bisecting fixing commit since 4fccc2503536a564a4ba31a1d50439854201659f building syzkaller on 2c36e7a75f8689b3da20e1a81a2ee5391f3af6e5 testing commit 4fccc2503536a564a4ba31a1d50439854201659f compiler: gcc version 8.4.1 20210217 (GCC) kernel signature: 0ea2aed9b0476b34ab6779670d02c8bd48e53db4f61640afadc6db976e7b0995 all runs: crashed: kernel panic: audit: rate limit exceeded testing current HEAD b172b44fcb1771e083aad806fa96f3f60e2ddfac testing commit b172b44fcb1771e083aad806fa96f3f60e2ddfac compiler: gcc version 8.4.1 20210217 (GCC) kernel signature: 7fe199f4774c36c39de80e044a62aab127a5142e915e657a43fcde73040d41c8 all runs: crashed: kernel panic: audit: rate limit exceeded revisions tested: 2, total time: 27m32.062830315s (build: 20m35.781579126s, test: 6m26.023430736s) the crash still happens on HEAD commit msg: Linux 4.19.206 crash: kernel panic: audit: rate limit exceeded audit: type=1305 audit(1632288916.587:2): audit_failure=2 old=1 auid=4294967295 ses=4294967295 subj==unconfined res=1 audit: audit_lost=1 audit_rate_limit=2 audit_backlog_limit=0 audit: type=1325 audit(1632288916.587:3): table=filter family=3 entries=0 audit: audit_lost=2 audit_rate_limit=2 audit_backlog_limit=0 audit: type=1305 audit(1632288916.587:4): audit_pid=0 old=0 auid=4294967295 ses=4294967295 subj==unconfined res=1 Kernel panic - not syncing: audit: rate limit exceeded CPU: 0 PID: 5853 Comm: syz-executor.4 Not tainted 4.19.206-syzkaller #0 audit: type=1305 audit(1632288916.587:5): audit_rate_limit=2 old=0 auid=4294967295 ses=4294967295 subj==unconfined res=1 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+0x123/0x171 lib/dump_stack.c:118 panic+0x1cd/0x375 kernel/panic.c:186 audit_panic.cold.22+0x28/0x28 kernel/audit.c:320 audit_log_lost kernel/audit.c:390 [inline] audit_log_lost+0x57/0x120 kernel/audit.c:362 audit_log_end+0x1cf/0x240 kernel/audit.c:2368 audit_log+0xae/0xf0 kernel/audit.c:2396 xt_replace_table+0x55b/0x750 net/netfilter/x_tables.c:1414 xt_register_table+0x253/0x530 net/netfilter/x_tables.c:1453 arpt_register_table+0x188/0x2c0 net/ipv4/netfilter/arp_tables.c:1560 arptable_filter_table_init.part.0+0x3f/0x60 net/ipv4/netfilter/arptable_filter.c:52 arptable_filter_table_init+0x3d/0x50 net/ipv4/netfilter/arptable_filter.c:56 xt_find_table_lock+0x206/0x370 net/netfilter/x_tables.c:1224 xt_request_find_table_lock+0x1c/0xa0 net/netfilter/x_tables.c:1254 get_info+0x10b/0x470 net/ipv6/netfilter/ip6_tables.c:984 do_arpt_get_ctl+0x2fd/0x630 net/ipv4/netfilter/arp_tables.c:1486 nf_sockopt net/netfilter/nf_sockopt.c:104 [inline] nf_getsockopt+0x5f/0xc0 net/netfilter/nf_sockopt.c:122 ip_getsockopt net/ipv4/ip_sockglue.c:1574 [inline] ip_getsockopt+0xf9/0x130 net/ipv4/ip_sockglue.c:1554 tcp_getsockopt net/ipv4/tcp.c:3629 [inline] tcp_getsockopt+0x6a/0xd0 net/ipv4/tcp.c:3623 sock_common_getsockopt+0x73/0xf0 net/core/sock.c:3031 __sys_getsockopt+0x12e/0x1f0 net/socket.c:2050 __do_sys_getsockopt net/socket.c:2061 [inline] __se_sys_getsockopt net/socket.c:2058 [inline] __x64_sys_getsockopt+0xb9/0x150 net/socket.c:2058 do_syscall_64+0xd0/0x4e0 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x46539a Code: 48 c7 c1 bc ff ff ff f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 49 89 ca b8 37 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 bc ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007ffcf29e8248 EFLAGS: 00000246 ORIG_RAX: 0000000000000037 RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 000000000046539a RDX: 0000000000000060 RSI: 0000000000000000 RDI: 0000000000000003 RBP: 00007ffcf29e825c R08: 00007ffcf29e825c R09: 00007ffcf29e8320 R10: 0000000000509688 R11: 0000000000000246 R12: 00007ffcf29e8960 R13: 0000000000000003 R14: 0000000000000003 R15: 0000000000509008 Shutting down cpus with NMI Kernel Offset: disabled Rebooting in 86400 seconds..