------------[ cut here ]------------ WARNING: CPU: 1 PID: 4437 at mm/maccess.c:226 copy_from_user_nofault+0x160/0x1c0 mm/maccess.c:226 Modules linked in: CPU: 1 PID: 4437 Comm: kworker/u4:7 Not tainted 5.15.186-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 Workqueue: phy11 ieee80211_iface_work RIP: 0010:copy_from_user_nofault+0x160/0x1c0 mm/maccess.c:226 Code: 24 45 31 f6 31 ff 89 de e8 2d e2 d7 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 b0 de d7 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: ffffffff819fe460 RBX: 0000000000000008 RCX: ffff8880225b5940 RDX: 0000000000010000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: 0000000000000000 R08: dffffc0000000000 R09: fffffbfff1ff7419 R10: fffffbfff1ff7419 R11: 1ffffffff1ff7418 R12: ffff8880225b70c8 R13: dffffc0000000000 R14: ffffc90000dd0c88 R15: 0000000000000000 FS: 0000000000000000(0000) GS:ffff8880b9100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007ff8fc878a10 CR3: 000000000be8e000 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_02073d59a3c0f06f+0x3d/0xb9c 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_run2+0x15b/0x2d0 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+0x6e3/0x9a0 arch/x86/mm/tlb.c:-1 flush_tlb_func+0x1bc/0x510 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:kcov_remote_stop+0x24/0x4c0 kernel/kcov.c:1030 Code: e9 45 89 e0 eb 8c 55 41 57 41 56 41 55 41 54 53 48 83 ec 30 65 4c 8b 3d ea 9f 8a 7e 65 8b 05 eb 9f 8a 7e a9 00 00 ff 00 74 0f <48> 83 c4 30 5b 41 5c 41 5d 41 5e 41 5f 5d c3 48 c7 04 24 00 00 00 RSP: 0018:ffffc900036dfb68 EFLAGS: 00000206 RAX: 42e23c32cf4cfb00 RBX: dffffc0000000000 RCX: 42e23c32cf4cfb00 RDX: dffffc0000000000 RSI: ffffffff8a0b11c0 RDI: ffffffff8a59ab80 RBP: ffff88802b555b40 R08: dffffc0000000000 R09: fffffbfff1ff7439 R10: fffffbfff1ff7439 R11: 1ffffffff1ff7438 R12: ffff88805cf2cc80 R13: 0000000000000246 R14: 0000000000000001 R15: ffff8880225b5940 ieee80211_iface_work+0x79d/0xc60 net/mac80211/iface.c:1516 process_one_work+0x863/0x1000 kernel/workqueue.c:2310 worker_thread+0xaa8/0x12a0 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: e9 45 89 e0 eb jmp 0xebe0894a 5: 8c 55 41 mov %ss,0x41(%rbp) 8: 57 push %rdi 9: 41 56 push %r14 b: 41 55 push %r13 d: 41 54 push %r12 f: 53 push %rbx 10: 48 83 ec 30 sub $0x30,%rsp 14: 65 4c 8b 3d ea 9f 8a mov %gs:0x7e8a9fea(%rip),%r15 # 0x7e8aa006 1b: 7e 1c: 65 8b 05 eb 9f 8a 7e mov %gs:0x7e8a9feb(%rip),%eax # 0x7e8aa00e 23: a9 00 00 ff 00 test $0xff0000,%eax 28: 74 0f je 0x39 * 2a: 48 83 c4 30 add $0x30,%rsp <-- trapping instruction 2e: 5b pop %rbx 2f: 41 5c pop %r12 31: 41 5d pop %r13 33: 41 5e pop %r14 35: 41 5f pop %r15 37: 5d pop %rbp 38: c3 ret 39: 48 rex.W 3a: c7 .byte 0xc7 3b: 04 24 add $0x24,%al 3d: 00 00 add %al,(%rax)