Description (CNA)
In the Linux kernel, the following vulnerability has been resolved: scsi: lpfc: Fix SCSI I/O completion and abort handler deadlock During stress I/O tests with 500+ vports, hard LOCKUP call traces are observed. CPU A: native_queued_spin_lock_slowpath+0x192 _raw_spin_lock_irqsave+0x32 lpfc_handle_fcp_err+0x4c6 lpfc_fcp_io_cmd_wqe_cmpl+0x964 lpfc_sli4_fp_handle_cqe+0x266 __lpfc_sli4_process_cq+0x105 __lpfc_sli4_hba_process_cq+0x3c lpfc_cq_poll_hdler+0x16 irq_poll_softirq+0x76 __softirqentry_text_start+0xe4 irq_exit+0xf7 do_IRQ+0x7f CPU B: native_queued_spin_lock_slowpath+0x5b _raw_spin_lock+0x1c lpfc_abort_handler+0x13e scmd_eh_abort_handler+0x85 process_one_work+0x1a7 worker_thread+0x30 kthread+0x112 ret_from_fork+0x1f Diagram of lockup: CPUA CPUB ---- ---- lpfc_cmd->buf_lock phba->hbalock lpfc_cmd->buf_lock phba->hbalock Fix by reordering the taking of the lpfc_cmd->buf_lock and phba->hbalock in lpfc_abort_handler routine so that it tries to take the lpfc_cmd->buf_lock first before phba->hbalock.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected c2017260eea2db62e7bb1b7cbb1759f1d11ed067 before 7625e81de2164a082810e1f27547d388406da610; affected c2017260eea2db62e7bb1b7cbb1759f1d11ed067 before 21c0d469349957b5dc811c41200a2a998996ca8d; affected c2017260eea2db62e7bb1b7cbb1759f1d11ed067 before 0c4eed901285b9cae36a622f32bea3e92490da6c; affected c2017260eea2db62e7bb1b7cbb1759f1d11ed067 before 03cbbd7c2f5ee288f648f4aeedc765a181188553 |
| Linux / Linux | affected 5.1; unaffected 0 before 5.1; unaffected 5.15.46 through 5.15.*; unaffected 5.17.14 through 5.17.*; unaffected 5.18.3 through 5.18.*; unaffected 5.19 through * |
CWE
No CWE identifiers supplied.
References
- https://git.kernel.org/stable/c/7625e81de2164a082810e1f27547d388406da610
- https://git.kernel.org/stable/c/21c0d469349957b5dc811c41200a2a998996ca8d
- https://git.kernel.org/stable/c/0c4eed901285b9cae36a622f32bea3e92490da6c
- https://git.kernel.org/stable/c/03cbbd7c2f5ee288f648f4aeedc765a181188553
ADP enrichment
No English description supplied.
No references supplied.