Date: Fri, 08 Jan 2016 03:53:54 +0000 From: bugzilla-noreply@freebsd.org To: freebsd-bugs@FreeBSD.org Subject: [Bug 205932] [panic] Kernel panic when copying from ext2fs partition to UFS partition Message-ID: <bug-205932-8-Ga8qF1uJ9e@https.bugs.freebsd.org/bugzilla/> In-Reply-To: <bug-205932-8@https.bugs.freebsd.org/bugzilla/> References: <bug-205932-8@https.bugs.freebsd.org/bugzilla/>
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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=205932 Damjan Jovanovic <damjan.jov@gmail.com> changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |damjan.jov@gmail.com --- Comment #4 from Damjan Jovanovic <damjan.jov@gmail.com> --- sys_write -> write -> ext2_bmap -> ext4_ext_find_extent -> ... -> panic, so looks like a memory mapped file is being written, during which reading from the mapped memory causes a panic. It seems a specific file is causing this (as opposed to iteration over the filesystem). You could try to narrow it down - use "find" to find the 100th or so file you suspect, and then copy the files you suspect are causing the panic to narrow it down to the single file that actually does. I suspect that file is sparse, causing a different manifestation of bug 205816 (panic instead of garbage data). Could you test the patch from there? -- You are receiving this mail because: You are the assignee for the bug.
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