syzbot


WARNING in ieee802154_del_seclevel

Status: fixed on 2021/11/10 00:50
Reported-by: syzbot+fbf4fc11a819824e027b@syzkaller.appspotmail.com
Fix commit: 9dde130937e9 net: ieee802154: forbid monitor for del llsec seclevel
First crash: 584d, last: 545d

Cause bisection: introduced by (bisect log) :
commit 416dacb819f59180e4d86a5550052033ebb6d72c
Author: Alan Stern <stern@rowland.harvard.edu>
Date: Wed Aug 21 17:27:12 2019 +0000

  HID: hidraw: Fix invalid read in hidraw_ioctl

Crash: general protection fault in batadv_iv_ogm_queue_add (log)
Repro: C syz .config

Sample crash report:
------------[ cut here ]------------
DEBUG_LOCKS_WARN_ON(lock->magic != lock)
WARNING: CPU: 1 PID: 8404 at kernel/locking/mutex.c:931 __mutex_lock_common kernel/locking/mutex.c:931 [inline]
WARNING: CPU: 1 PID: 8404 at kernel/locking/mutex.c:931 __mutex_lock+0xc0b/0x1120 kernel/locking/mutex.c:1096
Modules linked in:
CPU: 0 PID: 8404 Comm: syz-executor093 Not tainted 5.12.0-rc4-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:__mutex_lock_common kernel/locking/mutex.c:931 [inline]
RIP: 0010:__mutex_lock+0xc0b/0x1120 kernel/locking/mutex.c:1096
Code: 08 84 d2 0f 85 a3 04 00 00 8b 05 28 af c0 04 85 c0 0f 85 12 f5 ff ff 48 c7 c6 20 8b 6b 89 48 c7 c7 e0 88 6b 89 e8 c2 3e bd ff <0f> 0b e9 f8 f4 ff ff 65 48 8b 1c 25 00 f0 01 00 be 08 00 00 00 48
RSP: 0018:ffffc90000f2f3f8 EFLAGS: 00010286
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000
RDX: ffff88801d8fd4c0 RSI: ffffffff815c4d15 RDI: fffff520001e5e71
RBP: ffff8880175d8c90 R08: 0000000000000000 R09: 0000000000000000
R10: ffffffff815bdaae R11: 0000000000000000 R12: 0000000000000000
R13: dffffc0000000000 R14: ffffc90000f2f5a8 R15: ffff888018256c14
FS:  000000000233b300(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffe0ef38f4c CR3: 0000000013a6d000 CR4: 00000000001506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 ieee802154_del_seclevel+0x3f/0x70 net/mac802154/cfg.c:382
 rdev_del_seclevel net/ieee802154/rdev-ops.h:284 [inline]
 nl802154_del_llsec_seclevel+0x1a7/0x250 net/ieee802154/nl802154.c:2093
 genl_family_rcv_msg_doit+0x228/0x320 net/netlink/genetlink.c:739
 genl_family_rcv_msg net/netlink/genetlink.c:783 [inline]
 genl_rcv_msg+0x328/0x580 net/netlink/genetlink.c:800
 netlink_rcv_skb+0x153/0x420 net/netlink/af_netlink.c:2502
 genl_rcv+0x24/0x40 net/netlink/genetlink.c:811
 netlink_unicast_kernel net/netlink/af_netlink.c:1312 [inline]
 netlink_unicast+0x533/0x7d0 net/netlink/af_netlink.c:1338
 netlink_sendmsg+0x856/0xd90 net/netlink/af_netlink.c:1927
 sock_sendmsg_nosec net/socket.c:654 [inline]
 sock_sendmsg+0xcf/0x120 net/socket.c:674
 ____sys_sendmsg+0x6e8/0x810 net/socket.c:2350
 ___sys_sendmsg+0xf3/0x170 net/socket.c:2404
 __sys_sendmsg+0xe5/0x1b0 net/socket.c:2433
 do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46
 entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x43fca9
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:00007ffe691e3788 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00000000004004a0 RCX: 000000000043fca9
RDX: 0000000000000000 RSI: 00000000200002c0 RDI: 0000000000000005
RBP: 0000000000403710 R08: 0000000000000002 R09: 00000000004004a0
R10: 0000000000000008 R11: 0000000000000246 R12: 00000000004037a0
R13: 0000000000000000 R14: 00000000004ad018 R15: 00000000004004a0

Crashes (7):
Manager Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Title
ci-upstream-net-this-kasan-gce 2021/03/30 21:53 net 6e5a03bcba44 6a81331a .config log report syz C WARNING in ieee802154_del_seclevel
ci-upstream-net-kasan-gce 2021/03/30 21:08 net-next 37f368d8d09d 6a81331a .config log report syz C WARNING in ieee802154_del_seclevel
ci-qemu2-arm64-compat 2021/02/20 07:56 upstream f40ddce88593 f689d40a .config log report info WARNING in ieee802154_del_seclevel
ci-upstream-net-this-kasan-gce 2021/03/26 08:16 net 75887e881b19 6a383ecf .config log report info WARNING in ieee802154_del_seclevel
ci-upstream-net-this-kasan-gce 2021/03/25 03:17 net 6f235a69e594 607e3baf .config log report info WARNING in ieee802154_del_seclevel
ci-upstream-net-kasan-gce 2021/03/30 19:25 net-next 37f368d8d09d 6a81331a .config log report info WARNING in ieee802154_del_seclevel
ci-upstream-net-kasan-gce 2021/02/21 20:07 net-next 38b5133ad607 a659b3f1 .config log report info WARNING in ieee802154_del_seclevel
* Struck through repros no longer work on HEAD.