panic: ASan: Invalid access, 4-byte read at 0xfffffe005709691c, StackLeft(f1) cpuid = 1 time = 7 KDB: stack backtrace: db_trace_self_wrapper() at db_trace_self_wrapper+0xc6/frame 0xfffffe00570963f0 kdb_backtrace() at kdb_backtrace+0xd0/frame 0xfffffe0057096550 vpanic() at vpanic+0x257/frame 0xfffffe0057096710 panic() at panic+0xb5/frame 0xfffffe00570967e0 kasan_report() at kasan_report+0xdf/frame 0xfffffe00570968b0 sigqueue_delete() at sigqueue_delete+0x192/frame 0xfffffe0057096990 cursig() at cursig+0xd5c/frame 0xfffffe0057096bf0 ast_sig() at ast_sig+0x82d/frame 0xfffffe0057096ea0 ast_handler() at ast_handler+0x2b0/frame 0xfffffe0057096f10 ast() at ast+0x25/frame 0xfffffe0057096f30 doreti_ast() at doreti_ast+0x1c/frame 0x827b9cf80 KDB: enter: panic [ thread pid 1140 tid 100614 ] Stopped at kdb_enter+0x6e: movq $0,0x25880a7(%rip) db> db> set $lines = 0 db> set $maxwidth = 0 db> show registers cs 0x20 ds 0x3b es 0x3b fs 0x13 gs 0x1b ss 0x28 rax 0x12 rcx 0xffffffff8165f59e _vprintf+0x1ae rdx 0 rbx 0xffffffff82832300 .str.27 rsp 0xfffffe0057096530 rbp 0xfffffe0057096550 rsi 0 rdi 0xffffffff8165fb09 printf+0x149 r8 0 r9 0xffffffff r10 0 r11 0 r12 0xfffffe0058779780 r13 0xfffffffffffffffd r14 0xffffffff82832300 .str.27 r15 0 rip 0xffffffff81648eee kdb_enter+0x6e rflags 0x46 kdb_enter+0x6e: movq $0,0x25880a7(%rip) db> show proc Process 1140 (syz-executor) at 0xfffffe0058759ab8: state: NORMAL uid: 0 gid: 0 supp gids: 0, 5 parent: pid 768 at 0xfffffe00586df010 ABI: FreeBSD ELF64 flag: 0x18080480 flag2: 0x40000 arguments: ./syz-executor exec reaper: 0xfffffe0007809010 reapsubtree: 1 sigparent: 20 vmspace: 0xfffffe000780f6d8 (map 0xfffffe000780f6d8) (map.pmap 0xfffffe000780f778) (pmap 0xfffffe000780f7e8) threads: 2 100590 s syz-executor 100614 Run CPU 1 syz-executor db>