------------[ cut here ]------------ WARNING: CPU: 1 PID: 22103 at kernel/kcov.c:872 kcov_remote_start+0x542/0x7d0 kernel/kcov.c:872 Modules linked in: CPU: 1 UID: 0 PID: 22103 Comm: syz.3.3162 Not tainted 6.13.0-rc5-syzkaller-00163-gab75170520d4 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 RIP: 0010:kcov_remote_start+0x542/0x7d0 kernel/kcov.c:872 Code: 4c 89 ff be 03 00 00 00 e8 eb c8 22 03 e9 04 fb ff ff e8 61 38 29 0a 41 f7 c6 00 02 00 00 0f 84 f2 fa ff ff e9 7f fc ff ff 90 <0f> 0b 90 e8 36 55 29 0a 89 c0 48 c7 c7 e8 d4 02 00 48 03 3c c5 50 RSP: 0018:ffffc90003637230 EFLAGS: 00010002 RAX: 0000000080000200 RBX: ffff88802642da00 RCX: 0000000000000002 RDX: dffffc0000000000 RSI: ffffffff8c0aaae0 RDI: ffffffff8c5fb0e0 RBP: 0000000000000000 R08: ffffffff942a48ff R09: 1ffffffff285491f R10: dffffc0000000000 R11: fffffbfff2854920 R12: ffffffff819f8dc7 R13: dffffc0000000000 R14: 0000000000000246 R15: ffff8880b872d4e8 FS: 0000000000000000(0000) GS:ffff8880b8700000(0063) knlGS:00000000f50beb40 CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 CR2: 000000005696a4c0 CR3: 000000006a4d0000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 000000000000000e DR6: 00000000ffff0ff0 DR7: 0000000000000400 Call Trace: <TASK> kcov_remote_start_common include/linux/kcov.h:50 [inline] ieee80211_rx_list+0x536/0x3810 net/mac80211/rx.c:5451 ieee80211_rx_napi+0x18a/0x3c0 net/mac80211/rx.c:5492 ieee80211_rx include/net/mac80211.h:5166 [inline] ieee80211_handle_queued_frames+0xe7/0x1e0 net/mac80211/main.c:441 ieee80211_stop_device+0x3f/0xf0 net/mac80211/util.c:1571 ieee80211_do_stop+0x1db1/0x2370 net/mac80211/iface.c:722 ieee80211_stop+0x436/0x4a0 net/mac80211/iface.c:781 __dev_close_many+0x219/0x300 net/core/dev.c:1560 dev_close_many+0x24e/0x4c0 net/core/dev.c:1585 dev_close+0x1c0/0x2c0 net/core/dev.c:1611 cfg80211_shutdown_all_interfaces+0xbb/0x1d0 net/wireless/core.c:280 cfg80211_rfkill_set_block+0x2d/0x50 net/wireless/core.c:312 rfkill_set_block+0x1f1/0x440 net/rfkill/core.c:346 rfkill_fop_write+0x5b8/0x790 net/rfkill/core.c:1301 vfs_write+0x2a3/0xd30 fs/read_write.c:677 ksys_write+0x18f/0x2b0 fs/read_write.c:731 do_syscall_32_irqs_on arch/x86/entry/common.c:165 [inline] __do_fast_syscall_32+0xb4/0x110 arch/x86/entry/common.c:386 do_fast_syscall_32+0x34/0x80 arch/x86/entry/common.c:411 entry_SYSENTER_compat_after_hwframe+0x84/0x8e RIP: 0023:0xf70ed579 Code: b8 01 10 06 03 74 b4 01 10 07 03 74 b0 01 10 08 03 74 d8 01 00 00 00 00 00 00 00 00 00 00 00 00 00 51 52 55 89 e5 0f 34 cd 80 <5d> 5a 59 c3 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 RSP: 002b:00000000f50be55c EFLAGS: 00000206 ORIG_RAX: 0000000000000004 RAX: ffffffffffffffda RBX: 000000000000000a RCX: 0000000020000080 RDX: 0000000000000008 RSI: 0000000000000000 RDI: 0000000000000000 RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000206 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 </TASK> ---------------- Code disassembly (best guess), 2 bytes skipped: 0: 10 06 adc %al,(%rsi) 2: 03 74 b4 01 add 0x1(%rsp,%rsi,4),%esi 6: 10 07 adc %al,(%rdi) 8: 03 74 b0 01 add 0x1(%rax,%rsi,4),%esi c: 10 08 adc %cl,(%rax) e: 03 74 d8 01 add 0x1(%rax,%rbx,8),%esi 1e: 00 51 52 add %dl,0x52(%rcx) 21: 55 push %rbp 22: 89 e5 mov %esp,%ebp 24: 0f 34 sysenter 26: cd 80 int $0x80 * 28: 5d pop %rbp <-- trapping instruction 29: 5a pop %rdx 2a: 59 pop %rcx 2b: c3 ret 2c: 90 nop 2d: 90 nop 2e: 90 nop 2f: 90 nop 30: 90 nop 31: 90 nop 32: 90 nop 33: 90 nop 34: 90 nop 35: 90 nop 36: 90 nop 37: 90 nop 38: 90 nop 39: 90 nop 3a: 90 nop 3b: 90 nop 3c: 90 nop 3d: 90 nop