panic: ASan: Invalid access, 64-byte write at 0xfffffe00079e8d00, MallocRedZone(fb) cpuid = 0 time = 1722041660 KDB: stack backtrace: db_trace_self_wrapper() at db_trace_self_wrapper+0xc6/frame 0xfffffe0056def650 kdb_backtrace() at kdb_backtrace+0xd0/frame 0xfffffe0056def7b0 vpanic() at vpanic+0x280/frame 0xfffffe0056def970 panic() at panic+0xb5/frame 0xfffffe0056defa40 kasan_report() at kasan_report+0xdf/frame 0xfffffe0056defb10 kasan_memset() at kasan_memset+0xd1/frame 0xfffffe0056defb40 explicit_bzero() at explicit_bzero+0x1f/frame 0xfffffe0056defb60 zfree() at zfree+0x131/frame 0xfffffe0056defba0 read_random_uio() at read_random_uio+0x2d2/frame 0xfffffe0056defbf0 sys_getrandom() at sys_getrandom+0x20a/frame 0xfffffe0056defd10 amd64_syscall() at amd64_syscall+0x4cb/frame 0xfffffe0056deff30 fast_syscall_common() at fast_syscall_common+0xf8/frame 0xfffffe0056deff30 --- syscall (563, FreeBSD ELF64, getrandom), rip = 0x82274656a, rsp = 0x8202dd558, rbp = 0x8202dd5a0 --- KDB: enter: panic [ thread pid 73 tid 100093 ] Stopped at kdb_enter+0x6e: movq $0,0x23db537(%rip) db> serialport: Connected to syzkaller.us-central1-b.ci-freebsd-main-test-1 port 1 (session ID: f8473981ff1901569bcb157749b881d4e315b3ffe9fbfc90a4fc0c9fdaa35aa9, active connections: 1).