Revision tags: v6.6.67, v6.6.66, v6.6.65, v6.6.64, v6.6.63, v6.6.62, v6.6.61, v6.6.60, v6.6.59, v6.6.58, v6.6.57, v6.6.56, v6.6.55 |
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34d6f206 |
| 07-Oct-2024 |
Andrew Jeffery <andrew@codeconstruct.com.au> |
Merge tag 'v6.6.54' into for/openbmc/dev-6.6
This is the 6.6.54 stable release
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Revision tags: v6.6.54, v6.6.53, v6.6.52, v6.6.51, v6.6.50, v6.6.49, v6.6.48 |
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cd6dd564 |
| 27-Aug-2024 |
Jason Gunthorpe <jgg@nvidia.com> |
iommufd: Protect against overflow of ALIGN() during iova allocation
commit 8f6887349b2f829a4121c518aeb064fc922714e4 upstream.
Userspace can supply an iova and uptr such that the target iova alignme
iommufd: Protect against overflow of ALIGN() during iova allocation
commit 8f6887349b2f829a4121c518aeb064fc922714e4 upstream.
Userspace can supply an iova and uptr such that the target iova alignment becomes really big and ALIGN() overflows which corrupts the selected area range during allocation. CONFIG_IOMMUFD_TEST can detect this:
WARNING: CPU: 1 PID: 5092 at drivers/iommu/iommufd/io_pagetable.c:268 iopt_alloc_area_pages drivers/iommu/iommufd/io_pagetable.c:268 [inline] WARNING: CPU: 1 PID: 5092 at drivers/iommu/iommufd/io_pagetable.c:268 iopt_map_pages+0xf95/0x1050 drivers/iommu/iommufd/io_pagetable.c:352 Modules linked in: CPU: 1 PID: 5092 Comm: syz-executor294 Not tainted 6.10.0-rc5-syzkaller-00294-g3ffea9a7a6f7 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/07/2024 RIP: 0010:iopt_alloc_area_pages drivers/iommu/iommufd/io_pagetable.c:268 [inline] RIP: 0010:iopt_map_pages+0xf95/0x1050 drivers/iommu/iommufd/io_pagetable.c:352 Code: fc e9 a4 f3 ff ff e8 1a 8b 4c fc 41 be e4 ff ff ff e9 8a f3 ff ff e8 0a 8b 4c fc 90 0f 0b 90 e9 37 f5 ff ff e8 fc 8a 4c fc 90 <0f> 0b 90 e9 68 f3 ff ff 48 c7 c1 ec 82 ad 8f 80 e1 07 80 c1 03 38 RSP: 0018:ffffc90003ebf9e0 EFLAGS: 00010293 RAX: ffffffff85499fa4 RBX: 00000000ffffffef RCX: ffff888079b49e00 RDX: 0000000000000000 RSI: 00000000ffffffef RDI: 0000000000000000 RBP: ffffc90003ebfc50 R08: ffffffff85499b30 R09: ffffffff85499942 R10: 0000000000000002 R11: ffff888079b49e00 R12: ffff8880228e0010 R13: 0000000000000000 R14: 1ffff920007d7f68 R15: ffffc90003ebfd00 FS: 000055557d760380(0000) GS:ffff8880b9500000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00000000005fdeb8 CR3: 000000007404a000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: <TASK> iommufd_ioas_copy+0x610/0x7b0 drivers/iommu/iommufd/ioas.c:274 iommufd_fops_ioctl+0x4d9/0x5a0 drivers/iommu/iommufd/main.c:421 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:907 [inline] __se_sys_ioctl+0xfc/0x170 fs/ioctl.c:893 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f
Cap the automatic alignment to the huge page size, which is probably a better idea overall. Huge automatic alignments can fragment and chew up the available IOVA space without any reason.
