Vulnerability CVE-2024-38780
Published: 2024-06-21

Description:
In the Linux kernel, the following vulnerability has been resolved:

dma-buf/sw-sync: don't enable IRQ from sync_print_obj()

Since commit a6aa8fca4d79 ("dma-buf/sw-sync: Reduce irqsave/irqrestore from
known context") by error replaced spin_unlock_irqrestore() with
spin_unlock_irq() for both sync_debugfs_show() and sync_print_obj() despite
sync_print_obj() is called from sync_debugfs_show(), lockdep complains
inconsistent lock state warning.

Use plain spin_{lock,unlock}() for sync_print_obj(), for
sync_debugfs_show() is already using spin_{lock,unlock}_irq().

 References:
https://git.kernel.org/stable/c/1ff116f68560a25656933d5a18e7619cb6773d8a
https://git.kernel.org/stable/c/165b25e3ee9333f7b04f8db43895beacb51582ed
https://git.kernel.org/stable/c/ae6fc4e6a3322f6d1c8ff59150d8469487a73dd8
https://git.kernel.org/stable/c/9d75fab2c14a25553a1664586ed122c316bd1878
https://git.kernel.org/stable/c/242b30466879e6defa521573c27e12018276c33a
https://git.kernel.org/stable/c/a4ee78244445ab73af22bfc5a5fc543963b25aef
https://git.kernel.org/stable/c/8a283cdfc8beeb14024387a925247b563d614e1e
https://git.kernel.org/stable/c/b794918961516f667b0c745aebdfebbb8a98df39
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