------------[ cut here ]------------
WARNING: CPU: 1 PID: 29754 at mm/maccess.c:226 copy_from_user_nofault+0x160/0x1c0 mm/maccess.c:226
Modules linked in:
CPU: 1 PID: 29754 Comm: syz.3.6566 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
RIP: 0010:copy_from_user_nofault+0x160/0x1c0 mm/maccess.c:226
Code: 24 45 31 f6 31 ff 89 de e8 ad 89 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 30 86 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: ffffffff81a08e70 RBX: 0000000000000008 RCX: ffff88804add0000
RDX: 0000000000010000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: ffff88804add0007 R09: 1ffff110095ba000
R10: dffffc0000000000 R11: ffffed10095ba001 R12: ffff88804add17a8
R13: 00007ffffffff000 R14: ffffc90000dd0988 R15: 0000000000000000
FS: 00007f28d64f06c0(0000) GS:ffff8880b9100000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fb52a9926c8 CR3: 0000000060f7b000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000200000000300 DR2: 0000200000000300
DR3: 0000200000000300 DR6: 00000000ffff0ff0 DR7: 0000000000000600
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_e31a0068e84a1a8d+0x3d/0x948
bpf_dispatcher_nop_func include/linux/bpf.h:890 [inline]
__bpf_prog_run include/linux/filter.h:628 [inline]
bpf_prog_run include/linux/filter.h:635 [inline]
bpf_overflow_handler+0x1c2/0x4a0 kernel/events/core.c:10307
__perf_event_overflow+0x35f/0x550 kernel/events/core.c:9525
perf_swevent_hrtimer+0x3c2/0x550 kernel/events/core.c:10944
__run_hrtimer kernel/time/hrtimer.c:1685 [inline]
__hrtimer_run_queues+0x4b0/0xb60 kernel/time/hrtimer.c:1749
hrtimer_interrupt+0x397/0x8b0 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:trace_lock_release include/trace/events/lock.h:58 [inline]
RIP: 0010:lock_release+0xae/0x8a0 kernel/locking/lockdep.c:5636
Code: 83 fb 08 0f 83 4e 05 00 00 89 d8 c1 e8 06 48 8d 3c c5 e8 1e 8b 8d be 08 00 00 00 e8 5c dc 60 00 89 d8 48 0f a3 05 4a b1 2d 0c <73> 0d e8 5b 47 07 00 84 c0 0f 84 53 05 00 00 48 c7 c0 84 52 8b 8d
RSP: 0018:ffffc9000364fa40 EFLAGS: 00000257
RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffff815d6d94
RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffffffff8d8b1ee8
RBP: ffffc9000364fb60 R08: ffffffff8d8b1eef R09: 1ffffffff1b163dd
R10: dffffc0000000000 R11: fffffbfff1b163de R12: 1ffff920006c9f54
R13: dffffc0000000000 R14: 0000000000000001 R15: 00000000ffffffff
__raw_spin_unlock include/linux/spinlock_api_smp.h:150 [inline]
_raw_spin_unlock+0x12/0x40 kernel/locking/spinlock.c:186
spin_unlock include/linux/spinlock.h:404 [inline]
futex_wake+0x49c/0x540 kernel/futex/core.c:1701
do_futex+0xd83/0x12b0 kernel/futex/core.c:4023
__do_sys_futex kernel/futex/core.c:4095 [inline]
__se_sys_futex+0x389/0x420 kernel/futex/core.c:4076
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: 0033:0x7f28d8298159
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:00007f28d64f00e8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: ffffffffffffffda RBX: 00007f28d851ffa8 RCX: 00007f28d8298159
RDX: 00000000000f4240 RSI: 0000000000000081 RDI: 00007f28d851ffac
RBP: 00007f28d851ffa0 R08: 000eed125611a758 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f28d8520038 R14: 00007ffd6687ebc0 R15: 00007ffd6687eca8
----------------
Code disassembly (best guess):
0: 83 fb 08 cmp $0x8,%ebx
3: 0f 83 4e 05 00 00 jae 0x557
9: 89 d8 mov %ebx,%eax
b: c1 e8 06 shr $0x6,%eax
e: 48 8d 3c c5 e8 1e 8b lea -0x7274e118(,%rax,8),%rdi
15: 8d
16: be 08 00 00 00 mov $0x8,%esi
1b: e8 5c dc 60 00 call 0x60dc7c
20: 89 d8 mov %ebx,%eax
22: 48 0f a3 05 4a b1 2d bt %rax,0xc2db14a(%rip) # 0xc2db174
29: 0c
* 2a: 73 0d jae 0x39 <-- trapping instruction
2c: e8 5b 47 07 00 call 0x7478c
31: 84 c0 test %al,%al
33: 0f 84 53 05 00 00 je 0x58c
39: 48 c7 c0 84 52 8b 8d mov $0xffffffff8d8b5284,%rax