panic: kernel diagnostic assertion "bp->b_data != NULL" failed: file "/syzkaller/managers/main/kernel/sys/kern/vfs_biomem.c", line 235
Starting stack trace...
panic(ffffffff8278714d) at panic+0x159 sys/kern/subr_prf.c:229
__assert(ffffffff82802b97,ffffffff8281dd2b,eb,ffffffff8283dbd0) at __assert+0x29 sys/kern/subr_prf.c:157
buf_unmap(fffffd807e271270) at buf_unmap+0x1a8 sys/kern/vfs_biomem.c:235
buf_map(fffffd806d287dc0) at buf_map+0x1c7 sys/kern/vfs_biomem.c:117
buf_get(fffffd8064e8b100,c1,4000) at buf_get+0x763 sys/kern/vfs_bio.c:1189
getblk(fffffd8064e8b100,c1,4000,0,ffffffffffffffff) at getblk+0x10d sys/kern/vfs_bio.c:1057
bread_cluster(fffffd8064e8b100,c1,4000,ffff800030f10c80) at bread_cluster+0x59 bio_doread sys/kern/vfs_bio.c:433 [inline]
bread_cluster(fffffd8064e8b100,c1,4000,ffff800030f10c80) at bread_cluster+0x59 sys/kern/vfs_bio.c:596
ffs_read(ffff800030f10ce0) at ffs_read+0x343
VOP_READ(fffffd8064e8b100,ffff800030f10d70,0,fffffd807f7d7410) at VOP_READ+0xc3 sys/kern/vfs_vops.c:227
uvn_io(fffffd8067d91018,ffff800030f10e80,1,202,0) at uvn_io+0x39a
uvn_get(fffffd8067d91018,304000,ffff800030f10f48,ffff800030f10f18,0,3,57c647d916f0fcae,ffffffff81ce2c40) at uvn_get+0x1df sys/uvm/uvm_vnode.c:1110
uvm_fault_lower(ffff800030f110b0,ffff800030f110e8,ffff800030f11030,2) at uvm_fault_lower+0x88a sys/uvm/uvm_fault.c:1284
uvm_fault(fffffd8073ba08b8,1b2cd24000,2,3) at uvm_fault+0x20d
uvm_fault_wire(fffffd8073ba08b8,1b2ca60000,1b2ce20000,3) at uvm_fault_wire+0x63 sys/uvm/uvm_fault.c:1602
uvm_map_pageable_wire(fffffd8073ba08b8,fffffd8069c374c8,0,131,ffffffff81c22300,0) at uvm_map_pageable_wire+0x2cd sys/uvm/uvm_map.c:2190
sys_mlockall(ffff80002db69298,ffff800030f112f0,ffff800030f11340) at sys_mlockall+0x61 sys/uvm/uvm_mmap.c:896
syscall(ffff800030f113b0) at syscall+0x543 sys/arch/amd64/amd64/trap.c:606
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x147c2b72bd0, count: 239
End of stack trace.