general protection fault in nl802154_del_llsec_dev

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syzbot

unread,
Feb 13, 2021, 6:41:17 AM2/13/21
to syzkaller...@googlegroups.com
Hello,

syzbot found the following issue on:

HEAD commit: 2c8a3fce Linux 4.14.218
git tree: linux-4.14.y
console output: https://syzkaller.appspot.com/x/log.txt?x=17da693cd00000
kernel config: https://syzkaller.appspot.com/x/.config?x=80e596b8b0902d96
dashboard link: https://syzkaller.appspot.com/bug?extid=19b1d17941516aef5dcc

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

IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+19b1d1...@syzkaller.appspotmail.com

kasan: CONFIG_KASAN_INLINE enabled
kasan: GPF could be caused by NULL-ptr deref or user memory access
general protection fault: 0000 [#1] PREEMPT SMP KASAN
Modules linked in:
CPU: 0 PID: 10662 Comm: syz-executor.0 Not tainted 4.14.218-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
task: ffff888079b644c0 task.stack: ffff888097380000
RIP: 0010:nla_len syzkaller/managers/linux-4-14/kernel/./include/net/netlink.h:706 [inline]
RIP: 0010:nla_parse_nested syzkaller/managers/linux-4-14/kernel/./include/net/netlink.h:765 [inline]
RIP: 0010:nl802154_del_llsec_dev+0x13b/0x2e0 syzkaller/managers/linux-4-14/kernel/net/ieee802154/nl802154.c:1783
RSP: 0018:ffff8880973876e0 EFLAGS: 00010246
RAX: dffffc0000000000 RBX: ffff88823a079840 RCX: 0000000000000000
RDX: 0000000000000000 RSI: ffffffff86d94d65 RDI: ffff88823a079958
RBP: 1ffff11012e70ede R08: 0000000000000001 R09: ffff888097387990
R10: ffff8880973876af R11: ffff888079b644c0 R12: ffff8880ab9849c0
R13: ffff8880ab9ccf10 R14: ffffffff886f1d00 R15: ffff8880aba05280
FS: 00007feded120700(0000) GS:ffff8880ba400000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fff5fd2bd4c CR3: 000000009b7ce000 CR4: 00000000001406f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
genl_family_rcv_msg+0x572/0xb20 syzkaller/managers/linux-4-14/kernel/net/netlink/genetlink.c:600
genl_rcv_msg+0xaf/0x140 syzkaller/managers/linux-4-14/kernel/net/netlink/genetlink.c:625
netlink_rcv_skb+0x125/0x390 syzkaller/managers/linux-4-14/kernel/net/netlink/af_netlink.c:2433
genl_rcv+0x24/0x40 syzkaller/managers/linux-4-14/kernel/net/netlink/genetlink.c:636
netlink_unicast_kernel syzkaller/managers/linux-4-14/kernel/net/netlink/af_netlink.c:1287 [inline]
netlink_unicast+0x437/0x610 syzkaller/managers/linux-4-14/kernel/net/netlink/af_netlink.c:1313
netlink_sendmsg+0x62e/0xb80 syzkaller/managers/linux-4-14/kernel/net/netlink/af_netlink.c:1878
sock_sendmsg_nosec syzkaller/managers/linux-4-14/kernel/net/socket.c:646 [inline]
sock_sendmsg+0xb5/0x100 syzkaller/managers/linux-4-14/kernel/net/socket.c:656
___sys_sendmsg+0x6c8/0x800 syzkaller/managers/linux-4-14/kernel/net/socket.c:2062
__sys_sendmsg+0xa3/0x120 syzkaller/managers/linux-4-14/kernel/net/socket.c:2096
SYSC_sendmsg syzkaller/managers/linux-4-14/kernel/net/socket.c:2107 [inline]
SyS_sendmsg+0x27/0x40 syzkaller/managers/linux-4-14/kernel/net/socket.c:2103
do_syscall_64+0x1d5/0x640 syzkaller/managers/linux-4-14/kernel/arch/x86/entry/common.c:292
entry_SYSCALL_64_after_hwframe+0x46/0xbb
RIP: 0033:0x465d99
RSP: 002b:00007feded120188 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 000000000056c008 RCX: 0000000000465d99
RDX: 0000000000008804 RSI: 0000000020000a00 RDI: 0000000000000007
RBP: 00000000004bcf27 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 000000000056c008
R13: 00007ffd5b44273f R14: 00007feded120300 R15: 0000000000022000
Code: 00 00 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 96 01 00 00 48 8b 93 18 01 00 00 48 b8 00 00 00 00 00 fc ff df 48 89 d1 48 c1 e9 03 <0f> b6 0c 01 48 89 d0 83 e0 07 83 c0 01 38 c8 7c 08 84 c9 0f 85
RIP: nla_len syzkaller/managers/linux-4-14/kernel/./include/net/netlink.h:706 [inline] RSP: ffff8880973876e0
RIP: nla_parse_nested syzkaller/managers/linux-4-14/kernel/./include/net/netlink.h:765 [inline] RSP: ffff8880973876e0
RIP: nl802154_del_llsec_dev+0x13b/0x2e0 syzkaller/managers/linux-4-14/kernel/net/ieee802154/nl802154.c:1783 RSP: ffff8880973876e0
---[ end trace aba825317db40314 ]---