Link: https://patch.msgid.link/r/0-v1-8009738b9891+1f7-iommufd_align_overflow_jgg@nvidia.com Cc: stable@vger.kernel.org Fixes: 51fe6141f0f6 ("iommufd: Data structure to provide IOVA to PFN mapping") Reviewed-by: Nicolin Chen <nicolinc@nvidia.com> Reported-by: syzbot+16073ebbc4c64b819b47@syzkaller.appspotmail.com Closes: https://lore.kernel.org/r/000000000000388410061a74f014@google.com Signed-off-by: Jason Gunthorpe <jgg@nvidia.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Revision tags: v6.6.47, v6.6.46, v6.6.45, v6.6.44, v6.6.43, v6.6.42, v6.6.41, v6.6.40, v6.6.39, v6.6.38, v6.6.37, v6.6.36, v6.6.35, v6.6.34, v6.6.33, v6.6.32, v6.6.31, v6.6.30, v6.6.29, v6.6.28, v6.6.27, v6.6.26, v6.6.25, v6.6.24, v6.6.23 |
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816ffd28 |
| 13-Mar-2024 |
Andrew Jeffery <andrew@codeconstruct.com.au> |
Merge tag 'v6.6.21' into dev-6.6
This is the 6.6.21 stable release
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f1fb745e |
| 22-Feb-2024 |
Nicolin Chen <nicolinc@nvidia.com> |
iommufd: Fix iopt_access_list_id overwrite bug
commit aeb004c0cd6958e910123a1607634401009c9539 upstream.
Syzkaller reported the following WARN_ON: WARNING: CPU: 1 PID: 4738 at drivers/iommu/iommu
iommufd: Fix iopt_access_list_id overwrite bug
commit aeb004c0cd6958e910123a1607634401009c9539 upstream.
Syzkaller reported the following WARN_ON: WARNING: CPU: 1 PID: 4738 at drivers/iommu/iommufd/io_pagetable.c:1360
Call Trace: iommufd_access_change_ioas+0x2fe/0x4e0 iommufd_access_destroy_object+0x50/0xb0 iommufd_object_remove+0x2a3/0x490 iommufd_object_destroy_user iommufd_access_destroy+0x71/0xb0 iommufd_test_staccess_release+0x89/0xd0 __fput+0x272/0xb50 __fput_sync+0x4b/0x60 __do_sys_close __se_sys_close __x64_sys_close+0x8b/0x110 do_syscall_x64
The mismatch between the access pointer in the list and the passed-in pointer is resulting from an overwrite of access->iopt_access_list_id, in iopt_add_access(). Called from iommufd_access_change_ioas() when xa_alloc() succeeds but iopt_calculate_iova_alignment() fails.
Add a new_id in iopt_add_access() and only update iopt_access_list_id when returning successfully.
Cc: stable@vger.kernel.org Fixes: 9227da7816dd ("iommufd: Add iommufd_access_change_ioas(_id) helpers") Link: https://lore.kernel.org/r/2dda7acb25b8562ec5f1310de828ef5da9ef509c.1708636627.git.nicolinc@nvidia.com Reported-by: Jason Gunthorpe <jgg@nvidia.com> Suggested-by: Jason Gunthorpe <jgg@nvidia.com> Signed-off-by: Nicolin Chen <nicolinc@nvidia.com> Reviewed-by: Kevin Tian <kevin.tian@intel.com> Signed-off-by: Jason Gunthorpe <jgg@nvidia.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Revision tags: v6.6.16, v6.6.15, v6.6.14, v6.6.13, v6.6.12, v6.6.11, v6.6.10, v6.6.9, v6.6.8 |
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b97d6790 |
| 13-Dec-2023 |
Joel Stanley <joel@jms.id.au> |
Merge tag 'v6.6.6' into dev-6.6
This is the 6.6.6 stable release
Signed-off-by: Joel Stanley <joel@jms.id.au>
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Revision tags: v6.6.7, v6.6.6, v6.6.5, v6.6.4, v6.6.3, v6.6.2, v6.5.11, v6.6.1, v6.5.10, v6.6 |
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fcb32111 |
| 27-Oct-2023 |
Koichiro Den <den@valinux.co.jp> |
iommufd: Fix missing update of domains_itree after splitting iopt_area
commit e7250ab7ca4998fe026f2149805b03e09dc32498 upstream.
In iopt_area_split(), if the original iopt_area has filled a domain
iommufd: Fix missing update of domains_itree after splitting iopt_area
commit e7250ab7ca4998fe026f2149805b03e09dc32498 upstream.
