Minki/linux
1
0
Fork 1
mirror of https://github.com/torvalds/linux.git synced 2024-10-25 06:31:06 +00:00
Code Issues Packages Projects Releases Wiki Activity

Fix some IPMI crashes

Browse Source 
Some crash fixes have come in dealing with various error handling
 issues.  They have sat in next for 5 days or more without issue, and
 they are fairly critical.
 
 -corey
 -----BEGIN PGP SIGNATURE-----
 
 iQIzBAABCgAdFiEE/Q1c5nzg9ZpmiCaGYfOMkJGb/4EFAmHDMeUACgkQYfOMkJGb
 /4GZcw//dwGQ4Ky4QaDxjE513EskfwM+Tdd688nBzN72xBY9KXnxsnbTVJmPJbUd
 QYgzCxBdQ9PW/1vei5DAtbOTvLbknQ9IY3UYvgOVmdmC5xHkGlws835yqnwv8rf7
 CxBMOKIEsRr4rl3V4gDqchGeJr1gGMXRgJrPCSrDLh7Ontl07jEE89aOz3SoGT4/
 5pzAOPUtLzkwrFjSbqs9LK8+YT0DvQ4DwZo3dbqoECId7k1t8v4KuG5sTc8mDg14
 FsHhSRPVqLaSRnhkg7tQTocKpMsnPDmvnW7GMejrCS8mfe1yp5dUPZDAk4d/eY2B
 ++zxvWV4jokmgxAEMkFXZ86VLxxRhL5nYKF0g8j7RBAIJYDPci9zTw+e9su73OSs
 moWarqDABqfBz5yMFUAJgjwHXJwlsWITLAFOJki8Jjf5asD/Q+zmOqW+T7Yczlca
 NmjH3w/WsXuJZSaMqOWXAzU7pMLtI68I2gWHuAfxjnRIXZ78ywrqLdZoDzWJ7ZFJ
 AbWqlfQ9AobtcOJ34W02Ktl0FH2y/IPAJVQNa2/CPPiZqKGJDpCVXkTneP91zage
 p0iWXLNhDMJlfEdIDPGTHxVdX1zerxhEJPlyWOHCU8V7S3879I5RaRS3aqqejjp9
 d7VpyQa4dwYogYatE0lYLoRutMDwKftOL2P2RTBbL64sTzXd+Qk=
 =6lgC
 -----END PGP SIGNATURE-----

Merge tag 'for-linus-5.16-3' of git://github.com/cminyard/linux-ipmi

Pull IPMI fixes from Corey Minyard:
 "Fix some IPMI crashes

  Some crash fixes have come in dealing with various error handling
  issues. They have sat in next for 5 days or more without issue, and
  they are fairly critical"

* tag 'for-linus-5.16-3' of git://github.com/cminyard/linux-ipmi:
  ipmi: Fix UAF when uninstall ipmi_si and ipmi_msghandler module
  ipmi: fix initialization when workqueue allocation fails
  ipmi: bail out if init_srcu_struct fails
  ipmi: ssif: initialize ssif_info->client early
This commit is contained in:
Linus Torvalds 2021-12-22 10:11:17 -08:00
commit 0740040580
2 changed files with 18 additions and 12 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

23
drivers/char/ipmi/ipmi_msghandler.c
View File

@ -3031,7 +3031,7 @@ cleanup_bmc_device(struct kref *ref)
* with removing the device attributes while reading a device
* attribute.
*/
schedule_work(&bmc->remove_work);
queue_work(remove_work_wq, &bmc->remove_work);
}
/*
@ -5392,22 +5392,27 @@ static int ipmi_init_msghandler(void)
if (initialized)
goto out;
init_srcu_struct(&ipmi_interfaces_srcu);
rv = init_srcu_struct(&ipmi_interfaces_srcu);
if (rv)
goto out;
remove_work_wq = create_singlethread_workqueue("ipmi-msghandler-remove-wq");
if (!remove_work_wq) {
pr_err("unable to create ipmi-msghandler-remove-wq workqueue");
rv = -ENOMEM;
goto out_wq;
}
timer_setup(&ipmi_timer, ipmi_timeout, 0);
mod_timer(&ipmi_timer, jiffies + IPMI_TIMEOUT_JIFFIES);
atomic_notifier_chain_register(&panic_notifier_list, &panic_block);
remove_work_wq = create_singlethread_workqueue("ipmi-msghandler-remove-wq");
if (!remove_work_wq) {
pr_err("unable to create ipmi-msghandler-remove-wq workqueue");
rv = -ENOMEM;
goto out;
}
initialized = true;
out_wq:
if (rv)
cleanup_srcu_struct(&ipmi_interfaces_srcu);
out:
mutex_unlock(&ipmi_interfaces_mutex);
return rv;

7
drivers/char/ipmi/ipmi_ssif.c
View File

@ -1659,6 +1659,9 @@ static int ssif_probe(struct i2c_client *client, const struct i2c_device_id *id)
}
}
ssif_info->client = client;
i2c_set_clientdata(client, ssif_info);
rv = ssif_check_and_remove(client, ssif_info);
/* If rv is 0 and addr source is not SI_ACPI, continue probing */
if (!rv && ssif_info->addr_source == SI_ACPI) {
@ -1679,9 +1682,6 @@ static int ssif_probe(struct i2c_client *client, const struct i2c_device_id *id)
ipmi_addr_src_to_str(ssif_info->addr_source),
client->addr, client->adapter->name, slave_addr);
ssif_info->client = client;
i2c_set_clientdata(client, ssif_info);
/* Now check for system interface capabilities */
msg[0] = IPMI_NETFN_APP_REQUEST << 2;
msg[1] = IPMI_GET_SYSTEM_INTERFACE_CAPABILITIES_CMD;
@ -1881,6 +1881,7 @@ static int ssif_probe(struct i2c_client *client, const struct i2c_device_id *id)
dev_err(&ssif_info->client->dev,
"Unable to start IPMI SSIF: %d\n", rv);
i2c_set_clientdata(client, NULL);
kfree(ssif_info);
}
kfree(resp);