---
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 syzk...@googlegroups.com.

syzbot will keep track of this issue. See:
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syzbot

unread,
Feb 13, 2021, 7:00:16 AM2/13/21
to syzkaller...@googlegroups.com
syzbot has found a reproducer for the following issue on:

HEAD commit: 2c8a3fce Linux 4.14.218
git tree: linux-4.14.y
console output: https://syzkaller.appspot.com/x/log.txt?x=13ba4be2d00000
syz repro: https://syzkaller.appspot.com/x/repro.syz?x=170c99f4d00000
C reproducer: https://syzkaller.appspot.com/x/repro.c?x=110d2c98d00000

IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+19b1d1...@syzkaller.appspotmail.com

kasan: CONFIG_KASAN_INLINE enabled
kasan: GPF could be caused by NULL-ptr deref or user memory access
general protection fault: 0000 [#1] PREEMPT SMP KASAN
Modules linked in:
CPU: 0 PID: 7961 Comm: syz-executor023 Not tainted 4.14.218-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
task: ffff8880980a2440 task.stack: ffff8880a6230000
RIP: 0010:nla_len syzkaller/managers/linux-4-14/kernel/./include/net/netlink.h:706 [inline]
RIP: 0010:nla_parse_nested syzkaller/managers/linux-4-14/kernel/./include/net/netlink.h:765 [inline]
RIP: 0010:nl802154_del_llsec_dev+0x13b/0x2e0 syzkaller/managers/linux-4-14/kernel/net/ieee802154/nl802154.c:1783
RSP: 0018:ffff8880a62376e0 EFLAGS: 00010246
RAX: dffffc0000000000 RBX: ffff8880b29807c0 RCX: 0000000000000000
RDX: 0000000000000000 RSI: ffff8880a6237850 RDI: ffff8880b29808d8
RBP: 1ffff11014c46ede R08: 0000000000000001 R09: ffff8880a6237990
R10: ffff8880a62376af R11: ffff8880980a2440 R12: ffff8882382f62c0
R13: ffff8880ab8b9010 R14: ffffffff886f1d00 R15: ffff8880aba5f040
FS: 000000000208e300(0000) GS:ffff8880ba400000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020000408 CR3: 00000000b51ac000 CR4: 00000000001406f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
genl_family_rcv_msg+0x572/0xb20 syzkaller/managers/linux-4-14/kernel/net/netlink/genetlink.c:600
genl_rcv_msg+0xaf/0x140 syzkaller/managers/linux-4-14/kernel/net/netlink/genetlink.c:625
netlink_rcv_skb+0x125/0x390 syzkaller/managers/linux-4-14/kernel/net/netlink/af_netlink.c:2433
genl_rcv+0x24/0x40 syzkaller/managers/linux-4-14/kernel/net/netlink/genetlink.c:636
netlink_unicast_kernel syzkaller/managers/linux-4-14/kernel/net/netlink/af_netlink.c:1287 [inline]
netlink_unicast+0x437/0x610 syzkaller/managers/linux-4-14/kernel/net/netlink/af_netlink.c:1313
netlink_sendmsg+0x62e/0xb80 syzkaller/managers/linux-4-14/kernel/net/netlink/af_netlink.c:1878
sock_sendmsg_nosec syzkaller/managers/linux-4-14/kernel/net/socket.c:646 [inline]
sock_sendmsg+0xb5/0x100 syzkaller/managers/linux-4-14/kernel/net/socket.c:656
___sys_sendmsg+0x6c8/0x800 syzkaller/managers/linux-4-14/kernel/net/socket.c:2062
__sys_sendmsg+0xa3/0x120 syzkaller/managers/linux-4-14/kernel/net/socket.c:2096
SYSC_sendmsg syzkaller/managers/linux-4-14/kernel/net/socket.c:2107 [inline]
SyS_sendmsg+0x27/0x40 syzkaller/managers/linux-4-14/kernel/net/socket.c:2103
do_syscall_64+0x1d5/0x640 syzkaller/managers/linux-4-14/kernel/arch/x86/entry/common.c:292
entry_SYSCALL_64_after_hwframe+0x46/0xbb
RIP: 0033:0x43f959
RSP: 002b:00007ffcfe40d3a8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00000000004004a0 RCX: 000000000043f959
RDX: 0000000000008804 RSI: 0000000020000a00 RDI: 0000000000000006
RBP: 00000000004033c0 R08: 00000000004004a0 R09: 00000000004004a0
R10: 0000000000000006 R11: 0000000000000246 R12: 0000000000403450
R13: 0000000000000000 R14: 00000000004ad018 R15: 00000000004004a0
Code: 00 00 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 96 01 00 00 48 8b 93 18 01 00 00 48 b8 00 00 00 00 00 fc ff df 48 89 d1 48 c1 e9 03 <0f> b6 0c 01 48 89 d0 83 e0 07 83 c0 01 38 c8 7c 08 84 c9 0f 85
RIP: nla_len syzkaller/managers/linux-4-14/kernel/./include/net/netlink.h:706 [inline] RSP: ffff8880a62376e0
RIP: nla_parse_nested syzkaller/managers/linux-4-14/kernel/./include/net/netlink.h:765 [inline] RSP: ffff8880a62376e0
RIP: nl802154_del_llsec_dev+0x13b/0x2e0 syzkaller/managers/linux-4-14/kernel/net/ieee802154/nl802154.c:1783 RSP: ffff8880a62376e0
---[ end trace 38b09e6ea78fc379 ]---

syzbot

unread,
Feb 14, 2021, 10:59:21 PM2/14/21
to syzkaller...@googlegroups.com
Hello,

syzbot found the following issue on:

HEAD commit: 811218ec Linux 4.19.172
git tree: linux-4.19.y
console output: https://syzkaller.appspot.com/x/log.txt?x=11c71098d00000
kernel config: https://syzkaller.appspot.com/x/.config?x=c1cb1d27398c8808
dashboard link: https://syzkaller.appspot.com/bug?extid=be80c228db8f7e6c2330

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

IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+be80c2...@syzkaller.appspotmail.com

