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X-MS-Exchange-Transport-CrossTenantHeadersStamped: PH3PPF740777B0C X-OriginatorOrg: intel.com Hello, kernel test robot noticed "Oops:general_protection_fault,probably_for_non-canonical_address#:#[##]SMP_KASAN_NOPTI" on: commit: 25efcff06654aa283be379420e8b1f8d344c2f78 ("btrfs_get_tree_subvol(): switch from fc_mount() to vfs_create_mount()") https://git.kernel.org/cgit/linux/kernel/git/next/linux-next.git master [test failed on linux-next/master 08710e696081d58163c8078e0e096be6d35c5fad] in testcase: xfstests version: xfstests-x86_64-8467552f-1_20241215 with following parameters: disk: 4HDD fs: xfs test: xfs-scratch-reflink-25 NOTE sorry if above xfs-related tests cause confusion. as below dmesg, the issue happens for a btrfs partition (label LKP-ROOTFS, which is mounted before testing for various purposes in our bot process) config: x86_64-rhel-9.4-func compiler: gcc-12 test machine: 128 threads 2 sockets Intel(R) Xeon(R) Platinum 8358 CPU @ 2.60GHz (Ice Lake) with 128G 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 | Closes: https://lore.kernel.org/oe-lkp/202505081540.3f2a6418-lkp@intel.com [ 154.907294][ T1546] [ 154.943247][ T2459] BTRFS: device label LKP-ROOTFS devid 1 transid 3324 /dev/sda1 (8:1) scanned by mount (2459) [ 154.963798][ T2459] BTRFS info (device sda1): first mount of filesystem 276a1e11-946d-4e8e-902f-6037a50202d5 [ 154.974415][ T2459] BTRFS info (device sda1): using crc32c (crc32c-x86_64) checksum algorithm [ 154.983406][ T2459] BTRFS info (device sda1): using free-space-tree [ 155.158064][ T2459] Oops: general protection fault, probably for non-canonical address 0xdffffc000000000d: 0000 [#1] SMP KASAN NOPTI [ 155.170763][ T2459] KASAN: null-ptr-deref in range [0x0000000000000068-0x000000000000006f] [ 155.179430][ T2459] CPU: 16 UID: 0 PID: 2459 Comm: mount Not tainted 6.15.0-rc5-00204-g25efcff06654 #1 PREEMPT(voluntary) [ 155.190880][ T2459] Hardware name: Intel Corporation M50CYP2SB1U/M50CYP2SB1U, BIOS SE5C620.86B.01.01.0009.2311021928 11/02/2023 [ 155.203187][ T2459] RIP: 0010:btrfs_get_tree_subvol (kbuild/obj/consumer/x86_64-rhel-9.4-func/fs/btrfs/super.c:2065) btrfs [ 155.210334][ T2459] Code: 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 97 04 00 00 48 b8 00 00 00 00 00 fc ff df 4c 8b 73 40 49 8d 7e 68 48 89 fa 48 c1 ea 03 <80> 3c 02 00 74 49 e8 a5 9c 76 c0 eb 42 48 b8 00 00 00 00 00 fc ff All code ======== 0: 48 89 fa mov %rdi,%rdx 3: 48 c1 ea 03 shr $0x3,%rdx 7: 80 3c 02 00 cmpb $0x0,(%rdx,%rax,1) b: 0f 85 97 04 00 00 jne 0x4a8 11: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax 18: fc ff df 1b: 4c 8b 73 40 mov 0x40(%rbx),%r14 1f: 49 8d 7e 68 lea 0x68(%r14),%rdi 23: 48 89 fa mov %rdi,%rdx 26: 48 c1 ea 03 shr $0x3,%rdx 2a:* 80 3c 02 00 cmpb $0x0,(%rdx,%rax,1) <-- trapping instruction 2e: 74 49 je 0x79 30: e8 a5 9c 76 c0 call 0xffffffffc0769cda 35: eb 42 jmp 0x79 37: 48 rex.W 38: b8 00 00 00 00 mov $0x0,%eax 3d: 00 fc add %bh,%ah 3f: ff .byte 0xff Code starting with the faulting instruction =========================================== 0: 80 3c 02 00 cmpb $0x0,(%rdx,%rax,1) 4: 74 49 je 0x4f 6: e8 a5 9c 76 c0 call 0xffffffffc0769cb0 b: eb 42 jmp 0x4f d: 48 rex.W e: b8 00 00 00 00 mov $0x0,%eax 13: 00 fc add %bh,%ah 15: ff .byte 0xff [ 155.230675][ T2459] RSP: 0018:ffa000000f4cfa48 EFLAGS: 00010202 [ 155.237047][ T2459] RAX: dffffc0000000000 RBX: ff110010e271aa00 RCX: 1fe2200036ed4404 [ 155.245329][ T2459] RDX: 000000000000000d RSI: 0000000000000004 RDI: 0000000000000068 [ 155.253614][ T2459] RBP: 1ff4000001e99f4d R08: 0000000000000000 R09: fffffbfff0ef4144 [ 155.261897][ T2459] R10: ffffffff877a0a23 R11: 0000000000000001 R12: ff110010a6ab8380 [ 155.270184][ T2459] R13: ff110010fdcb8000 R14: 0000000000000000 R15: ff11001089c122e0 [ 155.278469][ T2459] FS: 00007efe6004e840(0000) GS:ff11000cb7444000(0000) knlGS:0000000000000000 [ 155.287711][ T2459] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 155.294608][ T2459] CR2: 000055cc21afb098 CR3: 0000001099c7a003 CR4: 0000000000771ef0 [ 155.302903][ T2459] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 155.311194][ T2459] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 155.319482][ T2459] PKRU: 55555554 [ 155.323337][ T2459] Call Trace: [ 155.326929][ T2459] [ 155.330164][ T2459] ? security_fs_context_parse_param (kbuild/obj/consumer/x86_64-rhel-9.4-func/security/security.c:1387 (discriminator 4)) [ 155.336625][ T2459] ? __pfx_btrfs_get_tree_subvol (kbuild/obj/consumer/x86_64-rhel-9.4-func/fs/btrfs/super.c:2014) btrfs [ 155.343515][ T2459] ? vfs_parse_fs_string (kbuild/obj/consumer/x86_64-rhel-9.4-func/fs/fs_context.c:172) [ 155.349014][ T2459] ? __pfx_vfs_parse_fs_string (kbuild/obj/consumer/x86_64-rhel-9.4-func/fs/fs_context.c:172) The kernel config and materials to reproduce are available at: https://download.01.org/0day-ci/archive/20250508/202505081540.3f2a6418-lkp@intel.com -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki