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X-OriginatorOrg: intel.com Hello, kernel test robot noticed "kernel_BUG_at_mm/vmalloc.c" on: commit: 7a2723bc6f2ec12f6e8bfccdf20c09b84f721993 ("[PATCH 2/2] selftests/mm: add test for vrealloc() shrink page freeing") url: https://github.com/intel-lab-lkp/linux/commits/Jill-Ravaliya/selftests-mm-add-test-for-vrealloc-shrink-page-freeing/20260511-181706 base: https://git.kernel.org/cgit/linux/kernel/git/akpm/mm.git mm-everything patch link: https://lore.kernel.org/all/20260507114854.41117-2-jillravaliya@gmail.com/ patch subject: [PATCH 2/2] selftests/mm: add test for vrealloc() shrink page freeing in testcase: boot config: x86_64-kexec 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 | Closes: https://lore.kernel.org/oe-lkp/202605231524.731e5313-lkp@intel.com [ 3.859842][ T1] ------------[ cut here ]------------ [ 3.860491][ T1] kernel BUG at mm/vmalloc.c:488! [ 3.861026][ T1] Oops: invalid opcode: 0000 [#1] SMP PTI [ 3.861616][ T1] CPU: 0 UID: 0 PID: 1 Comm: systemd Not tainted 7.1.0-rc1-00283-g7a2723bc6f2e #1 PREEMPT(lazy) [ 3.862702][ T1] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 3.863724][ T1] RIP: 0010:__vunmap_range_noflush (vmalloc.c:501) [ 3.864346][ T1] Code: 7c 24 10 48 83 c4 58 5b 41 5c 41 5d 41 5e 41 5f 5d e9 7c 9d d2 ff 48 83 c4 58 5b 41 5c 41 5d 41 5e 41 5f 5d c3 cc cc cc cc cc <0f> 0b 66 66 66 66 66 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 80 00 00 All code ======== 0: 7c 24 jl 0x26 2: 10 48 83 adc %cl,-0x7d(%rax) 5: c4 (bad) 6: 58 pop %rax 7: 5b pop %rbx 8: 41 5c pop %r12 a: 41 5d pop %r13 c: 41 5e pop %r14 e: 41 5f pop %r15 10: 5d pop %rbp 11: e9 7c 9d d2 ff jmp 0xffffffffffd29d92 16: 48 83 c4 58 add $0x58,%rsp 1a: 5b pop %rbx 1b: 41 5c pop %r12 1d: 41 5d pop %r13 1f: 41 5e pop %r14 21: 41 5f pop %r15 23: 5d pop %rbp 24: c3 ret 25: cc int3 26: cc int3 27: cc int3 28: cc int3 29: cc int3 2a:* 0f 0b ud2 <-- trapping instruction 2c: 66 66 66 66 66 66 2e data16 data16 data16 data16 data16 cs nopw 0x0(%rax,%rax,1) 33: 0f 1f 84 00 00 00 00 3a: 00 3b: 0f .byte 0xf 3c: 1f (bad) 3d: 80 00 00 addb $0x0,(%rax) Code starting with the faulting instruction =========================================== 0: 0f 0b ud2 2: 66 66 66 66 66 66 2e data16 data16 data16 data16 data16 cs nopw 0x0(%rax,%rax,1) 9: 0f 1f 84 00 00 00 00 10: 00 11: 0f .byte 0xf 12: 1f (bad) 13: 80 00 00 addb $0x0,(%rax) [ 3.866197][ T1] RSP: 0018:ffffc90000013a70 EFLAGS: 00010246 [ 3.866816][ T1] RAX: ffffc90000035990 RBX: ffffc90000035000 RCX: 0000000000000000 [ 3.867632][ T1] RDX: 0000000000000000 RSI: ffffc90000036000 RDI: ffffc90000036000 [ 3.868442][ T1] RBP: 0000000000400dc0 R08: 00000000ffffffff R09: 0000000000000000 [ 3.869260][ T1] R10: ffffc90000035990 R11: ffffffff8215b050 R12: ffffc90000036000 [ 3.870088][ T1] R13: ffffc90000036000 R14: 0000000000000001 R15: ffff88810f5e18a0 [ 3.870907][ T1] FS: 00007f356fcade40(0000) GS:ffff88889c100000(0000) knlGS:0000000000000000 [ 3.871802][ T1] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 3.872461][ T1] CR2: 00007f3570966000 CR3: 000000010c872000 CR4: 00000000000406f0 [ 3.873270][ T1] Call Trace: [ 3.873666][ T1] [ 3.874083][ T1] ? krealloc_node_align_noprof (slub.c:?) [ 3.874811][ T1] ? find_instance (bpf/liveness.c:66) [ 3.875300][ T1] vrealloc_node_align_noprof (vmalloc.c:506 vmalloc.c:521 vmalloc.c:4345) [ 3.875883][ T1] bpf_patch_insn_data (bpf/fixups.c:254) [ 3.876410][ T1] bpf_convert_ctx_accesses (bpf/fixups.c:974) [ 3.876975][ T1] bpf_check (bpf/verifier.c:20094) [ 3.877441][ T1] bpf_prog_load (bpf/syscall.c:3082) [ 3.877951][ T1] __sys_bpf (bpf/syscall.c:6248) [ 3.878419][ T1] __x64_sys_bpf (bpf/syscall.c:6361 bpf/syscall.c:6359 bpf/syscall.c:6359) [ 3.878891][ T1] do_syscall_64 (x86/entry/syscall_64.c:63 x86/entry/syscall_64.c:94) [ 3.879373][ T1] entry_SYSCALL_64_after_hwframe (x86/entry/entry_64.S:121) [ 3.879974][ T1] RIP: 0033:0x7f3570834779 [ 3.880451][ T1] Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 4f 86 0d 00 f7 d8 64 89 01 48 All code ======== 0: ff c3 inc %ebx 2: 66 2e 0f 1f 84 00 00 cs nopw 0x0(%rax,%rax,1) 9: 00 00 00 c: 0f 1f 44 00 00 nopl 0x0(%rax,%rax,1) 11: 48 89 f8 mov %rdi,%rax 14: 48 89 f7 mov %rsi,%rdi 17: 48 89 d6 mov %rdx,%rsi 1a: 48 89 ca mov %rcx,%rdx 1d: 4d 89 c2 mov %r8,%r10 20: 4d 89 c8 mov %r9,%r8 23: 4c 8b 4c 24 08 mov 0x8(%rsp),%r9 28: 0f 05 syscall 2a:* 48 3d 01 f0 ff ff cmp $0xfffffffffffff001,%rax <-- trapping instruction 30: 73 01 jae 0x33 32: c3 ret 33: 48 8b 0d 4f 86 0d 00 mov 0xd864f(%rip),%rcx # 0xd8689 3a: f7 d8 neg %eax 3c: 64 89 01 mov %eax,%fs:(%rcx) 3f: 48 rex.W Code starting with the faulting instruction =========================================== 0: 48 3d 01 f0 ff ff cmp $0xfffffffffffff001,%rax 6: 73 01 jae 0x9 8: c3 ret 9: 48 8b 0d 4f 86 0d 00 mov 0xd864f(%rip),%rcx # 0xd865f 10: f7 d8 neg %eax 12: 64 89 01 mov %eax,%fs:(%rcx) 15: 48 rex.W [ 3.882300][ T1] RSP: 002b:00007ffcd8cbbc88 EFLAGS: 00000246 ORIG_RAX: 0000000000000141 [ 3.883149][ T1] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f3570834779 [ 3.883966][ T1] RDX: 0000000000000094 RSI: 00007ffcd8cbbd10 RDI: 0000000000000005 [ 3.884774][ T1] RBP: 0000000000000013 R08: 00007ffcd8cbbe40 R09: 0000559a2fc27b30 [ 3.885594][ T1] R10: 0000000000000013 R11: 0000000000000246 R12: 0000000000000094 [ 3.886456][ T1] R13: 00007ffcd8cbbd10 R14: 00007ffcd8cbbd10 R15: 0000000000000008 [ 3.887273][ T1] [ 3.887627][ T1] Modules linked in: [ 3.888071][ T1] ---[ end trace 0000000000000000 ]--- [ 3.888642][ T1] RIP: 0010:__vunmap_range_noflush (vmalloc.c:501) [ 3.889273][ T1] Code: 7c 24 10 48 83 c4 58 5b 41 5c 41 5d 41 5e 41 5f 5d e9 7c 9d d2 ff 48 83 c4 58 5b 41 5c 41 5d 41 5e 41 5f 5d c3 cc cc cc cc cc <0f> 0b 66 66 66 66 66 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 80 00 00 All code ======== 0: 7c 24 jl 0x26 2: 10 48 83 adc %cl,-0x7d(%rax) 5: c4 (bad) 6: 58 pop %rax 7: 5b pop %rbx 8: 41 5c pop %r12 a: 41 5d pop %r13 c: 41 5e pop %r14 e: 41 5f pop %r15 10: 5d pop %rbp 11: e9 7c 9d d2 ff jmp 0xffffffffffd29d92 16: 48 83 c4 58 add $0x58,%rsp 1a: 5b pop %rbx 1b: 41 5c pop %r12 1d: 41 5d pop %r13 1f: 41 5e pop %r14 21: 41 5f pop %r15 23: 5d pop %rbp 24: c3 ret 25: cc int3 26: cc int3 27: cc int3 28: cc int3 29: cc int3 2a:* 0f 0b ud2 <-- trapping instruction 2c: 66 66 66 66 66 66 2e data16 data16 data16 data16 data16 cs nopw 0x0(%rax,%rax,1) 33: 0f 1f 84 00 00 00 00 3a: 00 3b: 0f .byte 0xf 3c: 1f (bad) 3d: 80 00 00 addb $0x0,(%rax) Code starting with the faulting instruction =========================================== 0: 0f 0b ud2 2: 66 66 66 66 66 66 2e data16 data16 data16 data16 data16 cs nopw 0x0(%rax,%rax,1) 9: 0f 1f 84 00 00 00 00 10: 00 11: 0f .byte 0xf 12: 1f (bad) 13: 80 00 00 addb $0x0,(%rax) The kernel config and materials to reproduce are available at: https://download.01.org/0day-ci/archive/20260523/202605231524.731e5313-lkp@intel.com -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki