€ € € € € [ 85.0524335] panic: UBSan: Undefined Behavior in /syzkaller/managers/netbsd-kubsan/kernel/sys/kern/vfs_lockf.c:847:10, signed integer overflow: -9079897778161975317 + -7357113568366515666 cannot be represented in type 'long int' [ 85.0724623] cpu1: Begin traceback... [ 85.1025223] vpanic() at netbsd:vpanic+0x2aa sys/kern/subr_prf.c:336 [ 85.1526222] isAlreadyReported() at netbsd:isAlreadyReported [ 85.2127404] HandleOverflow() at netbsd:HandleOverflow+0x1fb sys/../common/lib/libc/misc/ubsan.c:360 [ 85.2628362] lf_advlock() at netbsd:lf_advlock+0x2326 sys/kern/vfs_lockf.c:847 [ 85.3129333] VOP_ADVLOCK() at netbsd:VOP_ADVLOCK+0x12c sys/kern/vnode_if.c:1518 [ 85.3630308] do_fcntl_lock() at netbsd:do_fcntl_lock+0x3dd sys/kern/sys_descrip.c:283 [ 85.4131318] sys_fcntl() at netbsd:sys_fcntl+0x115 sys/kern/sys_descrip.c:380 [ 85.4632259] sys___syscall() at netbsd:sys___syscall+0x1c8 sy_call sys/sys/syscallvar.h:65 [inline] [ 85.4632259] sys___syscall() at netbsd:sys___syscall+0x1c8 sys/kern/sys_syscall.c:77 [ 85.5233455] syscall() at netbsd:syscall+0x29a sy_call sys/sys/syscallvar.h:65 [inline] [ 85.5233455] syscall() at netbsd:syscall+0x29a sy_invoke sys/sys/syscallvar.h:94 [inline] [ 85.5233455] syscall() at netbsd:syscall+0x29a sys/arch/x86/x86/syscall.c:138 [ 85.5333632] --- syscall (number 198) --- [ 85.5433825] Skipping crash dump on recursive panic [ 85.5433825] panic: UBSan: Undefined Behavior in /syzkaller/managers/netbsd-kubsan/kernel/sys/arch/amd64/amd64/db_machdep.c:153:24, member access within misaligned address 0x3 for type 'struct x86_64_frame' which requires 8 byte alignment [ 85.5634220] Faulted in mid-traceback; aborting... [ 85.5734385] fatal breakpoint trap in supervisor mode [ 85.5734385] trap type 1 code 0 rip 0xffffffff8021ddbd cs 0x8 rflags 0x286 cr2 0x7de871200000 ilevel 0 rsp 0xffffb880b3c92840 [ 85.5834584] curlwp 0xffff81a53f865280 pid 1369.6 lowest kstack 0xffffb880b3c902c0 Stopped in pid 1369.6 (syz-executor.0) at netbsd:breakpoint+0x5: leave ? breakpoint() at netbsd:breakpoint+0x5 db_panic() at netbsd:db_panic+0x109 sys/ddb/db_panic.c:67 vpanic() at netbsd:vpanic+0x2aa sys/kern/subr_prf.c:336 isAlreadyReported() at netbsd:isAlreadyReported HandleTypeMismatch.part.1() at netbsd:HandleTypeMismatch.part.1+0xcc HandleTypeMismatch() at netbsd:HandleTypeMismatch+0x7b sys/../common/lib/libc/misc/ubsan.c:408 db_nextframe() at netbsd:db_nextframe+0x6f6 sys/arch/amd64/amd64/db_machdep.c:153 db_stack_trace_print() at netbsd:db_stack_trace_print+0x2c4 sys/arch/x86/x86/db_trace.c:277 db_panic() at netbsd:db_panic+0xa3 x86_curcpu sys/arch/amd64/compile/obj/GENERIC_SYZKALLER/./machine/cpu.h:67 [inline] db_panic() at netbsd:db_panic+0xa3 sys/ddb/db_panic.c:57 vpanic() at netbsd:vpanic+0x2aa sys/kern/subr_prf.c:336 isAlreadyReported() at netbsd:isAlreadyReported HandleOverflow() at netbsd:HandleOverflow+0x1fb sys/../common/lib/libc/misc/ubsan.c:360 lf_advlock() at netbsd:lf_advlock+0x2326 sys/kern/vfs_lockf.c:847 VOP_ADVLOCK() at netbsd:VOP_ADVLOCK+0x12c sys/kern/vnode_if.c:1518 do_fcntl_lock() at netbsd:do_fcntl_lock+0x3dd sys/kern/sys_descrip.c:283 sys_fcntl() at netbsd:sys_fcntl+0x115 sys/kern/sys_descrip.c:380 sys___syscall() at netbsd:sys___syscall+0x1c8 sy_call sys/sys/syscallvar.h:65 [inline] sys___syscall() at netbsd:sys___syscall+0x1c8 sys/kern/sys_syscall.c:77 syscall() at netbsd:syscall+0x29a sy_call sys/sys/syscallvar.h:65 [inline] syscall() at netbsd:syscall+0x29a sy_invoke sys/sys/syscallvar.h:94 [inline] syscall() at netbsd:syscall+0x29a sys/arch/x86/x86/syscall.c:138 --- syscall (number 198) --- [ 85.5934777] Skipping crash dump on recursive panic [ 85.5934777] panic: UBSan: Undefined Behavior in /syzkaller/managers/netbsd-kubsan/kernel/sys/arch/amd64/amd64/db_machdep.c:154:14, member access within misaligned address 0x3 for type 'struct x86_64_frame' which requires 8 byte alignment [ 85.5934777] Faulted in mid-traceback; aborting... [ 85.5934777] fatal breakpoint trap in supervisor mode [ 85.5934777] trap type 1 code 0 rip 0xffffffff8021ddbd cs 0x8 rflags 0x286 cr2 0x7de871200000 ilevel 0x8 rsp 0xffffb880b3c91540 [ 85.5934777] curlwp 0xffff81a53f865280 pid 1369.6 lowest kstack 0xffffb880b3c902c0 Stopped in pid 1369.6 (syz-executor.0) at netbsd:breakpoint+0x5: leave