gfs2: fiemap page fault fix
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In the Linux kernel, the following vulnerability has been resolved:
gfs2: fiemap page fault fix
In gfs2_fiemap(), we are calling iomap_fiemap() while holding the inode
glock. This can lead to recursive glock taking if the fiemap buffer is
memory mapped to the same inode and accessing it triggers a page fault.
Fix by disabling page faults for iomap_fiemap() and faulting in the
buffer by hand if necessary.
Fixes xfstest generic/742.
Produtos afetados
Linux · LinuxReferências
https://git.kernel.org/stable/c/2e121c53b581e40397ae08090a7af4ed10781fbchttps://git.kernel.org/stable/c/5d2c4f182ea8516de8682e2b60411c03df00e3eahttps://git.kernel.org/stable/c/5d5d9ec957bfa1eb2b05861c19f5d701dd006db7https://git.kernel.org/stable/c/9d15fee888f0e8938c9aeed71ec9c2cbba0c88abhttps://git.kernel.org/stable/c/cead3bebf3e318578b8a86a5472015d713d2a8a8https://git.kernel.org/stable/c/e411d74cc5ba290f85d0dd5e4d1df8f1d6d975d2https://git.kernel.org/stable/c/e428670cfb2993d8c224effd076242ca6b0950de