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* [syzbot] [wpan?] general protection fault in ieee802154_release_queue
@ 2026-06-29  9:53 syzbot
  0 siblings, 0 replies; only message in thread
From: syzbot @ 2026-06-29  9:53 UTC (permalink / raw)
  To: alex.aring, davem, edumazet, horms, kuba, linux-kernel,
	linux-wpan, miquel.raynal, netdev, pabeni, stefan, syzkaller-bugs

Hello,

syzbot found the following issue on:

HEAD commit:    b85966adbf5d Merge tag 'net-next-7.2' of git://git.kernel...
git tree:       net-next
console output: https://syzkaller.appspot.com/x/log.txt?x=17ac7046580000
kernel config:  https://syzkaller.appspot.com/x/.config?x=9a9f723a32776544
dashboard link: https://syzkaller.appspot.com/bug?extid=36256deb69a588e9290e
compiler:       Debian clang version 22.1.6 (++20260514074242+fc4aad7b5db3-1~exp1~20260514074407.73), Debian LLD 22.1.6

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

Downloadable assets:
disk image: https://storage.googleapis.com/syzbot-assets/d65306d96573/disk-b85966ad.raw.xz
vmlinux: https://storage.googleapis.com/syzbot-assets/ef43139aab0e/vmlinux-b85966ad.xz
kernel image: https://storage.googleapis.com/syzbot-assets/26d4d1ab67c3/bzImage-b85966ad.xz

IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+36256deb69a588e9290e@syzkaller.appspotmail.com

