ci2 starts bisection 2023-06-16 20:14:30.7320669 +0000 UTC m=+81493.924863650 bisecting fixing commit since 72d681a01da5f02769fd75f229ed2f9276894c4f building syzkaller on cc0f9968db1abe397e6c93bf4f5dff51be20f914 ensuring issue is reproducible on original commit 72d681a01da5f02769fd75f229ed2f9276894c4f testing commit 72d681a01da5f02769fd75f229ed2f9276894c4f gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.35.2 kernel signature: 0892a871c7ec351449b8b115a71e5341fa503090fb7d12a741111201d9d01bd5 run #0: crashed: general protection fault in vma_interval_tree_insert_after run #1: crashed: general protection fault in vma_interval_tree_insert_after run #2: crashed: general protection fault in vma_interval_tree_insert_after run #3: crashed: BUG: unable to handle kernel paging request in vma_interval_tree_insert_after run #4: crashed: KASAN: invalid-free in anon_vma_name_free run #5: crashed: general protection fault in vma_interval_tree_insert_after run #6: crashed: general protection fault in vma_interval_tree_insert_after run #7: crashed: KASAN: invalid-free in anon_vma_name_free run #8: crashed: KASAN: invalid-free in anon_vma_name_free run #9: crashed: KASAN: invalid-free in anon_vma_name_free run #10: crashed: KASAN: invalid-free in anon_vma_name_free run #11: crashed: general protection fault in vma_interval_tree_insert_after run #12: crashed: general protection fault in vma_interval_tree_insert_after run #13: crashed: BUG: unable to handle kernel paging request in vma_interval_tree_insert_after run #14: crashed: BUG: unable to handle kernel paging request in vma_interval_tree_insert_after run #15: crashed: general protection fault in vma_interval_tree_insert_after run #16: crashed: BUG: unable to handle kernel paging request in vma_interval_tree_insert_after run #17: crashed: BUG: unable to handle kernel paging request in vma_interval_tree_insert_after run #18: crashed: BUG: unable to handle kernel paging request in vma_interval_tree_insert_after run #19: crashed: BUG: unable to handle kernel paging request in vma_interval_tree_insert_after testing current HEAD 36f4f6fb72d5389535cfd2bdb5a29fefe34e3a21 testing commit 36f4f6fb72d5389535cfd2bdb5a29fefe34e3a21 gcc compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.35.2 kernel signature: 9831ab3357b8098b3052d93778e49ca91ecd95690ce044f66ba77d967b629871 run #0: crashed: BUG: unable to handle kernel paging request in vma_interval_tree_remove run #1: crashed: KASAN: invalid-free in anon_vma_name_free run #2: crashed: KASAN: invalid-free in anon_vma_name_free run #3: crashed: general protection fault in vma_interval_tree_insert_after run #4: crashed: general protection fault in vma_interval_tree_insert_after run #5: crashed: BUG: unable to handle kernel paging request in vma_interval_tree_insert_after run #6: crashed: BUG: unable to handle kernel paging request in vma_interval_tree_insert_after run #7: crashed: KASAN: invalid-free in anon_vma_name_free run #8: crashed: general protection fault in vma_interval_tree_insert_after run #9: crashed: KASAN: invalid-free in anon_vma_name_free crash still not fixed/happens on the oldest tested release revisions tested: 2, total time: 35m29.281021758s (build: 20m19.252880226s, test: 14m24.645695363s) crash still not fixed on HEAD or HEAD had kernel test errors commit msg: Merge branch 'android13-5.15' into 'android13-5.15-lts' crash: KASAN: invalid-free in anon_vma_name_free Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 f1 19 00 00 90 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 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f284b52e118 EFLAGS: 00000206 ORIG_RAX: 0000000000000038 RAX: ffffffffffffffda RBX: 00007f284badaf80 RCX: 00007f284b9bb0c9 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000001802200 RBP: 00007f284b52e1d0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000206 R12: 0000000000000002 R13: 00007ffcedf6ddff R14: 00007f284b52e300 R15: 0000000000022000 ================================================================== BUG: KASAN: double-free or invalid-free in slab_free mm/slub.c:3517 [inline] BUG: KASAN: double-free or invalid-free in kfree+0xc2/0x270 mm/slub.c:4577 CPU: 1 PID: 440 Comm: syz-executor.0 Not tainted 5.15.106-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/27/2023 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x38/0x49 lib/dump_stack.c:106 print_address_description.constprop.0+0x24/0x160 mm/kasan/report.c:248 kasan_report_invalid_free+0x75/0xa0 mm/kasan/report.c:370 ____kasan_slab_free mm/kasan/common.c:345 [inline] __kasan_slab_free+0x134/0x150 mm/kasan/common.c:373 kasan_slab_free include/linux/kasan.h:193 [inline] slab_free_hook mm/slub.c:1723 [inline] slab_free_freelist_hook+0x94/0x1a0 mm/slub.c:1749 slab_free mm/slub.c:3517 [inline] kfree+0xc2/0x270 mm/slub.c:4577 anon_vma_name_free+0x9/0x10 mm/madvise.c:90 kref_put include/linux/kref.h:65 [inline] anon_vma_name_put include/linux/mm_inline.h:365 [inline] free_anon_vma_name include/linux/mm_inline.h:396 [inline] vm_area_free_no_check+0xd1/0x150 kernel/fork.c:405 vm_area_free kernel/fork.c:418 [inline] dup_mmap kernel/fork.c:680 [inline] dup_mm+0xec8/0x1240 kernel/fork.c:1513 copy_mm kernel/fork.c:1565 [inline] copy_process+0x4370/0x6110 kernel/fork.c:2256 kernel_clone+0xc1/0x960 kernel/fork.c:2659 __do_sys_clone+0xc9/0x100 kernel/fork.c:2785 __se_sys_clone kernel/fork.c:2769 [inline] __x64_sys_clone+0xb9/0x140 kernel/fork.c:2769 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x61/0xcb RIP: 0033:0x7f284b9bb0c9 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 f1 19 00 00 90 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 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f284b52e118 EFLAGS: 00000206 ORIG_RAX: 0000000000000038 RAX: ffffffffffffffda RBX: 00007f284badaf80 RCX: 00007f284b9bb0c9 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000001802200 RBP: 00007f284b52e1d0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000206 R12: 0000000000000002 R13: 00007ffcedf6ddff R14: 00007f284b52e300 R15: 0000000000022000 Allocated by task 361: kasan_save_stack+0x26/0x50 mm/kasan/common.c:38 kasan_set_track mm/kasan/common.c:45 [inline] set_alloc_info mm/kasan/common.c:433 [inline] __kasan_slab_alloc+0x94/0xc0 mm/kasan/common.c:466 kasan_slab_alloc include/linux/kasan.h:217 [inline] slab_post_alloc_hook mm/slab.h:550 [inline] slab_alloc_node mm/slub.c:3238 [inline] slab_alloc mm/slub.c:3246 [inline] kmem_cache_alloc+0x197/0x4a0 mm/slub.c:3251 vm_area_alloc+0x1d/0x150 kernel/fork.c:359 mmap_region+0x5e8/0x12f0 mm/mmap.c:1780 do_mmap+0x5b3/0xdf0 mm/mmap.c:1584 vm_mmap_pgoff+0x173/0x3e0 mm/util.c:554 vm_mmap+0x28/0x40 mm/util.c:574 elf_map+0x199/0x220 fs/binfmt_elf.c:392 load_elf_binary+0x9bd/0x4340 fs/binfmt_elf.c:1141 search_binary_handler fs/exec.c:1739 [inline] exec_binprm fs/exec.c:1780 [inline] bprm_execve fs/exec.c:1849 [inline] bprm_execve+0x609/0x1260 fs/exec.c:1811 do_execveat_common+0x5fd/0x7b0 fs/exec.c:1954 do_execve fs/exec.c:2024 [inline] __do_sys_execve fs/exec.c:2100 [inline] __se_sys_execve fs/exec.c:2095 [inline] __x64_sys_execve+0x8a/0xb0 fs/exec.c:2095 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x61/0xcb Last potentially related work creation: kasan_save_stack+0x26/0x50 mm/kasan/common.c:38 __kasan_record_aux_stack+0xd8/0xf0 mm/kasan/generic.c:348 kasan_record_aux_stack_noalloc+0xb/0x10 mm/kasan/generic.c:358 __call_rcu kernel/rcu/tree.c:2993 [inline] call_rcu+0xfe/0x1400 kernel/rcu/tree.c:3073 free_vm_area_struct kernel/fork.c:394 [inline] vm_area_free_no_check+0x7a/0x150 kernel/fork.c:408 vm_area_free+0x36/0x40 kernel/fork.c:418 remove_vma mm/mmap.c:190 [inline] exit_mmap+0x2dc/0x710 mm/mmap.c:3217 __mmput+0x70/0x3a0 kernel/fork.c:1171 mmput kernel/fork.c:1194 [inline] mmput+0x35/0xf0 kernel/fork.c:1188 exit_mm kernel/exit.c:551 [inline] do_exit+0x87d/0x2410 kernel/exit.c:862 do_group_exit+0xe6/0x290 kernel/exit.c:997 __do_sys_exit_group