mac80211_hwsim: wmediumd released netlink socket, switching to perfect channel medium Oops: general protection fault, probably for non-canonical address 0xdffffc0000000000: 0000 [#1] SMP KASAN NOPTI KASAN: null-ptr-deref in range [0x0000000000000000-0x0000000000000007] CPU: 0 UID: 0 PID: 4038 Comm: syz-executor.2 Tainted: G W 6.17.0-rc3-next-20250829 #1 PREEMPT(voluntary) Tainted: [W]=WARN Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 RIP: 0010:perf_trace_add+0x21b/0x340 Code: 00 0f 85 3a 01 00 00 4c 89 75 00 4d 85 ed 74 2a e8 da b2 f5 ff 49 8d 7d 08 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 df 00 00 00 4d 89 75 08 eb 03 45 31 e4 e8 ad b2 RSP: 0018:ffff888016c2f748 EFLAGS: 00010057 RAX: dffffc0000000000 RBX: ffff888009649f40 RCX: ffffc90008061000 RDX: 0000000000000000 RSI: ffffffff817e34a6 RDI: 0000000000000007 RBP: ffffe8ffffc15800 R08: ffffffff85ca3b60 R09: ffffed1002d85f3f R10: 0000000000000000 R11: 0000000000000001 R12: 0000000000000000 R13: ffffffffffffffff R14: ffff888009649fa0 R15: ffff888009649fd8 FS: 00007f88108f7700(0000) GS:ffff8880e55dd000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f3ac41a55b0 CR3: 000000001c098000 CR4: 0000000000350ef0 Call Trace: event_sched_in+0x446/0xb60 merge_sched_in+0xb4d/0x1810 visit_groups_merge.constprop.0.isra.0+0x8d1/0x1150 ctx_sched_in+0x579/0x9b0 perf_event_sched_in+0x5d/0x90 ctx_resched+0x398/0x840 __perf_install_in_context+0x436/0xb90 remote_function+0x129/0x1b0 generic_exec_single+0x1ca/0x2c0 smp_call_function_single+0x327/0x420 task_function_call+0xe4/0x170 perf_install_in_context+0x2ca/0x570 __do_sys_perf_event_open+0x1992/0x2c20 do_syscall_64+0xbf/0x360 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f8813381b19 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 bc ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f88108f7188 EFLAGS: 00000246 ORIG_RAX: 000000000000012a RAX: ffffffffffffffda RBX: 00007f8813494f60 RCX: 00007f8813381b19 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000020000180 RBP: 00007f88133dbf6d R08: 0000000000000000 R09: 0000000000000000 R10: ffffffffffffffff R11: 0000000000000246 R12: 0000000000000000 R13: 00007fffe2e4bd7f R14: 00007f88108f7300 R15: 0000000000022000 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:perf_trace_add+0x21b/0x340 Code: 00 0f 85 3a 01 00 00 4c 89 75 00 4d 85 ed 74 2a e8 da b2 f5 ff 49 8d 7d 08 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 df 00 00 00 4d 89 75 08 eb 03 45 31 e4 e8 ad b2 RSP: 0018:ffff888016c2f748 EFLAGS: 00010057 RAX: dffffc0000000000 RBX: ffff888009649f40 RCX: ffffc90008061000 RDX: 0000000000000000 RSI: ffffffff817e34a6 RDI: 0000000000000007 RBP: ffffe8ffffc15800 R08: ffffffff85ca3b60 R09: ffffed1002d85f3f R10: 0000000000000000 R11: 0000000000000001 R12: 0000000000000000 R13: ffffffffffffffff R14: ffff888009649fa0 R15: ffff888009649fd8 FS: 00007f88108f7700(0000) GS:ffff8880e55dd000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f3ac41a55b0 CR3: 000000001c098000 CR4: 0000000000350ef0 note: syz-executor.2[4038] exited with irqs disabled note: syz-executor.2[4038] exited with preempt_count 3 ---------------- Code disassembly (best guess): 0: 00 0f add %cl,(%rdi) 2: 85 3a test %edi,(%rdx) 4: 01 00 add %eax,(%rax) 6: 00 4c 89 75 add %cl,0x75(%rcx,%rcx,4) a: 00 4d 85 add %cl,-0x7b(%rbp) d: ed in (%dx),%eax e: 74 2a je 0x3a 10: e8 da b2 f5 ff callq 0xfff5b2ef 15: 49 8d 7d 08 lea 0x8(%r13),%rdi 19: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax 20: fc ff df 23: 48 89 fa mov %rdi,%rdx 26: 48 c1 ea 03 shr $0x3,%rdx * 2a: 80 3c 02 00 cmpb $0x0,(%rdx,%rax,1) <-- trapping instruction 2e: 0f 85 df 00 00 00 jne 0x113 34: 4d 89 75 08 mov %r14,0x8(%r13) 38: eb 03 jmp 0x3d 3a: 45 31 e4 xor %r12d,%r12d 3d: e8 .byte 0xe8 3e: ad lods %ds:(%rsi),%eax 3f: b2 .byte 0xb2