------------[ cut here ]------------
WARNING: CPU: 0 PID: 14532 at mm/maccess.c:226 copy_from_user_nofault+0x160/0x1c0 mm/maccess.c:226
Modules linked in:
CPU: 0 PID: 14532 Comm: syz.2.2924 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026
RIP: 0010:copy_from_user_nofault+0x160/0x1c0 mm/maccess.c:226
Code: 24 45 31 f6 31 ff 89 de e8 fd 94 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 80 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:ffffc90000007910 EFLAGS: 00010006
RAX: ffffffff81a08f90 RBX: 0000000000000008 RCX: ffff88802c2dbb80
RDX: 0000000000010000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: ffff88802c2dbb87 R09: 1ffff1100585b770
R10: dffffc0000000000 R11: ffffed100585b771 R12: ffff88802c2dd308
R13: 00007ffffffff000 R14: ffffc90000007988 R15: 0000000020000000
FS: 00007fa348d866c0(0000) GS:ffff8880b9000000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000100000000 CR3: 000000007ebcb000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 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_bb078d28de6ff61b+0x40/0xc0c
bpf_dispatcher_nop_func include/linux/bpf.h:888 [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: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:__mutex_unlock_slowpath+0x658/0x6c0 kernel/locking/mutex.c:-1
Code: 32 ff ff ff 48 b8 00 00 00 00 00 fc ff df 41 c6 44 04 04 f8 4c 8d 7c 24 60 48 8b 3c 24 e8 a0 fd 00 00 4c 89 ff e8 38 9e 8d f7 <48> b8 00 00 00 00 00 fc ff df 41 c6 44 04 0c f8 66 41 c7 44 04 08
RSP: 0018:ffffc900031ffb20 EFLAGS: 00000246
RAX: ffff88802c2dbb80 RBX: 0000000000000000 RCX: ffffffff89c4d4b0
RDX: 0000000000000001 RSI: 0000000000000008 RDI: ffffc900031ffba0
RBP: ffffc900031ffc10 R08: ffffc900031ffba7 R09: 1ffff9200063ff74
R10: dffffc0000000000 R11: fffff5200063ff75 R12: 1ffff9200063ff68
R13: ffff888060a70c48 R14: 1ffffffff1b142e1 R15: ffffc900031ffba0
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: 0033:0x7fa34ab2c819
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:00007fa348d86028 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007fa34ada5fa0 RCX: 00007fa34ab2c819
RDX: 0000000000000004 RSI: 0000000040042408 RDI: 0000000000000005
RBP: 00007fa34abc2c91 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fa34ada6038 R14: 00007fa34ada5fa0 R15: 00007ffe638b8538
----------------
Code disassembly (best guess), 3 bytes skipped:
0: ff 48 b8 decl -0x48(%rax)
3: 00 00 add %al,(%rax)
5: 00 00 add %al,(%rax)
7: 00 fc add %bh,%ah
9: ff lcall (bad)
a: df 41 c6 filds -0x3a(%rcx)
d: 44 04 04 rex.R add $0x4,%al
10: f8 clc
11: 4c 8d 7c 24 60 lea 0x60(%rsp),%r15
16: 48 8b 3c 24 mov (%rsp),%rdi
1a: e8 a0 fd 00 00 call 0xfdbf
1f: 4c 89 ff mov %r15,%rdi
22: e8 38 9e 8d f7 call 0xf78d9e5f
* 27: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax <-- trapping instruction
2e: fc ff df
31: 41 c6 44 04 0c f8 movb $0xf8,0xc(%r12,%rax,1)
37: 66 data16
38: 41 rex.B
39: c7 .byte 0xc7
3a: 44 04 08 rex.R add $0x8,%al