In iopt_area_split(), if the original iopt_area has filled a domain and is linked to domains_itree, pages_nodes have to be properly reinserted. Otherwise the domains_itree becomes corrupted and we will UAF.
Fixes: 51fe6141f0f6 ("iommufd: Data structure to provide IOVA to PFN mapping") Link: https://lore.kernel.org/r/20231027162941.2864615-2-den@valinux.co.jp Cc: stable@vger.kernel.org Signed-off-by: Koichiro Den <den@valinux.co.jp> Signed-off-by: Jason Gunthorpe <jgg@nvidia.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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1baf6c5f |
| 30-Oct-2023 |
Jason Gunthorpe <jgg@nvidia.com> |
iommufd: Add iopt_area_alloc()
[ Upstream commit 361d744ddd61de065fbeb042aaed590d32dd92ec ]
We never initialize the two interval tree nodes, and zero fill is not the same as RB_CLEAR_NODE. This can
iommufd: Add iopt_area_alloc()
[ Upstream commit 361d744ddd61de065fbeb042aaed590d32dd92ec ]
We never initialize the two interval tree nodes, and zero fill is not the same as RB_CLEAR_NODE. This can hide issues where we missed adding the area to the trees. Factor out the allocation and clear the two nodes.
Fixes: 51fe6141f0f6 ("iommufd: Data structure to provide IOVA to PFN mapping") Link: https://lore.kernel.org/r/20231030145035.GG691768@ziepe.ca Signed-off-by: Jason Gunthorpe <jgg@nvidia.com> Signed-off-by: Sasha Levin <sashal@kernel.org>
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Revision tags: v6.5.9, v6.5.8, v6.5.7, v6.5.6, v6.5.5, v6.5.4, v6.5.3 |
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c900529f |
| 12-Sep-2023 |
Thomas Zimmermann <tzimmermann@suse.de> |
Merge drm/drm-fixes into drm-misc-fixes
Forwarding to v6.6-rc1.
Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
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Revision tags: v6.5.2, v6.1.51, v6.5.1 |
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4debf771 |
| 30-Aug-2023 |
Linus Torvalds <torvalds@linux-foundation.org> |
Merge tag 'for-linus-iommufd' of git://git.kernel.org/pub/scm/linux/kernel/git/jgg/iommufd
Pull iommufd updates from Jason Gunthorpe: "On top of the vfio updates is built some new iommufd functiona
Merge tag 'for-linus-iommufd' of git://git.kernel.org/pub/scm/linux/kernel/git/jgg/iommufd
Pull iommufd updates from Jason Gunthorpe: "On top of the vfio updates is built some new iommufd functionality:
- IOMMU_HWPT_ALLOC allows userspace to directly create the low level IO Page table objects and affiliate them with IOAS objects that hold the translation mapping. This is the basic functionality for the normal IOMMU_DOMAIN_PAGING domains.
- VFIO_DEVICE_ATTACH_IOMMUFD_PT can be used to replace the current translation. This is wired up to through all the layers down to the driver so the driver has the ability to implement a hitless replacement. This is necessary to fully support guest behaviors when emulating HW (eg guest atomic change of translation)
- IOMMU_GET_HW_INFO returns information about the IOMMU driver HW that owns a VFIO device. This includes support for the Intel iommu, and patches have been posted for all the other server IOMMU.
