WARNING: locking bug in tomoyo

WARNING: locking bug in tomoyo_supervisor

Status: closed as dup on 2020/04/17 04:38
Subsystems: tomoyo
[Documentation on labels]
Reported-by: syzbot+1c36440b364ea3774701@syzkaller.appspotmail.com
First crash: 1686d, last: 1686d

Cause bisection: the cause commit could be any of (bisect log):
  9211bfbff80a netfilter: add missing IS_ENABLED(CONFIG_BRIDGE_NETFILTER) checks to header-file.
  47e640af2e49 netfilter: add missing IS_ENABLED(CONFIG_NF_TABLES) check to header-file.
  a1b2f04ea527 netfilter: add missing includes to a number of header-files.
  0abc8bf4f284 netfilter: add missing IS_ENABLED(CONFIG_NF_CONNTRACK) checks to some header-files.
  bd96b4c75675 netfilter: inline four headers files into another one.
  43dd16efc7f2 netfilter: nf_tables: store data in offload context registers
  78458e3e08cd netfilter: add missing IS_ENABLED(CONFIG_NETFILTER) checks to some header-files.
  20a9379d9a03 netfilter: remove "#ifdef __KERNEL__" guards from some headers.
  bd8699e9e292 netfilter: nft_bitwise: add offload support
  2a475c409fe8 kbuild: remove all netfilter headers from header-test blacklist.
  7e59b3fea2a2 netfilter: remove unnecessary spaces
  1b90af292e71 ipvs: Improve robustness to the ipvs sysctl
  5785cf15fd74 netfilter: nf_tables: add missing prototypes.
  0a30ba509fde netfilter: nf_nat_proto: make tables static
  e84fb4b3666d netfilter: conntrack: use shared sysctl constants
  105333435b4f netfilter: connlabels: prefer static lock initialiser
  8c0bb7873815 netfilter: synproxy: rename mss synproxy_options field
  c162610c7db2 Merge git://git.kernel.org/pub/scm/linux/kernel/git/pablo/nf-next

▶ ▼ Duplicate of

Title	Repro	Cause bisect	Fix bisect	Count	Last	Reported
WARNING: locking bug in inet_autobind net	C	done	error	103	696d	2019d

▶ ▼ Discussions (1)

Title	Replies (including bot)	Last reply
WARNING: locking bug in tomoyo_supervisor	4 (5)	2020/04/23 02:58

Sample crash report:

------------[ cut here ]------------
WARNING: CPU: 1 PID: 8602 at kernel/locking/lockdep.c:873 look_up_lock_class+0x207/0x280 kernel/locking/lockdep.c:863
Kernel panic - not syncing: panic_on_warn set ...
CPU: 1 PID: 8602 Comm: syz-executor.5 Not tainted 5.6.0-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x1e9/0x30e lib/dump_stack.c:118
 panic+0x264/0x7a0 kernel/panic.c:221
 __warn+0x102/0x210 kernel/panic.c:574
 look_up_lock_class+0x207/0x280 kernel/locking/lockdep.c:863
 __warn+0x209/0x210 kernel/panic.c:582
 look_up_lock_class+0x207/0x280 kernel/locking/lockdep.c:863
 report_bug+0x1ac/0x2d0 lib/bug.c:195
 fixup_bug arch/x86/kernel/traps.c:175 [inline]
 do_error_trap+0xca/0x1c0 arch/x86/kernel/traps.c:267
 do_invalid_op+0x32/0x40 arch/x86/kernel/traps.c:286
 look_up_lock_class+0x207/0x280 kernel/locking/lockdep.c:863
 invalid_op+0x23/0x30 arch/x86/entry/entry_64.S:1027
RIP: 0010:look_up_lock_class+0x207/0x280 kernel/locking/lockdep.c:863
Code: 3d 91 8c 12 08 00 0f 85 35 ff ff ff 31 db 48 c7 c7 19 59 e5 88 48 c7 c6 03 ea e6 88 31 c0 e8 10 18 ec ff 0f 0b e9 7b ff ff ff <0f> 0b e9 74 ff ff ff 48 c7 c1 30 4d 55 8b 80 e1 07 80 c1 03 38 c1
RSP: 0018:ffffc90006017a98 EFLAGS: 00010002
RAX: ffffffff8ab05460 RBX: ffffffff8ad678f8 RCX: 0000000000000000
RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffff888096695860
RBP: ffff888096695878 R08: 0000000000000001 R09: 0000000000000000
R10: fffffbfff12d7735 R11: 0000000000000000 R12: 1ffff11012cd2b0c
R13: ffffffff89063ea9 R14: ffff888096695860 R15: dffffc0000000000
 register_lock_class+0x97/0x10d0 kernel/locking/lockdep.c:1220
 tomoyo_supervisor+0x13d/0x1310 security/tomoyo/common.c:2076
 __lock_acquire+0x102/0x2c30 kernel/locking/lockdep.c:4234
 rcu_lock_release+0x5/0x20 include/linux/rcupdate.h:212
 srcu_read_unlock include/linux/srcu.h:181 [inline]
 tomoyo_read_unlock security/tomoyo/common.h:1123 [inline]
 tomoyo_inet_entry security/tomoyo/network.c:487 [inline]
 tomoyo_check_inet_address+0x661/0x8e0 security/tomoyo/network.c:532
 lock_acquire+0x169/0x480 kernel/locking/lockdep.c:4934
 spin_lock_bh include/linux/spinlock.h:358 [inline]
 lock_sock_nested+0x43/0x110 net/core/sock.c:2959

Crashes (1):
Time	Kernel	Commit	Syzkaller	Config	Log	Report	Syz repro	C repro	VM info	Assets (help?)	Manager	Title
2020/04/12 21:54	upstream	4f8a3cc1183c	36b0b050	.config	console log	report	syz				ci-upstream-kasan-gce-smack-root

* ~~Struck through~~ repros no longer work on HEAD.