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cc5460ce-2cc4-4169-6e29-08de87face54 X-MS-Exchange-CrossTenant-AuthSource: PH0PR11MB5832.namprd11.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 22 Mar 2026 10:07:20.7943 (UTC) X-MS-Exchange-CrossTenant-FromEntityHeader: Hosted X-MS-Exchange-CrossTenant-Id: 46c98d88-e344-4ed4-8496-4ed7712e255d X-MS-Exchange-CrossTenant-MailboxType: HOSTED X-MS-Exchange-CrossTenant-UserPrincipalName: 2gJJ79Q3E8FW8ky37XHlBVeTlyydhizxopxNaRj+jntqPldMW024mLnS9fg/b7W7c35SyJCIAWYu7y5sG7P10A== X-MS-Exchange-Transport-CrossTenantHeadersStamped: PH8PR11MB6927 X-OriginatorOrg: intel.com Hello, by this commit, we noticed below config diff comparing to parent: --- /pkg/linux/x86_64-randconfig-006-20260320/clang-20/0c897516a4856d55c75cfdb2b02489b0fc50bdf8/.config 2026-03-20 21:35:52.410943578 +0800 +++ /pkg/linux/x86_64-randconfig-006-20260320/clang-20/945807e66a140e5ee0f919d04e15eadd4cc294be/.config 2026-03-20 16:40:42.155357399 +0800 @@ -1738,6 +1738,12 @@ CONFIG_ZRAM_WRITEBACK=y # CONFIG_ZRAM_MEMORY_TRACKING is not set # CONFIG_ZRAM_MULTI_COMP is not set # CONFIG_BLK_DEV_LOOP is not set +CONFIG_BLK_DEV_DRBD=y +# CONFIG_DRBD_FAULT_INJECTION is not set +CONFIG_BLK_DEV_DRBD_TCP=y +# CONFIG_BLK_DEV_DRBD_LB_TCP is not set +# CONFIG_BLK_DEV_DRBD_RDMA is not set +CONFIG_DRBD_COMPAT_84=y # CONFIG_BLK_DEV_NBD is not set CONFIG_BLK_DEV_RAM=y CONFIG_BLK_DEV_RAM_COUNT=16 @@ -5795,6 +5801,7 @@ CONFIG_IOMMU_HELPER=y CONFIG_FORCE_NR_CPUS=y CONFIG_GLOB=y CONFIG_NLATTR=y +CONFIG_LRU_CACHE=y CONFIG_CLZ_TAB=y CONFIG_IRQ_POLL=y CONFIG_MPILIB=y as we understand, this commit reenabled drbd. this report is just FYI what we observed in our tests that there are drbd related issues after this enabling. kernel test robot noticed "Oops:general_protection_fault,probably_for_non-canonical_address#:#[##]KASAN_PTI" on: commit: 945807e66a140e5ee0f919d04e15eadd4cc294be ("drbd: remove BROKEN for DRBD") https://git.kernel.org/cgit/linux/kernel/git/next/linux-next.git master [test failed on linux-next/master 785f0eb2f85decbe7c1ef9ae922931f0194ffc2e] in testcase: boot config: x86_64-randconfig-006-20260320 compiler: clang-20 test machine: qemu-system-x86_64 -enable-kvm -cpu SandyBridge -smp 2 -m 32G (please refer to attached dmesg/kmsg for entire log/backtrace) If you fix the issue in a separate patch/commit (i.e. not just a new version of the same patch/commit), kindly add following tags | Reported-by: kernel test robot | Closes: https://lore.kernel.org/oe-lkp/202603221745.8279cd80-lkp@intel.com [ 24.381821][ T56] FDC 0 is a S82078B [ 24.401375][ T1] brd: module loaded [ 24.480448][ T1] drbd: initialized. Version: 9.3.0 (api:2/proto:118-123) [ 24.481932][ T1] drbd: built-in [ 24.482693][ T1] drbd: registered as block device major 147 [ 24.486081][ T1] Oops: general protection fault, probably for non-canonical address 0xdffffc0000000021: 0000 [#1] KASAN PTI [ 24.487070][ T1] KASAN: null-ptr-deref in range [0x0000000000000108-0x000000000000010f] [ 