Along the way are a number of internal items:
- New iommufd kernel APIs: iommufd_ctx_has_group(), iommufd_device_to_ictx(), iommufd_device_to_id(), iommufd_access_detach(), iommufd_ctx_from_fd(), iommufd_device_replace()
- iommufd now internally tracks iommu_groups as it needs some per-group data
- Reorganize how the internal hwpt allocation flows to have more robust locking
- Improve the access interfaces to support detach and replace of an IOAS from an access
- New selftests and a rework of how the selftests creates a mock iommu driver to be more like a real iommu driver"
Link: https://lore.kernel.org/lkml/ZO%2FTe6LU1ENf58ZW@nvidia.com/
* tag 'for-linus-iommufd' of git://git.kernel.org/pub/scm/linux/kernel/git/jgg/iommufd: (34 commits) iommufd/selftest: Don't leak the platform device memory when unloading the module iommu/vt-d: Implement hw_info for iommu capability query iommufd/selftest: Add coverage for IOMMU_GET_HW_INFO ioctl iommufd: Add IOMMU_GET_HW_INFO iommu: Add new iommu op to get iommu hardware information iommu: Move dev_iommu_ops() to private header iommufd: Remove iommufd_ref_to_users() iommufd/selftest: Make the mock iommu driver into a real driver vfio: Support IO page table replacement iommufd/selftest: Add IOMMU_TEST_OP_ACCESS_REPLACE_IOAS coverage iommufd: Add iommufd_access_replace() API iommufd: Use iommufd_access_change_ioas in iommufd_access_destroy_object iommufd: Add iommufd_access_change_ioas(_id) helpers iommufd: Allow passing in iopt_access_list_id to iopt_remove_access() vfio: Do not allow !ops->dma_unmap in vfio_pin/unpin_pages() iommufd/selftest: Add a selftest for IOMMU_HWPT_ALLOC iommufd/selftest: Return the real idev id from selftest mock_domain iommufd: Add IOMMU_HWPT_ALLOC iommufd/selftest: Test iommufd_device_replace() iommufd: Make destroy_rwsem use a lock class per object type ...
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Revision tags: v6.1.50, v6.5, v6.1.49, v6.1.48, v6.1.46, v6.1.45, v6.1.44 |
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2612e3bb |
| 07-Aug-2023 |
Rodrigo Vivi <rodrigo.vivi@intel.com> |
Merge drm/drm-next into drm-intel-next
Catching-up with drm-next and drm-intel-gt-next. It will unblock a code refactor around the platform definitions (names vs acronyms).
Signed-off-by: Rodrigo V
Merge drm/drm-next into drm-intel-next
Catching-up with drm-next and drm-intel-gt-next. It will unblock a code refactor around the platform definitions (names vs acronyms).
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
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9f771739 |
| 07-Aug-2023 |
Joonas Lahtinen <joonas.lahtinen@linux.intel.com> |
Merge drm/drm-next into drm-intel-gt-next
Need to pull in b3e4aae612ec ("drm/i915/hdcp: Modify hdcp_gsc_message msg sending mechanism") as a dependency for https://patchwork.freedesktop.org/series/1
Merge drm/drm-next into drm-intel-gt-next
Need to pull in b3e4aae612ec ("drm/i915/hdcp: Modify hdcp_gsc_message msg sending mechanism") as a dependency for https://patchwork.freedesktop.org/series/121735/
Signed-off-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
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Revision tags: v6.1.43 |
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5d5c85ff |
| 28-Jul-2023 |
Nicolin Chen <nicolinc@nvidia.com> |
iommufd: Allow passing in iopt_access_list_id to iopt_remove_access()
This is a preparatory change for ioas replacement support for accesses. The replacement routine does an iopt_add_access() for a
iommufd: Allow passing in iopt_access_list_id to iopt_remove_access()
This is a preparatory change for ioas replacement support for accesses. The replacement routine does an iopt_add_access() for a new IOAS first and then iopt_remove_access() for the old IOAS upon the success of the first call. However, the first call overrides the iopt_access_list_id in the access struct, resulting in iopt_remove_access() being unable to work on the old IOAS.
Add an iopt_access_list_id as a parameter to iopt_remove_access, so the replacement routine can save the id before it gets overwritten. Pass the id in iopt_remove_access() for a proper cleanup.
The existing callers should just pass in access->iopt_access_list_id.
Link: https://lore.kernel.org/r/7bb939b9e0102da0c099572bb3de78ab7622221e.1690523699.git.nicolinc@nvidia.com Suggested-by: Jason Gunthorpe <jgg@nvidia.com> Reviewed-by: Jason Gunthorpe <jgg@nvidia.com> Reviewed-by: Kevin Tian <kevin.tian@intel.com> Signed-off-by: Nicolin Chen <nicolinc@nvidia.com> Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
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Revision tags: v6.1.42, v6.1.41, v6.1.40, v6.1.39 |
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6583c865 |
| 17-Jul-2023 |
Jason Gunthorpe <jgg@nvidia.com> |
iommufd/selftest: Add a selftest for IOMMU_HWPT_ALLOC
Test the basic flow.
