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Description: blktrace: debugfs_remove use-after-free
References:
https://bugzilla.kernel.org/show_bug.cgi?id=205713
https://syzkaller.appspot.com/bug?extid=903b72a010ad6b7a40f2
https://lore.kernel.org/lkml/20200206111052.45356-1-yukuai3@huawei.com/
https://lore.kernel.org/linux-block/20200402000002.7442-1-mcgrof@kernel.org/
Notes:
bwh> Note that only root can access debugfs by default.
carnil> Commit landed in 5.7.16, 5.8.2 as well.
Bugs:
upstream: released (5.9-rc1) [bad8e64fb19d3a0de5e564d9a7271c31bd684369]
4.19-upstream-stable: needed
4.9-upstream-stable:
3.16-upstream-stable: ignored "EOL"
sid: pending (5.7.16-1)
4.19-buster-security: needed
4.9-stretch-security:
3.16-jessie-security: ignored "EOL"
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