general protection fault: 0000 [#1] PREEMPT SMP KASAN
CPU: 0 PID: 12512 Comm: syz-executor.3 Not tainted 4.19.172-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:nla_len syzkaller/managers/linux-4-19/kernel/./include/net/netlink.h:706 [inline]
RIP: 0010:nla_parse_nested syzkaller/managers/linux-4-19/kernel/./include/net/netlink.h:765 [inline]
RIP: 0010:nl802154_del_llsec_dev+0x14e/0x320 syzkaller/managers/linux-4-19/kernel/net/ieee802154/nl802154.c:1783
Code: 00 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 ce 01 00 00 48 8b 93 18 01 00 00 48 b8 00 00 00 00 00 fc ff df 48 89 d1 48 c1 e9 03 <0f> b6 0c 01 48 89 d0 83 e0 07 83 c0 01 38 c8 7c 08 84 c9 0f 85 0b
RSP: 0018:ffff88804e4f7628 EFLAGS: 00010246
RAX: dffffc0000000000 RBX: ffff88823a4680c0 RCX: 0000000000000000
RDX: 0000000000000000 RSI: ffffffff87c508e8 RDI: ffff88823a4681d8
RBP: 1ffff11009c9eec7 R08: 0000000000000000 R09: ffff88804e4f7920
R10: 0000000000000005 R11: 0000000000000000 R12: ffff888238726300
R13: ffff8880ab55d0d0 R14: ffff88823a4680c0 R15: ffffffff89cf57c0
FS: 00007f93718f9700(0000) GS:ffff8880ba000000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000c021b43000 CR3: 0000000045e07000 CR4: 00000000001406f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
genl_family_rcv_msg+0x642/0xc40 syzkaller/managers/linux-4-19/kernel/net/netlink/genetlink.c:602
genl_rcv_msg+0xbf/0x160 syzkaller/managers/linux-4-19/kernel/net/netlink/genetlink.c:627
netlink_rcv_skb+0x160/0x440 syzkaller/managers/linux-4-19/kernel/net/netlink/af_netlink.c:2455
genl_rcv+0x24/0x40 syzkaller/managers/linux-4-19/kernel/net/netlink/genetlink.c:638
netlink_unicast_kernel syzkaller/managers/linux-4-19/kernel/net/netlink/af_netlink.c:1318 [inline]
netlink_unicast+0x4d5/0x690 syzkaller/managers/linux-4-19/kernel/net/netlink/af_netlink.c:1344
netlink_sendmsg+0x6bb/0xc40 syzkaller/managers/linux-4-19/kernel/net/netlink/af_netlink.c:1909
sock_sendmsg_nosec syzkaller/managers/linux-4-19/kernel/net/socket.c:622 [inline]
sock_sendmsg+0xc3/0x120 syzkaller/managers/linux-4-19/kernel/net/socket.c:632
___sys_sendmsg+0x7bb/0x8e0 syzkaller/managers/linux-4-19/kernel/net/socket.c:2115
__sys_sendmsg syzkaller/managers/linux-4-19/kernel/net/socket.c:2153 [inline]
__do_sys_sendmsg syzkaller/managers/linux-4-19/kernel/net/socket.c:2162 [inline]
__se_sys_sendmsg syzkaller/managers/linux-4-19/kernel/net/socket.c:2160 [inline]
__x64_sys_sendmsg+0x132/0x220 syzkaller/managers/linux-4-19/kernel/net/socket.c:2160
do_syscall_64+0xf9/0x620 syzkaller/managers/linux-4-19/kernel/arch/x86/entry/common.c:293
entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x465d99
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 bc ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f93718f9188 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 000000000056bf60 RCX: 0000000000465d99
RDX: 0000000020008800 RSI: 0000000020000600 RDI: 0000000000000004
RBP: 00000000004bcf27 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 000000000056bf60
R13: 00007ffd7492a4af R14: 00007f93718f9300 R15: 0000000000022000
Modules linked in:
---[ end trace 4f11983f3f562caa ]---
RIP: 0010:nla_len syzkaller/managers/linux-4-19/kernel/./include/net/netlink.h:706 [inline]
RIP: 0010:nla_parse_nested syzkaller/managers/linux-4-19/kernel/./include/net/netlink.h:765 [inline]
RIP: 0010:nl802154_del_llsec_dev+0x14e/0x320 syzkaller/managers/linux-4-19/kernel/net/ieee802154/nl802154.c:1783
wlan1: Trigger new scan to find an IBSS to join
Code: 00 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 ce 01 00 00 48 8b 93 18 01 00 00 48 b8 00 00 00 00 00 fc ff df 48 89 d1 48 c1 e9 03 <0f> b6 0c 01 48 89 d0 83 e0 07 83 c0 01 38 c8 7c 08 84 c9 0f 85 0b
RSP: 0018:ffff88804e4f7628 EFLAGS: 00010246
RAX: dffffc0000000000 RBX: ffff88823a4680c0 RCX: 0000000000000000
RDX: 0000000000000000 RSI: ffffffff87c508e8 RDI: ffff88823a4681d8
RBP: 1ffff11009c9eec7 R08: 0000000000000000 R09: ffff88804e4f7920
R10: 0000000000000005 R11: 0000000000000000 R12: ffff888238726300
R13: ffff8880ab55d0d0 R14: ffff88823a4680c0 R15: ffffffff89cf57c0
FS: 00007f93718f9700(0000) GS:ffff8880ba000000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00000000004e1901 CR3: 0000000045e07000 CR4: 00000000001406f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400


syzbot

unread,
Feb 14, 2021, 11:22:17 PM2/14/21
to syzkaller...@googlegroups.com
syzbot has found a reproducer for the following issue on:

