Oops: general protection fault, probably for non-canonical address 0xdffffc000000014b: 0000 [#1] SMP KASAN PTI
KASAN: null-ptr-deref in range [0x0000000000000a58-0x0000000000000a5f]
CPU: 1 UID: 0 PID: 6293 Comm: syz.0.60 Not tainted syzkaller #0 PREEMPT_{RT,(full)}
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025
RIP: 0010:kasan_byte_accessible+0x12/0x30 mm/kasan/generic.c:199
Code: 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 66 0f 1f 00 48 c1 ef 03 48 b8 00 00 00 00 00 fc ff df <0f> b6 04 07 3c 08 0f 92 c0 e9 d0 9f dc 08 cc 66 66 66 66 66 66 2e
RSP: 0018:ffffc9000157f7e0 EFLAGS: 00010006
RAX: dffffc0000000000 RBX: ffffffff8af9dfe7 RCX: e1dbfc1ee2ae4a00
RDX: 0000000000000000 RSI: ffffffff8af9dfe7 RDI: 000000000000014b
RBP: ffffffff81908477 R08: 0000000000000001 R09: 0000000000000000
R10: dffffc0000000000 R11: fffffbfff1e3a947 R12: 0000000000000000
R13: 0000000000000a58 R14: 0000000000000a58 R15: 0000000000000001
FS: 00007ff6ed61d6c0(0000) GS:ffff8881269c2000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ff6ed61cf40 CR3: 0000000027554000 CR4: 00000000003526f0
Call Trace:
<TASK>
__kasan_check_byte+0x12/0x40 mm/kasan/common.c:567
kasan_check_byte include/linux/kasan.h:399 [inline]
lock_acquire+0x8d/0x360 kernel/locking/lockdep.c:5842
__raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline]
_raw_spin_lock_irqsave+0xa7/0xf0 kernel/locking/spinlock.c:162
class_raw_spinlock_irqsave_constructor include/linux/spinlock.h:557 [inline]
try_to_wake_up+0x67/0x12b0 kernel/sched/core.c:4216
requeue_pi_wake_futex+0x24b/0x2f0 kernel/futex/requeue.c:249
futex_proxy_trylock_atomic kernel/futex/requeue.c:340 [inline]
futex_requeue+0x135f/0x1870 kernel/futex/requeue.c:498
do_futex+0x362/0x420 kernel/futex/syscalls.c:-1
__do_sys_futex kernel/futex/syscalls.c:179 [inline]
__se_sys_futex+0x36f/0x400 kernel/futex/syscalls.c:160
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0xfa/0x3b0 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7ff6edfcebe9
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 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ff6ed61d038 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: ffffffffffffffda RBX: 00007ff6ee206090 RCX: 00007ff6edfcebe9
RDX: 0000000000000001 RSI: 000000000000000c RDI: 000020000000cffc
RBP: 00007ff6ee051e19 R08: 0000200000048000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ff6ee206128 R14: 00007ff6ee206090 R15: 00007ffd53c7a368
</TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:kasan_byte_accessible+0x12/0x30 mm/kasan/generic.c:199
Code: 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 66 0f 1f 00 48 c1 ef 03 48 b8 00 00 00 00 00 fc ff df <0f> b6 04 07 3c 08 0f 92 c0 e9 d0 9f dc 08 cc 66 66 66 66 66 66 2e
RSP: 0018:ffffc9000157f7e0 EFLAGS: 00010006
RAX: dffffc0000000000 RBX: ffffffff8af9dfe7 RCX: e1dbfc1ee2ae4a00
RDX: 0000000000000000 RSI: ffffffff8af9dfe7 RDI: 000000000000014b
RBP: ffffffff81908477 R08: 0000000000000001 R09: 0000000000000000
R10: dffffc0000000000 R11: fffffbfff1e3a947 R12: 0000000000000000
R13: 0000000000000a58 R14: 0000000000000a58 R15: 0000000000000001
FS: 00007ff6ed61d6c0(0000) GS:ffff8881269c2000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ff6ed61cf40 CR3: 0000000027554000 CR4: 00000000003526f0
----------------
Code disassembly (best guess):
0: 0f 1f 84 00 00 00 00 nopl 0x0(%rax,%rax,1)
7: 00
8: 90 nop
9: 90 nop
a: 90 nop
b: 90 nop
c: 90 nop
d: 90 nop
e: 90 nop
f: 90 nop
10: 90 nop
11: 90 nop
12: 90 nop
13: 90 nop
14: 90 nop
15: 90 nop
16: 90 nop
17: 90 nop
18: 66 0f 1f 00 nopw (%rax)
1c: 48 c1 ef 03 shr $0x3,%rdi
20: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax
27: fc ff df
* 2a: 0f b6 04 07 movzbl (%rdi,%rax,1),%eax <-- trapping instruction
2e: 3c 08 cmp $0x8,%al
30: 0f 92 c0 setb %al
33: e9 d0 9f dc 08 jmp 0x8dca008
38: cc int3
39: 66 data16
3a: 66 data16
3b: 66 data16
3c: 66 data16
3d: 66 data16
3e: 66 data16
3f: 2e cs