panic: kernel diagnostic assertion "ISSET(p->p_flag, P_SUSPSIG | P_SUSPSINGLE) == 0" failed: file "/syzkaller/managers/multicore/kernel/sys/kern/kern_sig.c", line 1602 Starting stack trace... panic(ffffffff834b9973) at panic+0x1d0 sys/kern/subr_prf.c:229 __assert(ffffffff834fc1af,ffffffff83468065,642,ffffffff8344a532) at __assert+0x29 sys/kern/subr_prf.c:-1 process_stop(ffff80003c3cf9e0,8000000,1) at process_stop+0x3fe cursig(ffff80003c3e3250,ffff80003c3ef928,0) at cursig+0x509 x86_atomic_setbits_u32 sys/arch/amd64/compile/SYZKALLER/obj/machine/atomic.h:-1 [inline] cursig(ffff80003c3e3250,ffff80003c3ef928,0) at cursig+0x509 sys/kern/kern_sig.c:1445 userret(ffff80003c3e3250) at userret+0x203 sys/kern/kern_sig.c:2207 syscall(ffff80003c3efa60) at syscall+0x9ce mi_syscall_return sys/sys/syscall_mi.h:203 [inline] syscall(ffff80003c3efa60) at syscall+0x9ce sys/arch/amd64/amd64/trap.c:804 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x37f39ecd240, count: 250 End of stack trace. syncing disks...