------------[ cut here ]------------
WARNING: CPU: 1 PID: 18632 at mm/maccess.c:226 copy_from_user_nofault+0x160/0x1c0 mm/maccess.c:226
Modules linked in:
CPU: 1 PID: 18632 Comm: syz.2.4909 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
RIP: 0010:copy_from_user_nofault+0x160/0x1c0 mm/maccess.c:226
Code: 24 45 31 f6 31 ff 89 de e8 7d 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 00 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: 0000:ffffc90000dd0d38 EFLAGS: 00010006
RAX: ffffffff81a07ea0 RBX: 0000000000000008 RCX: ffff888028371dc0
RDX: 0000000000010000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: ffff888028371dc7 R09: 1ffff1100506e3b8
R10: dffffc0000000000 R11: ffffed100506e3b9 R12: ffff888028373548
R13: 00007ffffffff000 R14: ffffc90000dd0da8 R15: 0000000000000000
FS: 00007fc2e8a596c0(0000) GS:ffff8880b9100000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffffffffc44a0000 CR3: 00000000240a1000 CR4: 00000000003506e0
DR0: 0000200000000300 DR1: 0000200000000300 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_4d571c0aa826a670+0x5b/0xbd8
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+0x163/0x2e0 kernel/trace/bpf_trace.c:1915
trace_tlb_flush+0xe6/0x110 include/trace/events/tlb.h:38
flush_tlb_func+0x4c7/0x5b0 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:refill_stock+0x344/0x540 mm/memcontrol.c:2283
Code: 00 00 9c 8f 44 24 60 f7 44 24 60 00 02 00 00 41 c6 44 1e 04 f8 75 46 41 f7 c7 00 02 00 00 74 01 fb 48 c7 44 24 40 0e 36 e0 45 <49> c7 04 1e 00 00 00 00 41 c7 44 1e 08 00 00 00 00 65 48 8b 04 25
RSP: 0000:ffffc900039cf8e0 EFLAGS: 00000206
RAX: b6b100040993eb00 RBX: dffffc0000000000 RCX: b6b100040993eb00
RDX: dffffc0000000000 RSI: ffffffff8a2b1c00 RDI: ffffffff8a79ec00
RBP: ffffc900039cf9d0 R08: ffffffff901b90f7 R09: 1ffffffff203721e
R10: dffffc0000000000 R11: fffffbfff203721f R12: 000000000000001f
R13: ffff8880b9136498 R14: 1ffff92000739f24 R15: 0000000000000a06
try_charge_memcg+0x10e8/0x14f0 mm/memcontrol.c:2726
try_charge mm/memcontrol.c:2779 [inline]
charge_memcg+0x100/0x2f0 mm/memcontrol.c:6765
__mem_cgroup_charge+0x21/0x80 mm/memcontrol.c:6801
mem_cgroup_charge include/linux/memcontrol.h:700 [inline]
do_anonymous_page mm/memory.c:3842 [inline]
handle_pte_fault mm/memory.c:4648 [inline]
__handle_mm_fault mm/memory.c:4785 [inline]
handle_mm_fault+0x23ff/0x4410 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: 0033:0x7fc2ea7ac29f
Code: b0 00 00 00 0f 29 bc 24 c0 00 00 00 64 48 8b 04 25 28 00 00 00 48 89 44 24 18 31 c0 48 8d 84 24 e0 00 00 00 45 31 c0 48 89 e1 <48> 89 44 24 08 48 8d 44 24 20 c7 04 24 18 00 00 00 c7 44 24 04 30
RSP: 002b:00007fc2e8a58ff0 EFLAGS: 00010246
RAX: 00007fc2e8a590d0 RBX: 0000000000020000 RCX: 00007fc2e8a58ff0
RDX: 00007fc2ea8abfef RSI: 0000000000000023 RDI: 00007fc2e8a590d0
RBP: 00007fc2e8a3a000 R08: 0000000000000000 R09: 00007ffe43fd3e47
R10: 0000000000000008 R11: 0000000000000202 R12: 00007fc2e8a590d0
R13: 000000000000000b R14: 00007ffe43fd3d60 R15: 00007ffe43fd3e48
----------------
Code disassembly (best guess):
0: 00 00 add %al,(%rax)
2: 9c pushf
3: 8f 44 24 60 pop 0x60(%rsp)
7: f7 44 24 60 00 02 00 testl $0x200,0x60(%rsp)
e: 00
f: 41 c6 44 1e 04 f8 movb $0xf8,0x4(%r14,%rbx,1)
15: 75 46 jne 0x5d
17: 41 f7 c7 00 02 00 00 test $0x200,%r15d
1e: 74 01 je 0x21
20: fb sti
21: 48 c7 44 24 40 0e 36 movq $0x45e0360e,0x40(%rsp)
28: e0 45
* 2a: 49 c7 04 1e 00 00 00 movq $0x0,(%r14,%rbx,1) <-- trapping instruction
31: 00
32: 41 c7 44 1e 08 00 00 movl $0x0,0x8(%r14,%rbx,1)
39: 00 00
3b: 65 gs
3c: 48 rex.W
3d: 8b .byte 0x8b
3e: 04 25 add $0x25,%al