HEAD commit: 811218ec Linux 4.19.172
git tree: linux-4.19.y
console output: https://syzkaller.appspot.com/x/log.txt?x=171d57e2d00000
syz repro: https://syzkaller.appspot.com/x/repro.syz?x=162e5e9cd00000
C reproducer: https://syzkaller.appspot.com/x/repro.c?x=10549914d00000

IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+be80c2...@syzkaller.appspotmail.com

kasan: CONFIG_KASAN_INLINE enabled
kasan: GPF could be caused by NULL-ptr deref or user memory access
general protection fault: 0000 [#1] PREEMPT SMP KASAN
CPU: 0 PID: 8104 Comm: syz-executor794 Not tainted 4.19.172-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:nla_len syzkaller/managers/linux-4-19/kernel/./include/net/netlink.h:706 [inline]
RIP: 0010:nla_parse_nested syzkaller/managers/linux-4-19/kernel/./include/net/netlink.h:765 [inline]
RIP: 0010:nl802154_del_llsec_dev+0x14e/0x320 syzkaller/managers/linux-4-19/kernel/net/ieee802154/nl802154.c:1783
Code: 00 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 ce 01 00 00 48 8b 93 18 01 00 00 48 b8 00 00 00 00 00 fc ff df 48 89 d1 48 c1 e9 03 <0f> b6 0c 01 48 89 d0 83 e0 07 83 c0 01 38 c8 7c 08 84 c9 0f 85 0b
RSP: 0018:ffff88808d4f7628 EFLAGS: 00010246
RAX: dffffc0000000000 RBX: ffff88823aa8f7c0 RCX: 0000000000000000
RDX: 0000000000000000 RSI: ffffffff87c508e8 RDI: ffff88823aa8f8d8
RBP: 1ffff11011a9eec7 R08: 0000000000000000 R09: ffff88808d4f7920
R10: 0000000000000005 R11: 0000000000000001 R12: ffff8880ab5ceec0
R13: ffff8880ab56d090 R14: ffff88823aa8f7c0 R15: ffffffff89cf57c0
FS: 000000000056d300(0000) GS:ffff8880ba000000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020000b00 CR3: 00000000b3aec000 CR4: 00000000001406f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
genl_family_rcv_msg+0x642/0xc40 syzkaller/managers/linux-4-19/kernel/net/netlink/genetlink.c:602
genl_rcv_msg+0xbf/0x160 syzkaller/managers/linux-4-19/kernel/net/netlink/genetlink.c:627
netlink_rcv_skb+0x160/0x440 syzkaller/managers/linux-4-19/kernel/net/netlink/af_netlink.c:2455
genl_rcv+0x24/0x40 syzkaller/managers/linux-4-19/kernel/net/netlink/genetlink.c:638
netlink_unicast_kernel syzkaller/managers/linux-4-19/kernel/net/netlink/af_netlink.c:1318 [inline]
netlink_unicast+0x4d5/0x690 syzkaller/managers/linux-4-19/kernel/net/netlink/af_netlink.c:1344
netlink_sendmsg+0x6bb/0xc40 syzkaller/managers/linux-4-19/kernel/net/netlink/af_netlink.c:1909
