------------[ cut here ]------------ wlan0: Failed check-sdata-in-driver check, flags: 0x0 WARNING: net/mac80211/driver-ops.h:1723 at drv_can_activate_links net/mac80211/driver-ops.h:1723 [inline], CPU#0: kworker/u12:16/26434 WARNING: net/mac80211/driver-ops.h:1723 at ieee80211_set_active_links+0x2d0/0x9a0 net/mac80211/link.c:614, CPU#0: kworker/u12:16/26434 Modules linked in: CPU: 0 UID: 0 PID: 26434 Comm: kworker/u12:16 Tainted: G U L syzkaller #0 PREEMPT(full) Tainted: [U]=USER, [L]=SOFTLOCKUP Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026 Workqueue: events_unbound cfg80211_wiphy_work RIP: 0010:drv_can_activate_links net/mac80211/driver-ops.h:1723 [inline] RIP: 0010:ieee80211_set_active_links+0x2d7/0x9a0 net/mac80211/link.c:614 Code: 05 00 00 e8 ab 5e 09 f7 48 8b 34 24 48 81 c6 20 01 00 00 48 89 34 24 e8 97 5e 09 f7 48 8d 3d e0 33 ea 05 48 8b 34 24 44 89 fa <67> 48 0f b9 3a e9 e0 fe ff ff e8 7a 5e 09 f7 0f b7 c5 4c 8d bb c8 RSP: 0018:ffffc90005317ae8 EFLAGS: 00010293 RAX: 0000000000000000 RBX: ffff888145e82b78 RCX: ffffffff8afeabce RDX: 0000000000000000 RSI: ffff888145e80120 RDI: ffffffff90e8e010 RBP: 000000000000000f R08: 0000000000000005 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: ffff888145e81878 R13: 0000000000000000 R14: ffff888145ef0f20 R15: 0000000000000000 FS: 0000000000000000(0000) GS:ffff888124377000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000200000000000 CR3: 0000000012966000 CR4: 00000000003526f0 Call Trace: ieee80211_if_parse_active_links+0xbb/0x120 net/mac80211/debugfs_netdev.c:732 wiphy_locked_debugfs_write_work+0xe6/0x1c0 net/wireless/debugfs.c:248 cfg80211_wiphy_work+0x410/0x570 net/wireless/core.c:513 process_one_work+0xa0e/0x1980 kernel/workqueue.c:3314 process_scheduled_works kernel/workqueue.c:3397 [inline] worker_thread+0x5ef/0xe50 kernel/workqueue.c:3478 kthread+0x370/0x450 kernel/kthread.c:436 ret_from_fork+0x72b/0xd50 arch/x86/kernel/process.c:158 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245 ---------------- Code disassembly (best guess): 0: 05 00 00 e8 ab add $0xabe80000,%eax 5: 5e pop %rsi 6: 09 f7 or %esi,%edi 8: 48 8b 34 24 mov (%rsp),%rsi c: 48 81 c6 20 01 00 00 add $0x120,%rsi 13: 48 89 34 24 mov %rsi,(%rsp) 17: e8 97 5e 09 f7 call 0xf7095eb3 1c: 48 8d 3d e0 33 ea 05 lea 0x5ea33e0(%rip),%rdi # 0x5ea3403 23: 48 8b 34 24 mov (%rsp),%rsi 27: 44 89 fa mov %r15d,%edx * 2a: 67 48 0f b9 3a ud1 (%edx),%rdi <-- trapping instruction 2f: e9 e0 fe ff ff jmp 0xffffff14 34: e8 7a 5e 09 f7 call 0xf7095eb3 39: 0f b7 c5 movzwl %bp,%eax 3c: 4c rex.WR 3d: 8d .byte 0x8d 3e: bb .byte 0xbb 3f: c8 .byte 0xc8