panic: kernel diagnostic assertion "ISSET(bp->b_flags, B_BC)" failed: file "/syzkaller/managers/main/kernel/sys/kern/vfs_bio.c", line 1683
Starting stack trace...
panic(ffffffff82939523) at panic+0x159 sys/kern/subr_prf.c:229
__assert(ffffffff828ec351,ffffffff82931174,693,ffffffff828d29d0) at __assert+0x29 sys/kern/subr_prf.c:157
bufcache_take(fffffd806700fe50) at bufcache_take+0x254 sys/kern/vfs_bio.c:1684
getblk(fffffd807b031db0,0,4000,0,ffffffffffffffff) at getblk+0x17e sys/kern/vfs_bio.c:1037
bread(fffffd807b031db0,0,4000,ffff80002f534dc8) at bread+0x3e bio_doread sys/kern/vfs_bio.c:430 [inline]
bread(fffffd807b031db0,0,4000,ffff80002f534dc8) at bread+0x3e sys/kern/vfs_bio.c:475
ffs_bufatoff(fffffd806b3da6a0,0,0,ffff80002f534e90) at ffs_bufatoff+0x127 sys/ufs/ffs/ffs_subr.c:71
ufs_lookup() at ufs_lookup+0x426 sys/ufs/ufs/ufs_lookup.c:256
VOP_LOOKUP(fffffd807b031db0,ffff80002f5351e0,ffff80002f535210) at VOP_LOOKUP+0x5c sys/kern/vfs_vops.c:85
vfs_lookup(ffff80002f5351b0) at vfs_lookup+0x6df sys/kern/vfs_lookup.c:566
namei(ffff80002f5351b0) at namei+0x56a sys/kern/vfs_lookup.c:250
domknodat(ffff80002a6aed08,ffffff9c,20000000,2000,45dc8) at domknodat+0x95 sys/kern/vfs_syscalls.c:1579
syscall(ffff80002f5353b0) at syscall+0x72a sys/arch/amd64/amd64/trap.c:577
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x11525b3d6f0, count: 244
End of stack trace.