Link: https://lore.kernel.org/r/19-v8-6659224517ea+532-iommufd_alloc_jgg@nvidia.com Reviewed-by: Kevin Tian <kevin.tian@in
iommufd/selftest: Add a selftest for IOMMU_HWPT_ALLOC
Test the basic flow.
Link: https://lore.kernel.org/r/19-v8-6659224517ea+532-iommufd_alloc_jgg@nvidia.com Reviewed-by: Kevin Tian <kevin.tian@intel.com> Tested-by: Nicolin Chen <nicolinc@nvidia.com> Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
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34f327a9 |
| 17-Jul-2023 |
Jason Gunthorpe <jgg@nvidia.com> |
iommufd: Keep track of each device's reserved regions instead of groups
The driver facing API in the iommu core makes the reserved regions per-device. An algorithm in the core code consolidates the
iommufd: Keep track of each device's reserved regions instead of groups
The driver facing API in the iommu core makes the reserved regions per-device. An algorithm in the core code consolidates the regions of all the devices in a group to return the group view.
To allow for devices to be hotplugged into the group iommufd would re-load the entire group's reserved regions for each device, just in case they changed.
Further iommufd already has to deal with duplicated/overlapping reserved regions as it must union all the groups together.
Thus simplify all of this to just use the device reserved regions interface directly from the iommu driver.
Link: https://lore.kernel.org/r/5-v8-6659224517ea+532-iommufd_alloc_jgg@nvidia.com Suggested-by: Kevin Tian <kevin.tian@intel.com> Reviewed-by: Lu Baolu <baolu.lu@linux.intel.com> Reviewed-by: Kevin Tian <kevin.tian@intel.com> Tested-by: Nicolin Chen <nicolinc@nvidia.com> Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
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61b73694 |
| 24-Jul-2023 |
Thomas Zimmermann <tzimmermann@suse.de> |
Merge drm/drm-next into drm-misc-next
Backmerging to get v6.5-rc2.
Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
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0791faeb |
| 17-Jul-2023 |
Mark Brown <broonie@kernel.org> |
ASoC: Merge v6.5-rc2
Get a similar baseline to my other branches, and fixes for people using the branch.
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2f98e686 |
| 11-Jul-2023 |
Maxime Ripard <mripard@kernel.org> |
Merge v6.5-rc1 into drm-misc-fixes
Boris needs 6.5-rc1 in drm-misc-fixes to prevent a conflict.
Signed-off-by: Maxime Ripard <mripard@kernel.org>
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Revision tags: v6.1.38, v6.1.37 |
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44f10dbe |
| 30-Jun-2023 |
Andrew Morton <akpm@linux-foundation.org> |
Merge branch 'master' into mm-hotfixes-stable
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31929ae0 |
| 29-Jun-2023 |
Linus Torvalds <torvalds@linux-foundation.org> |
Merge tag 'for-linus-iommufd' of git://git.kernel.org/pub/scm/linux/kernel/git/jgg/iommufd
Pull iommufd updates from Jason Gunthorpe: "Just two syzkaller fixes, both for the same basic issue: using
Merge tag 'for-linus-iommufd' of git://git.kernel.org/pub/scm/linux/kernel/git/jgg/iommufd
Pull iommufd updates from Jason Gunthorpe: "Just two syzkaller fixes, both for the same basic issue: using the area pointer during an access forced unmap while the locks protecting it were let go"
* tag 'for-linus-iommufd' of git://git.kernel.org/pub/scm/linux/kernel/git/jgg/iommufd: iommufd: Call iopt_area_contig_done() under the lock iommufd: Do not access the area pointer after unlocking
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Revision tags: v6.1.36, v6.4, v6.1.35 |
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804ca14d |
| 20-Jun-2023 |
Jason Gunthorpe <jgg@nvidia.com> |
iommufd: Do not access the area pointer after unlocking
A concurrent unmap can trigger freeing of the area pointers while we are generating an unmapping notification for accesses.
