffff88806ce31340 R15: dffffc0000000000
FS: 000055557051d400(0000) GS:ffff8880e55dd000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fa75b5f8018 CR3: 000000001f901000 CR4: 0000000000350ef0
Call Trace:
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: 0033:0x7f0a37792b19
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:00007ffcc0f42508 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f0a37792b19
RDX: 00000000000f4240 RSI: 0000000000000081 RDI: 00007f0a378a5f68
RBP: 00007f0a378a5f60 R08: 00007f0a378a20c0 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f0a378aa200
R13: 00007ffcc0f42610 R14: 00007f0a378a5f60 R15: 0000000000019a19
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:ffff888043f47780 EFLAGS: 00010012
RAX: 0000000020000032 RBX: 00000000ffffffa0 RCX: 0000000000000002
RDX: ffff88800a010000 RSI: ffffffff818995b7 RDI: 0000000100000190
RBP: ffff888043f479f0 R08: ffff88806ce31340 R09: ffffe8ffffc10b80
R10: 0000000000000000 R11: 0000000000000001 R12: dffffc0000000000
R13: 0000000000000014 R14: ffff88806ce31340 R15: dffffc0000000000
FS: 000055557051d400(0000) GS:ffff8880e55dd000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fa75b5f8018 CR3: 000000001f901000 CR4: 0000000000350ef0
note: syz-executor.2[4132] 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: 0 UID: 0 PID: 4132 Comm: syz-executor.2 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:ffff88806ce08ac0 EFLAGS: 00010012
RAX: 0000000020000032 RBX: 00000000ffffffa0 RCX: 0000000000000002
RDX: ffff88800a010000 RSI: ffffffff818995b7 RDI: 0000000100000190
RBP: ffff88806ce08d30 R08: ffff88806ce313e8 R09: ffffe8ffffc10b80
R10: 0000000000000000 R11: 0000000000000000 R12: dffffc0000000000
R13: 0000000000000014 R14: ffff88806ce313e8 R15: dffffc0000000000
FS: 000055557051d400(0000) GS:ffff8880e55dd000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fa75b5f8018 CR3: 000000001f901000 CR4: 0000000000350ef0
Call Trace:
perf_trace_run_bpf_submit+0xef/0x180
perf_trace_preemptirq_template+0x259/0x430
trace_irq_disable.constprop.0+0xa6/0x100
irqentry_enter+0x2a/0x60
common_interrupt+0x1d/0xd0
asm_common_interrupt+0x26/0x40
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:ffff88806ce08f78 EFLAGS: 00000246
RAX: 0000000000000001 RBX: 00000000ffffffff RCX: ffffffff817c2b86
RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffffffff813bac2e
RBP: ffff888043f47e78 R08: 0000000000000000 R09: 0000000000000000
R10: ffffffff8643ac57 R11: ffff88801f255c98 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000282 R15: 0000000000000000
__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: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 b9 96 38 00 31 ff 65 8b 1d 60 df 48 06 81 e3 ff ff ff 7f 89 de
RSP: 0018:ffff888043f47f28 EFLAGS: 00000246
RAX: 0000000000000001 RBX: ffff88800a010000 RCX: ffffffff817c2b86
RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffffffff813b5234
RBP: 000000000000000b R08: 0000000000000000 R09: 0000000000000000
R10: ffffffff8643ac57 R11: 0000000000000001 R12: ffff88800a010000
R13: 0000000000000000 R14: dffffc0020000032 R15: 0000000000000000
rewind_stack_and_make_dead+0x16/0x20
RIP: 0033:0x7f0a37792b19
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:00007ffcc0f42508 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f0a37792b19
RDX: 00000000000f4240 RSI: 0000000000000081 RDI: 00007f0a378a5f68
RBP: 00007f0a378a5f60 R08: 00007f0a378a20c0 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f0a378aa200
R13: 00007ffcc0f42610 R14: 00007f0a378a5f60 R15: 0000000000019a19
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:ffff888043f47780 EFLAGS: 00010012
RAX: 0000000020000032 RBX: 00000000ffffffa0 RCX: 0000000000000002
RDX: ffff88800a010000 RSI: ffffffff818995b7 RDI: 0000000100000190
RBP: ffff888043f479f0 R08: ffff88806ce31340 R09: ffffe8ffffc10b80
R10: 0000000000000000 R11: 0000000000000001 R12: dffffc0000000000
R13: 0000000000000014 R14: ffff88806ce31340 R15: dffffc0000000000
FS: 000055557051d400(0000) GS:ffff8880e55dd000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fa75b5f8018 CR3: 000000001f901000 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