sock_sendmsg_nosec syzkaller/managers/linux-4-19/kernel/net/socket.c:622 [inline]
sock_sendmsg+0xc3/0x120 syzkaller/managers/linux-4-19/kernel/net/socket.c:632
___sys_sendmsg+0x7bb/0x8e0 syzkaller/managers/linux-4-19/kernel/net/socket.c:2115
__sys_sendmsg syzkaller/managers/linux-4-19/kernel/net/socket.c:2153 [inline]
__do_sys_sendmsg syzkaller/managers/linux-4-19/kernel/net/socket.c:2162 [inline]
__se_sys_sendmsg syzkaller/managers/linux-4-19/kernel/net/socket.c:2160 [inline]
__x64_sys_sendmsg+0x132/0x220 syzkaller/managers/linux-4-19/kernel/net/socket.c:2160
do_syscall_64+0xf9/0x620 syzkaller/managers/linux-4-19/kernel/arch/x86/entry/common.c:293
entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x43f969
Code: 28 c3 e8 5a 14 00 00 66 2e 0f 1f 84 00 00 00 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 c0 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fffdf1eee48 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00000000004004a0 RCX: 000000000043f969
RDX: 0000000020008800 RSI: 0000000020000600 RDI: 0000000000000003
RBP: 00000000004033d0 R08: 0000000000000008 R09: 00000000004004a0
R10: 0000000000000003 R11: 0000000000000246 R12: 0000000000403460
R13: 0000000000000000 R14: 00000000004ad018 R15: 00000000004004a0
Modules linked in:
---[ end trace c5cc933d9ef2cdea ]---
RIP: 0010:nla_len syzkaller/managers/linux-4-19/kernel/./include/net/netlink.h:706 [inline]
RIP: 0010:nla_parse_nested syzkaller/managers/linux-4-19/kernel/./include/net/netlink.h:765 [inline]
RIP: 0010:nl802154_del_llsec_dev+0x14e/0x320 syzkaller/managers/linux-4-19/kernel/net/ieee802154/nl802154.c:1783
Code: 00 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 ce 01 00 00 48 8b 93 18 01 00 00 48 b8 00 00 00 00 00 fc ff df 48 89 d1 48 c1 e9 03 <0f> b6 0c 01 48 89 d0 83 e0 07 83 c0 01 38 c8 7c 08 84 c9 0f 85 0b
RSP: 0018:ffff88808d4f7628 EFLAGS: 00010246
RAX: dffffc0000000000 RBX: ffff88823aa8f7c0 RCX: 0000000000000000
RDX: 0000000000000000 RSI: ffffffff87c508e8 RDI: ffff88823aa8f8d8
RBP: 1ffff11011a9eec7 R08: 0000000000000000 R09: ffff88808d4f7920
R10: 0000000000000005 R11: 0000000000000001 R12: ffff8880ab5ceec0
R13: ffff8880ab56d090 R14: ffff88823aa8f7c0 R15: ffffffff89cf57c0
FS: 000000000056d300(0000) GS:ffff8880ba000000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055656d94fcf0 CR3: 00000000b3aec000 CR4: 00000000001406f0

