syzbot


kernel panic: audit: rate limit exceeded

Status: closed as dup on 2020/02/27 15:41
Reported-by: syzbot+72461ac44b36c98f58e5@syzkaller.appspotmail.com
First crash: 952d, last: 951d

Cause bisection: introduced by (bisect log) :
commit 28b75415ad19fef232d8daab4d5de17d753f0b36
Author: Romain Perier <romain.perier@collabora.com>
Date: Wed Aug 23 07:16:51 2017 +0000

  wireless: ipw2200: Replace PCI pool old API

Crash: kernel panic: audit: backlog limit exceeded (log)
Repro: C syz .config
Duplicate of (1):
Title Repro Cause bisect Fix bisect Count Last Reported
kernel panic: audit: backlog limit exceeded C done 6 952d 951d
similar bugs (2):
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
linux-4.19 kernel panic: audit: rate limit exceeded C error 1 375d 951d 0/1 upstream: reported C repro on 2020/02/23 17:28
android-54 kernel panic: audit: rate limit exceeded C 1 952d 952d 0/2 closed as invalid on 2020/02/27 15:45

Sample crash report:
audit: audit_lost=1 audit_rate_limit=2 audit_backlog_limit=0
Kernel panic - not syncing: audit: rate limit exceeded
CPU: 1 PID: 10031 Comm: syz-executor626 Not tainted 5.6.0-rc2-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+0x197/0x210 lib/dump_stack.c:118
 panic+0x2e3/0x75c kernel/panic.c:221
 audit_panic.cold+0x32/0x32 kernel/audit.c:307
 audit_log_lost kernel/audit.c:377 [inline]
 audit_log_lost+0x8b/0x180 kernel/audit.c:349
 audit_log_end+0x23c/0x2b0 kernel/audit.c:2322
 audit_log_config_change+0xcc/0xf0 kernel/audit.c:396
 audit_receive_msg+0x2246/0x28b0 kernel/audit.c:1277
 audit_receive+0x114/0x230 kernel/audit.c:1513
 netlink_unicast_kernel net/netlink/af_netlink.c:1303 [inline]
 netlink_unicast+0x59e/0x7e0 net/netlink/af_netlink.c:1329
 netlink_sendmsg+0x91c/0xea0 net/netlink/af_netlink.c:1918
 sock_sendmsg_nosec net/socket.c:652 [inline]
 sock_sendmsg+0xd7/0x130 net/socket.c:672
 ____sys_sendmsg+0x753/0x880 net/socket.c:2343
 ___sys_sendmsg+0x100/0x170 net/socket.c:2397
 __sys_sendmsg+0x105/0x1d0 net/socket.c:2430
 __do_sys_sendmsg net/socket.c:2439 [inline]
 __se_sys_sendmsg net/socket.c:2437 [inline]
 __x64_sys_sendmsg+0x78/0xb0 net/socket.c:2437
 do_syscall_64+0xfa/0x790 arch/x86/entry/common.c:294
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x441239
Code: e8 fc ab 02 00 48 83 c4 18 c3 0f 1f 80 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 0f 83 9b 09 fc ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007ffd68c9df48 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000441239
RDX: 0000000000000000 RSI: 00000000200006c0 RDI: 0000000000000003
RBP: 0000000000018b16 R08: 00000000004002c8 R09: 00000000004002c8
R10: 0000000000000004 R11: 0000000000000246 R12: 0000000000402060
R13: 00000000004020f0 R14: 0000000000000000 R15: 0000000000000000
Kernel Offset: disabled
Rebooting in 86400 seconds..

Crashes (5):
Manager Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Title
ci-upstream-net-this-kasan-gce 2020/02/22 18:33 net 0c0ddd6ae47c 2c36e7a7 .config log report syz C
ci-upstream-net-kasan-gce 2020/02/22 20:53 net-next 732a0dee501f 2c36e7a7 .config log report syz C
ci-upstream-net-kasan-gce 2020/02/24 07:11 net-next 2045e158fc7f d801cb02 .config log report
ci-upstream-net-kasan-gce 2020/02/23 17:34 net-next 68e2617acfed 2c36e7a7 .config log report
ci-upstream-net-kasan-gce 2020/02/22 18:46 net-next 732a0dee501f 2c36e7a7 .config log report
* Struck through repros no longer work on HEAD.