netdev - INFO: task hung in nl802154_pre

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Date:   Tue, 11 Jan 2022 11:01:03 +0800
From:   cruise k <cruise4k@...il.com>
To:     Alexander Aring <alex.aring@...il.com>,
        Stefan Schmidt <stefan@...enfreihafen.org>,
        "David S. Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>, linux-wpan@...r.kernel.org,
        netdev@...r.kernel.org, linux-kernel@...r.kernel.org
Cc:     sunhao.th@...il.com
Subject: INFO: task hung in nl802154_pre_doit

Hi,

Syzkaller found the following issue:

HEAD commit: 75acfdb Linux 5.16-rc8
git tree: upstream
console output: https://pastebin.com/raw/AzAMX5zz
kernel config: https://pastebin.com/raw/XsnKfdRt

And hope the report log can help you.

[ 1251.721354][   T59] INFO: task syz-executor.0:2134 blocked for more
than 143 seconds.
[ 1251.722724][   T59]       Not tainted 5.16.0-rc8+ #10
[ 1251.723664][   T59] "echo 0 >
/proc/sys/kernel/hung_task_timeout_secs" disables this message.
[ 1251.725148][   T59] task:syz-executor.0  state:D stack:27536 pid:
2134 ppid: 13069 flags:0x00000004
[ 1251.726742][   T59] Call Trace:
[ 1251.727272][   T59]  <TASK>
[ 1251.727788][   T59]  __schedule+0xcd9/0x2550
[ 1251.728512][   T59]  ? io_schedule_timeout+0x150/0x150
[ 1251.731002][   T59]  schedule+0xd2/0x260
[ 1251.731762][   T59]  schedule_preempt_disabled+0xf/0x20
[ 1251.732627][   T59]  __mutex_lock+0xc48/0x1610
[ 1251.733367][   T59]  ? nl802154_pre_doit+0x645/0xd30
[ 1251.734194][   T59]  ? mutex_lock_io_nested+0x1410/0x1410
[ 1251.735387][   T59]  ? __nla_validate_parse+0x2df/0x2400
[ 1251.736727][   T59]  ? nla_get_range_signed+0x520/0x520
[ 1251.737977][   T59]  ? rcu_read_lock_sched_held+0x9c/0xd0
[ 1254.756569][ T3364] lowmem_reserve[]: 0 0 852 852 852
[ 1254.757520][ T3364] Node 1 Normal free:36116kB boost:0kB
min:24292kB low:30364kB high:36436kB reserved_highatomic:12288KB
active_anon:15552kB inactive_anon:191888kB active_file:0kB
inactive_file:56kB unevictable:1536kB writepending:0kB
present:1048576kB managed:872480kB mlocked:0kB bounce:0kB
free_pcp:4952kB local_pcp:776kB free_cma:0kB
[ 1254.852260][ T2256] Node 0 DMA free:6572kB boost:2048kB min:2472kB
low:2576kB high:2680kB reserved_highatomic:0KB active_anon:12kB
inactive_anon:4636kB active_file:0kB inactive_file:0kB unevictable:0kB
writepending:0kB present:15992kB managed:15360kB mlocked:0kB
bounce:0kB free_pcp:8kB local_pcp:8kB free_cma:0kB
[ 1254.856691][ T2256] lowmem_reserve[]: 0 1333 1333 1333 1333
[ 1254.857666][ T2256] Node 0 DMA32 free:98544kB boost:85540kB
min:123560kB low:133064kB high:142568kB reserved_highatomic:16384KB
active_anon:10888kB inactive_anon:467648kB active_file:4kB
inactive_file:1424kB unevictable:1536kB writepending:0kB
present:2080768kB managed:1372868kB mlocked:0kB bounce:0kB
free_pcp:4416kB local_pcp:316kB free_cma:0kB
[ 1255.151925][   T59]  ? nl802154_pre_doit+0x645/0xd30
[ 1255.152819][   T59]  ? rtnl_lock+0x5/0x20
[ 1255.153500][   T59]  nl802154_pre_doit+0x645/0xd30
[ 1255.154329][   T59]  ? __nla_parse+0x3d/0x50
[ 1255.155330][   T59]  ? nl802154_dump_llsec_dev+0xba0/0xba0
[ 1255.156224][   T59]  ? write_comp_data+0x1c/0x70
[ 1255.157031][   T59]  ? __sanitizer_cov_trace_pc+0x1a/0x40
[ 1255.158010][   T59]  ? genl_family_rcv_msg_attrs_parse.isra.0+0x1ae/0x280
[ 1255.159174][   T59]  ? nl802154_dump_llsec_dev+0xba0/0xba0
[ 1258.792471][ T1340] ieee802154 phy1 wpan1: encryption failed: -22
[ 1258.882579][ T3364] lowmem_reserve[]: 0 0 0 0 0
[ 1260.285180][   T59]  genl_family_rcv_msg_doit.isra.0+0x1e4/0x330
[ 1260.286249][   T59]  ? genl_start+0x670/0x670
[ 1260.287076][   T59]  ? __sanitizer_cov_trace_pc+0x1a/0x40
[ 1260.287968][   T59]  ? __radix_tree_lookup+0x21b/0x2b0
[ 1260.288832][   T59]  ? __sanitizer_cov_trace_pc+0x1a/0x40
[ 1260.997983][ T2256] lowmem_reserve[]: 0 0 0 0 0
[ 1260.998899][ T2256] Node 1 DMA32 free:21864kB boost:0kB min:27368kB
low:34208kB high:41048kB reserved_highatomic:0KB active_anon:0kB
inactive_anon:66040kB active_file:80kB inactive_file:0kB
unevictable:0kB writepending:0kB present:1048444kB managed:982908kB
mlocked:0kB bounce:0kB free_pcp:4064kB local_pcp:1984kB free_cma:0kB