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X-MS-Exchange-Transport-CrossTenantHeadersStamped: IA1PR11MB6490 X-OriginatorOrg: intel.com Hello, kernel test robot noticed "Oops:general_protection_fault,probably_for_non-canonical_address#:#[##]SMP_KASAN_PTI" on: commit: 78f8764d34c0a1912ce209bb2a428a94d062707f ("sched/fair: Forfeit vruntime on yield()") https://git.kernel.org/cgit/linux/kernel/git/tip/tip.git sched/urgent in testcase: trinity version: trinity-x86_64-ba2360ed-1_20241228 with following parameters: runtime: 300s group: group-03 nr_groups: 5 config: x86_64-randconfig-073-20250921 compiler: clang-20 test machine: qemu-system-x86_64 -enable-kvm -cpu SandyBridge -smp 2 -m 16G (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/202509251504.1f53d5d1-lkp@intel.com [ 172.153051][ T3790] Oops: general protection fault, probably for non-canonical address 0xdffffc000000000a: 0000 [#1] SMP KASAN PTI [ 172.156503][ T3790] KASAN: null-ptr-deref in range [0x0000000000000050-0x0000000000000057] [ 172.158211][ T3790] CPU: 1 UID: 65534 PID: 3790 Comm: trinity-c7 Not tainted 6.17.0-rc6-00001-g78f8764d34c0 #1 VOLUNTARY [ 172.159150][ T3790] RIP: 0010:pick_task_fair (kbuild/src/consumer/kernel/sched/fair.c:5525 kbuild/src/consumer/kernel/sched/fair.c:8758) [ 172.159674][ T3790] Code: 74 08 4c 89 f7 e8 28 63 55 00 4d 8b 2e eb 40 4c 89 e7 be 01 00 00 00 e8 d6 f9 00 00 49 89 c5 4c 8d 60 51 4c 89 e0 48 c1 e8 03 <8a> 04 18 84 c0 0f 85 a0 00 00 00 41 80 3c 24 00 74 13 48 8b 3c 24 All code ======== 0: 74 08 je 0xa 2: 4c 89 f7 mov %r14,%rdi 5: e8 28 63 55 00 call 0x556332 a: 4d 8b 2e mov (%r14),%r13 d: eb 40 jmp 0x4f f: 4c 89 e7 mov %r12,%rdi 12: be 01 00 00 00 mov $0x1,%esi 17: e8 d6 f9 00 00 call 0xf9f2 1c: 49 89 c5 mov %rax,%r13 1f: 4c 8d 60 51 lea 0x51(%rax),%r12 23: 4c 89 e0 mov %r12,%rax 26: 48 c1 e8 03 shr $0x3,%rax 2a:* 8a 04 18 mov (%rax,%rbx,1),%al <-- trapping instruction 2d: 84 c0 test %al,%al 2f: 0f 85 a0 00 00 00 jne 0xd5 35: 41 80 3c 24 00 cmpb $0x0,(%r12) 3a: 74 13 je 0x4f 3c: 48 8b 3c 24 mov (%rsp),%rdi Code starting with the faulting instruction =========================================== 0: 8a 04 18 mov (%rax,%rbx,1),%al 3: 84 c0 test %al,%al 5: 0f 85 a0 00 00 00 jne 0xab b: 41 80 3c 24 00 cmpb $0x0,(%r12) 10: 74 13 je 0x25 12: 48 8b 3c 24 mov (%rsp),%rdi [ 172.161272][ T3790] RSP: 0018:ffffc90006147bc0 EFLAGS: 00010006 [ 172.161779][ T3790] RAX: 000000000000000a RBX: dffffc0000000000 RCX: 0000000000000000 [ 172.162425][ T3790] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 [ 172.163106][ T3790] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 [ 172.163768][ T3790] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000051 [ 172.164429][ T3790] R13: 0000000000000000 R14: ffff8881aa616c60 R15: ffff8883af132210 [ 172.165093][ T3790] FS: 00007f7ee462a740(0000) GS:ffff888428b43000(0000) knlGS:0000000000000000 [ 172.165864][ T3790] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 172.166439][ T3790] CR2: 000055e445018050 CR3: 00000001bf01c000 CR4: 00000000000406b0 [ 172.167095][ T3790] DR0: 00007f7ee272f000 DR1: 0000000000000000 DR2: 0000000000000000 [ 172.167741][ T3790] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000030602 [ 172.168388][ T3790] Call Trace: [ 172.168665][ T3790] [ 172.168914][ T3790] pick_next_task_fair (kbuild/src/consumer/kernel/sched/fair.c:8779) [ 172.169368][ T3790] __pick_next_task (kbuild/src/consumer/kernel/sched/core.c:6002) [ 172.169774][ T3790] __schedule (kbuild/src/consumer/kernel/sched/core.c:? kbuild/src/consumer/kernel/sched/core.c:6902) [ 172.170152][ T3790] ? __cgroup_account_cputime (kbuild/src/consumer/arch/x86/include/asm/preempt.h:85 kbuild/src/consumer/kernel/cgroup/rstat.c:615 kbuild/src/consumer/kernel/cgroup/rstat.c:625) The kernel config and materials to reproduce are available at: https://download.01.org/0day-ci/archive/20250925/202509251504.1f53d5d1-lkp@intel.com -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki