Hello,

kernel test robot noticed "Oops:general_protection_fault,probably_for_non-canonical_address#:#[##]SMP_KASAN_PTI" on:

commit: 142f20971642be40507d3a0bc94e905e251db81a ("[PATCH 1/2] dma-buf: Add __dma_fence_is_signaled()") url: https://github.com/intel-lab-lkp/linux/commits/Philipp-Stanner/dma-buf-dma-f... base: git://linuxtv.org/sailus/media_tree.git master patch link: https://lore.kernel.org/all/20251125104443.82974-2-phasta@kernel.org/ patch subject: [PATCH 1/2] dma-buf: Add __dma_fence_is_signaled()

in testcase: lkvs version: lkvs-x86_64-6505b18-1_20251124 with following parameters:

test: rapl-client

config: x86_64-rhel-9.4-func compiler: gcc-14 test machine: 4 threads Intel(R) Core(TM) i5-6500 CPU @ 3.20GHz (Skylake) with 32G memory

(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/202512092317.8cf778a-lkp@intel.com

[ 46.662293][ T179] i915 0000:00:02.0: vgaarb: VGA decodes changed: olddecodes=io+mem,decodes=io+mem:owns=io+mem [ 46.680656][ T40] sd 1:0:0:0: [sda] Preferred minimum I/O size 4096 bytes [ 46.682302][ T59] i915 0000:00:02.0: Direct firmware load for i915/skl_dmc_ver1_27.bin failed with error -2 [ 46.698362][ T59] i915 0000:00:02.0: [drm] Failed to load DMC firmware i915/skl_dmc_ver1_27.bin (-ENOENT). Disabling runtime power management. [ 46.711256][ T59] i915 0000:00:02.0: [drm] DMC firmware homepage: https://git.kernel.org/pub/scm/linux/kernel/git/firmware/linux-firmware.git [ 46.725941][ T12] Oops: general protection fault, probably for non-canonical address 0xdffffc01544551ba: 0000 [#1] SMP KASAN PTI [ 46.725953][ T179] ------------[ cut here ]------------ [ 46.737600][ T12] KASAN: probably user-memory-access in range [0x0000000aa22a8dd0-0x0000000aa22a8dd7] [ 46.737612][ T12] CPU: 3 UID: 0 PID: 12 Comm: kworker/u16:0 Tainted: G S I 6.18.0-rc5-00236-g142f20971642 #1 PREEMPT(voluntary) [ 46.742889][ T179] Fence 0000:00:02.0:[i915]:9:2 released with pending signals! [ 46.752212][ T12] Tainted: [S]=CPU_OUT_OF_SPEC, [I]=FIRMWARE_WORKAROUND [ 46.752217][ T12] Hardware name: Dell Inc. OptiPlex 7040/0Y7WYT, BIOS 1.1.1 10/07/2015 [ 46.752220][ T12] Workqueue: i915 __i915_gem_free_work [i915] [ 46.765216][ T179] WARNING: CPU: 0 PID: 179 at drivers/dma-buf/dma-fence.c:555 dma_fence_release (kbuild/src/consumer/drivers/dma-buf/dma-fence.c:555 (discriminator 1)) [ 46.772517][ T12] [ 46.772521][ T12] RIP: 0010:__list_add_valid_or_report (kbuild/src/consumer/lib/list_debug.c:29) [ 46.772528][ T12] Code: 8b 98 fe 48 89 d3 48 85 d2 0f 84 af 8b 98 fe 4c 8d 62 08 48 89 fd 49 89 f5 48 b8 00 00 00 00 00 fc ff df 4c 89 e2 48 c1 ea 03 <80> 3c 02 00 0f 85 b7 00 00 00 4c 39 6b 08 75 43 48 b8 00 00 00 00 All code ======== 0: 8b 98 fe 48 89 d3 mov -0x2c76b702(%rax),%ebx 6: 48 85 d2 test %rdx,%rdx 9: 0f 84 af 8b 98 fe je 0xfffffffffe988bbe f: 4c 8d 62 08 lea 0x8(%rdx),%r12 13: 48 89 fd mov %rdi,%rbp 16: 49 89 f5 mov %rsi,%r13 19: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax 20: fc ff df 23: 4c 89 e2 mov %r12,%rdx 26: 48 c1 ea 03 shr $0x3,%rdx 2a:* 80 3c 02 00 cmpb $0x0,(%rdx,%rax,1) <-- trapping instruction 2e: 0f 85 b7 00 00 00 jne 0xeb 34: 4c 39 6b 08 cmp %r13,0x8(%rbx) 38: 75 43 jne 0x7d 3a: 48 rex.W 3b: b8 00 00 00 00 mov $0x0,%eax

Code starting with the faulting instruction =========================================== 0: 80 3c 02 00 cmpb $0x0,(%rdx,%rax,1) 4: 0f 85 b7 00 00 00 jne 0xc1 a: 4c 39 6b 08 cmp %r13,0x8(%rbx) e: 75 43 jne 0x53 10: 48 rex.W 11: b8 00 00 00 00 mov $0x0,%eax [ 46.779267][ T179] Modules linked in: [ 46.787293][ T12] RSP: 0018:ffffc9000010fac8 EFLAGS: 00010003 [ 46.787300][ T12] RAX: dffffc0000000000 RBX: 0000000aa22a8dcf RCX: ffffffff82f5859d [ 46.793179][ T179] platform_profile [ 46.803018][ T12] RDX: 00000001544551ba RSI: ffff88884fde5c90 RDI: ffffc9000010fb50 [ 46.803023][ T12] RBP: ffffc9000010fb50 R08: 0000000000000000 R09: ffffed1109fbcb96 [ 46.803025][ T12] R10: ffff88884fde5cb7 R11: fefefefefefefeff R12: 0000000aa22a8dd7 [ 46.805219][ T179] sd_mod [ 46.811413][ T12] R13: ffff88884fde5c90 R14: ffff88884fde5c90 R15: 0000000aa22a8dcf [ 46.811417][ T12] FS: 0000000000000000(0000) GS:ffff888848e3e000(0000) knlGS:0000000000000000 [ 46.811419][ T12] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 46.830755][ T179] intel_rapl_common [ 46.834463][ T12] CR2: 00007f3bc83ae000 CR3: 0000000868388002 CR4: 00000000003726f0 [ 46.834467][ T12] Call Trace: [ 46.834469][ T12] <TASK> [ 46.840348][ T179] snd_hda_core [ 46.848115][ T12] dma_fence_default_wait (kbuild/src/consumer/include/linux/list.h:158 (discriminator 1) kbuild/src/consumer/include/linux/list.h:177 (discriminator 1) kbuild/src/consumer/drivers/dma-buf/dma-fence.c:800 (discriminator 1)) [ 46.851758][ T179] x86_pkg_temp_thermal [ 46.859527][ T12] ? __pfx_dma_fence_default_wait (kbuild/src/consumer/drivers/dma-buf/dma-fence.c:778)

The kernel config and materials to reproduce are available at: https://download.01.org/0day-ci/archive/20251209/202512092317.8cf778a-lkp@in...