Date: Mon, 30 Apr 2018 06:49:41 +0000 From: bugzilla-noreply@freebsd.org To: fs@FreeBSD.org Subject: [Bug 210316] panic after trying to r/w mount msdosfs on write protected media Message-ID: <bug-210316-3630-CGCrCLhjTS@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=210316 --- Comment #6 from Damjan Jovanovic <damjan.jov@gmail.com> --- Repeating that test with UFS (newfs -U -j) also freezes the system, so sadly msdosfs is not the only filesystem affected. Using the ext2fs driver on a read-only EXT3 filesystem however works, printing some errors in dmesg: g_vfs_done():ggate0[WRITE(offset=1024, length=1024)]error = 1 g_vfs_done():ggate0[WRITE(offset=1024, length=1024)]error = 1 g_vfs_done():ggate0[WRITE(offset=2048, length=1024)]error = 1 g_vfs_done():ggate0[WRITE(offset=268288, length=1024)]error = 1 g_vfs_done():ggate0[WRITE(offset=268288, length=1024)]error = 1 but it mounts successfully, denies writes with EPERM, and doesn't crash. Unmounting however fails, with this ominous error: fsync: giving up on dirty (error = 1) 0xfffff801df6a45a0: tag devfs, type VCHR usecount 1, writecount 0, refcount 7 rdev 0xfffff800d1092800 flags (VI_ACTIVE) v_object 0xfffff80146eb3900 ref 0 pages 2 cleanbuf 1 dirtybuf 4 lock type devfs: EXCL by thread 0xfffff800d1017000 (pid 1494, umount, tid 100515) dev ggate0 but still no crash. -- You are receiving this mail because: You are the assignee for the bug.
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