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v13-20020a056a00148d00b0068a613ea360mr2849192pfu.0.1694349443958; Sun, 10 Sep 2023 05:37:23 -0700 (PDT) Date: Sun, 10 Sep 2023 05:37:23 -0700 In-Reply-To: <20230910114742.6409-1-hdanton@sina.com> X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <000000000000bb8e7b06050078ee@google.com> Subject: Re: [syzbot] [mm?] BUG: Bad page map (7) From: syzbot To: hdanton@sina.com, linux-kernel@vger.kernel.org, syzkaller-bugs@googlegroups.com Content-Type: text/plain; charset="UTF-8" Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hello, syzbot has tested the proposed patch but the reproducer is still triggering an issue: BUG: Bad page map BUG: Bad page map in process syz-executor.0 pte:fffff9a4fc120 pmd:27564067 page:ffffea000196c0c0 refcount:9 mapcount:-1 mapping:ffff888076fc0410 index:0x3 pfn:0x65b03 head:ffffea000196c000 order:2 entire_mapcount:0 nr_pages_mapped:8388607 pincount:0 memcg:ffff888021424000 aops:xfs_address_space_operations ino:244a dentry name:"bus" flags: 0xfff0000000816c(referenced|uptodate|lru|active|private|head|node=0|zone=1|lastcpupid=0x7ff) page_type: 0xffffffff() raw: 00fff00000000000 ffffea000196c001 dead000000000122 dead000000000400 raw: 0000000000000001 0000000000000000 00000000fffffffe 0000000000000000 head: 00fff0000000816c ffffea0001a0bbc8 ffff88802087a030 ffff888076fc0410 head: 0000000000000000 ffff88801c0ae900 00000009ffffffff ffff888021424000 page dumped because: bad pte page_owner tracks the page as allocated page last allocated via order 2, migratetype Movable, gfp_mask 0x152c4a(GFP_NOFS|__GFP_HIGHMEM|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_HARDWALL|__GFP_MOVABLE), pid 5455, tgid 5454 (syz-executor.0), ts 80410050199, free_ts 55464708323 set_page_owner include/linux/page_owner.h:31 [inline] post_alloc_hook+0x1e6/0x210 mm/page_alloc.c:1536 prep_new_page mm/page_alloc.c:1543 [inline] get_page_from_freelist+0x31db/0x3360 mm/page_alloc.c:3170 __alloc_pages+0x255/0x670 mm/page_alloc.c:4426 folio_alloc+0x1e/0x60 mm/mempolicy.c:2308 filemap_alloc_folio+0xde/0x500 mm/filemap.c:976 ra_alloc_folio mm/readahead.c:468 [inline] page_cache_ra_order+0x423/0xcc0 mm/readahead.c:524 do_sync_mmap_readahead+0x444/0x850 filemap_fault+0x7d3/0x1710 mm/filemap.c:3291 __xfs_filemap_fault+0x286/0x960 fs/xfs/xfs_file.c:1354 __do_fault+0x133/0x4e0 mm/memory.c:4204 do_read_fault mm/memory.c:4568 [inline] do_fault mm/memory.c:4705 [inline] do_pte_missing mm/memory.c:3669 [inline] handle_pte_fault mm/memory.c:4978 [inline] __handle_mm_fault mm/memory.c:5119 [inline] handle_mm_fault+0x48d2/0x6200 mm/memory.c:5284 faultin_page mm/gup.c:956 [inline] __get_user_pages+0x6bd/0x15e0 mm/gup.c:1239 __get_user_pages_locked mm/gup.c:1504 [inline] get_dump_page+0x146/0x2b0 mm/gup.c:2018 dump_user_range+0x126/0x910 fs/coredump.c:913 elf_core_dump+0x3b75/0x4490 fs/binfmt_elf.c:2142 do_coredump+0x1b73/0x2ab0 fs/coredump.c:764 page last free stack trace: reset_page_owner include/linux/page_owner.h:24 [inline] free_pages_prepare mm/page_alloc.c:1136 [inline] free_unref_page_prepare+0x8c3/0x9f0 mm/page_alloc.c:2312 free_unref_page+0x37/0x3f0 mm/page_alloc.c:2405 release_pages+0x642/0x23f0 mm/swap.c:1008 tlb_batch_pages_flush mm/mmu_gather.c:98 [inline] tlb_flush_mmu_free mm/mmu_gather.c:293 [inline] tlb_flush_mmu+0x34c/0x4e0 mm/mmu_gather.c:300 tlb_finish_mmu+0xd4/0x1f0 mm/mmu_gather.c:392 zap_page_range_single+0x451/0x510 mm/memory.c:1768 madvise_dontneed_single_vma mm/madvise.c:825 [inline] madvise_dontneed_free mm/madvise.c:906 [inline] madvise_vma_behavior mm/madvise.c:1045 [inline] madvise_walk_vmas mm/madvise.c:1270 [inline] do_madvise+0x23f0/0x45d0 mm/madvise.c:1450 __do_sys_madvise mm/madvise.c:1463 [inline] __se_sys_madvise mm/madvise.c:1461 [inline] __x64_sys_madvise+0xa5/0xb0 mm/madvise.c:1461 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd addr:0000000020006000 vm_flags:080000d0 anon_vma:0000000000000000 mapping:ffff888076fc0410 index:5 file:bus fault:xfs_filemap_fault mmap:xfs_file_mmap read_folio:xfs_vm_read_folio CPU: 1 PID: 5455 Comm: syz-executor.0 Not tainted 6.5.0-syzkaller-13150-g535a265d7f0d-dirty #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/04/2023 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x1e7/0x2d0 lib/dump_stack.c:106 print_bad_pte+0x581/0x5c0 mm/memory.c:535 zap_pte_range mm/memory.c:1458 [inline] zap_pmd_range mm/memory.c:1573 [inline] zap_pud_range mm/memory.c:1602 [inline] zap_p4d_range mm/memory.c:1623 [inline] unmap_page_range+0x1a76/0x3300 mm/memory.c:1644 unmap_vmas+0x209/0x3a0 mm/memory.c:1731 exit_mmap+0x297/0xc50 mm/mmap.c:3210 __mmput+0x115/0x3c0 kernel/fork.c:1349 exit_mm+0x21f/0x300 kernel/exit.c:567 do_exit+0x612/0x2290 kernel/exit.c:861 do_group_exit+0x206/0x2c0 kernel/exit.c:1024 get_signal+0x175d/0x1840 kernel/signal.c:2892 arch_do_signal_or_restart+0x96/0x860 arch/x86/kernel/signal.c:309 exit_to_user_mode_loop+0x6a/0x100 kernel/entry/common.c:168 exit_to_user_mode_prepare+0xb1/0x140 kernel/entry/common.c:204 __syscall_exit_to_user_mode_work kernel/entry/common.c:285 [inline] syscall_exit_to_user_mode+0x64/0x280 kernel/entry/common.c:296 do_syscall_64+0x4d/0xc0 arch/x86/entry/common.c:86 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7f6cb8c7cae9 Code: Unable to access opcode bytes at 0x7f6cb8c7cabf. RSP: 002b:00007f6cb9a470c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000148 RAX: ffffffffffffffe5 RBX: 00007f6cb8d9bf80 RCX: 00007f6cb8c7cae9 RDX: 0000000000000002 RSI: 0000000020000300 RDI: 0000000000000007 RBP: 00007f6cb8cc847a R08: 0000000000000000 R09: 0000000000000000 R10: 0000000008800000 R11: 0000000000000246 R12: 0000000000000000 R13: 000000000000000b R14: 00007f6cb8d9bf80 R15: 00007ffdc7779988 BUG: Bad page map in process syz-executor.0 pte:fffff9a4fd120 pmd:27564067 page:ffffea000196c080 refcount:9 mapcount:-1 mapping:ffff888076fc0410 index:0x2 pfn:0x65b02 head:ffffea000196c000 order:2 entire_mapcount:0 nr_pages_mapped:8388606 pincount:0 memcg:ffff888021424000 aops:xfs_address_space_operations ino:244a dentry name:"bus" flags: 0xfff0000000816c(referenced|uptodate|lru|active|private|head|node=0|zone=1|lastcpupid=0x7ff) page_type: 0xffffffff() raw: 00fff00000000000 ffffea000196c001 ffffea000196c090 ffffea000196c090 raw: 0000000000000001 0000000000000000 00000000fffffffe 0000000000000000 head: 00fff0000000816c ffffea0001a0bbc8 ffff88802087a030 ffff888076fc0410 head: 0000000000000000 ffff88801c0ae900 00000009ffffffff ffff888021424000 page dumped because: bad pte