panic: kernel diagnostic assertion "pg->wire_count == 1" failed : file "/syzkaller/managers/main/kernel/sys/kern/vfs_biomem.c", line 310 Starting stack trace... panic(ffffffff830afb12) at panic+0x1ba sys/kern/subr_prf.c:229 __assert(ffffffff83067464,ffffffff83077cc6,136,ffffffff82ff26ea) at __assert+0x29 buf_free_pages(fffffd8070371138) at buf_free_pages+0x23d sys/kern/vfs_biomem.c:299 buf_dealloc_mem(fffffd8070371138) at buf_dealloc_mem+0x14e sys/kern/vfs_biomem.c:179 buf_put(fffffd8070371138) at buf_put+0x1dc sys/kern/vfs_bio.c:127 brelse(fffffd8070371138) at brelse+0x395 sys/kern/vfs_bio.c:944 vinvalbuf(fffffd80679852e8,3,fffffd807f7d73a8,ffff80002a4b0010,0,ffffffffffffffff) at vinvalbuf+0x52c sys/kern/vfs_subr.c:2022 ffs_truncate(fffffd807b94a010,41000000007,4,fffffd807f7d73a8) at ffs_truncate+0xf63 ffs_write(ffff80002a5b7940) at ffs_write+0xbab sys/ufs/ffs/ffs_vnops.c:401 VOP_WRITE(fffffd80679852e8,ffff80002a5b7ae8,7,fffffd807f7d73a8) at VOP_WRITE+0x102 sys/kern/vfs_vops.c:245 vn_write(fffffd8073cf8798,ffff80002a5b7ae8,0) at vn_write+0x1c3 sys/kern/vfs_vnops.c:408 dofilewritev(ffff80002a4b0010,6,ffff80002a5b7ae8,0,ffff80002a5b7ba0) at dofilewritev+0x23c sys/kern/sys_generic.c:380 sys_write(ffff80002a4b0010,ffff80002a5b7c50,ffff80002a5b7ba0) at sys_write+0xa2 sys/kern/sys_generic.c:300 syscall(ffff80002a5b7c50) at syscall+0x97e sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x21f14b3d910, count: 242 End of stack trace.