WARNING in cfg802154_switch_netns

Status: upstream: reported C repro on 2025/02/10 10:37
Bug presence: origin:upstream
[Documentation on labels]
Reported-by: syzbot+fc92a0b1437d576a483d@syzkaller.appspotmail.com
First crash: 531d, last: 21d
Fix bisection: failed (error log, bisect log)
  
▶ ▼ Bug presence (1)
Date Name Commit Repro Result
2025/03/12 upstream (ToT) 0fed89a961ea C [report] WARNING in cfg802154_switch_netns
▶ ▼ Similar bugs (3)
Kernel Title Rank 🛈 Repro Cause bisect Fix bisect Count Last Reported Patched Status
upstream WARNING in cfg802154_switch_netns wpan -1 12 870d 909d 0/29 auto-obsoleted due to no activity on 2024/05/17 00:34
upstream WARNING in cfg802154_switch_netns (3) wpan -1 C error error 23 53d 599d 0/29 upstream: reported C repro on 2024/12/04 09:32
upstream WARNING in cfg802154_switch_netns (2) wpan -1 1 715d 711d 0/29 auto-obsoleted due to no activity on 2024/11/17 17:31
▶ ▼ Last patch testing requests (10)
Created Duration User Patch Repo Result
2026/07/05 02:46 16m retest repro linux-5.15.y report log
2026/07/05 02:46 25m retest repro linux-5.15.y report log
2026/06/09 20:33 17m retest repro linux-5.15.y report log
2026/04/23 05:07 15m retest repro linux-5.15.y report log
2026/04/23 05:07 15m retest repro linux-5.15.y report log
2026/03/20 19:15 10m retest repro linux-5.15.y report log
2026/02/11 22:46 19m retest repro linux-5.15.y report log
2026/02/11 22:46 11m retest repro linux-5.15.y report log
2026/01/09 09:37 11m retest repro linux-5.15.y report log
2025/12/03 18:15 16m retest repro linux-5.15.y report log

Sample crash report:
 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142
 do_el0_svc+0x58/0x14c arch/arm64/kernel/syscall.c:181
 el0_svc+0x7c/0x1f0 arch/arm64/kernel/entry-common.c:608
 el0t_64_sync_handler+0x84/0xe4 arch/arm64/kernel/entry-common.c:626
 el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584
------------[ cut here ]------------
WARNING: CPU: 0 PID: 4019 at net/ieee802154/core.c:236 cfg802154_switch_netns+0x360/0x368
Modules linked in:
CPU: 0 PID: 4019 Comm: syz-executor309 Not tainted 5.15.178-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024
pstate: 80400005 (Nzcv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--)
pc : cfg802154_switch_netns+0x360/0x368
lr : cfg802154_switch_netns+0x35c/0x368 net/ieee802154/core.c:236
sp : ffff80001d1a7190
x29: ffff80001d1a7190 x28: ffff0000d66e87b4 x27: ffff80001d1a72a0
x26: dfff800000000000 x25: 1ffff00003a34e80 x24: ffff80001d1a7400
x23: ffff0000cdfb0078 x22: 0000000000000000 x21: ffff0000c9cf8000
x20: ffff0000c96b8600 x19: 00000000fffffff4 x18: 0000000000000001
x17: 0000000000000000 x16: ffff8000084c44a8 x15: 00000000ffffffff
x14: ffff0000caf53680 x13: 0000000000000001 x12: 0000000000000001
x11: 0000000000000000 x10: 0000000000000000 x9 : ffff0000caf53680
x8 : ffff80001182b138 x7 : 0000000000000000 x6 : 0000000000000001
x5 : ffff80001d1a65b8 x4 : 0000000000000100 x3 : ffff80000abf8110
x2 : 0000000000000001 x1 : 00000000fffffff4 x0 : 0000000000000000
Call trace:
 cfg802154_switch_netns+0x360/0x368
 nl802154_wpan_phy_netns+0x130/0x238 net/ieee802154/nl802154.c:1278
 genl_family_rcv_msg_doit net/netlink/genetlink.c:731 [inline]
 genl_family_rcv_msg net/netlink/genetlink.c:775 [inline]
 genl_rcv_msg+0xc18/0x1018 net/netlink/genetlink.c:792
 netlink_rcv_skb+0x20c/0x3b8 net/netlink/af_netlink.c:2489
 genl_rcv+0x38/0x50 net/netlink/genetlink.c:803
 netlink_unicast_kernel net/netlink/af_netlink.c:1311 [inline]
 netlink_unicast+0x664/0x938 net/netlink/af_netlink.c:1337
 netlink_sendmsg+0x844/0xb38 net/netlink/af_netlink.c:1905
 sock_sendmsg_nosec net/socket.c:704 [inline]
 __sock_sendmsg net/socket.c:716 [inline]
 ____sys_sendmsg+0x584/0x870 net/socket.c:2436
 ___sys_sendmsg+0x214/0x294 net/socket.c:2490
 __sys_sendmsg net/socket.c:2519 [inline]
 __do_sys_sendmsg net/socket.c:2528 [inline]
 __se_sys_sendmsg net/socket.c:2526 [inline]
 __arm64_sys_sendmsg+0x1ac/0x25c net/socket.c:2526
 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline]
 invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:52
 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142
 do_el0_svc+0x58/0x14c arch/arm64/kernel/syscall.c:181
 el0_svc+0x7c/0x1f0 arch/arm64/kernel/entry-common.c:608
 el0t_64_sync_handler+0x84/0xe4 arch/arm64/kernel/entry-common.c:626
 el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584
irq event stamp: 15846
hardirqs last  enabled at (15845): [<ffff800011b4c8b8>] __exit_to_kernel_mode arch/arm64/kernel/entry-common.c:81 [inline]
hardirqs last  enabled at (15845): [<ffff800011b4c8b8>] exit_to_kernel_mode+0x100/0x178 arch/arm64/kernel/entry-common.c:91
hardirqs last disabled at (15846): [<ffff800011b49ab0>] el1_dbg+0x24/0x80 arch/arm64/kernel/entry-common.c:396
softirqs last  enabled at (15840): [<ffff8000081b6920>] softirq_handle_end kernel/softirq.c:401 [inline]
softirqs last  enabled at (15840): [<ffff8000081b6920>] handle_softirqs+0xb88/0xdbc kernel/softirq.c:586
softirqs last disabled at (15823): [<ffff8000081b6fb8>] __do_softirq kernel/softirq.c:592 [inline]
softirqs last disabled at (15823): [<ffff8000081b6fb8>] do_softirq_own_stack include/asm-generic/softirq_stack.h:10 [inline]
softirqs last disabled at (15823): [<ffff8000081b6fb8>] invoke_softirq kernel/softirq.c:439 [inline]
softirqs last disabled at (15823): [<ffff8000081b6fb8>] __irq_exit_rcu+0x268/0x4d8 kernel/softirq.c:641
---[ end trace 35650325e2c7c539 ]---

Crashes (4):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2025/02/10 12:43 linux-5.15.y c16c81c81336 ef44b750 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 WARNING in cfg802154_switch_netns
2025/02/10 11:58 linux-5.15.y c16c81c81336 ef44b750 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 WARNING in cfg802154_switch_netns
2025/02/10 11:18 linux-5.15.y c16c81c81336 ef44b750 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 WARNING in cfg802154_switch_netns
2025/02/10 10:37 linux-5.15.y c16c81c81336 ef44b750 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 WARNING in cfg802154_switch_netns
* Struck through repros no longer work on HEAD.