page_owner tracks the page as allocated page last allocated via order 2, migratetype Movable, gfp_mask 0x152c4a(GFP_NOFS|__GFP_HIGHMEM|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_HARDWALL|__GFP_MOVABLE), pid 5455, tgid 5454 (syz-executor.0), ts 80410050199, free_ts 55464708323 set_page_owner include/linux/page_owner.h:31 [inline] post_alloc_hook+0x1e6/0x210 mm/page_alloc.c:1536 prep_new_page mm/page_alloc.c:1543 [inline] get_page_from_freelist+0x31db/0x3360 mm/page_alloc.c:3170 __alloc_pages+0x255/0x670 mm/page_alloc.c:4426 folio_alloc+0x1e/0x60 mm/mempolicy.c:2308 filemap_alloc_folio+0xde/0x500 mm/filemap.c:976 ra_alloc_folio mm/readahead.c:468 [inline] page_cache_ra_order+0x423/0xcc0 mm/readahead.c:524 do_sync_mmap_readahead+0x444/0x850 filemap_fault+0x7d3/0x1710 mm/filemap.c:3291 __xfs_filemap_fault+0x286/0x960 fs/xfs/xfs_file.c:1354 __do_fault+0x133/0x4e0 mm/memory.c:4204 do_read_fault mm/memory.c:4568 [inline] do_fault mm/memory.c:4705 [inline] do_pte_missing mm/memory.c:3669 [inline] handle_pte_fault mm/memory.c:4978 [inline] __handle_mm_fault mm/memory.c:5119 [inline] handle_mm_fault+0x48d2/0x6200 mm/memory.c:5284 faultin_page mm/gup.c:956 [inline] __get_user_pages+0x6bd/0x15e0 mm/gup.c:1239 __get_user_pages_locked mm/gup.c:1504 [inline] get_dump_page+0x146/0x2b0 mm/gup.c:2018 dump_user_range+0x126/0x910 fs/coredump.c:913 elf_core_dump+0x3b75/0x4490 fs/binfmt_elf.c:2142 do_coredump+0x1b73/0x2ab0 fs/coredump.c:764 page last free stack trace: reset_page_owner include/linux/page_owner.h:24 [inline] free_pages_prepare mm/page_alloc.c:1136 [inline] free_unref_page_prepare+0x8c3/0x9f0 mm/page_alloc.c:2312 free_unref_page+0x37/0x3f0 mm/page_alloc.c:2405 release_pages+0x642/0x23f0 mm/swap.c:1008 tlb_batch_pages_flush mm/mmu_gather.c:98 [inline] tlb_flush_mmu_free mm/mmu_gather.c:293 [inline] tlb_flush_mmu+0x34c/0x4e0 mm/mmu_gather.c:300 tlb_finish_mmu+0xd4/0x1f0 mm/mmu_gather.c:392 zap_page_range_single+0x451/0x510 mm/memory.c:1768 madvise_dontneed_single_vma mm/madvise.c:825 [inline] madvise_dontneed_free mm/madvise.c:906 [inline] madvise_vma_behavior mm/madvise.c:1045 [inline] madvise_walk_vmas mm/madvise.c:1270 [inline] do_madvise+0x23f0/0x45d0 mm/madvise.c:1450 __do_sys_madvise mm/madvise.c:1463 [inline] __se_sys_madvise mm/madvise.c:1461 [inline] __x64_sys_madvise+0xa5/0xb0 mm/madvise.c:1461 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd addr:0000000020007000 vm_flags:080000d0 anon_vma:0000000000000000 mapping:ffff888076fc0410 index:6 file:bus fault:xfs_filemap_fault mmap:xfs_file_mmap read_folio:xfs_vm_read_folio CPU: 0 PID: 5455 Comm: syz-executor.0 Tainted: G B 6.5.0-syzkaller-13150-g535a265d7f0d-dirty #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/04/2023 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x1e7/0x2d0 lib/dump_stack.c:106 print_bad_pte+0x581/0x5c0 mm/memory.c:535 zap_pte_range mm/memory.c:1458 [inline] zap_pmd_range mm/memory.c:1573 [inline] zap_pud_range mm/memory.c:1602 [inline] zap_p4d_range mm/memory.c:1623 [inline] unmap_page_range+0x1a76/0x3300 mm/memory.c:1644 unmap_vmas+0x209/0x3a0 mm/memory.c:1731 exit_mmap+0x297/0xc50 mm/mmap.c:3210 __mmput+0x115/0x3c0 kernel/fork.c:1349 exit_mm+0x21f/0x300 kernel/exit.c:567 do_exit+0x612/0x2290 kernel/exit.c:861 