24.487070][ T1] CPU: 0 UID: 0 PID: 1 Comm: swapper/0 Tainted: G T 7.0.0-rc4-00020-g945807e66a14 #1 PREEMPT(full) 657bb35ca7e5e0c42c8110b4a9a3d43552818707 [ 24.487070][ T1] Tainted: [T]=RANDSTRUCT [ 24.487070][ T1] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 24.487070][ T1] RIP: 0010:drbd_register_transport_class (kbuild/src/consumer/drivers/block/drbd/drbd_transport.c:44 (discriminator 1027)) [ 24.487070][ T1] Code: c0 00 00 00 48 89 d8 48 c1 e8 03 42 80 3c 28 00 74 08 48 89 df e8 fa 8d 33 fd 41 bf 08 01 00 00 4c 03 3b 4c 89 f8 48 c1 e8 03 <42> 80 3c 28 00 74 08 4c 89 ff e8 db 8d 33 fd 49 8b 07 48 85 c0 48 All code ======== 0: c0 00 00 rolb $0x0,(%rax) 3: 00 48 89 add %cl,-0x77(%rax) 6: d8 48 c1 fmuls -0x3f(%rax) 9: e8 03 42 80 3c call 0x3c804211 e: 28 00 sub %al,(%rax) 10: 74 08 je 0x1a 12: 48 89 df mov %rbx,%rdi 15: e8 fa 8d 33 fd call 0xfffffffffd338e14 1a: 41 bf 08 01 00 00 mov $0x108,%r15d 20: 4c 03 3b add (%rbx),%r15 23: 4c 89 f8 mov %r15,%rax 26: 48 c1 e8 03 shr $0x3,%rax 2a:* 42 80 3c 28 00 cmpb $0x0,(%rax,%r13,1) <-- trapping instruction 2f: 74 08 je 0x39 31: 4c 89 ff mov %r15,%rdi 34: e8 db 8d 33 fd call 0xfffffffffd338e14 39: 49 8b 07 mov (%r15),%rax 3c: 48 85 c0 test %rax,%rax 3f: 48 rex.W Code starting with the faulting instruction =========================================== 0: 42 80 3c 28 00 cmpb $0x0,(%rax,%r13,1) 5: 74 08 je 0xf 7: 4c 89 ff mov %r15,%rdi a: e8 db 8d 33 fd call 0xfffffffffd338dea f: 49 8b 07 mov (%r15),%rax 12: 48 85 c0 test %rax,%rax 15: 48 rex.W [ 24.487070][ T1] RSP: 0000:ffffc9000001fab0 EFLAGS: 00010206 [ 24.487070][ T1] RAX: 0000000000000021 RBX: ffffffff8a1514a0 RCX: 0000000000000000 [ 24.487070][ T1] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 [ 24.487070][ T1] RBP: ffffc9000001fae8 R08: 0000000000000000 R09: 0000000000000000 [ 24.487070][ T1] R10: 0000000000000000 R11: 0000000000000000 R12: ffffffff8a1514b0 [ 24.487070][ T1] R13: dffffc0000000000 R14: ffffffff881d2a80 R15: 0000000000000108 [ 24.487070][ T1] FS: 0000000000000000(0000) GS:0000000000000000(0000) knlGS:0000000000000000 [ 24.487070][ T1] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 24.487070][ T1] CR2: ffff88883ffff000 CR3: 0000000009438000 CR4: 00000000000406f0 [ 24.487070][ T1] Call Trace: [ 24.487070][ T1] [ 24.487070][ T1] dtt_initialize (kbuild/src/consumer/drivers/block/drbd/drbd_transport_tcp.c:?) [ 24.487070][ T1] __initstub__kmod_drbd_transport_tcp__1030_1667_dtt_initialize6 (kbuild/src/consumer/drivers/block/drbd/drbd_transport_tcp.c:1667) [ 24.487070][ T1] do_one_initcall (kbuild/src/consumer/init/main.c:1382) [ 24.487070][ T1] ? __cfi___initstub__kmod_drbd_transport_tcp__1030_1667_dtt_initialize6 (kbuild/src/consumer/drivers/block/drbd/drbd_transport_tcp.c:1667) The kernel config and materials to reproduce are available at: https://download.01.org/0day-ci/archive/20260322/202603221745.8279cd80-lkp@intel.com -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki