kernel_clone+0xea/0x7f0
__do_sys_clone+0xce/0x120
do_syscall_64+0xbf/0x360
entry_SYSCALL_64_after_hwframe+0x77/0x7f
------------[ cut here ]------------
WARNING: fs/namespace.c:1434 at mntput_no_expire+0x78e/0xbe0, CPU#1: syz-executor.6/287
Modules linked in:
CPU: 1 UID: 0 PID: 287 Comm: syz-executor.6 Tainted: G W 6.17.0-rc4-next-20250901 #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 d6 30 81 04 01 e8 71 df 91 ff e9 41 fc ff ff e8 27 47 b4 ff 31 ff 44 89 ee e8 4d 42 b4 ff 45 85 ed 79 09 e8 13 47 b4 ff 90 <0f> 0b 90 e8 0a 47 b4 ff e8 b5 2d fc 02 31 ff 89 c5 89 c6 e8 2a 42
RSP: 0018:ffff888016c97c00 EFLAGS: 00010293
RAX: 0000000000000000 RBX: 1ffff11002d92f85 RCX: ffffffff81bfaf93
RDX: ffff888016165280 RSI: ffffffff81bfaf9d RDI: 0000000000000005
RBP: ffff88801ebc16c0 R08: 0000000000000001 R09: 0000000000000000
R10: 00000000ffffffff R11: 0000000000000001 R12: ffff888016c97c68
R13: 00000000ffffffff R14: dead000000000100 R15: ffff88801ebc16c0
FS: 00005555645fb400(0000) GS:ffff8880e56d8000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fbf4f8d33a4 CR3: 0000000044bdc000 CR4: 0000000000350ef0
Call Trace:
namespace_unlock+0x7f1/0x810
path_umount+0x6a4/0x1100
__x64_sys_umount+0x15c/0x190
do_syscall_64+0xbf/0x360
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fd1444d0f87
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:00007ffc23847e18 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
RAX: ffffffffffffffda RBX: 0000000000000007 RCX: 00007fd1444d0f87
RDX: 00007ffc23847ee9 RSI: 000000000000000a RDI: 00007ffc23847ee0
RBP: 00007ffc23847ee0 R08: 00000000ffffffff R09: 00007ffc23847cb0
R10: 00005555645fcc7b R11: 0000000000000246 R12: 00007fd144529105
R13: 00007ffc23848fa0 R14: 00005555645fcc20 R15: 00007ffc23848fe0
irq event stamp: 150565
hardirqs last enabled at (150573): [] __up_console_sem+0x78/0x80
hardirqs last disabled at (150582): [] __up_console_sem+0x5d/0x80
softirqs last enabled at (150202): [] handle_softirqs+0x50c/0x770
softirqs last disabled at (150179): [] __irq_exit_rcu+0xc4/0x100
---[ end trace 0000000000000000 ]---
------------[ cut here ]------------
WARNING: fs/namespace.c:1434 at mntput_no_expire+0x78e/0xbe0, CPU#1: syz-executor.6/287
Modules linked in:
CPU: 1 UID: 0 PID: 287 Comm: syz-executor.6 Tainted: G W 6.17.0-rc4-next-20250901 #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 d6 30 81 04 01 e8 71 df 91 ff e9 41 fc ff ff e8 27 47 b4 ff 31 ff 44 89 ee e8 4d 42 b4 ff 45 85 ed 79 09 e8 13 47 b4 ff 90 <0f> 0b 90 e8 0a 47 b4 ff e8 b5 2d fc 02 31 ff 89 c5 89 c6 e8 2a 42
RSP: 0018:ffff888016c97ce0 EFLAGS: 00010293
RAX: 0000000000000000 RBX: 1ffff11002d92fa1 RCX: ffffffff81bfaf93
RDX: ffff888016165280 RSI: ffffffff81bfaf9d RDI: 0000000000000005
RBP: ffff88801ebc16c0 R08: 0000000000000001 R09: 0000000000000000
R10: 00000000fffffffe R11: 0000000000000001 R12: ffff888016c97d48
R13: 00000000fffffffe R14: ffff88801ebc16c0 R15: ffff88801ebc17a8
FS: 00005555645fb400(0000) GS:ffff8880e56d8000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fc7f8a45750 CR3: 0000000044bdc000 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: 0033:0x7fd1444d0f87
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:00007ffc23847e18 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
RAX: ffffffffffffffda RBX: 0000000000000007 RCX: 00007fd1444d0f87
RDX: 00007ffc23847ee9 RSI: 000000000000000a RDI: 00007ffc23847ee0
RBP: 00007ffc23847ee0 R08: 00000000ffffffff R09: 00007ffc23847cb0
R10: 00005555645fcc7b R11: 0000000000000246 R12: 00007fd144529105
R13: 00007ffc23848fa0 R14: 00005555645fcc20 R15: 00007ffc23848fe0
irq event stamp: 151085
hardirqs last enabled at (151093): [] __up_console_sem+0x78/0x80
hardirqs last disabled at (151102): [] __up_console_sem+0x5d/0x80
softirqs last enabled at (151074): [] handle_softirqs+0x50c/0x770
softirqs last disabled at (151061): [] __irq_exit_rcu+0xc4/0x100
---[ end trace 0000000000000000 ]---
Oops: general protection fault, probably for non-canonical address 0xdffffc0000000032: 0000 [#1] SMP KASAN NOPTI
KASAN: null-ptr-deref in range [0x0000000000000190-0x0000000000000197]
CPU: 0 UID: 0 PID: 3962 Comm: syz-executor.7 Tainted: G W 6.17.0-rc4-next-20250901 #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:ffff888046967780 EFLAGS: 00010012
RAX: 0000000000000032 RBX: ffffffffffffffa1 RCX: ffffc9000764c000
RDX: 0000000000040000 RSI: ffffffff8189a4e7 RDI: 0000000000000191
RBP: ffff8880469679f0 R08: ffff88806ce31340 R09: ffffe8ffffc166a0
R10: 0000000000000000 R11: 0000000000000001 R12: dffffc0000000000
R13: 0000000000000014 R14: ffff88806ce31340 R15: dffffc0000000000
FS: 00007eff45a95700(0000) GS:ffff8880e55d8000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007eff48633018 CR3: 000000001dac3000 CR4: 0000000000350ef0
Call Trace:
perf_trace_run_bpf_submit+0xef/0x180
perf_trace_preemptirq_template+0x259/0x430
trace_irq_enable.constprop.0+0xa6/0x100
trace_hardirqs_on+0x26/0x40
_raw_spin_unlock_irqrestore+0x2c/0x50
try_to_wake_up+0x8ae/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: 0033:0x7eff4851fb19
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:00007eff45a95218 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: ffffffffffffffda RBX: 00007eff48632f68 RCX: 00007eff4851fb19
RDX: 00000000000f4240 RSI: 0000000000000081 RDI: 00007eff48632f6c
RBP: 00007eff48632f60 R08: 000000000000000e R09: 0000000000000000
R10: 0000000000000136 R11: 0000000000000246 R12: 00007eff48632f6c
R13: 00007ffedca4d78f R14: 00007eff45a95300 R15: 0000000000022000
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:ffff888046967780 EFLAGS: 00010012
RAX: 0000000000000032 RBX: ffffffffffffffa1 RCX: ffffc9000764c000
RDX: 0000000000040000 RSI: ffffffff8189a4e7 RDI: 0000000000000191
RBP: ffff8880469679f0 R08: ffff88806ce31340 R09: ffffe8ffffc166a0
R10: 0000000000000000 R11: 0000000000000001 R12: dffffc0000000000
R13: 0000000000000014 R14: ffff88806ce31340 R15: dffffc0000000000
FS: 00007eff45a95700(0000) GS:ffff8880e55d8000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007eff48633018 CR3: 000000001dac3000 CR4: 0000000000350ef0
note: syz-executor.7[3962] exited with irqs disabled
Oops: general protection fault, probably for non-canonical address 0xdffffc0000000032: 0000 [#2] SMP KASAN NOPTI
KASAN: null-ptr-deref in range [0x0000000000000190-0x0000000000000197]
CPU: 0 UID: 0 PID: 3962 Comm: syz-executor.7 Tainted: G D W 6.17.0-rc4-next-20250901 #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:ffff88806ce08b80 EFLAGS: 00010012
RAX: 0000000000000032 RBX: ffffffffffffffa1 RCX: 0000000000000002
RDX: ffff888045619b80 RSI: ffffffff8189a4e7 RDI: 0000000000000191
RBP: ffff88806ce08df0 R08: ffff88806ce313e8 R09: ffffe8ffffc166a0
R10: 0000000000000000 R11: ffff88800b4a8098 R12: dffffc0000000000
R13: 0000000000000014 R14: ffff88806ce313e8 R15: dffffc0000000000
FS: 00007eff45a95700(0000) GS:ffff8880e55d8000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007eff48633018 CR3: 000000001dac3000 CR4: 0000000000350ef0
Call Trace:
perf_trace_run_bpf_submit+0xef/0x180
perf_trace_preemptirq_template+0x259/0x430
trace_irq_enable.constprop.0+0xa6/0x100
trace_hardirqs_on+0x26/0x40
handle_softirqs+0x16e/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:make_task_dead+0xa2/0x3b0
Code: 38 00 85 db 0f 84 21 01 00 00 e8 09 a6 38 00 9c 5b 81 e3 00 02 00 00 31 ff 48 89 de e8 57 a1 38 00 48 85 db 0f 84 17 01 00 00 e9 a5 38 00 31 ff 65 8b 1d 60 2f 49 06 81 e3 ff ff ff 7f 89 de
RSP: 0018:ffff888046967f28 EFLAGS: 00000246
RAX: 0000000000000001 RBX: ffff888045619b80 RCX: ffffffff817c3ab6
RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffffffff813b5234
RBP: 000000000000000b R08: 0000000000000000 R09: 0000000000000000
R10: ffffffff8643b457 R11: 0000000000000001 R12: ffff888045619b80
R13: 0000000000000000 R14: dffffc0000000032 R15: 0000000000000000
rewind_stack_and_make_dead+0x16/0x20
RIP: 0033:0x7eff4851fb19
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:00007eff45a95218 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: ffffffffffffffda RBX: 00007eff48632f68 RCX: 00007eff4851fb19
RDX: 00000000000f4240 RSI: 0000000000000081 RDI: 00007eff48632f6c
RBP: 00007eff48632f60 R08: 000000000000000e R09: 0000000000000000
R10: 0000000000000136 R11: 0000000000000246 R12: 00007eff48632f6c
R13: 00007ffedca4d78f R14: 00007eff45a95300 R15: 0000000000022000
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:ffff888046967780 EFLAGS: 00010012
RAX: 0000000000000032 RBX: ffffffffffffffa1 RCX: ffffc9000764c000
RDX: 0000000000040000 RSI: ffffffff8189a4e7 RDI: 0000000000000191
RBP: ffff8880469679f0 R08: ffff88806ce31340 R09: ffffe8ffffc166a0
R10: 0000000000000000 R11: 0000000000000001 R12: dffffc0000000000
R13: 0000000000000014 R14: ffff88806ce31340 R15: dffffc0000000000
FS: 00007eff45a95700(0000) GS:ffff8880e55d8000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007eff48633018 CR3: 000000001dac3000 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