CVE-2022-50724

In the Linux kernel, the following vulnerability has been resolved: regulator: core: fix resource leak in regulator_register() I got some resource leak reports while doing fault injection test: OF: ERROR: memory leak, expected refcount 1 instead of 100, of_node_get()/of_node_put() unbalanced - destroy cset entry: attach overlay node /i2c/pmic@64/regulators/buck1 unreferenced object 0xffff88810deea000 (size 512): comm "490-i2c-rt5190a", pid 253, jiffies 4294859840 (age 5061.046s) hex dump (first 32 bytes): 00 00 00 00 ad 4e ad de ff ff ff ff 00 00 00 00 .....N.......... ff ff ff ff ff ff ff ff a0 1e 00 a1 ff ff ff ff ................ backtrace: [ ] kmalloc_trace+0x21/0x110 [ ] device_private_init+0x32/0xd0 [ ] device_add+0xb2d/0x1030 [ ] regulator_register+0xaf2/0x12a0 [ ] devm_regulator_register+0x57/0xb0 [ ] rt5190a_probe+0x52a/0x861 [rt5190a_regulator] unreferenced object 0xffff88810b617b80 (size 32): comm "490-i2c-rt5190a", pid 253, jiffies 4294859904 (age 5060.983s) hex dump (first 32 bytes): 72 65 67 75 6c 61 74 6f 72 2e 32 38 36 38 2d 53 regulator.2868-S 55 50 50 4c 59 00 ff ff 29 00 00 00 2b 00 00 00 UPPLY...)...+... backtrace: [ ] __kmalloc_node_track_caller+0x44/0x1b0 [ ] kstrdup+0x3a/0x70 [ ] create_regulator+0xc0/0x4e0 [ ] regulator_resolve_supply+0x2d4/0x440 [ ] regulator_register+0x10b3/0x12a0 [ ] devm_regulator_register+0x57/0xb0 [ ] rt5190a_probe+0x52a/0x861 [rt5190a_regulator] After calling regulator_resolve_supply(), the 'rdev->supply' is set by set_supply(), after this set, in the error path, the resources need be released, so call regulator_put() to avoid the leaks.