Oops: general protection fault, probably for non-canonical address 0xfbd59c0000000043: 0000 [#1] SMP KASAN PTI
KASAN: maybe wild-memory-access in range [0xdead000000000218-0xdead00000000021f]
CPU: 1 UID: 0 PID: 15064 Comm: syz.4.2289 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026
RIP: 0010:ieee802154_wake_queue net/mac802154/util.c:34 [inline]
RIP: 0010:ieee802154_release_queue+0x1b0/0x380 net/mac802154/util.c:83
Code: 42 80 3c 30 00 74 08 4c 89 e7 e8 8b f4 d0 f6 4d 8b 2c 24 4d 39 e5 0f 84 d6 00 00 00 4d 8d bd 18 01 00 00 4c 89 f8 48 c1 e8 03 <42> 80 3c 30 00 74 08 4c 89 ff e8 61 f4 d0 f6 49 8b 2f 48 85 ed 74
RSP: 0018:ffffc90005f3f0d0 EFLAGS: 00010802
RAX: 1bd5a00000000043 RBX: ffff88802a41a760 RCX: 0000000000080000
RDX: ffffc90007f8c000 RSI: 000000000001e208 RDI: 000000000001e209
RBP: ffff88802a43c018 R08: ffffffff903116f7 R09: 1ffffffff20622de
R10: dffffc0000000000 R11: fffffbfff20622df R12: ffff88802a41a770
R13: dead000000000100 R14: dffffc0000000000 R15: dead000000000218
FS:  00007f6a783b06c0(0000) GS:ffff88812537c000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f8924187cc0 CR3: 00000000a6c7a000 CR4: 00000000003526f0
Call Trace:
 <TASK>
 ieee802154_xmit_complete+0x11d/0x290 net/mac802154/util.c:140
 hwsim_hw_xmit+0x1571/0x1620 drivers/net/ieee802154/mac802154_hwsim.c:288
 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:5387 [inline]
 netdev_start_xmit include/linux/netdevice.h:5396 [inline]
 xmit_one net/core/dev.c:3889 [inline]
 dev_hard_start_xmit+0x2cd/0x830 net/core/dev.c:3905
 sch_direct_xmit+0x257/0x4c0 net/sched/sch_generic.c:372
 __dev_xmit_skb net/core/dev.c:4211 [inline]
 __dev_queue_xmit+0x1754/0x37f0 net/core/dev.c:4833
 dev_queue_xmit include/linux/netdevice.h:3436 [inline]
 dgram_sendmsg+0x709/0xe30 net/ieee802154/socket.c:689
 sock_sendmsg_nosec net/socket.c:775 [inline]
 __sock_sendmsg net/socket.c:790 [inline]
 ____sys_sendmsg+0x9b9/0xa20 net/socket.c:2684
 ___sys_sendmsg+0x2a5/0x360 net/socket.c:2738
 __sys_sendmmsg+0x273/0x4d0 net/socket.c:2827
 __do_sys_sendmmsg net/socket.c:2854 [inline]
 __se_sys_sendmmsg net/socket.c:2851 [inline]
 __x64_sys_sendmmsg+0xa0/0xc0 net/socket.c:2851
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0x174/0x580 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f6a7759ce59
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:00007f6a783b0028 EFLAGS: 00000246 ORIG_RAX: 0000000000000133
RAX: ffffffffffffffda RBX: 00007f6a77815fa0 RCX: 00007f6a7759ce59
RDX: 0000000004000050 RSI: 00002000000196c0 RDI: 000000000000000d
RBP: 00007f6a77632e6f R08: 0000000000000000 R09: 0000000000000000
R10: 000000000400c010 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f6a77816038 R14: 00007f6a77815fa0 R15: 00007ffe3e47cbf8
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:ieee802154_wake_queue net/mac802154/util.c:34 [inline]
RIP: 0010:ieee802154_release_queue+0x1b0/0x380 net/mac802154/util.c:83
Code: 42 80 3c 30 00 74 08 4c 89 e7 e8 8b f4 d0 f6 4d 8b 2c 24 4d 39 e5 0f 84 d6 00 00 00 4d 8d bd 18 01 00 00 4c 89 f8 48 c1 e8 03 <42> 80 3c 30 00 74 08 4c 89 ff e8 61 f4 d0 f6 49 8b 2f 48 85 ed 74
RSP: 0018:ffffc90005f3f0d0 EFLAGS: 00010802
RAX: 1bd5a00000000043 RBX: ffff88802a41a760 RCX: 0000000000080000
RDX: ffffc90007f8c000 RSI: 000000000001e208 RDI: 000000000001e209
RBP: ffff88802a43c018 R08: ffffffff903116f7 R09: 1ffffffff20622de
R10: dffffc0000000000 R11: fffffbfff20622df R12: ffff88802a41a770
R13: dead000000000100 R14: dffffc0000000000 R15: dead000000000218
FS:  00007f6a783b06c0(0000) GS:ffff88812537c000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f8924187cc0 CR3: 00000000a6c7a000 CR4: 00000000003526f0
----------------
Code disassembly (best guess):
   0:	42 80 3c 30 00       	cmpb   $0x0,(%rax,%r14,1)
   5:	74 08                	je     0xf
   7:	4c 89 e7             	mov    %r12,%rdi
   a:	e8 8b f4 d0 f6       	call   0xf6d0f49a
   f:	4d 8b 2c 24          	mov    (%r12),%r13
  13:	4d 39 e5             	cmp    %r12,%r13
  16:	0f 84 d6 00 00 00    	je     0xf2
  1c:	4d 8d bd 18 01 00 00 	lea    0x118(%r13),%r15
  23:	4c 89 f8             	mov    %r15,%rax
  26:	48 c1 e8 03          	shr    $0x3,%rax
* 2a:	42 80 3c 30 00       	cmpb   $0x0,(%rax,%r14,1) <-- trapping instruction
  2f:	74 08                	je     0x39
  31:	4c 89 ff             	mov    %r15,%rdi
  34:	e8 61 f4 d0 f6       	call   0xf6d0f49a
  39:	49 8b 2f             	mov    (%r15),%rbp
  3c:	48 85 ed             	test   %rbp,%rbp
  3f:	74                   	.byte 0x74


---
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2026-06-29  9:53 [syzbot] [wpan?] general protection fault in ieee802154_release_queue syzbot

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