------------[ cut here ]------------
WARNING: CPU: 1 PID: 4452 at mm/maccess.c:226 copy_from_user_nofault+0x160/0x1c0 mm/maccess.c:226
Modules linked in:
CPU: 1 PID: 4452 Comm: syz.0.52 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026
RIP: 0010:copy_from_user_nofault+0x160/0x1c0 mm/maccess.c:226
Code: 24 45 31 f6 31 ff 89 de e8 5d 95 d8 ff 85 db 48 c7 c0 f2 ff ff ff 49 0f 44 c6 5b 41 5c 41 5d 41 5e 41 5f 5d c3 e8 e0 91 d8 ff <0f> 0b e9 1c ff ff ff 44 89 e1 80 e1 07 80 c1 03 38 c1 0f 8c ea fe
RSP: 0018:ffffc90000dd0918 EFLAGS: 00010006
RAX: ffffffff81a0b710 RBX: 0000000000000000 RCX: ffff888028dcd940
RDX: 0000000000010000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: ffff888028dcd947 R09: 1ffff110051b9b28
R10: dffffc0000000000 R11: ffffed10051b9b29 R12: ffff888028dcf0c8
R13: 00007ffffffff000 R14: ffffc90000dd0988 R15: 0000000020000000
FS: 00007fbb0e0e36c0(0000) GS:ffff8880b9100000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000110c32ab00 CR3: 000000002b645000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
bpf_probe_read_user_common kernel/trace/bpf_trace.c:157 [inline]
____bpf_probe_read_compat kernel/trace/bpf_trace.c:281 [inline]
bpf_probe_read_compat+0xdd/0x170 kernel/trace/bpf_trace.c:277
bpf_prog_24fd3d61f59b453e+0x3a/0xc20
bpf_dispatcher_nop_func include/linux/bpf.h:888 [inline]
__bpf_prog_run include/linux/filter.h:621 [inline]
bpf_prog_run include/linux/filter.h:635 [inline]
bpf_overflow_handler+0x3fd/0x4a0 kernel/events/core.c:10297
__perf_event_overflow+0x364/0x530 kernel/events/core.c:9515
perf_swevent_hrtimer+0x41b/0x5b0 kernel/events/core.c:10934
__run_hrtimer kernel/time/hrtimer.c:1685 [inline]
__hrtimer_run_queues+0x4b4/0xb70 kernel/time/hrtimer.c:1749
hrtimer_interrupt+0x3bb/0x8d0 kernel/time/hrtimer.c:1811
local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1097 [inline]
__sysvec_apic_timer_interrupt+0x137/0x4a0 arch/x86/kernel/apic/apic.c:1114
instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1108 [inline]
sysvec_apic_timer_interrupt+0x9b/0xc0 arch/x86/kernel/apic/apic.c:1108
asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:676
RIP: 0010:arch_atomic64_try_cmpxchg arch/x86/include/asm/atomic64_64.h:190 [inline]
RIP: 0010:arch_atomic_long_try_cmpxchg_release include/linux/atomic/atomic-long.h:449 [inline]
RIP: 0010:atomic_long_try_cmpxchg_release include/linux/atomic/atomic-instrumented.h:1677 [inline]
RIP: 0010:__mutex_unlock_slowpath+0x1be/0x6c0 kernel/locking/mutex.c:868
Code: 24 10 4c 89 ef be 08 00 00 00 e8 ed 7d f8 f7 4c 89 ff be 08 00 00 00 e8 e0 7d f8 f7 48 8b 84 24 80 00 00 00 f0 49 0f b1 5d 00 <0f> 84 8a 01 00 00 48 bb 00 00 00 00 00 fc ff df 4c 89 f2 4c 8b 2c
RSP: 0018:ffffc9000328fb20 EFLAGS: 00000246
RAX: ffff888028dcd940 RBX: 0000000000000000 RCX: ffffffff89c5e610
RDX: 0000000000000001 RSI: 0000000000000008 RDI: ffffc9000328fba0
RBP: ffffc9000328fc10 R08: ffffc9000328fba7 R09: 1ffff92000651f74
R10: dffffc0000000000 R11: fffff52000651f75 R12: 1ffff92000651f68
R13: ffff8880204a0048 R14: 1ffffffff1b14751 R15: ffffc9000328fba0
perf_event_ctx_unlock kernel/events/core.c:1413 [inline]
perf_ioctl+0x2076/0x2340 kernel/events/core.c:5957
vfs_ioctl fs/ioctl.c:51 [inline]
__do_sys_ioctl fs/ioctl.c:874 [inline]
__se_sys_ioctl+0xfa/0x170 fs/ioctl.c:860
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7fbb0fe89e59
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 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 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fbb0e0e3028 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007fbb10102fa0 RCX: 00007fbb0fe89e59
RDX: 0000000000000004 RSI: 0000000040042408 RDI: 0000000000000003
RBP: 00007fbb0ff1fd6f R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fbb10103038 R14: 00007fbb10102fa0 R15: 00007ffcbf5b8e58
----------------
Code disassembly (best guess):
0: 24 10 and $0x10,%al
2: 4c 89 ef mov %r13,%rdi
5: be 08 00 00 00 mov $0x8,%esi
a: e8 ed 7d f8 f7 call 0xf7f87dfc
f: 4c 89 ff mov %r15,%rdi
12: be 08 00 00 00 mov $0x8,%esi
17: e8 e0 7d f8 f7 call 0xf7f87dfc
1c: 48 8b 84 24 80 00 00 mov 0x80(%rsp),%rax
23: 00
24: f0 49 0f b1 5d 00 lock cmpxchg %rbx,0x0(%r13)
* 2a: 0f 84 8a 01 00 00 je 0x1ba <-- trapping instruction
30: 48 bb 00 00 00 00 00 movabs $0xdffffc0000000000,%rbx
37: fc ff df
3a: 4c 89 f2 mov %r14,%rdx
3d: 4c rex.WR
3e: 8b .byte 0x8b
3f: 2c .byte 0x2c