[PATCH 5.15 27/39] scsi: qla2xxx: Fix bsg_done() causing double free

Greg Kroah-Hartman
2026-02-17T20:44:15Z

From: Anil Gurumurthy <agurumurthy@marvell.com>

[ Upstream commit c2c68225b1456f4d0d393b5a8778d51bb0d5b1d0 ]

Kernel panic observed on system,

[5353358.825191] BUG: unable to handle page fault for address: ff5f5e897b024000
[5353358.825194] #PF: supervisor write access in kernel mode
[5353358.825195] #PF: error_code(0x0002) - not-present page
[5353358.825196] PGD 100006067 P4D 0
[5353358.825198] Oops: 0002 [#1] PREEMPT SMP NOPTI
[5353358.825200] CPU: 5 PID: 2132085 Comm: qlafwupdate.sub Kdump: loaded Tainted: G W L ------- --- 5.14.0-503.34.1.el9_5.x86_64 #1
[5353358.825203] Hardware name: HPE ProLiant DL360 Gen11/ProLiant DL360 Gen11, BIOS 2.44 01/17/2025
[5353358.825204] RIP: 0010:memcpy_erms+0x6/0x10
[5353358.825211] RSP: 0018:ff591da8f4f6b710 EFLAGS: 00010246
[5353358.825212] RAX: ff5f5e897b024000 RBX: 0000000000007090 RCX: 0000000000001000
[5353358.825213] RDX: 0000000000001000 RSI: ff591da8f4fed090 RDI: ff5f5e897b024000
[5353358.825214] RBP: 0000000000010000 R08: ff5f5e897b024000 R09: 0000000000000000
[5353358.825215] R10: ff46cf8c40517000 R11: 0000000000000001 R12: 0000000000008090
[5353358.825216] R13: ff591da8f4f6b720 R14: 0000000000001000 R15: 0000000000000000
[5353358.825218] FS: 00007f1e88d47740(0000) GS:ff46cf935f940000(0000) knlGS:0000000000000000
[5353358.825219] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[5353358.825220] CR2: ff5f5e897b024000 CR3: 0000000231532004 CR4: 0000000000771ef0
[5353358.825221] PKRU: 55555554
[5353358.825222] Call Trace:
[5353358.825223] <TASK>
[5353358.825224] ? show_trace_log_lvl+0x1c4/0x2df
[5353358.825229] ? show_trace_log_lvl+0x1c4/0x2df
[5353358.825232] ? sg_copy_buffer+0xc8/0x110
[5353358.825236] ? __die_body.cold+0x8/0xd
[5353358.825238] ? page_fault_oops+0x134/0x170
[5353358.825242] ? kernelmode_fixup_or_oops+0x84/0x110
[5353358.825244] ? exc_page_fault+0xa8/0x150
[5353358.825247] ? asm_exc_page_fault+0x22/0x30
[5353358.825252] ? memcpy_erms+0x6/0x10
[5353358.825253] sg_copy_buffer+0xc8/0x110
[5353358.825259] qla2x00_process_vendor_specific+0x652/0x1320 [qla2xxx]
[5353358.825317] qla24xx_bsg_request+0x1b2/0x2d0 [qla2xxx]

Most routines in qla_bsg.c call bsg_done() only for success cases.
However a few invoke it for failure case as well leading to a double
free. Validate before calling bsg_done().

Cc: stable@vger.kernel.org
Signed-off-by: Anil Gurumurthy <agurumurthy@marvell.com>
Signed-off-by: Nilesh Javali <njavali@marvell.com>
Reviewed-by: Himanshu Madhani <hmadhani2024@gmail.com>
Link: https://patch.msgid.link/20251210101604.431868-12-njavali@marvell.com
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/scsi/qla2xxx/qla_bsg.c | 25 +++++++++++++++----------
1 file changed, 15 insertions(+), 10 deletions(-)

--- a/drivers/scsi/qla2xxx/qla_bsg.c
+++ b/drivers/scsi/qla2xxx/qla_bsg.c
@@ -1546,8 +1546,9 @@ qla2x00_update_optrom(struct bsg_job *bs
ha->optrom_buffer = NULL;
ha->optrom_state = QLA_SWAITING;
mutex_unlock(&ha->optrom_mutex);
- bsg_job_done(bsg_job, bsg_reply->result,
- bsg_reply->reply_payload_rcv_len);
+ if (!rval)
+ bsg_job_done(bsg_job, bsg_reply->result,
+ bsg_reply->reply_payload_rcv_len);
return rval;
}

@@ -2525,8 +2526,9 @@ qla2x00_manage_host_stats(struct bsg_job
sizeof(struct ql_vnd_mng_host_stats_resp));

bsg_reply->result = DID_OK;
- bsg_job_done(bsg_job, bsg_reply->result,
- bsg_reply->reply_payload_rcv_len);
+ if (!ret)
+ bsg_job_done(bsg_job, bsg_reply->result,
+ bsg_reply->reply_payload_rcv_len);

return ret;
}
@@ -2615,8 +2617,9 @@ qla2x00_get_host_stats(struct bsg_job *b
bsg_job->reply_payload.sg_cnt,
data, response_len);
bsg_reply->result = DID_OK;
- bsg_job_done(bsg_job, bsg_reply->result,
- bsg_reply->reply_payload_rcv_len);
+ if (!ret)
+ bsg_job_done(bsg_job, bsg_reply->result,
+ bsg_reply->reply_payload_rcv_len);

kfree(data);
host_stat_out:
@@ -2715,8 +2718,9 @@ reply:
bsg_job->reply_payload.sg_cnt, data,
response_len);
bsg_reply->result = DID_OK;
- bsg_job_done(bsg_job, bsg_reply->result,
- bsg_reply->reply_payload_rcv_len);
+ if (!ret)
+ bsg_job_done(bsg_job, bsg_reply->result,
+ bsg_reply->reply_payload_rcv_len);

tgt_stat_out:
kfree(data);
@@ -2777,8 +2781,9 @@ qla2x00_manage_host_port(struct bsg_job
bsg_job->reply_payload.sg_cnt, &rsp_data,
sizeof(struct ql_vnd_mng_host_port_resp));
bsg_reply->result = DID_OK;
- bsg_job_done(bsg_job, bsg_reply->result,
- bsg_reply->reply_payload_rcv_len);
+ if (!ret)
+ bsg_job_done(bsg_job, bsg_reply->result,
+ bsg_reply->reply_payload_rcv_len);

return ret;
}