Date: Thu, 16 Jun 2016 08:47:29 +0000 From: bugzilla-noreply@freebsd.org To: freebsd-fs@FreeBSD.org Subject: [Bug 210316] panic after trying to r/w mount msdosfs on write protected media Message-ID: <bug-210316-3630-RxmnyCvFHm@https.bugs.freebsd.org/bugzilla/> In-Reply-To: <bug-210316-3630@https.bugs.freebsd.org/bugzilla/> References: <bug-210316-3630@https.bugs.freebsd.org/bugzilla/>
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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D210316 --- Comment #1 from Andriy Gapon <avg@FreeBSD.org> --- My preliminary analysis of the problem. mountmsdosfs() calls markvoldirty() near the end. markvoldirty() failed because of the read-only media. bwrite() called brelse() which marked the buffer as dirty because of the write error. Because of the markvoldirty() failure mountmsdosfs() failed over all and, thus, it called g_vfs_destroy() which destroyed the filesystem's geom. When the syncer tried to sync the di= rty buffer later on g_vfs_strategy9) accessed the destroyed consumer / geom and that resulted in a crash. --=20 You are receiving this mail because: You are the assignee for the bug.=
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