* [linux-next:master] [drbd] 945807e66a: Oops:general_protection_fault,probably_for_non-canonical_address#:#[##]KASAN_PTI
@ 2026-03-22 10:07 kernel test robot
0 siblings, 0 replies; only message in thread
From: kernel test robot @ 2026-03-22 10:07 UTC (permalink / raw)
To: Christoph Böhmwalder; +Cc: oe-lkp, lkp, drbd-dev, oliver.sang
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 <oliver.sang@intel.com>
| 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] <TASK>
[ 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
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2026-03-22 10:07 [linux-next:master] [drbd] 945807e66a: Oops:general_protection_fault,probably_for_non-canonical_address#:#[##]KASAN_PTI kernel test robot
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