syzbot


INFO: trying to register non-static key in ieee802154_add_llsec_key (2)

Status: auto-obsoleted due to no activity on 2023/03/20 04:39
Reported-by: syzbot+2d3908a703d96fe2dd32@syzkaller.appspotmail.com
First crash: 368d, last: 306d
Similar bugs (2)
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
linux-4.19 INFO: trying to register non-static key in ieee802154_add_llsec_key C error 17 332d 792d 0/1 upstream: reported C repro on 2021/07/22 15:06
linux-4.14 INFO: trying to register non-static key in ieee802154_add_llsec_key 4 495d 635d 0/1 auto-obsoleted due to no activity on 2022/09/12 07:42

Sample crash report:
audit: type=1107 audit(1668919123.265:1610): pid=14749 uid=0 auid=4294967295 ses=4294967295 msg='ő'
INFO: trying to register non-static key.
the code is fine but needs lockdep annotation.
turning off the locking correctness validator.
CPU: 0 PID: 14774 Comm: syz-executor.2 Not tainted 4.14.299-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022
Call Trace:
 __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
 __lock_acquire+0x167/0x3f20 kernel/locking/lockdep.c:3378
 lock_acquire+0x170/0x3f0 kernel/locking/lockdep.c:3998
audit: type=1107 audit(1668919123.275:1611): pid=14779 uid=0 auid=4294967295 ses=4294967295 msg='ő'
 __mutex_lock_common kernel/locking/mutex.c:756 [inline]
 __mutex_lock+0xc4/0x1310 kernel/locking/mutex.c:893
 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
 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:2454
 genl_rcv+0x24/0x40 net/netlink/genetlink.c:636
 netlink_unicast_kernel net/netlink/af_netlink.c:1296 [inline]
 netlink_unicast+0x437/0x610 net/netlink/af_netlink.c:1322
 netlink_sendmsg+0x648/0xbc0 net/netlink/af_netlink.c:1893
 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+0x5e/0xd3
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: 14774 Comm: syz-executor.2 Not tainted 4.14.299-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022
task: ffff888096bcc3c0 task.stack: ffff888097328000
RIP: 0010:llsec_key_id_equal+0x22/0x390 net/mac802154/llsec.c:199
RSP: 0018:ffff88809732f510 EFLAGS: 00010202
RAX: dffffc0000000000 RBX: 0000000000000010 RCX: ffffc900063b6000
RDX: 0000000000000002 RSI: ffffffff86dfe6d1 RDI: 0000000000000010
RBP: ffff88809732f650 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000001 R11: ffff888096bcc3c0 R12: ffff88809732f650
R13: ffff88809732f690 R14: ffff8880980956e0 R15: dffffc0000000000
FS:  00007f4ec43fd700(0000) GS:ffff8880ba400000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f901e3f2718 CR3: 00000000a1b96000 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:2454
 genl_rcv+0x24/0x40 net/netlink/genetlink.c:636
 netlink_unicast_kernel net/netlink/af_netlink.c:1296 [inline]
 netlink_unicast+0x437/0x610 net/netlink/af_netlink.c:1322
 netlink_sendmsg+0x648/0xbc0 net/netlink/af_netlink.c:1893
 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+0x5e/0xd3
Code: 89 e0 41 5c c3 0f 1f 40 00 41 55 41 54 55 48 89 f5 53 48 89 fb e8 ef 70 75 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: ffff88809732f510
---[ end trace 34efd6d91cabb3b2 ]---
----------------
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 ef 70 75 fa       	callq  0xfa757109
  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

Crashes (3):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2022/11/20 04:38 linux-4.14.y e911713e40ca 5bb70014 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-4-14 INFO: trying to register non-static key in ieee802154_add_llsec_key
2022/10/02 16:29 linux-4.14.y 9d5c0b3a8e1a feb56351 .config console log report info [disk image] [vmlinux] ci2-linux-4-14 INFO: trying to register non-static key in ieee802154_add_llsec_key
2022/09/19 01:48 linux-4.14.y 5df8b4735177 dd9a85ff .config console log report info [disk image] [vmlinux] ci2-linux-4-14 INFO: trying to register non-static key in ieee802154_add_llsec_key
* Struck through repros no longer work on HEAD.