syzkaller reports
iommufd: Do not access the area pointer after unlocking
A concurrent unmap can trigger freeing of the area pointers while we are generating an unmapping notification for accesses.
syzkaller reports:
BUG: KASAN: slab-use-after-free in iopt_unmap_iova_range+0x5ba/0x5f0 Read of size 4 at addr ffff888075996184 by task syz-executor.2/31160
CPU: 1 PID: 31160 Comm: syz-executor.2 Not tainted 6.4.0-rc5-syzkaller-00313-g4c605260bc60 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/25/2023 Call Trace: <TASK> dump_stack_lvl+0xd9/0x150 print_address_description.constprop.0+0x2c/0x3c0 kasan_report+0x11c/0x130 iopt_unmap_iova_range+0x5ba/0x5f0 iopt_unmap_all+0x27/0x50 iommufd_ioas_unmap+0x3d0/0x490 iommufd_fops_ioctl+0x317/0x4b0 __x64_sys_ioctl+0x197/0x210 do_syscall_64+0x39/0xb0 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7f0812c8c169 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 f1 19 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f0813914168 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007f0812dabf80 RCX: 00007f0812c8c169 RDX: 0000000020000100 RSI: 0000000000003b86 RDI: 0000000000000005 RBP: 00007f0812ce7ca1 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f0812ecfb1f R14: 00007f0813914300 R15: 0000000000022000 </TASK>
Allocated by task 31160: kasan_save_stack+0x22/0x40 kasan_set_track+0x25/0x30 __kasan_kmalloc+0xa2/0xb0 iopt_alloc_area_pages+0x94/0x560 iopt_map_user_pages+0x205/0x4e0 iommufd_ioas_map+0x329/0x5f0 iommufd_fops_ioctl+0x317/0x4b0 __x64_sys_ioctl+0x197/0x210 do_syscall_64+0x39/0xb0 entry_SYSCALL_64_after_hwframe+0x63/0xcd
Freed by task 31161: kasan_save_stack+0x22/0x40 kasan_set_track+0x25/0x30 kasan_save_free_info+0x2e/0x40 ____kasan_slab_free+0x160/0x1c0 slab_free_freelist_hook+0x8b/0x1c0 __kmem_cache_free+0xaf/0x2d0 iopt_unmap_iova_range+0x288/0x5f0 iopt_unmap_all+0x27/0x50 iommufd_ioas_unmap+0x3d0/0x490 iommufd_fops_ioctl+0x317/0x4b0 __x64_sys_ioctl+0x197/0x210 do_syscall_64+0x39/0xb0 entry_SYSCALL_64_after_hwframe+0x63/0xcd
The buggy address belongs to the object at ffff888075996100 which belongs to the cache kmalloc-cg-192 of size 192 The buggy address is located 132 bytes inside of freed 192-byte region [ffff888075996100, ffff8880759961c0)
The buggy address belongs to the physical page: page:ffffea0001d66580 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x75996 memcg:ffff88801f1c2701 flags: 0xfff00000000200(slab|node=0|zone=1|lastcpupid=0x7ff) page_type: 0xffffffff() raw: 00fff00000000200 ffff88801244ddc0 dead000000000122 0000000000000000 raw: 0000000000000000 0000000080100010 00000001ffffffff ffff88801f1c2701 page dumped because: kasan: bad access detected page_owner tracks the page as allocated page last allocated via order 0, migratetype Unmovable, gfp_mask 0x112cc0(GFP_USER|__GFP_NOWARN|__GFP_NORETRY), pid 31157, tgid 31154 (syz-executor.0), ts 1984547323469, free_ts 1983933451331 post_alloc_hook+0x2db/0x350 get_page_from_freelist+0xf41/0x2c00 __alloc_pages+0x1cb/0x4a0 alloc_pages+0x1aa/0x270 allocate_slab+0x25f/0x390 ___slab_alloc+0xa91/0x1400 __slab_alloc.constprop.0+0x56/0xa0 __kmem_cache_alloc_node+0x136/0x320 kmalloc_trace+0x26/0xe0 iommufd_test+0x1328/0x2c20 iommufd_fops_ioctl+0x317/0x4b0 __x64_sys_ioctl+0x197/0x210 do_syscall_64+0x39/0xb0 entry_SYSCALL_64_after_hwframe+0x63/0xcd page last free stack trace: free_unref_page_prepare+0x62e/0xcb0 free_unref_page_list+0xe3/0xa70 release_pages+0xcd8/0x1380 tlb_batch_pages_flush+0xa8/0x1a0 tlb_finish_mmu+0x14b/0x7e0 exit_mmap+0x2b2/0x930 __mmput+0x128/0x4c0 mmput+0x60/0x70 do_exit+0x9b0/0x29b0 do_group_exit+0xd4/0x2a0 get_signal+0x2318/0x25b0 arch_do_signal_or_restart+0x79/0x5c0 exit_to_user_mode_prepare+0x11f/0x240 syscall_exit_to_user_mode+0x1d/0x50 do_syscall_64+0x46/0xb0 entry_SYSCALL_64_after_hwframe+0x63/0xcd
Precompute what is needed to call the access function and do not check the area's num_accesses again as the pointer may not be valid anymore. Use a counter instead.
