Re: kern/52364: System hangs not much before showing the login prompt; changes in VFS suspected

[Mateusz Poszwa <old4%o2.pl@localhost>]

The following reply was made to PR kern/52364; it has been noted by GNATS.

From: Mateusz Poszwa <old4%o2.pl@localhost>
To: gnats-bugs%NetBSD.org@localhost
Cc: 
Subject: Re: kern/52364: System hangs not much before showing the login
 prompt; changes in VFS suspected
Date: Wed, 5 Jul 2017 20:50:46 +0200

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 At first I collected two core dumps, but I figured out
 that I had to set ddb.onpanic=1 in /ets/sysctl.conf
 
 Some of the output went off the screen.
 I attach what I managed to capture.
 
 I can also host the mentioned core dumps if that helps.
 
 Thank you.
 
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 	usecount 3 writecount 2 holdcount 0
 	size 0 writesize 0 numoutput 0
 	data 0xfffffe815edbbd00 lock 0xfffffe8107f0d910
 	state ACTIVE key(0xfffffe815edc0008 8) 07 4f 1d 00 00 00 00 00
 	lrulisthd 0xffffffff815ad400
 	tag VT_UFS, ino 1920775 on dev 0, 0 flags 0x2010, nlink 1
 	mode 020622, owner 0, group 4, size 0
 Fstrans locks by lwp:
 481.1    (/) shared 1 cow 0
 959.1    (/) shared 1 cow 0
 893.1    (/) shared 1 cow 0
 498.1    (/) shared 1 cow 0
 920.1    (/) shared 1 cow 0
 813.1    (/) shared 1 cow 0
 848.1    (/) shared 1 cow 0
 846.1    (/) shared 1 cow 0
 766.1    (/) shared 2 cow 0
 380.1    (/) shared 1 cow 0
 436.1    (/) shared 1 cow 0
 809.1    (/) shared 1 cow 0
 662.1    (/) shared 1 cow 0
 900.1    (/) shared 2 cow 0
 835.1    (/) shared 1 cow 0
 437.1    (/) shared 2 cow 0
 743.1    (/) shared 2 cow 0
 906.1    (/) shared 2 cow 0
 1007.1   (/) shared 2 cow 0
 881.1    (/) shared 1 cow 0
 923.1    (/) shared 1 cow 0
 435.1    (/) shared 1 cow 0
 442.1    (/) shared 1 cow 0
 921.1    (/) shared 1 cow 0
 887.1    (/) shared 2 cow 0
 891.1    (/) shared 2 cow 0
 108.1    (/) shared 1 cow 0
 587.1    (/) shared 1 cow 0
 682.1    (/) shared 1 cow 0
 552.1    (/) shared 1 cow 0
 Fstrans state by mount:
 Fstrans locks by lwp:
 108.1    (/) shared 1 cow 0
 587.1    (/) shared 1 cow 0
 682.1    (/) shared 1 cow 0
 552.1    (/) shared 1 cow 0
 Fstrans state by mount:
 /	      	 state suspended
 panic: fstrans_setstate timed out after 5 seconds
 fatal breakpoint trap in supervisor mode
 trap type 1 code 0 rip 0xffffffff802157d5 cs 0x8 rflags 0x246 cr2 0x7d88eb568270 ilevel 0 rsp 0xfffffe8040017bc0
 curlwp 0xfffffe815edcbd20 pid 12.1 lowest ksstack 0xfffffe80400142c0
 Stopped in pid 12.1 (sh) at     netbsd:breakpoint+0x5:  leave
 breakpiont() at netbsd:breakpoint+0x5
 vpanic() at netbsd:vpanic+0x1cd
 panic() at netbsd:panic+0x43
 fstrans_setstate() at netbsd:fstrans_setstate+0x1c9
 genfs_suspendctl() at netbsd:genfs_suspendctl+0x37
 VFS_SUSPENDCTL() at netbsd:VFS_SUSPENDCTL+0x2d
 vfs_suspend() at netbsd:vfs_suspend+0x55
 vrevoke() at netbsd:vrevoke0x46
 genfs_revoke() at netbsd:genfs_revoke+0x13
 VOP_REVOKE() at netbsd:VOP_REVOKE+0x42
 exit1() at netbsd:exit1+0x2d0
 sys_exit() at netbsd:sys_exit+0x47
 syscall() at netbsd:syscall+0xd8
 --- syscall (number 1) ---
 7d6381b1bc1a:
 db{2}> 
 
 --0OAP2g/MAC+5xKAE--