Linux kernel
============
There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.
In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``. The formatted documentation can also be read online at:
https://www.kernel.org/doc/html/latest/
There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.
Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.
Aharon Landau
authored
The value mr->sig is stored in the entry upon mr allocation, however, ibmr is wrongly entered here as "old", therefore, xa_cmpxchg() does not replace the entry with NULL, which leads to the following trace: WARNING: CPU: 28 PID: 2078 at drivers/infiniband/hw/mlx5/main.c:3643 mlx5_ib_stage_init_cleanup+0x4d/0x60 [mlx5_ib] Modules linked in: nvme_rdma nvme_fabrics nvme_core 8021q garp mrp bonding bridge stp llc rfkill rpcrdma sunrpc rdma_ucm ib_srpt ib_isert iscsi_tad CPU: 28 PID: 2078 Comm: reboot Tainted: G X --------- --- 5.13.0-0.rc2.19.el9.x86_64 #1 Hardware name: Dell Inc. PowerEdge R430/03XKDV, BIOS 2.9.1 12/07/2018 RIP: 0010:mlx5_ib_stage_init_cleanup+0x4d/0x60 [mlx5_ib] Code: 8d bb 70 1f 00 00 be 00 01 00 00 e8 9d 94 ce da 48 3d 00 01 00 00 75 02 5b c3 0f 0b 5b c3 0f 0b 48 83 bb b0 20 00 00 00 74 d5 <0f> 0b eb d1 4 RSP: 0018:ffffa8db06d33c90 EFLAGS: 00010282 RAX: 0000000000000000 RBX: ffff97f890a44000 RCX: ffff97f900ec0160 RDX: 0000000000000000 RSI: 0000000080080001 RDI: ffff97f890a44000 RBP: ffffffffc0c189b8 R08: 0000000000000001 R09: 0000000000000000 R10: 0000000000000001 R11: 0000000000000300 R12: ffff97f890a44000 R13: ffffffffc0c36030 R14: 00000000fee1dead R15: 0000000000000000 FS: 00007f0d5a8a3b40(0000) GS:ffff98077fb80000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000555acbf4f450 CR3: 00000002a6f56002 CR4: 00000000001706e0 Call Trace: mlx5r_remove+0x39/0x60 [mlx5_ib] auxiliary_bus_remove+0x1b/0x30 __device_release_driver+0x17a/0x230 device_release_driver+0x24/0x30 bus_remove_device+0xdb/0x140 device_del+0x18b/0x3e0 mlx5_detach_device+0x59/0x90 [mlx5_core] mlx5_unload_one+0x22/0x60 [mlx5_core] shutdown+0x31/0x3a [mlx5_core] pci_device_shutdown+0x34/0x60 device_shutdown+0x15b/0x1c0 __do_sys_reboot.cold+0x2f/0x5b ? vfs_writev+0xc7/0x140 ? handle_mm_fault+0xc5/0x290 ? do_writev+0x6b/0x110 do_syscall_64+0x40/0x80 entry_SYSCALL_64_after_hwframe+0x44/0xae Fixes: e6fb246c ("RDMA/mlx5: Consolidate MR destruction to mlx5_ib_dereg_mr()") Link: https://lore.kernel.org/r/f3f585ea0db59c2a78f94f65eedeafc5a2374993.1623309971.git.leonro@nvidia.com Signed-off-by:Aharon Landau <aharonl@nvidia.com> Signed-off-by:
Leon Romanovsky <leonro@nvidia.com> Signed-off-by:
Jason Gunthorpe <jgg@nvidia.com>
| Name | Last commit | Last update |
|---|---|---|
| Documentation | ||
| LICENSES | ||
| arch | ||
| block | ||
| certs | ||
| crypto | ||
| drivers | ||
| fs | ||
| include | ||
| init | ||
| ipc | ||
| kernel | ||
| lib | ||
| mm | ||
| net | ||
| samples | ||
| scripts | ||
| security | ||
| sound | ||
| tools | ||
| usr | ||
| virt | ||
| .clang-format | ||
| .cocciconfig | ||
| .get_maintainer.ignore | ||
| .gitattributes | ||
| .gitignore | ||
| .mailmap | ||
| COPYING | ||
| CREDITS | ||
| Kbuild | ||
| Kconfig | ||
| MAINTAINERS | ||
| Makefile | ||
| README |