git: 2edc70060d1e - stable/13 - Fix mpr(4) panic during a firmware update.
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Date: Thu, 20 Oct 2022 15:02:37 UTC
The branch stable/13 has been updated by ken: URL: https://cgit.FreeBSD.org/src/commit/?id=2edc70060d1e0f75eb975b4318345343600852d8 commit 2edc70060d1e0f75eb975b4318345343600852d8 Author: Kenneth D. Merry <ken@FreeBSD.org> AuthorDate: 2022-10-17 16:48:34 +0000 Commit: Kenneth D. Merry <ken@FreeBSD.org> CommitDate: 2022-10-20 15:01:03 +0000 Fix mpr(4) panic during a firmware update. Issue Description: The RequestCredits field of IOCFacts got changed between the Phase23 firmware to Phase24 firmware. So as part of firmware update operation, driver has to free the resources & pools which are created with the Phase23 Firmware's IOCFacts data (i.e. during driver load time) and has to reallocate the resources and pools using Phase24's IOCFacts data. Here driver has freed the interrupts but missed to reallocate the interrupts and hence config page read operation is getting timed out and controller is going for recursive reinit (controller reset) operations and leading to kernel panic. Fix: Reallocate the interrupts if the interrupts are disabled as part of firmware update/downgrade operation. Submitted by: Sreekanth Ready <sreekanth.reddy@broadcom.com> Tested by: ken MFC after: 3 days (cherry picked from commit 11778fca4a83f5e3b597c75785aa5c0ee0dc518e) --- sys/dev/mpr/mpr.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/sys/dev/mpr/mpr.c b/sys/dev/mpr/mpr.c index 0f4c5c906216..6f54b1f57950 100644 --- a/sys/dev/mpr/mpr.c +++ b/sys/dev/mpr/mpr.c @@ -740,7 +740,7 @@ mpr_iocfacts_allocate(struct mpr_softc *sc, uint8_t attaching) * XXX If the number of MSI-X vectors changes during re-init, this * won't see it and adjust. */ - if (attaching && (error = mpr_pci_setup_interrupts(sc)) != 0) { + if ((attaching || reallocating) && (error = mpr_pci_setup_interrupts(sc)) != 0) { mpr_dprint(sc, MPR_INIT|MPR_ERROR, "Failed to setup interrupts\n"); mpr_free(sc);