panic: ASan: Invalid access, 64-byte write at 0xfffffe0058830b80, MallocRedZone(fb) cpuid = 0 time = 1722456408 KDB: stack backtrace: db_trace_self_wrapper() at db_trace_self_wrapper+0xc6/frame 0xfffffe0056dda650 kdb_backtrace() at kdb_backtrace+0xd0/frame 0xfffffe0056dda7b0 vpanic() at vpanic+0x280/frame 0xfffffe0056dda970 panic() at panic+0xb5/frame 0xfffffe0056ddaa40 kasan_report() at kasan_report+0xdf/frame 0xfffffe0056ddab10 kasan_memset() at kasan_memset+0xd1/frame 0xfffffe0056ddab40 explicit_bzero() at explicit_bzero+0x1f/frame 0xfffffe0056ddab60 zfree() at zfree+0x131/frame 0xfffffe0056ddaba0 read_random_uio() at read_random_uio+0x2d2/frame 0xfffffe0056ddabf0 sys_getrandom() at sys_getrandom+0x20a/frame 0xfffffe0056ddad10 amd64_syscall() at amd64_syscall+0x4cb/frame 0xfffffe0056ddaf30 fast_syscall_common() at fast_syscall_common+0xf8/frame 0xfffffe0056ddaf30 --- syscall (563, FreeBSD ELF64, getrandom), rip = 0x82295956a, rsp = 0x8208e08e8, rbp = 0x8208e0930 --- 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: c5279d51affd3666872aea8c4e5962fb0ceea6ef09ef065b48110ac26511e928, active connections: 1).