panic: kernel diagnostic assertion "part >= 0 && part < MAXPARTITIONS" failed: file "/syzkaller/managers/multicore/kernel/sys/kern/subr_disk.c", line 1169
Starting stack trace...
panic(ffffffff833a13e1) at panic+0x1d0 sys/kern/subr_prf.c:229
__assert(ffffffff833de65a,ffffffff833bbce4,491,ffffffff833cf36a) at __assert+0x29 sys/kern/subr_prf.c:-1
disk_openpart(ffff800000b29188,3f,2000,0) at disk_openpart+0x20d
vndopen(29ff,1,2000,ffff8000377f5260) at vndopen+0x222 sys/dev/vnd.c:203
spec_open(ffff80003c43b148) at spec_open+0x2d9 sys/kern/spec_vnops.c:150
VOP_OPEN(fffffd805db61370,1,fffffd80097fd340,ffff8000377f5260) at VOP_OPEN+0x8b sys/kern/vfs_vops.c:138
vn_open(ffff80003c43b390,1,0) at vn_open+0x6a0 sys/kern/vfs_vnops.c:177
doopenat(ffff8000377f5260,ffffff9c,2000000002c0,0,0,ffff80003c43b540) at doopenat+0x35b sys/kern/vfs_syscalls.c:1138
syscall(ffff80003c43b5f0) at syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline]
syscall(ffff80003c43b5f0) at syscall+0xbd4 sys/arch/amd64/amd64/trap.c:765
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0xe2895190370, count: 247
End of stack trace.