{"id":2231658,"url":"http://patchwork.ozlabs.org/api/covers/2231658/?format=json","web_url":"http://patchwork.ozlabs.org/project/linuxppc-dev/cover/cover.1777606826.git.ritesh.list@gmail.com/","project":{"id":2,"url":"http://patchwork.ozlabs.org/api/projects/2/?format=json","name":"Linux PPC development","link_name":"linuxppc-dev","list_id":"linuxppc-dev.lists.ozlabs.org","list_email":"linuxppc-dev@lists.ozlabs.org","web_url":"https://github.com/linuxppc/wiki/wiki","scm_url":"https://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux.git","webscm_url":"https://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux.git/","list_archive_url":"https://lore.kernel.org/linuxppc-dev/","list_archive_url_format":"https://lore.kernel.org/linuxppc-dev/{}/","commit_url_format":"https://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux.git/commit/?id={}"},"msgid":"","list_archive_url":"https://lore.kernel.org/linuxppc-dev/cover.1777606826.git.ritesh.list@gmail.com/","date":"2026-05-01T04:11:39","name":"[v3,0/9] pseries/papr-hvpipe: Fix deadlock, races and misc cleanups","submitter":{"id":79126,"url":"http://patchwork.ozlabs.org/api/people/79126/?format=json","name":"Ritesh Harjani (IBM)","email":"ritesh.list@gmail.com"},"mbox":"http://patchwork.ozlabs.org/project/linuxppc-dev/cover/cover.1777606826.git.ritesh.list@gmail.com/mbox/","series":[{"id":502420,"url":"http://patchwork.ozlabs.org/api/series/502420/?format=json","web_url":"http://patchwork.ozlabs.org/project/linuxppc-dev/list/?series=502420","date":"2026-05-01T04:11:39","name":"pseries/papr-hvpipe: Fix deadlock, races and misc cleanups","version":3,"mbox":"http://patchwork.ozlabs.org/series/502420/mbox/"}],"comments":"http://patchwork.ozlabs.org/api/covers/2231658/comments/","headers":{"Return-Path":"\n ","X-Original-To":["incoming@patchwork.ozlabs.org","linuxppc-dev@lists.ozlabs.org"],"Delivered-To":"patchwork-incoming@legolas.ozlabs.org","Authentication-Results":["legolas.ozlabs.org;\n\tdkim=pass (2048-bit key;\n unprotected) header.d=gmail.com header.i=@gmail.com header.a=rsa-sha256\n header.s=20251104 header.b=slQ041kH;\n\tdkim-atps=neutral","legolas.ozlabs.org;\n spf=pass (sender SPF authorized) smtp.mailfrom=lists.ozlabs.org\n (client-ip=2404:9400:21b9:f100::1; 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The tests\nare not straight forward and we are waiting for the results.\nWill update on the test results once we hear back from the internal test team.\n\nv2->v3:\n======\n1. Rearranged the patches in such a way that it is easier to backport the fixes\n if required.\n2. Clubbed patch-8 and patch-10 (of v2) since they both were changing the same function.\n3. Handled ret>=0 case in copy_to_user patch, when the user itself may request\n for 0 effective bytes (after the HDR_LEN).\n\n[v2]: https://lore.kernel.org/linuxppc-dev/cover.1775648406.git.ritesh.list@gmail.com/\n\nv1->v2:\n========\n1. Fix a possible deadlock due to use of spin_lock instead of spin_lock_irqsave.\n2. Prevent kernel stack uninit memory leak to userspace\n3. Fix the race condition in null-ptr-deref case where there may be an\n msg pending to be consumed from the hvpipe.\n4. Fixed error handling in init routine in patch-10\n\n[v1]: https://lore.kernel.org/linuxppc-dev/cover.1775569027.git.ritesh.list@gmail.com/#t\n\nRitesh Harjani (IBM) (9):\n pseries/papr-hvpipe: Fix race with interrupt handler\n pseries/papr-hvpipe: Prevent kernel stack memory leak to userspace\n pseries/papr-hvpipe: Fix null ptr deref in papr_hvpipe_dev_create_handle()\n pseries/papr-hvpipe: Fix & simplify error handling in papr_hvpipe_init()\n pseries/papr-hvpipe: Fix the usage of copy_to_user()\n pseries/papr-hvpipe: Simplify spin unlock usage in papr_hvpipe_handle_release()\n pseries/papr-hvpipe: Kill task_struct pointer from struct hvpipe_source_info\n pseries/papr-hvpipe: Refactor and simplify hvpipe_rtas_recv_msg()\n pseries/papr-hvpipe: Fix style and checkpatch issues in enable_hvpipe_IRQ()\n\n arch/powerpc/platforms/pseries/papr-hvpipe.c | 181 ++++++++++---------\n arch/powerpc/platforms/pseries/papr-hvpipe.h | 1 -\n 2 files changed, 97 insertions(+), 85 deletions(-)\n\n--\n2.39.5"}