panic: ASan: Invalid access, 64-byte write at 0xfffffe005959c480, MallocRedZone(fb) cpuid = 0 time = 1722274526 KDB: stack backtrace: db_trace_self_wrapper() at db_trace_self_wrapper+0xc6/frame 0xfffffe0056dcc650 kdb_backtrace() at kdb_backtrace+0xd0/frame 0xfffffe0056dcc7b0 vpanic() at vpanic+0x280/frame 0xfffffe0056dcc970 panic() at panic+0xb5/frame 0xfffffe0056dcca40 kasan_report() at kasan_report+0xdf/frame 0xfffffe0056dccb10 kasan_memset() at kasan_memset+0xd1/frame 0xfffffe0056dccb40 explicit_bzero() at explicit_bzero+0x1f/frame 0xfffffe0056dccb60 zfree() at zfree+0x131/frame 0xfffffe0056dccba0 read_random_uio() at read_random_uio+0x2d2/frame 0xfffffe0056dccbf0 sys_getrandom() at sys_getrandom+0x20a/frame 0xfffffe0056dccd10 amd64_syscall() at amd64_syscall+0x4cb/frame 0xfffffe0056dccf30 fast_syscall_common() at fast_syscall_common+0xf8/frame 0xfffffe0056dccf30 --- syscall (563, FreeBSD ELF64, getrandom), rip = 0x8230d956a, rsp = 0x820f89098, rbp = 0x820f890e0 --- KDB: enter: panic [ thread pid 73 tid 100097 ] Stopped at kdb_enter+0x6e: movq $0,0x23dc0a7(%rip) db> serialport: Connected to syzkaller.us-central1-b.ci-freebsd-i386-test-2 port 1 (session ID: 0d5f8b065cef92c4e3c7bbae282058787369cb42ef3a93d188638d280c23f5ac, active connections: 1).