kernel/exit.c:1008 [inline] __se_sys_exit_group kernel/exit.c:1006 [inline] __x64_sys_exit_group+0x3e/0x50 kernel/exit.c:1006 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x61/0xcb The buggy address belongs to the object at ffff88810c050b90 which belongs to the cache vm_area_struct of size 232 The buggy address is located 88 bytes inside of 232-byte region [ffff88810c050b90, ffff88810c050c78) The buggy address belongs to the page: page:ffffea0004301400 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x10c050 flags: 0x4000000000000200(slab|zone=1) raw: 4000000000000200 dead000000000100 dead000000000122 ffff8881001b5c80 raw: 0000000000000000 00000000000d000d 00000001ffffffff 0000000000000000 page dumped because: kasan: bad access detected page_owner tracks the page as allocated page last allocated via order 0, migratetype Unmovable, gfp_mask 0x12cc0(GFP_KERNEL|__GFP_NOWARN|__GFP_NORETRY), pid 73, ts 2787990343, free_ts 2785622801 set_page_owner include/linux/page_owner.h:33 [inline] post_alloc_hook+0x13a/0x160 mm/page_alloc.c:2595 prep_new_page mm/page_alloc.c:2601 [inline] get_page_from_freelist+0x1b1a/0x2b50 mm/page_alloc.c:4394 __alloc_pages+0x272/0x580 mm/page_alloc.c:5679 __alloc_pages_node include/linux/gfp.h:591 [inline] alloc_pages_node include/linux/gfp.h:605 [inline] alloc_pages include/linux/gfp.h:618 [inline] alloc_slab_page mm/slub.c:1793 [inline] allocate_slab+0x320/0x460 mm/slub.c:1930 new_slab mm/slub.c:1993 [inline] ___slab_alloc.constprop.0+0x427/0xa80 mm/slub.c:3026 __slab_alloc.constprop.0+0x4a/0xa0 mm/slub.c:3113 slab_alloc_node mm/slub.c:3204 [inline] slab_alloc mm/slub.c:3246 [inline] kmem_cache_alloc+0x459/0x4a0 mm/slub.c:3251 vm_area_dup+0x86/0x3e0 kernel/fork.c:367 __split_vma+0x8d/0x470 mm/mmap.c:2749 split_vma+0x72/0xd0 mm/mmap.c:2808 mprotect_fixup+0x5b7/0x770 mm/mprotect.c:483 do_mprotect_pkey+0x414/0x860 mm/mprotect.c:636 __do_sys_mprotect mm/mprotect.c:662 [inline] __se_sys_mprotect mm/mprotect.c:659 [inline] __x64_sys_mprotect+0x73/0xb0 mm/mprotect.c:659 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x61/0xcb page last free stack trace: reset_page_owner include/linux/page_owner.h:26 [inline] free_pages_prepare mm/page_alloc.c:1466 [inline] free_pcp_prepare+0x1e3/0x4d0 mm/page_alloc.c:1538 free_unref_page_prepare mm/page_alloc.c:3502 [inline] free_unref_page_list+0x1e3/0xd10 mm/page_alloc.c:3633 release_pages+0x389/0x1000 mm/swap.c:1009 free_pages_and_swap_cache+0x5d/0x80 mm/swap_state.c:320 tlb_batch_pages_flush mm/mmu_gather.c:49 [inline] tlb_flush_mmu_free mm/mmu_gather.c:240 [inline] tlb_flush_mmu mm/mmu_gather.c:247 [inline] tlb_finish_mmu+0x129/0x790 mm/mmu_gather.c:338 exit_mmap+0x21a/0x710 mm/mmap.c:3211 __mmput+0x70/0x3a0 kernel/fork.c:1171 mmput kernel/fork.c:1194 [inline] mmput+0x35/0xf0 kernel/fork.c:1188 exit_mm kernel/exit.c:551 [inline] do_exit+0x87d/0x2410 kernel/exit.c:862 do_group_exit+0xe6/0x290 kernel/exit.c:997 __do_sys_exit_group kernel/exit.c:1008 [inline] __se_sys_exit_group kernel/exit.c:1006 [inline] __x64_sys_exit_group+0x3e/0x50 kernel/exit.c:1006 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x61/0xcb Memory state around the buggy address: ffff88810c050a80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ffff88810c050b00: 00 00 00 00 00 00 00 00 00 00 fc fc fc fc fc fc >ffff88810c050b80: fc fc 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ^ ffff88810c050c00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 fc ffff88810c050c80: fc fc fc fc fc fc fc fa fb fb fb fb fb fb fb fb ================================================================== ---------------- Code disassembly (best guess): 0: 28 00 sub %al,(%rax) 2: 00 00 add %al,(%rax) 4: 75 05 jne 0xb 6: 48 83 c4 28 add $0x28,%rsp a: c3 retq b: e8 f1 19 00 00 callq 0x1a01 10: 90 nop 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 retq 33: 48 c7 c1 b8 ff ff ff mov $0xffffffffffffffb8,%rcx 3a: f7 d8 neg %eax 3c: 64 89 01 mov %eax,%fs:(%rcx) 3f: 48 rex.W