------------[ cut here ]------------
WARNING: CPU: 1 PID: 5449 at mm/maccess.c:226 copy_from_user_nofault+0x160/0x1c0 mm/maccess.c:226
Modules linked in:
CPU: 1 PID: 5449 Comm: syz.1.347 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/02/2025
RIP: 0010:copy_from_user_nofault+0x160/0x1c0 mm/maccess.c:226
Code: 24 45 31 f6 31 ff 89 de e8 8d f6 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 10 f3 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: 0000:ffffc90000dd0d40 EFLAGS: 00010006
RAX: ffffffff819ed900 RBX: 0000000000000008 RCX: ffff8880208dbb80
RDX: 0000000000010000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: dffffc0000000000 R09: ffffed100f10f241
R10: ffffed100f10f241 R11: 1ffff1100f10f240 R12: ffff8880208dd308
R13: dffffc0000000000 R14: ffffc90000dd0da8 R15: 0000000000000000
FS: 00007f562a5786c0(0000) GS:ffff8880b9100000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f562c2a8830 CR3: 0000000056f58000 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_user kernel/trace/bpf_trace.c:166 [inline]
bpf_probe_read_user+0x26/0x70 kernel/trace/bpf_trace.c:163
bpf_prog_87c4e24aeb87061a+0x5b/0xa68
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_trace_run kernel/trace/bpf_trace.c:1878 [inline]
bpf_trace_run2+0x15b/0x2d0 kernel/trace/bpf_trace.c:1915
trace_tlb_flush+0xe6/0x110 include/trace/events/tlb.h:38
flush_tlb_func+0x43f/0x510 arch/x86/mm/tlb.c:855
flush_smp_call_function_queue+0x2a9/0x760 kernel/smp.c:628
__sysvec_call_function_single+0x98/0x240 arch/x86/kernel/smp.c:248
instr_sysvec_call_function_single arch/x86/kernel/smp.c:243 [inline]
sysvec_call_function_single+0x98/0xc0 arch/x86/kernel/smp.c:243
asm_sysvec_call_function_single+0x16/0x20 arch/x86/include/asm/idtentry.h:684
RIP: 0010:strlen+0x3f/0x60 lib/string.c:581
Code: fc ff df 48 89 fb 49 89 c7 48 89 d8 48 c1 e8 03 42 0f b6 04 30 84 c0 75 11 48 ff c3 49 8d 47 01 42 80 7c 3f 01 00 75 de eb 19 <89> d9 80 e1 07 38 c1 7c e6 49 89 fc 48 89 df e8 2d a4 be fd 4c 89
RSP: 0000:ffffc900033ff898 EFLAGS: 00000206
RAX: 0000000000000006 RBX: ffffffff8a0c20a8 RCX: 1ffff9200067ff20
RDX: ffffffff81c143a0 RSI: ffffffff8c11c760 RDI: ffffffff8a0c20a0
RBP: ffffc900033ff9b0 R08: dffffc0000000000 R09: fffffbfff1ad33a6
R10: fffffbfff1ad33a6 R11: 1ffffffff1ad33a5 R12: dffffc0000000000
R13: dffffc0000000000 R14: dffffc0000000000 R15: 0000000000000007
trace_event_get_offsets_lock include/trace/events/lock.h:39 [inline]
perf_trace_lock+0xb5/0x370 include/trace/events/lock.h:39
trace_lock_release include/trace/events/lock.h:58 [inline]
lock_release+0x823/0x870 kernel/locking/lockdep.c:5634
do_set_pte+0x3c9/0x530 mm/memory.c:4069
filemap_map_pages+0xe7e/0x1390 mm/filemap.c:3344
do_fault_around mm/memory.c:4243 [inline]
do_read_fault mm/memory.c:4258 [inline]
do_fault mm/memory.c:4392 [inline]
handle_pte_fault mm/memory.c:4650 [inline]
__handle_mm_fault mm/memory.c:4785 [inline]
handle_mm_fault+0x257d/0x43b0 mm/memory.c:4883
do_user_addr_fault+0x489/0xc80 arch/x86/mm/fault.c:1357
handle_page_fault arch/x86/mm/fault.c:1445 [inline]
exc_page_fault+0x60/0x100 arch/x86/mm/fault.c:1501
asm_exc_page_fault+0x22/0x30 arch/x86/include/asm/idtentry.h:606
RIP: 0033:0x7f562c2a8830
Code: Unable to access opcode bytes at RIP 0x7f562c2a8806.
RSP: 002b:00007f562a578118 EFLAGS: 00010246
RAX: fffffffffffffeb8 RBX: 00007f562a5786c0 RCX: 00007f562c345e89
RDX: 00007f562a578d78 RSI: 0000000000000058 RDI: 00007f562a5786c0
RBP: 0000000000000000 R08: 00007f562a5786c0 R09: 00007fff3b89cec7
R10: 0000000000000008 R11: 0000000000000206 R12: ffffffffffffffa8
R13: 000000000000000b R14: 00007fff3b89cde0 R15: 00007fff3b89cec8
----------------
Code disassembly (best guess), 2 bytes skipped:
0: df 48 89 fisttps -0x77(%rax)
3: fb sti
4: 49 89 c7 mov %rax,%r15
7: 48 89 d8 mov %rbx,%rax
a: 48 c1 e8 03 shr $0x3,%rax
e: 42 0f b6 04 30 movzbl (%rax,%r14,1),%eax
13: 84 c0 test %al,%al
15: 75 11 jne 0x28
17: 48 ff c3 inc %rbx
1a: 49 8d 47 01 lea 0x1(%r15),%rax
1e: 42 80 7c 3f 01 00 cmpb $0x0,0x1(%rdi,%r15,1)
24: 75 de jne 0x4
26: eb 19 jmp 0x41
* 28: 89 d9 mov %ebx,%ecx <-- trapping instruction
2a: 80 e1 07 and $0x7,%cl
2d: 38 c1 cmp %al,%cl
2f: 7c e6 jl 0x17
31: 49 89 fc mov %rdi,%r12
34: 48 89 df mov %rbx,%rdi
37: e8 2d a4 be fd call 0xfdbea469
3c: 4c rex.WR
3d: 89 .byte 0x89