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X-OriginatorOrg: intel.com Hello, kernel test robot noticed "Oops:general_protection_fault,probably_for_non-canonical_address#:#[##]SMP" on: commit: 58141fa298f3f1df4ee145835eb3491cfe68f652 ("futex: Use runtime constants for __futex_hash() hot path") https://git.kernel.org/cgit/linux/kernel/git/peterz/queue.git locking/core in testcase: boot config: x86_64-randconfig-012-20260704 compiler: gcc-14 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/202607091538.58e3f39-lkp@intel.com [ 1.259631][ T1] Running RCU Tasks Trace wait API self tests [ 1.261867][ T1] posixtimers hash table entries: 1024 (order: 5, 81920 bytes, linear) [ 1.264376][ T1] Oops: general protection fault, probably for non-canonical address 0x123456789abcdef: 0000 [#1] SMP [ 1.267507][ T1] CPU: 0 UID: 0 PID: 1 Comm: swapper/0 Not tainted 7.2.0-rc1+ #1 PREEMPTLAZY [ 1.267699][ T1] RIP: futex_init+0x1e4/0x2c0 [ 1.267699][ T1] Code: c1 e7 07 4c 01 e7 e8 bb f7 5c fb 4c 89 f6 48 89 ef e8 b0 f6 5f fb 4c 39 f5 75 d9 e8 a6 f4 5f fb 89 d8 8d 53 01 be 00 04 00 00 <4d> 89 24 c7 48 63 d2 48 c7 c7 80 f1 3c 85 e8 c9 fb 22 fc e9 2c ff All code ======== 0: c1 e7 07 shl $0x7,%edi 3: 4c 01 e7 add %r12,%rdi 6: e8 bb f7 5c fb call 0xfffffffffb5cf7c6 b: 4c 89 f6 mov %r14,%rsi e: 48 89 ef mov %rbp,%rdi 11: e8 b0 f6 5f fb call 0xfffffffffb5ff6c6 16: 4c 39 f5 cmp %r14,%rbp 19: 75 d9 jne 0xfffffffffffffff4 1b: e8 a6 f4 5f fb call 0xfffffffffb5ff4c6 20: 89 d8 mov %ebx,%eax 22: 8d 53 01 lea 0x1(%rbx),%edx 25: be 00 04 00 00 mov $0x400,%esi 2a:* 4d 89 24 c7 mov %r12,(%r15,%rax,8) <-- trapping instruction 2e: 48 63 d2 movslq %edx,%rdx 31: 48 c7 c7 80 f1 3c 85 mov $0xffffffff853cf180,%rdi 38: e8 c9 fb 22 fc call 0xfffffffffc22fc06 3d: e9 .byte 0xe9 3e: 2c ff sub $0xff,%al Code starting with the faulting instruction =========================================== 0: 4d 89 24 c7 mov %r12,(%r15,%rax,8) 4: 48 63 d2 movslq %edx,%rdx 7: 48 c7 c7 80 f1 3c 85 mov $0xffffffff853cf180,%rdi e: e8 c9 fb 22 fc call 0xfffffffffc22fbdc 13: e9 .byte 0xe9 14: 2c ff sub $0xff,%al [ 1.267699][ T1] RSP: 0000:ffffc90000013de8 EFLAGS: 00010246 [ 1.267699][ T1] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000 [ 1.267699][ T1] RDX: 0000000000000001 RSI: 0000000000000400 RDI: 0000000000000000 [ 1.267699][ T1] RBP: 0000000000000200 R08: 0000000000000000 R09: 0000000000000000 [ 1.267699][ T1] R10: 0000000000000000 R11: 0000000000000000 R12: ffff888100450000 [ 1.267699][ T1] R13: 0000000000010000 R14: 0000000000000200 R15: 0123456789abcdef [ 1.267699][ T1] FS: 0000000000000000(0000) GS:ffff888899778000(0000) knlGS:0000000000000000 [ 1.267699][ T1] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 1.267699][ T1] CR2: ffff88883ffff000 CR3: 0000000004ab8000 CR4: 00000000000406b0 [ 1.267699][ T1] Call Trace: [ 1.267699][ T1] [ 1.267699][ T1] ? fail_futex_debugfs+0x80/0x80 [ 1.267699][ T1] do_one_initcall+0x62/0x280 [ 1.267699][ T1] do_initcalls+0x177/0x1c0 [ 1.267699][ T1] kernel_init_freeable+0x11c/0x1c0 The kernel config and materials to reproduce are available at: https://download.01.org/0day-ci/archive/20260709/202607091538.58e3f39-lkp@intel.com -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki