Description
In the Linux kernel, the following vulnerability has been resolved: locking/spinlock/debug: Fix data-race in do_raw_write_lock KCSAN reports: BUG: KCSAN: data-race in do_raw_write_lock / do_raw_write_lock write (marked) to 0xffff800009cf504c of 4 bytes by task 1102 on cpu 1: do_raw_write_lock+0x120/0x204 _raw_write_lock_irq do_exit call_usermodehelper_exec_async ret_from_fork read to 0xffff800009cf504c of 4 bytes by task 1103 on cpu 0: do_raw_write_lock+0x88/0x204 _raw_write_lock_irq do_exit call_usermodehelper_exec_async ret_from_fork value changed: 0xffffffff -> 0x00000001 Reported by Kernel Concurrency Sanitizer on: CPU: 0 PID: 1103 Comm: kworker/u4:1 6.1.111 Commit 1a365e822372 ("locking/spinlock/debug: Fix various data races") has adressed most of these races, but seems to be not consistent/not complete. >From do_raw_write_lock() only debug_write_lock_after() part has been converted to WRITE_ONCE(), but not debug_write_lock_before() part. Do it now.
Product status
1a365e822372ba24c9da0822bc583894f6f3d821 (git) before 8e5b2cf10844402054b52b489b525dc30cc16908
1a365e822372ba24c9da0822bc583894f6f3d821 (git) before c228cb699a07a5f2d596d186bc5c314c99bb8bbf
1a365e822372ba24c9da0822bc583894f6f3d821 (git) before 93bd23524d63deb80fb85beb2e43fafeb1043d0f
1a365e822372ba24c9da0822bc583894f6f3d821 (git) before 39d2ef113416f1a4205b03fb0aa2e428d1412c77
1a365e822372ba24c9da0822bc583894f6f3d821 (git) before b163a5e8c703201c905d6ec7920ed79d167e8442
1a365e822372ba24c9da0822bc583894f6f3d821 (git) before 16b3590c0e1e615757dade098c8fbc0d4f040c76
1a365e822372ba24c9da0822bc583894f6f3d821 (git) before 396a9270a7b90886be501611b13aa636f2e8c703
1a365e822372ba24c9da0822bc583894f6f3d821 (git) before c14ecb555c3ee80eeb030a4e46d00e679537f03a
3106fb78d3579c8e9c9b3040f7f7841981919624 (git)
c0911024ff927ba5c4786b507004cb615be1d776 (git)
09226e5c38639437565af01e6009a9286a351d04 (git)
c7673f01604fa722b9d7c1e29e17cec1b8ae09c5 (git)
c120c3dbeb76305235c8e557f84d9e2d7d0f5933 (git)
5.5
Any version before 5.5
5.10.248 (semver)
5.15.198 (semver)
6.1.160 (semver)
6.6.120 (semver)
6.12.62 (semver)
6.17.12 (semver)
6.18.1 (semver)
6.19 (original_commit_for_fix)
References
git.kernel.org/...c/8e5b2cf10844402054b52b489b525dc30cc16908
git.kernel.org/...c/c228cb699a07a5f2d596d186bc5c314c99bb8bbf
git.kernel.org/...c/93bd23524d63deb80fb85beb2e43fafeb1043d0f
git.kernel.org/...c/39d2ef113416f1a4205b03fb0aa2e428d1412c77
git.kernel.org/...c/b163a5e8c703201c905d6ec7920ed79d167e8442
git.kernel.org/...c/16b3590c0e1e615757dade098c8fbc0d4f040c76
git.kernel.org/...c/396a9270a7b90886be501611b13aa636f2e8c703
git.kernel.org/...c/c14ecb555c3ee80eeb030a4e46d00e679537f03a