INFO: trying to register non-static key in ieee802154_add_llsec_key

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syzbot

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Dec 25, 2021, 3:20:23 PM12/25/21
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Hello,

syzbot found the following issue on:

HEAD commit: 8ee0807eedf3 Linux 4.14.259
git tree: linux-4.14.y
console output: https://syzkaller.appspot.com/x/log.txt?x=14a05063b00000
kernel config: https://syzkaller.appspot.com/x/.config?x=cd64d8ac71350686
dashboard link: https://syzkaller.appspot.com/bug?extid=faf2951d711ae84d5383
compiler: gcc version 10.2.1 20210110 (Debian 10.2.1-6)

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+faf295...@syzkaller.appspotmail.com

INFO: trying to register non-static key.
the code is fine but needs lockdep annotation.
turning off the locking correctness validator.
CPU: 0 PID: 3606 Comm: syz-executor.1 Not tainted 4.14.259-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Unknown ioctl 1964
Call Trace:
Unknown ioctl 1964
__dump_stack lib/dump_stack.c:17 [inline]
dump_stack+0x1b2/0x281 lib/dump_stack.c:58
register_lock_class+0x389/0x1180 kernel/locking/lockdep.c:768
Unknown ioctl 1076909579
__lock_acquire+0x167/0x3f20 kernel/locking/lockdep.c:3378
Unknown ioctl 1076909579
lock_acquire+0x170/0x3f0 kernel/locking/lockdep.c:3998
__mutex_lock_common kernel/locking/mutex.c:756 [inline]
__mutex_lock+0xc4/0x1310 kernel/locking/mutex.c:893
Unknown ioctl 1964
Unknown ioctl 1076909579
ieee802154_add_llsec_key+0x44/0x80 net/mac802154/cfg.c:343
rdev_add_llsec_key net/ieee802154/rdev-ops.h:260 [inline]
nl802154_add_llsec_key+0x396/0x4f0 net/ieee802154/nl802154.c:1619
Unknown ioctl 1964
genl_family_rcv_msg+0x572/0xb20 net/netlink/genetlink.c:600
Unknown ioctl 1964
genl_rcv_msg+0xaf/0x140 net/netlink/genetlink.c:625
netlink_rcv_skb+0x125/0x390 net/netlink/af_netlink.c:2446
Unknown ioctl 1964
genl_rcv+0x24/0x40 net/netlink/genetlink.c:636
netlink_unicast_kernel net/netlink/af_netlink.c:1294 [inline]
netlink_unicast+0x437/0x610 net/netlink/af_netlink.c:1320
netlink_sendmsg+0x648/0xbc0 net/netlink/af_netlink.c:1891
Unknown ioctl 1076909579
Unknown ioctl 1964
sock_sendmsg_nosec net/socket.c:646 [inline]
sock_sendmsg+0xb5/0x100 net/socket.c:656
___sys_sendmsg+0x6c8/0x800 net/socket.c:2062
Unknown ioctl 1076909579
__sys_sendmsg+0xa3/0x120 net/socket.c:2096
SYSC_sendmsg net/socket.c:2107 [inline]
SyS_sendmsg+0x27/0x40 net/socket.c:2103
do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292
entry_SYSCALL_64_after_hwframe+0x46/0xbb
RIP: 0033:0x7f3408336e99
RSP: 002b:00007f3406cac168 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007f3408449f60 RCX: 00007f3408336e99
RDX: 0000000000010000 RSI: 0000000020000280 RDI: 0000000000000005
RBP: 00007f3408390ff1 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffe7d568c5f R14: 00007f3406cac300 R15: 0000000000022000
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: 3606 Comm: syz-executor.1 Not tainted 4.14.259-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
task: ffff88808d582680 task.stack: ffff8880a2300000
RIP: 0010:llsec_key_id_equal+0x22/0x390 net/mac802154/llsec.c:199
