Hello, syzbot found the following issue on: HEAD commit: 3e5e6c9900c3 Merge tag 'nfsd-6.12-3' of git://git.kernel.o.. git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=11406b40580000 kernel config: https://syzkaller.appspot.com/x/.config?x=f527353e21e067e8 dashboard link: https://syzkaller.appspot.com/bug?extid=3f51ad7ac3ae57a6fdcc compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 Unfortunately, I don't have any reproducer for this issue yet. Downloadable assets: disk image: https://storage.googleapis.com/syzbot-assets/3c9dd6858e45/disk-3e5e6c99.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/4d49c920af4f/vmlinux-3e5e6c99.xz kernel image: https://storage.googleapis.com/syzbot-assets/9905ad94dc22/bzImage-3e5e6c99.xz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+3f51ad7ac3ae57a6fdcc@xxxxxxxxxxxxxxxxxxxxxxxxx netdevsim netdevsim4 netdevsim1: unset [1, 0] type 2 family 0 port 6081 - 0 netdevsim netdevsim4 netdevsim2: unset [1, 0] type 2 family 0 port 6081 - 0 netdevsim netdevsim4 netdevsim3: unset [1, 0] type 2 family 0 port 6081 - 0 ------------[ cut here ]------------ WARNING: CPU: 0 PID: 16141 at kernel/kcov.c:872 kcov_remote_start+0x542/0x7d0 kernel/kcov.c:872 Modules linked in: CPU: 0 UID: 0 PID: 16141 Comm: syz.4.2741 Not tainted 6.12.0-rc5-syzkaller-00308-g3e5e6c9900c3 #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 9b df 1f 03 e9 04 fb ff ff e8 d1 af 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 06 cd 29 0a 89 c0 48 c7 c7 c0 d4 02 00 48 03 3c c5 50 RSP: 0018:ffffc9000d826610 EFLAGS: 00010002 RAX: 0000000080000200 RBX: ffff888033771e00 RCX: 0000000000000002 RDX: dffffc0000000000 RSI: ffffffff8c0adc40 RDI: ffffffff8c603460 RBP: 0000000000000000 R08: ffffffff9429786f R09: 1ffffffff2852f0d R10: dffffc0000000000 R11: fffffbfff2852f0e R12: ffffffff8194e367 R13: ffff888025389780 R14: 0000000000000246 R15: ffff8880b862d4c0 FS: 00007ff44c8056c0(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fdf652656c0 CR3: 000000001fed8000 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+0x799/0x3780 net/mac80211/rx.c:5444 ieee80211_rx_napi+0x18a/0x3c0 net/mac80211/rx.c:5485 ieee80211_rx include/net/mac80211.h:5138 [inline] ieee80211_handle_queued_frames+0xe7/0x1e0 net/mac80211/main.c:441 ieee80211_stop_device+0x3f/0xf0 net/mac80211/util.c:1587 ieee80211_do_stop+0x1cb5/0x2300 net/mac80211/iface.c:721 ieee80211_stop+0x436/0x4a0 net/mac80211/iface.c:780 __dev_close_many+0x219/0x300 net/core/dev.c:1560 __dev_close net/core/dev.c:1572 [inline] __dev_change_flags+0x30e/0x6f0 net/core/dev.c:8843 dev_change_flags+0x8b/0x1a0 net/core/dev.c:8917 do_setlink+0xcd0/0x41f0 net/core/rtnetlink.c:2929 rtnl_group_changelink net/core/rtnetlink.c:3476 [inline] __rtnl_newlink net/core/rtnetlink.c:3735 [inline] rtnl_newlink+0x1119/0x20a0 net/core/rtnetlink.c:3772 rtnetlink_rcv_msg+0x73f/0xcf0 net/core/rtnetlink.c:6675 netlink_rcv_skb+0x1e3/0x430 net/netlink/af_netlink.c:2551 netlink_unicast_kernel net/netlink/af_netlink.c:1331 [inline] netlink_unicast+0x7f6/0x990 net/netlink/af_netlink.c:1357 netlink_sendmsg+0x8e4/0xcb0 net/netlink/af_netlink.c:1901 sock_sendmsg_nosec net/socket.c:729 [inline] __sock_sendmsg+0x221/0x270 net/socket.c:744 ____sys_sendmsg+0x52a/0x7e0 net/socket.c:2607 ___sys_sendmsg net/socket.c:2661 [inline] __sys_sendmsg+0x292/0x380 net/socket.c:2690 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7ff44b97e719 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:00007ff44c805038 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00007ff44bb35f80 RCX: 00007ff44b97e719 RDX: 0000000000000000 RSI: 0000000020000040 RDI: 0000000000000003 RBP: 00007ff44b9f132e R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007ff44bb35f80 R15: 00007fffdca94ea8 </TASK> --- This report is generated by a bot. It may contain errors. See https://goo.gl/tpsmEJ for more information about syzbot. syzbot engineers can be reached at syzkaller@xxxxxxxxxxxxxxxx. syzbot will keep track of this issue. See: https://goo.gl/tpsmEJ#status for how to communicate with syzbot. If the report is already addressed, let syzbot know by replying with: #syz fix: exact-commit-title If you want to overwrite report's subsystems, reply with: #syz set subsystems: new-subsystem (See the list of subsystem names on the web dashboard) If the report is a duplicate of another one, reply with: #syz dup: exact-subject-of-another-report If you want to undo deduplication, reply with: #syz undup
