Re: kern/56900 (panic in uvm_map_findspace)

[Rin Okuyama <rokuyama.rk%gmail.com@localhost>]

The following reply was made to PR kern/56900; it has been noted by GNATS.

From: Rin Okuyama <rokuyama.rk%gmail.com@localhost>
To: gnats-bugs%netbsd.org@localhost, kern-bug-people%netbsd.org@localhost,
 netbsd-bugs%netbsd.org@localhost, gnats-admin%netbsd.org@localhost, riastradh%NetBSD.org@localhost
Cc: 
Subject: Re: kern/56900 (panic in uvm_map_findspace)
Date: Fri, 25 Nov 2022 22:55:59 +0900

 Unfortunately, similar panic still takes place on sh3.
 Seems like something wrong in sh3/pmap...
 
 ----
 # cd /usr/tests && atf-run | atf-report
 ...
 bin/sh/t_here (17/926): 11 test cases
      do_simple: [9.487045s] Passed.
      end_markers: [ 2036.0781860] panic: kernel diagnostic assertion "!topdown || hint <= orig_hint" failed: file "../../../../uvm/uvm_map.c", line 1795 map=0x8fe48d68 hint=0x7defb000 orig_hint=0x75172000 length=0x1000 uobj=0x8fd5eaa0 uoffset=0 align=0 flags=0x101 entry=0x8dfc6864 (uvm_map_findspace line 2011)
 [ 2036.3769339] cpu0: Begin traceback...
 [ 2036.4219435] db_panic() at netbsd:vpanic+0x106
 [ 2036.4721571] vpanic() at netbsd:kern_assert+0x24
 [ 2036.5313130] kern_assert() at netbsd:uvm_findspace_invariants+0x60
 [ 2036.6094391] uvm_findspace_invariants() at netbsd:uvm_map_findspace+0x1fc
 [ 2036.6875748] uvm_map_findspace() at netbsd:uvm_map_prepare+0x1ac
 [ 2036.7557294] uvm_map_prepare() at netbsd:uvm_map+0xaa
 [ 2036.8164256] uvm_map() at netbsd:uvm_mmap+0x166
 [ 2036.8750653] uvm_mmap() at netbsd:sys_mmap+0x250
 [ 2036.9263064] sys_mmap() at netbsd:syscall+0xba
 [ 2036.9844405] syscall() at 8c0001b2
 [ 2037.0204721] <EXPEVT 160; SSR=00000100> at 7515ad38
 [ 2037.0790696] [trapframe 0x3]
 [ 2037.1157066]    sr=00000100   gbr=00000000    pc=7515ad38     pr=7515ad0c
 [ 2037.1973148]    r0=000000c5    r1=00000028    r2=00000000     r3=00000000
 [ 2037.2789350]    r4=00000000    r6=00001000    r7=00000001     r8=00000001
 [ 2037.3605556]    r5=7514a400    r9=7ff32f90   r10=7ff32ee8    r11=7514a4bc
 [ 2037.4421819]   r12=75170ec8   r13=7514a47c   r14=00000003 sp=r15=7ff32e28
 [ 2037.5237959] cpu0: End traceback...
 Stopped in pid 26312.26312 (sh) at      netbsd:cpu_Debugger+0x6:        mov
 r14, r15
 db>
 ----
 
 Thanks,
 rin