------------[ cut here ]------------
WARNING: CPU: 1 PID: 7431 at mm/maccess.c:226 copy_from_user_nofault+0x160/0x1c0 mm/maccess.c:226
Modules linked in:
CPU: 1 PID: 7431 Comm: syz.1.853 Not tainted 5.15.189-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025
RIP: 0010:copy_from_user_nofault+0x160/0x1c0 mm/maccess.c:226
Code: 24 45 31 f6 31 ff 89 de e8 ed f7 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 70 f4 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:ffffc90000dd0c60 EFLAGS: 00010006
RAX: ffffffff819ecfb0 RBX: 0000000000000008 RCX: ffff88802c723b80
RDX: 0000000000010000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: dffffc0000000000 R09: fffffbfff1ff6e19
R10: fffffbfff1ff6e19 R11: 1ffffffff1ff6e18 R12: ffff88802c725308
R13: dffffc0000000000 R14: ffffc90000dd0cc8 R15: 0000000000000000
FS: 00007fb38e30d6c0(0000) GS:ffff8880b9100000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000110e22fff6 CR3: 000000002b90d000 CR4: 00000000003506e0
DR0: 0000200000000300 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_user kernel/trace/bpf_trace.c:166 [inline]
bpf_probe_read_user+0x26/0x70 kernel/trace/bpf_trace.c:163
bpf_prog_02073d59a3c0f06f+0x3d/0x9f8
bpf_dispatcher_nop_func include/linux/bpf.h:790 [inline]
__bpf_prog_run include/linux/filter.h:628 [inline]
bpf_prog_run include/linux/filter.h:635 [inline]
__bpf_trace_run kernel/trace/bpf_trace.c:1878 [inline]
bpf_trace_run5+0x1ae/0x370 kernel/trace/bpf_trace.c:1918
trace_signal_generate+0x16b/0x1c0 include/trace/events/signal.h:50
__send_signal+0x5d0/0xdb0 kernel/signal.c:1184
do_send_sig_info kernel/signal.c:1294 [inline]
group_send_sig_info+0x1c6/0x220 kernel/signal.c:1442
do_bpf_send_signal+0x7b/0x150 kernel/trace/bpf_trace.c:779
irq_work_single kernel/irq_work.c:155 [inline]
irq_work_run_list+0x1bb/0x330 kernel/irq_work.c:177
irq_work_run+0x63/0xe0 kernel/irq_work.c:186
__sysvec_irq_work+0x98/0x240 arch/x86/kernel/irq_work.c:22
instr_sysvec_irq_work arch/x86/kernel/irq_work.c:17 [inline]
sysvec_irq_work+0x98/0xc0 arch/x86/kernel/irq_work.c:17
asm_sysvec_irq_work+0x16/0x20 arch/x86/include/asm/idtentry.h:713
RIP: 0010:arch_static_branch arch/x86/include/asm/jump_label.h:27 [inline]
RIP: 0010:static_key_false include/linux/jump_label.h:212 [inline]
RIP: 0010:native_write_msr arch/x86/include/asm/msr.h:156 [inline]
RIP: 0010:wrmsr arch/x86/include/asm/msr.h:263 [inline]
RIP: 0010:native_apic_msr_write+0x35/0x50 arch/x86/include/asm/apic.h:208
Code: 74 2a 83 ff 30 74 25 eb 10 81 ff d0 00 00 00 74 1b 81 ff e0 00 00 00 74 13 c1 ef 04 81 c7 00 08 00 00 89 f9 89 f0 31 d2 0f 30 01 c3 89 f6 31 d2 e9 3f 5c c7 02 66 2e 0f 1f 84 00 00 00 00 00
RSP: 0018:ffffc900030bf8b0 EFLAGS: 00000246
RAX: 00000000000000f6 RBX: ffffffff8bbbea20 RCX: 000000000000083f
RDX: 0000000000000000 RSI: 00000000000000f6 RDI: 000000000000083f
RBP: 0000000000000000 R08: dffffc0000000000 R09: ffffed10172267a7
R10: ffffed10172267a7 R11: 1ffff110172267a6 R12: ffff8880b9133b01
R13: dffffc0000000000 R14: dffffc0000000000 R15: 0000000000000020
arch_irq_work_raise+0x82/0xd0 arch/x86/kernel/irq_work.c:31
irq_work_queue+0x95/0x140 kernel/irq_work.c:75
bpf_send_signal_common+0x2b2/0x420 kernel/trace/bpf_trace.c:820
____bpf_send_signal_thread kernel/trace/bpf_trace.c:841 [inline]
bpf_send_signal_thread+0x12/0x20 kernel/trace/bpf_trace.c:839
bpf_prog_b7be628660dc1b90+0x1a/0x46c
bpf_dispatcher_nop_func include/linux/bpf.h:790 [inline]
__bpf_prog_run include/linux/filter.h:628 [inline]
bpf_prog_run include/linux/filter.h:635 [inline]
__bpf_trace_run kernel/trace/bpf_trace.c:1878 [inline]
bpf_trace_run1+0x153/0x2d0 kernel/trace/bpf_trace.c:1914
trace_percpu_create_chunk+0x13e/0x1a0 include/trace/events/percpu.h:90
pcpu_create_chunk+0x80e/0xbc0 mm/percpu-vm.c:353
pcpu_alloc+0x733/0x1770 mm/percpu.c:1834
bpf_map_alloc_percpu+0xc5/0x150 kernel/bpf/syscall.c:455
prealloc_init kernel/bpf/hashtab.c:335 [inline]
htab_map_alloc+0xccb/0x15a0 kernel/bpf/hashtab.c:554
find_and_alloc_map kernel/bpf/syscall.c:127 [inline]
map_create+0x485/0x2170 kernel/bpf/syscall.c:880
__sys_bpf+0x2a4/0x670 kernel/bpf/syscall.c:4633
__do_sys_bpf kernel/bpf/syscall.c:4755 [inline]
__se_sys_bpf kernel/bpf/syscall.c:4753 [inline]
__x64_sys_bpf+0x78/0x90 kernel/bpf/syscall.c:4753
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: 0033:0x7fb3904a5b69
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:00007fb38e30d038 EFLAGS: 00000246 ORIG_RAX: 0000000000000141
RAX: ffffffffffffffda RBX: 00007fb3906ccfa0 RCX: 00007fb3904a5b69
RDX: 0000000000000050 RSI: 0000200000000840 RDI: 2100000000000000
RBP: 00007fb390528df1 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007fb3906ccfa0 R15: 00007ffed9b6cc28
----------------
Code disassembly (best guess):
0: 74 2a je 0x2c
2: 83 ff 30 cmp $0x30,%edi
5: 74 25 je 0x2c
7: eb 10 jmp 0x19
9: 81 ff d0 00 00 00 cmp $0xd0,%edi
f: 74 1b je 0x2c
11: 81 ff e0 00 00 00 cmp $0xe0,%edi
17: 74 13 je 0x2c
19: c1 ef 04 shr $0x4,%edi
1c: 81 c7 00 08 00 00 add $0x800,%edi
22: 89 f9 mov %edi,%ecx
24: 89 f0 mov %esi,%eax
26: 31 d2 xor %edx,%edx
28: 0f 30 wrmsr
* 2a: eb 01 jmp 0x2d <-- trapping instruction
2c: c3 ret
2d: 89 f6 mov %esi,%esi
2f: 31 d2 xor %edx,%edx
31: e9 3f 5c c7 02 jmp 0x2c75c75
36: 66 2e 0f 1f 84 00 00 cs nopw 0x0(%rax,%rax,1)
3d: 00 00 00