------------[ cut here ]------------
WARNING: CPU: 0 PID: 4938 at mm/maccess.c:226 copy_from_user_nofault+0x160/0x1c0 mm/maccess.c:226
Modules linked in:
CPU: 0 PID: 4938 Comm: syz.3.210 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/18/2025
RIP: 0010:copy_from_user_nofault+0x160/0x1c0 mm/maccess.c:226
Code: 24 45 31 f6 31 ff 89 de e8 6d 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 f0 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:ffffc90000007d30 EFLAGS: 00010006
RAX: ffffffff819ed660 RBX: 0000000000000008 RCX: ffff88807c82bb80
RDX: 0000000000010000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: dffffc0000000000 R09: ffffed100f905771
R10: ffffed100f905771 R11: 1ffff1100f905770 R12: ffff88807c82d308
R13: 00007ffffffff000 R14: ffffc90000007da8 R15: 0000000020000000
FS: 00007f62b01ca6c0(0000) GS:ffff8880b9000000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f62b1ef9f80 CR3: 0000000021d66000 CR4: 00000000003506f0
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_compat kernel/trace/bpf_trace.c:281 [inline]
bpf_probe_read_compat+0xdd/0x170 kernel/trace/bpf_trace.c:277
bpf_prog_2c2e2930f3e7254b+0x5e/0xbac
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:rcu_lockdep_current_cpu_online+0x52/0x130 kernel/rcu/tree.c:1171
Code: 00 65 ff 05 c8 be 9e 7e e8 8b 8d 45 08 89 c3 83 f8 08 0f 83 cd 00 00 00 49 bf 00 00 00 00 00 fc ff df 48 8d 1c dd 20 28 bc 8b <48> 89 d8 48 c1 e8 03 42 80 3c 38 00 74 08 48 89 df e8 28 81 58 00
RSP: 0000:ffffc9000343faa0 EFLAGS: 00000293
RAX: 0000000000000000 RBX: ffffffff8bbc2820 RCX: ed7e1126208c7e00
RDX: 0000000000000000 RSI: ffffffff8a59a4a0 RDI: ffffffff8a59a460
RBP: ffffea0001cee8c0 R08: dffffc0000000000 R09: fffff9400039dd11
R10: fffff9400039dd11 R11: 1ffffd400039dd10 R12: 1ffff92000687f81
R13: ffffc9000343fc08 R14: 0000000000000000 R15: dffffc0000000000
rcu_read_lock_held_common kernel/rcu/update.c:112 [inline]
rcu_read_lock_held+0x1a/0x40 kernel/rcu/update.c:309
xa_entry include/linux/xarray.h:1197 [inline]
xas_next_entry+0x202/0x3d0 include/linux/xarray.h:1656
next_map_page mm/filemap.c:3296 [inline]
filemap_map_pages+0xeaa/0x1390 mm/filemap.c:3352
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+0x2580/0x43c0 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: 0033:0x7f62b1ef9f80
Code: Unable to access opcode bytes at RIP 0x7f62b1ef9f56.
RSP: 002b:00007f62b01ca118 EFLAGS: 00010246
RAX: fffffffffffffeb8 RBX: 00007f62b01ca6c0 RCX: 00007f62b1f97609
RDX: 00007f62b01cad78 RSI: 0000000000000058 RDI: 00007f62b01ca6c0
RBP: 0000000000000000 R08: 00007f62b01ca6c0 R09: 00007fff9ee5feb7
R10: 0000000000000008 R11: 0000000000000206 R12: ffffffffffffffa8
R13: 000000000000000b R14: 00007fff9ee5fdd0 R15: 00007fff9ee5feb8
----------------
Code disassembly (best guess):
0: 00 65 ff add %ah,-0x1(%rbp)
3: 05 c8 be 9e 7e add $0x7e9ebec8,%eax
8: e8 8b 8d 45 08 call 0x8458d98
d: 89 c3 mov %eax,%ebx
f: 83 f8 08 cmp $0x8,%eax
12: 0f 83 cd 00 00 00 jae 0xe5
18: 49 bf 00 00 00 00 00 movabs $0xdffffc0000000000,%r15
1f: fc ff df
22: 48 8d 1c dd 20 28 bc lea -0x7443d7e0(,%rbx,8),%rbx
29: 8b
* 2a: 48 89 d8 mov %rbx,%rax <-- trapping instruction
2d: 48 c1 e8 03 shr $0x3,%rax
31: 42 80 3c 38 00 cmpb $0x0,(%rax,%r15,1)
36: 74 08 je 0x40
38: 48 89 df mov %rbx,%rdi
3b: e8 28 81 58 00 call 0x588168