syzbot


WARNING in kcov_remote_start (6)

Status: upstream: reported on 2024/11/04 21:25
Subsystems: wireless
[Documentation on labels]
Reported-by: syzbot+3f51ad7ac3ae57a6fdcc@syzkaller.appspotmail.com
First crash: 20d, last: 1d12h
Discussions (1)
Title Replies (including bot) Last reply
[syzbot] [wireless?] WARNING in kcov_remote_start (6) 0 (1) 2024/11/04 21:25
Similar bugs (6)
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
linux-5.15 WARNING in kcov_remote_start 2 14d 49d 0/3 upstream: reported on 2024/10/02 09:28
upstream WARNING in kcov_remote_start (4) usb 107983 133d 164d 26/28 fixed on 2024/07/10 08:24
upstream WARNING in kcov_remote_start (2) usb C 1153 1905d 1905d 0/28 closed as invalid on 2019/09/04 14:27
upstream WARNING in kcov_remote_start (5) wireless 4243 30d 129d 28/28 fixed on 2024/10/22 14:56
upstream WARNING in kcov_remote_start (3) usb 265513 168d 237d 25/28 fixed on 2024/06/05 13:52
upstream WARNING in kcov_remote_start usb C 655 1905d 1905d 0/28 closed as invalid on 2019/09/03 16:37

Sample crash report:
------------[ cut here ]------------
WARNING: CPU: 0 PID: 6079 at kernel/kcov.c:872 kcov_remote_start+0xfd/0x6e0 kernel/kcov.c:872
Modules linked in:
CPU: 0 UID: 0 PID: 6079 Comm: syz.3.53 Not tainted 6.12.0-syzkaller-00971-g158f238aa69d #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/30/2024
RIP: 0010:kcov_remote_start+0xfd/0x6e0 kernel/kcov.c:872
Code: 65 4c 8b 3d 15 44 76 7e 4d 89 7c 24 28 8b 95 f8 15 00 00 65 8b 05 0b 44 76 7e a9 00 01 ff 00 75 53 81 e2 ff ff ff bf 74 4b 90 <0f> 0b 90 e8 fb 43 98 09 44 8b 1d 04 a0 f5 18 89 c0 48 03 1c c5 80
RSP: 0018:ffffc90003e37480 EFLAGS: 00010002
RAX: 0000000080000200 RBX: 000000000002d648 RCX: 0000000000000001
RDX: 0000000000000002 RSI: ffffffff8b6cd4a0 RDI: ffffffff8bd1d2c0
RBP: ffff88801fbb2440 R08: 0000000000000000 R09: fffffbfff2dc7196
R10: ffffffff96e38cb7 R11: 0000000000000028 R12: ffff8880b862d648
R13: 0000000000000200 R14: 0000000000000000 R15: ffff88801fbb2440
FS:  00007fc04081a6c0(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020032000 CR3: 000000007a76c000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 kcov_remote_start_common include/linux/kcov.h:50 [inline]
 ieee80211_rx_list+0x470/0x2e90 net/mac80211/rx.c:5444
 ieee80211_rx_napi+0xdd/0x400 net/mac80211/rx.c:5485
 ieee80211_rx include/net/mac80211.h:5138 [inline]
 ieee80211_handle_queued_frames+0xd5/0x130 net/mac80211/main.c:441
 ieee80211_stop_device+0x32/0x110 net/mac80211/util.c:1587
 ieee80211_do_stop+0x1a1e/0x2520 net/mac80211/iface.c:721
 ieee80211_stop+0x11e/0x6b0 net/mac80211/iface.c:780
 __dev_close_many+0x1c5/0x310 net/core/dev.c:1560
 dev_close_many+0x24c/0x6a0 net/core/dev.c:1585
 dev_close net/core/dev.c:1611 [inline]
 dev_close+0x181/0x230 net/core/dev.c:1605
 cfg80211_shutdown_all_interfaces+0x9a/0x200 net/wireless/core.c:280
 cfg80211_rfkill_set_block net/wireless/core.c:312 [inline]
 cfg80211_rfkill_set_block+0x35/0x50 net/wireless/core.c:304
 rfkill_set_block+0x203/0x560 net/rfkill/core.c:346
 rfkill_fop_write+0x2ce/0x570 net/rfkill/core.c:1301
 vfs_write+0x24c/0x1150 fs/read_write.c:677
 ksys_write+0x207/0x250 fs/read_write.c:731
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fc03f97e759
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:00007fc04081a038 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007fc03fb36130 RCX: 00007fc03f97e759
RDX: 0000000000000008 RSI: 0000000020000080 RDI: 0000000000000003
RBP: 00007fc03f9f175e R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007fc03fb36130 R15: 00007ffdfa3e4b48
 </TASK>

Crashes (10):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2024/11/19 18:21 upstream 158f238aa69d 571351cb .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-selinux-root WARNING in kcov_remote_start
2024/11/12 23:29 upstream 3022e9d00ebe 75bb1b32 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root WARNING in kcov_remote_start
2024/11/03 07:56 upstream 3e5e6c9900c3 f00eed24 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-smack-root WARNING in kcov_remote_start
2024/11/03 06:18 upstream 3e5e6c9900c3 f00eed24 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-smack-root WARNING in kcov_remote_start
2024/11/03 04:54 upstream 3e5e6c9900c3 f00eed24 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-selinux-root WARNING in kcov_remote_start
2024/11/15 09:59 upstream cfaaa7d010d1 f6ede3a3 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-386 WARNING in kcov_remote_start
2024/11/13 08:14 upstream 3022e9d00ebe 62026c85 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-386 WARNING in kcov_remote_start
2024/11/08 09:31 upstream 906bd684e4b1 179b040e .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-386 WARNING in kcov_remote_start
2024/11/03 14:43 net b2183187c5fd f00eed24 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-net-this-kasan-gce WARNING in kcov_remote_start
2024/10/31 21:14 linux-next f9f24ca362a4 96eb609f .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root WARNING in kcov_remote_start
* Struck through repros no longer work on HEAD.