Re: kern/55493: panic in radixtree

[Patrick Welche <prlw1%cam.ac.uk@localhost>]

The following reply was made to PR kern/55493; it has been noted by GNATS.

From: Patrick Welche <prlw1%cam.ac.uk@localhost>
To: gnats-bugs%netbsd.org@localhost
Cc: 
Subject: Re: kern/55493: panic in radixtree
Date: Fri, 17 Jul 2020 12:48:29 +0100

 This time with line numbers to the source which was a github
 checkout d1534d74f37a40398e2a9cb8129e38ea170bccb7:
 
 (gdb) thread apply all bt
 
 Thread 2.1 (<kvm>):
 #0  0xffffffff80225835 in cpu_reboot (howto=howto@entry=260, bootstr=bootstr@entry=0x0) at /usr/src/local/netbsd/src/sys/arch/amd64/amd64/machdep.c:713
 #1  0xffffffff80cc660f in kern_reboot (howto=howto@entry=260, bootstr=bootstr@entry=0x0) at /usr/src/local/netbsd/src/sys/kern/kern_reboot.c:73
 #2  0xffffffff80d07f0e in vpanic (fmt=0xffffffff81354908 "kernel %sassertion \"%s\" failed: file \"%s\", line %d ", ap=ap@entry=0xffff88829ff843b8) at /usr/src/local/netbsd/src/sys/kern/subr_prf.c:290
 #3  0xffffffff80e7e796 in kern_assert (fmt=fmt@entry=0xffffffff81354908 "kernel %sassertion \"%s\" failed: file \"%s\", line %d ") at /usr/src/local/netbsd/src/sys/lib/libkern/kern_assert.c:51
 #4  0xffffffff80e6750d in radix_tree_lookup_ptr (tagmask=0, alloc=true, path=0x0, idx=761, t=0xffffad54ce539298) at /usr/src/local/netbsd/src/sys/lib/libkern/../../../common/lib/libc/gen/radixtree.c:671
 #5  radix_tree_insert_node (t=t@entry=0xffffad54ce539298, idx=idx@entry=761, p=p@entry=0xffff888017fbb280) at /usr/src/local/netbsd/src/sys/lib/libkern/../../../common/lib/libc/gen/radixtree.c:668
 #6  0xffffffff80c75f9b in uvm_pageinsert_tree (pg=0xffff888017fbb280, uobj=0xffffad54ce539280) at /usr/src/local/netbsd/src/sys/uvm/uvm_page.c:243
 #7  uvm_pagealloc_strat (obj=obj@entry=0xffffad54ce539280, off=off@entry=3117056, anon=anon@entry=0x0, flags=0, strat=<optimized out>, free_list=<optimized out>) at /usr/src/local/netbsd/src/sys/uvm/uvm_page.c:1311
 #8  0xffffffff80c5258b in uao_pagealloc (flags=0, offset=3117056, uobj=0xffffad54ce539280) at /usr/src/local/netbsd/src/sys/uvm/uvm_aobj.c:537
 #9  uao_get (uobj=0xffffad54ce539280, offset=<optimized out>, pps=0xffff88829ff84650, npagesp=<optimized out>, centeridx=<optimized out>, access_type=<optimized out>, advice=0, flags=6146) at /usr/src/local/netbsd/src/sys/uvm/uvm_aobj.c:954
 #10 0xffffffff80c561af in ubc_fault (ufi=0xffff88829ff84790, ign1=<optimized out>, ign2=<optimized out>, ign3=<optimized out>, ign4=<optimized out>, access_type=1, flags=<optimized out>) at /usr/src/local/netbsd/src/sys/uvm/uvm_bio.c:382
 #11 0xffffffff80c5c987 in uvm_fault_internal (orig_map=orig_map@entry=0xffffffff81915700 <kernel_map_store>, vaddr=vaddr@entry=18446612692453982208, access_type=access_type@entry=1, fault_flag=fault_flag@entry=0) at /usr/src/local/netbsd/src/sys/uvm/uvm_fault.c:918
 #12 0xffffffff802273c6 in trap (frame=0xffff88829ff84a30) at /usr/src/local/netbsd/src/sys/arch/amd64/amd64/trap.c:520
 #13 0xffffffff8022008d in alltraps ()
 #14 0xffffffff8021f943 in copyout ()
 #15 0xffffffff80cf0fc1 in copyout_vmspace (vm=<optimized out>, kaddr=<optimized out>, uaddr=<optimized out>, len=<optimized out>) at /usr/src/local/netbsd/src/sys/kern/subr_copy.c:251
 #16 0xffffffff80cf1098 in uiomove (buf=buf@entry=0xffff88826aee8000, n=14919, uio=uio@entry=0xffff88829ff84de0) at /usr/src/local/netbsd/src/sys/kern/subr_copy.c:130
 #17 0xffffffff80c56c21 in ubc_uiomove (uobj=uobj@entry=0xffffad54ce539280, uio=uio@entry=0xffff88829ff84de0, todo=14919, advice=advice@entry=0, flags=265) at /usr/src/local/netbsd/src/sys/uvm/uvm_bio.c:775
 #18 0xffffffff80b93aec in tmpfs_read (v=<optimized out>) at /usr/src/local/netbsd/src/sys/fs/tmpfs/tmpfs_vnops.c:553
 #19 0xffffffff80d7dbcf in VOP_READ (vp=vp@entry=0xffffad5234bd5340, uio=uio@entry=0xffff88829ff84de0, ioflag=ioflag@entry=0, cred=cred@entry=0xffffad50d222c640) at /usr/src/local/netbsd/src/sys/kern/vnode_if.c:504
 #20 0xffffffff80d74ddc in vn_read (fp=<optimized out>, offset=0xffff88829ff84e58, uio=0xffff88829ff84de0, cred=0xffffad50d222c640, flags=0) at /usr/src/local/netbsd/src/sys/kern/vfs_vnops.c:572
 #21 0xffffffff80d18bc8 in dofileread (fd=fd@entry=17, fp=fp@entry=0xffffad54347e7d80, buf=0x7465900ee750, nbyte=62932, offset=offset@entry=0xffff88829ff84e58, flags=flags@entry=0, retval=retval@entry=0xffff88829ff84eb0) at /usr/src/local/netbsd/src/sys/kern/sys_generic.c:156
 #22 0xffffffff80d6af9e in sys_pread (l=<optimized out>, uap=0xffff88829ff84f00, retval=0xffff88829ff84eb0) at /usr/src/local/netbsd/src/sys/kern/vfs_syscalls.c:2947
 #23 0xffffffff80553363 in sy_call (rval=0xffff88829ff84eb0, uap=0xffff88829ff84f00, l=0xffffad514e13a240, sy=0xffffffff81889df8 <sysent+4152>) at /usr/src/local/netbsd/src/sys/sys/syscallvar.h:65
 #24 sy_invoke (code=173, rval=0xffff88829ff84eb0, uap=0xffff88829ff84f00, l=0xffffad514e13a240, sy=0xffffffff81889df8 <sysent+4152>) at /usr/src/local/netbsd/src/sys/sys/syscallvar.h:94
 #25 syscall (frame=0xffff88829ff84f00) at /usr/src/local/netbsd/src/sys/arch/x86/x86/syscall.c:138
 #26 0xffffffff8020a22d in handle_syscall ()