[syzbot] [wpan?] WARNING in hwsim_hw_xmit

[syzbot] [wpan?] WARNING in hwsim_hw_xmit

[syzbot]

Hello,

syzbot found the following issue on:

HEAD commit:    fd73f4a66598 Linux 7.3-rc3
git tree:       upstream
console output: https://syzkaller.appspot.com/x/log.txt?x=15319905580000
kernel config:  https://syzkaller.appspot.com/x/.config?x=b454dc6b1b7acd30
dashboard link: https://syzkaller.appspot.com/bug?extid=adb0bf16414b8bb2d799
compiler:       Debian clang version 22.1.8 (++20260613092233+e80beda6e255-1~exp1~20260613092250.77), Debian LLD 22.1.8

Unfortunately, I don't have any reproducer for this issue yet.

Downloadable assets:
disk image: https://storage.googleapis.com/syzbot-assets/03bdb0f533e9/disk-fd73f4a6.raw.xz
vmlinux: https://storage.googleapis.com/syzbot-assets/b8afef97d54e/vmlinux-fd73f4a6.xz
kernel image: https://storage.googleapis.com/syzbot-assets/c5ec38325318/bzImage-fd73f4a6.xz

IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+adb0bf16414b8bb2d799@syzkaller.appspotmail.com

------------[ cut here ]------------
current_phy->suspended
WARNING: drivers/net/ieee802154/mac802154_hwsim.c:266 at hwsim_hw_xmit+0x1606/0x1630 drivers/net/ieee802154/mac802154_hwsim.c:266, CPU#0: syz.5.2158/11621
Modules linked in:
CPU: 0 UID: 0 PID: 11621 Comm: syz.5.2158 Tainted: G             L      syzkaller #0 PREEMPT_{RT,(full)} 
Tainted: [L]=SOFTLOCKUP
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/08/2026
RIP: 0010:hwsim_hw_xmit+0x1606/0x1630 drivers/net/ieee802154/mac802154_hwsim.c:266
Code: c6 05 af 7a e6 08 01 48 c7 c7 a0 ae 0c 8c be 0d 01 00 00 48 c7 c2 40 af 0c 8c e8 15 fe ec fa e9 e8 eb ff ff e8 4b 78 11 fb 90 <0f> 0b 90 e9 d2 ea ff ff 89 d9 80 e1 07 38 c1 0f 8c b7 ea ff ff 48
RSP: 0018:ffffc90004a07280 EFLAGS: 00010283
RAX: ffffffff86b51de5 RBX: ffff88802592d018 RCX: 0000000000080000
RDX: ffffc9001660b000 RSI: 00000000000001b2 RDI: 00000000000001b3
RBP: ffffc90004a073f8 R08: ffff88802592c823 R09: 1ffff11004b25904
R10: dffffc0000000000 R11: ffffffff86b507e0 R12: dffffc0000000000
R13: ffff88802592c900 R14: ffff88802592cf80 R15: 1ffff11004b25920
FS:  00007f56c49766c0(0000) GS:ffff888125bcb000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b2d91fff8 CR3: 000000004052a000 CR4: 00000000003526f0
Call Trace:
 <TASK>
 drv_xmit_async net/mac802154/driver-ops.h:16 [inline]
 ieee802154_tx+0x26d/0x510 net/mac802154/tx.c:89
 ieee802154_hot_tx net/mac802154/tx.c:207 [inline]
 ieee802154_subif_start_xmit+0x110/0x190 net/mac802154/tx.c:239
 __netdev_start_xmit include/linux/netdevice.h:5429 [inline]
 netdev_start_xmit include/linux/netdevice.h:5438 [inline]
 xmit_one net/core/dev.c:3937 [inline]
 dev_hard_start_xmit+0x2df/0x870 net/core/dev.c:3953
 sch_direct_xmit+0x257/0x4c0 net/sched/sch_generic.c:372
 __dev_xmit_skb net/core/dev.c:4262 [inline]
 __dev_queue_xmit+0x16ce/0x3880 net/core/dev.c:4884
 dev_queue_xmit include/linux/netdevice.h:3461 [inline]
 raw_sendmsg+0x4a2/0x9c0 net/ieee802154/socket.c:299
 sock_sendmsg_nosec+0x13a/0x180 net/socket.c:800
 __sock_sendmsg net/socket.c:815 [inline]
 ____sys_sendmsg+0x565/0x870 net/socket.c:2713
 ___sys_sendmsg+0x2a5/0x360 net/socket.c:2767
 __sys_sendmsg net/socket.c:2799 [inline]
 __do_sys_sendmsg net/socket.c:2804 [inline]
 __se_sys_sendmsg net/socket.c:2802 [inline]
 __x64_sys_sendmsg+0x1b7/0x290 net/socket.c:2802
 do_syscall_x64 arch/x86/entry/syscall_64.c:61 [inline]
 do_syscall_64+0x166/0x520 arch/x86/entry/syscall_64.c:84
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f56c671e159
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 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 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f56c4976028 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007f56c69a5fa0 RCX: 00007f56c671e159
RDX: 0000000024004014 RSI: 0000200000000080 RDI: 0000000000000005
RBP: 00007f56c67b503b R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f56c69a6038 R14: 00007f56c69a5fa0 R15: 00007ffd99396d38
 </TASK>


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