Fixes: 51fe6141f0f6 ("iommufd: Data structure to provide IOVA to PFN mapping") Link: https://lore.kernel.org/r/1-v2-9a03761d445d+54-iommufd_syz2_jgg@nvidia.com Reviewed-by: Kevin Tian <kevin.tian@intel.com> Reported-by: syzbot+1ad12d16afca0e7d2dde@syzkaller.appspotmail.com Closes: https://lore.kernel.org/r/0000000000001d40fc05fe385332@google.com Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
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Revision tags: v6.1.34, v6.1.33, v6.1.32, v6.1.31, v6.1.30, v6.1.29, v6.1.28, v6.1.27, v6.1.26, v6.3, v6.1.25, v6.1.24, v6.1.23, v6.1.22, v6.1.21, v6.1.20, v6.1.19, v6.1.18, v6.1.17, v6.1.16, v6.1.15, v6.1.14, v6.1.13 |
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7ae9fb1b |
| 21-Feb-2023 |
Dmitry Torokhov <dmitry.torokhov@gmail.com> |
Merge branch 'next' into for-linus
Prepare input updates for 6.3 merge window.
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Revision tags: v6.2, v6.1.12, v6.1.11, v6.1.10, v6.1.9, v6.1.8 |
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6f849817 |
| 19-Jan-2023 |
Thomas Zimmermann <tzimmermann@suse.de> |
Merge drm/drm-next into drm-misc-next
Backmerging into drm-misc-next to get DRM accelerator infrastructure, which is required by ipuv driver.
Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
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Revision tags: v6.1.7 |
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d0e99511 |
| 17-Jan-2023 |
Kalle Valo <kvalo@kernel.org> |
Merge wireless into wireless-next
Due to the two cherry picked commits from wireless to wireless-next we have several conflicts in mt76. To avoid any bugs with conflicts merge wireless into wireless
Merge wireless into wireless-next
Due to the two cherry picked commits from wireless to wireless-next we have several conflicts in mt76. To avoid any bugs with conflicts merge wireless into wireless-next.
96f134dc1964 wifi: mt76: handle possible mt76_rx_token_consume failures fe13dad8992b wifi: mt76: dma: do not increment queue head if mt76_dma_add_buf fails
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Revision tags: v6.1.6, v6.1.5, v6.0.19 |
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407da561 |
| 09-Jan-2023 |
Dmitry Torokhov <dmitry.torokhov@gmail.com> |
Merge tag 'v6.2-rc3' into next
Merge with mainline to bring in timer_shutdown_sync() API.
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Revision tags: v6.0.18, v6.1.4, v6.1.3, v6.0.17 |
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2c55d703 |
| 03-Jan-2023 |
Maxime Ripard <maxime@cerno.tech> |
Merge drm/drm-fixes into drm-misc-fixes
Let's start the fixes cycle.
Signed-off-by: Maxime Ripard <maxime@cerno.tech>
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