panic: ASan: Invalid access, 64-byte write at 0xfffffe00588311c0, MallocRedZone(fb) cpuid = 0 time = 1722440155 KDB: stack backtrace: db_trace_self_wrapper() at db_trace_self_wrapper+0xc6/frame 0xfffffe0056dd3650 kdb_backtrace() at kdb_backtrace+0xd0/frame 0xfffffe0056dd37b0 vpanic() at vpanic+0x280/frame 0xfffffe0056dd3970 panic() at panic+0xb5/frame 0xfffffe0056dd3a40 kasan_report() at kasan_report+0xdf/frame 0xfffffe0056dd3b10 kasan_memset() at kasan_memset+0xd1/frame 0xfffffe0056dd3b40 explicit_bzero() at explicit_bzero+0x1f/frame 0xfffffe0056dd3b60 zfree() at zfree+0x131/frame 0xfffffe0056dd3ba0 read_random_uio() at read_random_uio+0x2d2/frame 0xfffffe0056dd3bf0 sys_getrandom() at sys_getrandom+0x20a/frame 0xfffffe0056dd3d10 amd64_syscall() at amd64_syscall+0x4cb/frame 0xfffffe0056dd3f30 fast_syscall_common() at fast_syscall_common+0xf8/frame 0xfffffe0056dd3f30 --- syscall (563, FreeBSD ELF64, getrandom), rip = 0x82219d56a, rsp = 0x8206c5188, rbp = 0x8206c51d0 --- KDB: enter: panic [ thread pid 73 tid 100096 ] Stopped at kdb_enter+0x6e: movq $0,0x23dee37(%rip) db> serialport: Connected to syzkaller.us-central1-b.ci-freebsd-main-test-0 port 1 (session ID: ec09c182d02a0eab8d51ae805843aabf1cc2e06cbd01036f9ca6be9e7221d6c2, active connections: 1).