------------[ cut here ]------------
WARNING: CPU: 1 PID: 4429 at mm/maccess.c:226 copy_from_user_nofault+0x160/0x1c0 mm/maccess.c:226
Modules linked in:
CPU: 1 PID: 4429 Comm: kworker/1:14 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
Workqueue: rcu_gp process_srcu
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: 0018:ffffc90000dd0c20 EFLAGS: 00010006
RAX: ffffffff81a07ea0 RBX: 0000000000000000 RCX: ffff888026863b80
RDX: 0000000000010000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: dffffc0000000000 R09: 1ffffffff2037218
R10: dffffc0000000000 R11: fffffbfff2037219 R12: ffff888026865308
R13: dffffc0000000000 R14: ffffc90000dd0c88 R15: 0000000000000000
FS: 0000000000000000(0000) GS:ffff8880b9100000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b31e24220 CR3: 000000000c08e000 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_8848bede53a6b60e+0x34/0xd6c
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
__traceiter_tlb_flush+0x69/0xb0 include/trace/events/tlb.h:38
trace_tlb_flush+0xe6/0x110 include/trace/events/tlb.h:38
switch_mm_irqs_off+0x6f3/0x9b0 arch/x86/mm/tlb.c:-1
flush_tlb_func+0x1d9/0x5b0 arch/x86/mm/tlb.c:773
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:check_preemption_disabled+0x3/0x110 lib/smp_processor_id.c:13
Code: c7 c7 a0 dc 32 8a e8 2c 01 00 00 65 ff 0d 51 ce 48 76 5b c3 00 00 cc 48 c7 c7 a0 eb 79 8a 48 c7 c6 e0 eb 79 8a eb 00 55 41 57 <41> 56 53 48 83 ec 10 65 48 8b 04 25 28 00 00 00 48 89 44 24 08 65
RSP: 0018:ffffc9000348faa8 EFLAGS: 00000246
RAX: 1ffff11004d0ca0d RBX: 0000000000002af9 RCX: ffffffff962bff00
RDX: 0000000000002af8 RSI: ffffffff8a79ebe0 RDI: ffffffff8a79eba0
RBP: 00000000000033cb R08: ffffc9000348f927 R09: 1ffff92000691f24
R10: dffffc0000000000 R11: fffff52000691f25 R12: dffffc0000000000
R13: ffffffff9632a800 R14: 0000000000000001 R15: ffffffff9632a810
delay_tsc+0x18/0xc0 arch/x86/lib/delay.c:69
try_check_zero+0x2c7/0x340 kernel/rcu/srcutree.c:702
srcu_advance_state kernel/rcu/srcutree.c:1227 [inline]
process_srcu+0x195/0xc10 kernel/rcu/srcutree.c:1325
process_one_work+0x85f/0x1010 kernel/workqueue.c:2310
worker_thread+0xaa6/0x1290 kernel/workqueue.c:2457
kthread+0x436/0x520 kernel/kthread.c:334
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:287
----------------
Code disassembly (best guess):
0: c7 c7 a0 dc 32 8a mov $0x8a32dca0,%edi
6: e8 2c 01 00 00 call 0x137
b: 65 ff 0d 51 ce 48 76 decl %gs:0x7648ce51(%rip) # 0x7648ce63
12: 5b pop %rbx
13: c3 ret
14: 00 00 add %al,(%rax)
16: cc int3
17: 48 c7 c7 a0 eb 79 8a mov $0xffffffff8a79eba0,%rdi
1e: 48 c7 c6 e0 eb 79 8a mov $0xffffffff8a79ebe0,%rsi
25: eb 00 jmp 0x27
27: 55 push %rbp
28: 41 57 push %r15
* 2a: 41 56 push %r14 <-- trapping instruction
2c: 53 push %rbx
2d: 48 83 ec 10 sub $0x10,%rsp
31: 65 48 8b 04 25 28 00 mov %gs:0x28,%rax
38: 00 00
3a: 48 89 44 24 08 mov %rax,0x8(%rsp)
3f: 65 gs