RSP: 0018:ffff8880a2307510 EFLAGS: 00010202
RAX: dffffc0000000000 RBX: 0000000000000010 RCX: ffffc900067f6000
RDX: 0000000000000002 RSI: ffffffff86df2591 RDI: 0000000000000010
RBP: ffff8880a2307650 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000001 R11: ffff88808d582680 R12: ffff8880a2307650
R13: ffff8880a2307690 R14: ffff8880ac27d8e0 R15: dffffc0000000000
FS: 00007f3406cac700(0000) GS:ffff8880ba400000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fb344a2e1b8 CR3: 000000009b7d3000 CR4: 00000000003406f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
mac802154_llsec_key_add+0x114/0xa40 net/mac802154/llsec.c:232
ieee802154_add_llsec_key+0x56/0x80 net/mac802154/cfg.c:344
rdev_add_llsec_key net/ieee802154/rdev-ops.h:260 [inline]
nl802154_add_llsec_key+0x396/0x4f0 net/ieee802154/nl802154.c:1619
genl_family_rcv_msg+0x572/0xb20 net/netlink/genetlink.c:600
genl_rcv_msg+0xaf/0x140 net/netlink/genetlink.c:625
netlink_rcv_skb+0x125/0x390 net/netlink/af_netlink.c:2446
genl_rcv+0x24/0x40 net/netlink/genetlink.c:636
netlink_unicast_kernel net/netlink/af_netlink.c:1294 [inline]
netlink_unicast+0x437/0x610 net/netlink/af_netlink.c:1320
netlink_sendmsg+0x648/0xbc0 net/netlink/af_netlink.c:1891
sock_sendmsg_nosec net/socket.c:646 [inline]
sock_sendmsg+0xb5/0x100 net/socket.c:656
___sys_sendmsg+0x6c8/0x800 net/socket.c:2062
__sys_sendmsg+0xa3/0x120 net/socket.c:2096
SYSC_sendmsg net/socket.c:2107 [inline]
SyS_sendmsg+0x27/0x40 net/socket.c:2103
do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292
entry_SYSCALL_64_after_hwframe+0x46/0xbb
RIP: 0033:0x7f3408336e99
RSP: 002b:00007f3406cac168 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007f3408449f60 RCX: 00007f3408336e99
RDX: 0000000000010000 RSI: 0000000020000280 RDI: 0000000000000005
RBP: 00007f3408390ff1 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffe7d568c5f R14: 00007f3406cac300 R15: 0000000000022000
Code: 89 e0 41 5c c3 0f 1f 40 00 41 55 41 54 55 48 89 f5 53 48 89 fb e8 9f 15 76 fa 48 89 da 48 b8 00 00 00 00 00 fc ff df 48 c1 ea 03 <0f> b6 04 02 84 c0 74 06 0f 8e 31 02 00 00 48 89 ea 44 0f b6 23
RIP: llsec_key_id_equal+0x22/0x390 net/mac802154/llsec.c:199 RSP: ffff8880a2307510
---[ end trace 03f360ac4692902f ]---
----------------
Code disassembly (best guess):
0: 89 e0 mov %esp,%eax
2: 41 5c pop %r12
4: c3 retq
5: 0f 1f 40 00 nopl 0x0(%rax)
9: 41 55 push %r13
b: 41 54 push %r12
d: 55 push %rbp
e: 48 89 f5 mov %rsi,%rbp
11: 53 push %rbx
12: 48 89 fb mov %rdi,%rbx
15: e8 9f 15 76 fa callq 0xfa7615b9
1a: 48 89 da mov %rbx,%rdx
1d: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax
24: fc ff df
27: 48 c1 ea 03 shr $0x3,%rdx
* 2b: 0f b6 04 02 movzbl (%rdx,%rax,1),%eax <-- trapping instruction
2f: 84 c0 test %al,%al
31: 74 06 je 0x39
33: 0f 8e 31 02 00 00 jle 0x26a
39: 48 89 ea mov %rbp,%rdx
3c: 44 0f b6 23 movzbl (%rbx),%r12d


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syzbot

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Sep 12, 2022, 3:42:34 AM9/12/22
to syzkaller...@googlegroups.com
Auto-closing this bug as obsolete.
Crashes did not happen for a while, no reproducer and no activity.
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