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kern/56971: WAPBL panic on recent current on amd64



>Number:         56971
>Category:       kern
>Synopsis:       Deleting large files can panic a current amd64 kernel
>Confidential:   no
>Severity:       critical
>Priority:       high
>Responsible:    kern-bug-people
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Thu Aug 18 18:10:00 +0000 2022
>Originator:     john%ziaspace.com@localhost
>Release:        NetBSD 9.99.99
>Organization:
	
>Environment:
	
	
System: NetBSD hera.zia.io 9.99.99 NetBSD 9.99.99 (FRIGG) #0: Fri Jul 22 02:36:42 UTC 2022 john%hera.zia.io@localhost:/usr/obj-amd64/sys/arch/amd64/compile/FRIGG amd64
Architecture: x86_64
Machine: amd64
>Description:
	
While deleting some directories with large numbers of file and some very large files,
my system paniced. I don't know what file(s) or size(s) were involved because I was
deleting many files at the same time.

[ 2253687.119460] panic: wapbl_flush: current transaction too big to flush
[ 2253687.119460] cpu0: Begin traceback...
[ 2253687.119460] vpanic() at netbsd:vpanic+0x177
[ 2253687.119460] panic() at netbsd:panic+0x3c
[ 2253687.119460] wapbl_flush() at netbsd:wapbl_flush+0x7a0
[ 2253687.119460] wapbl_begin() at netbsd:wapbl_begin+0x5b
[ 2253687.119460] ufs_truncate_retry() at netbsd:ufs_truncate_retry+0x96
[ 2253687.119460] ufs_inactive() at netbsd:ufs_inactive+0xef
[ 2253687.119460] VOP_INACTIVE() at netbsd:VOP_INACTIVE+0x36
[ 2253687.119460] vrelel() at netbsd:vrelel+0x150
[ 2253687.119460] ufs_remove() at netbsd:ufs_remove+0x50
[ 2253687.119460] VOP_REMOVE() at netbsd:VOP_REMOVE+0x5a
[ 2253687.129460] do_sys_unlinkat.isra.0() at netbsd:do_sys_unlinkat.isra.0+0x219
[ 2253687.129460] syscall() at netbsd:syscall+0x1f2
[ 2253687.129460] --- syscall (number 10) ---
[ 2253687.129460] netbsd:syscall+0x1f2:
[ 2253687.129460] cpu0: End traceback...

[ 2253687.129460] dumping to dev 168,2 (offset=134287, size=16760430):
[ 2253687.129460] dump [   1.0000000] 




>How-To-Repeat:
	
>Fix:
	

>Unformatted:
 	
 	


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