syzbot


KCSAN: data-race in __bpf_lru_list_rotate / bpf_lru_push_free (2)
Status: fixed on 2021/04/09 19:46
Reported-by: syzbot+516acdb03d3e27d91bcd@syzkaller.appspotmail.com
Fix commit: 6df8fb83301d bpf_lru_list: Read double-checked variable once without lock
First crash: 402d, last: 293d
similar bugs (1):
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
upstream KCSAN: data-race in __bpf_lru_list_rotate / bpf_lru_push_free 10 462d 533d 0/22 auto-closed as invalid on 2020/10/03 23:58

Sample crash report:

Crashes (32):
Manager Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Title
ci2-upstream-kcsan-gce 2021/02/14 13:22 upstream 358feceebbf6 98682e5e .config log report info KCSAN: data-race in __bpf_lru_list_rotate / bpf_lru_push_free
ci2-upstream-kcsan-gce 2021/02/13 23:54 upstream ac30d8ce28d6 98682e5e .config log report info KCSAN: data-race in __bpf_lru_list_rotate / bpf_lru_push_free
ci2-upstream-kcsan-gce 2021/02/11 19:09 upstream 291009f656e8 a5f86b15 .config log report info KCSAN: data-race in __bpf_lru_list_rotate / bpf_lru_push_free
ci2-upstream-kcsan-gce 2021/02/11 06:32 upstream 291009f656e8 a52ee10a .config log report info KCSAN: data-race in __bpf_lru_list_rotate / bpf_lru_push_free
ci2-upstream-kcsan-gce 2021/02/08 14:25 upstream 92bf22614b21 2ce644fc .config log report info KCSAN: data-race in __bpf_lru_list_rotate / bpf_lru_push_free
ci2-upstream-kcsan-gce 2021/02/07 15:58 upstream 825b5991a46e 2ce644fc .config log report info KCSAN: data-race in __bpf_lru_list_rotate / bpf_lru_push_free
ci2-upstream-kcsan-gce 2021/02/07 01:29 upstream 964d069f93c4 0655e081 .config log report info KCSAN: data-race in __bpf_lru_list_rotate / bpf_lru_push_free
ci2-upstream-kcsan-gce 2021/02/01 15:57 upstream 1048ba83fb1c e6b95f32 .config log report info KCSAN: data-race in __bpf_lru_list_rotate / bpf_lru_push_free
ci2-upstream-kcsan-gce 2021/02/01 04:02 upstream 1048ba83fb1c fc9fd31e .config log report info KCSAN: data-race in __bpf_lru_list_rotate / bpf_lru_push_free
ci2-upstream-kcsan-gce 2021/01/29 00:11 upstream e5ff2cb9cf67 7df34f59 .config log report info KCSAN: data-race in __bpf_lru_list_rotate / bpf_lru_push_free
ci2-upstream-kcsan-gce 2021/01/27 20:37 upstream 76c057c84d28 a57db36f .config log report info KCSAN: data-race in __bpf_lru_list_rotate / bpf_lru_push_free
ci2-upstream-kcsan-gce 2021/01/27 11:21 upstream 2ab38c17aac1 a0ebf917 .config log report info KCSAN: data-race in __bpf_lru_list_rotate / bpf_lru_push_free
ci2-upstream-kcsan-gce 2021/01/25 12:59 upstream 6ee1d745b7c9 52e37319 .config log report info KCSAN: data-race in __bpf_lru_list_rotate / bpf_lru_push_free
ci2-upstream-kcsan-gce 2021/01/24 06:32 upstream e1ae4b0be158 52e37319 .config log report info KCSAN: data-race in __bpf_lru_list_rotate / bpf_lru_push_free
ci2-upstream-kcsan-gce 2021/01/20 12:02 upstream 45dfb8a5659a d4f4eca5 .config log report info KCSAN: data-race in __bpf_lru_list_rotate / bpf_lru_push_free
ci2-upstream-kcsan-gce 2021/01/18 16:49 upstream 19c329f68089 63631df1 .config log report info KCSAN: data-race in __bpf_lru_list_rotate / bpf_lru_push_free
ci2-upstream-kcsan-gce 2021/01/18 06:02 upstream 19c329f68089 fd103621 .config log report info KCSAN: data-race in __bpf_lru_list_rotate / bpf_lru_push_free
ci2-upstream-kcsan-gce 2021/01/17 11:48 upstream 0da0a8a0a0e1 813be542 .config log report info
ci2-upstream-kcsan-gce 2021/01/09 23:02 upstream 2ff90100ace8 2c1f2513 .config log report info
ci2-upstream-kcsan-gce 2021/01/07 00:18 upstream 71c061d24438 c104d4a3 .config log report info
ci2-upstream-kcsan-gce 2021/01/05 15:28 upstream 36bbbd0e234d a0234d98 .config log report info
ci2-upstream-kcsan-gce 2020/12/31 07:42 upstream f6e1ea196492 5cc121d6 .config log report info
ci2-upstream-kcsan-gce 2020/12/31 00:09 upstream f6e1ea196492 ecb8c012 .config log report info
ci2-upstream-kcsan-gce 2020/12/29 08:37 upstream dea8dcf2a9fa 8259d56c .config log report info
ci2-upstream-kcsan-gce 2020/12/27 04:04 upstream f838f8d2b694 821e0b09 .config log report info
ci2-upstream-kcsan-gce 2020/12/22 05:03 upstream 8653b778e454 04201c06 .config log report info
ci2-upstream-kcsan-gce 2020/12/13 01:27 upstream 7b1b868e1d91 bca53db9 .config log report info
ci2-upstream-kcsan-gce 2020/12/10 01:18 upstream ca4bbdaf1716 c090b4da .config log report info
ci2-upstream-kcsan-gce 2020/12/08 12:29 upstream cd796ed33450 9af51e31 .config log report info
ci2-upstream-kcsan-gce 2020/12/07 13:46 upstream 0477e9288185 f80ce148 .config log report info
ci2-upstream-kcsan-gce 2020/11/01 15:42 upstream c2dc4c073fb7 8bc4594f .config log report info
ci2-upstream-kcsan-gce 2020/10/28 13:31 upstream ed8780e3f2ec 96e03c1c .config log report info