syzbot


WARNING: suspicious RCU usage in getname_flags
Status: upstream: reported on 2021/04/04 04:15
Reported-by: syzbot+dde0cc33951735441301@syzkaller.appspotmail.com
Fix commit: 3066820034b5 rcu: Reject RCU_LOCKDEP_WARN() false positives
Patched on: [ci-qemu-upstream ci-qemu-upstream-386 ci-qemu2-arm64 ci-qemu2-arm64-compat ci-qemu2-arm64-mte ci-qemu2-riscv64 ci-upstream-bpf-kasan-gce ci-upstream-bpf-next-kasan-gce ci-upstream-gce-leak ci-upstream-kasan-gce ci-upstream-kasan-gce-386 ci-upstream-kasan-gce-root ci-upstream-kasan-gce-selinux-root ci-upstream-kasan-gce-smack-root ci-upstream-linux-next-kasan-gce-root ci-upstream-net-kasan-gce ci-upstream-net-this-kasan-gce ci2-upstream-kcsan-gce ci2-upstream-usb], missing on: [ci-qemu2-arm32 ci-upstream-kmsan-gce ci-upstream-kmsan-gce-386]
First crash: 115d, last: 20d
duplicates (10):
Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
WARNING: suspicious RCU usage in lock_sock_nested 1 113d 109d 0/22 closed as dup on 2021/04/13 18:10
WARNING: suspicious RCU usage in list_lru_destroy 1 114d 110d 0/22 closed as dup on 2021/04/05 03:03
WARNING: suspicious RCU usage in dput 2 49d 112d 0/22 closed as dup on 2021/04/05 03:05
WARNING: suspicious RCU usage in clear_huge_page 19 45d 111d 0/22 closed as dup on 2021/04/05 03:03
WARNING: suspicious RCU usage in do_user_addr_fault 3 30d 110d 0/22 closed as dup on 2021/04/13 18:11
WARNING: suspicious RCU usage in copy_page_range 1 119d 115d 0/22 closed as dup on 2021/04/13 18:12
WARNING: suspicious RCU usage in copy_pte_range 1 115d 111d 0/22 closed as dup on 2021/04/13 18:11
WARNING: suspicious RCU usage in remove_vma (2) 1 116d 112d 0/22 closed as dup on 2021/04/05 03:04
WARNING: suspicious RCU usage in __schedule 5 30d 112d 0/22 closed as dup on 2021/04/13 18:11
WARNING: suspicious RCU usage in find_inlist_lock 1 116d 112d 0/22 closed as dup on 2021/04/13 18:12

Sample crash report:

Crashes (2):
Manager Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Title
ci-upstream-kasan-gce-selinux-root 2021/03/31 04:11 upstream 2bb25b3a748a 6a81331a .config log report info WARNING: suspicious RCU usage in getname_flags
ci-upstream-kasan-gce-386 2021/07/04 03:41 upstream 3dbdb38e2869 55aa55c2 .config log report info WARNING: suspicious RCU usage in getname_flags