------------[ cut here ]------------ WARNING: kernel/kcov.c:872 at kcov_remote_start+0x55a/0x7f0 kernel/kcov.c:872, CPU#0: syz.4.172/6553 Modules linked in: CPU: 0 UID: 0 PID: 6553 Comm: syz.4.172 Not tainted syzkaller #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/18/2025 RIP: 0010:kcov_remote_start+0x55a/0x7f0 kernel/kcov.c:872 Code: ff 4c 89 ff be 03 00 00 00 e8 12 b7 c8 02 e9 eb fa ff ff e8 b8 40 7a 09 f7 c3 00 02 00 00 0f 84 da fa ff ff e9 5a fc ff ff 90 <0f> 0b 90 e8 8e 59 7a 09 89 c0 48 c7 c7 48 c7 4b 92 48 03 3c c5 d0 RSP: 0018:ffffc9000c9c7270 EFLAGS: 00010002 RAX: 0000000080000200 RBX: 0000000000000246 RCX: 0000000000000002 RDX: 0000000000030000 RSI: ffffffff8d6f99c1 RDI: ffffffff8b9efce0 RBP: ffffc9000c9c74d0 R08: ffffc9000c9c6ff0 R09: 0000000000000020 R10: dffffc0000000000 R11: ffffffff819db350 R12: ffff8880b8628748 R13: ffffffff81bfaca7 R14: ffff888030a09e40 R15: 0000000000000000 FS: 00007fe8b90606c0(0000) GS:ffff88812616c000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000555582251808 CR3: 0000000027a3c000 CR4: 00000000003526f0 Call Trace: kcov_remote_start_common include/linux/kcov.h:50 [inline] ieee80211_rx_list+0x52c/0x2b90 net/mac80211/rx.c:5429 ieee80211_rx_napi+0x1a8/0x3d0 net/mac80211/rx.c:5470 ieee80211_rx include/net/mac80211.h:5214 [inline] ieee80211_handle_queued_frames+0xe8/0x1f0 net/mac80211/main.c:453 ieee80211_stop_device+0x3e/0xf0 net/mac80211/util.c:1563 ieee80211_do_stop+0x1797/0x1f50 net/mac80211/iface.c:726 ieee80211_stop+0x1b1/0x240 net/mac80211/iface.c:819 __dev_close_many+0x364/0x6f0 net/core/dev.c:1755 netif_close_many+0x225/0x410 net/core/dev.c:1780 netif_close+0x158/0x210 net/core/dev.c:1797 dev_close+0x10a/0x220 net/core/dev_api.c:220 cfg80211_shutdown_all_interfaces+0xd4/0x220 net/wireless/core.c:277 cfg80211_rfkill_set_block+0x2d/0x50 net/wireless/core.c:307 rfkill_set_block+0x1d2/0x440 net/rfkill/core.c:346 rfkill_fop_write+0x44b/0x570 net/rfkill/core.c:1301 vfs_write+0x27e/0xb30 fs/read_write.c:684 ksys_write+0x145/0x250 fs/read_write.c:738 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xfa/0xfa0 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fe8b818eec9 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 a8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007fe8b9060038 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 00007fe8b83e5fa0 RCX: 00007fe8b818eec9 RDX: 0000000000000008 RSI: 0000200000000080 RDI: 0000000000000003 RBP: 00007fe8b8211f91 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fe8b83e6038 R14: 00007fe8b83e5fa0 R15: 00007ffcc4fee948