syzbot

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May 12, 2021, 1:56:07 PM5/12/21
to syzkaller...@googlegroups.com
syzbot suspects this issue was fixed by commit:

commit 3fe0c0485a298809017fe53a3eebd1863593075d
Author: Alexander Aring <aahr...@redhat.com>
Date: Sun Feb 21 17:43:19 2021 +0000

net: ieee802154: fix nl802154 del llsec dev

bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=173e0d1ed00000
start commit: 811218ec Linux 4.19.172
git tree: linux-4.19.y
syz repro: https://syzkaller.appspot.com/x/repro.syz?x=103a5cb0d00000
C reproducer: https://syzkaller.appspot.com/x/repro.c?x=1579cd3cd00000

If the result looks correct, please mark the issue as fixed by replying with:

#syz fix: net: ieee802154: fix nl802154 del llsec dev

For information about bisection process see: https://goo.gl/tpsmEJ#bisection

syzbot

unread,
May 15, 2021, 8:12:09 PM5/15/21
to syzkaller...@googlegroups.com
syzbot suspects this issue was fixed by commit:

commit 3ee9f1bafd068c480ee9c458c9f74a83e9dfbb12
Author: Alexander Aring <aahr...@redhat.com>
Date: Sun Feb 21 17:43:19 2021 +0000

net: ieee802154: fix nl802154 del llsec dev

bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=131fa963d00000
start commit: 2c8a3fce Linux 4.14.218
git tree: linux-4.14.y
syz repro: https://syzkaller.appspot.com/x/repro.syz?x=116a1298d00000
C reproducer: https://syzkaller.appspot.com/x/repro.c?x=1412d502d00000
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