do_group_exit+0x206/0x2c0 kernel/exit.c:1024 get_signal+0x175d/0x1840 kernel/signal.c:2892 arch_do_signal_or_restart+0x96/0x860 arch/x86/kernel/signal.c:309 exit_to_user_mode_loop+0x6a/0x100 kernel/entry/common.c:168 exit_to_user_mode_prepare+0xb1/0x140 kernel/entry/common.c:204 __syscall_exit_to_user_mode_work kernel/entry/common.c:285 [inline] syscall_exit_to_user_mode+0x64/0x280 kernel/entry/common.c:296 do_syscall_64+0x4d/0xc0 arch/x86/entry/common.c:86 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7f6cb8c7cae9 Code: Unable to access opcode bytes at 0x7f6cb8c7cabf. RSP: 002b:00007f6cb9a470c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000148 RAX: ffffffffffffffe5 RBX: 00007f6cb8d9bf80 RCX: 00007f6cb8c7cae9 RDX: 0000000000000002 RSI: 0000000020000300 RDI: 0000000000000007 RBP: 00007f6cb8cc847a R08: 0000000000000000 R09: 0000000000000000 R10: 0000000008800000 R11: 0000000000000246 R12: 0000000000000000 R13: 000000000000000b R14: 00007f6cb8d9bf80 R15: 00007ffdc7779988 BUG: Bad page map in process syz-executor.0 pte:fffff9a4fe120 pmd:27564067 page:ffffea000196c040 refcount:9 mapcount:-1 mapping:ffff888076fc0410 index:0x1 pfn:0x65b01 head:ffffea000196c000 order:2 entire_mapcount:0 nr_pages_mapped:8388605 pincount:0 memcg:ffff888021424000 aops:xfs_address_space_operations ino:244a dentry name:"bus" flags: 0xfff0000000816c(referenced|uptodate|lru|active|private|head|node=0|zone=1|lastcpupid=0x7ff) page_type: 0xffffffff() raw: 00fff00000000202 ffffea000196c001 dead000000000122 fffffffdffffffff raw: 0000000400000000 0000000000000000 00000000fffffffe 0000000000000000 head: 00fff0000000816c ffffea0001a0bbc8 ffff88802087a030 ffff888076fc0410 head: 0000000000000000 ffff88801c0ae900 00000009ffffffff ffff888021424000 page dumped because: bad pte page_owner tracks the page as allocated page last allocated via order 2, migratetype Movable, gfp_mask 0x152c4a(GFP_NOFS|__GFP_HIGHMEM|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_HARDWALL|__GFP_MOVABLE), pid 5455, tgid 5454 (syz-executor.0), ts 80410050199, free_ts 55464708323 set_page_owner include/linux/page_owner.h:31 [inline] post_alloc_hook+0x1e6/0x210 mm/page_alloc.c:1536 prep_new_page mm/page_alloc.c:1543 [inline] get_page_from_freelist+0x31db/0x3360 mm/page_alloc.c:3170 __alloc_pages+0x255/0x670 mm/page_alloc.c:4426 folio_alloc+0x1e/0x60 mm/mempolicy.c:2308 filemap_alloc_folio+0xde/0x500 mm/filemap.c:976 ra_alloc_folio mm/readahead.c:468 [inline] page_cache_ra_order+0x423/0xcc0 mm/readahead.c:524 do_sync_mmap_readahead+0x444/0x850 filemap_fault+0x7d3/0x1710 mm/filemap.c:3291 __xfs_filemap_fault+0x286/0x960 fs/xfs/xfs_file.c:1354 __do_fault+0x133/0x4e0 mm/memory.c:4204 do_read_fault mm/memory.c:4568 [inline] do_fault mm/memory.c:4705 [inline] do_pte_missing mm/memory.c:3669 [inline] handle_pte_fault mm/memory.c:4978 [inline] __handle_mm_fault mm/memory.c:5119 [inline] handle_mm_fault+0x48d2/0x6200 mm/memory.c:5284 faultin_page mm/gup.c:956 [inline] __get_user_pages+0x6bd/0x15e0 mm/gup.c:1239 __get_user_pages_locked mm/gup.c:1504 [inline] get_dump_page+0x146/0x2b0 mm/gup.c:2018 dump_user_range+0x126/0x910 fs/coredump.c:913 elf_core_dump+0x3b75/0x4490 fs/binfmt_elf.c:2142 do_coredump+0x1b73/0x2ab0 fs/coredump.c:764 page last free stack trace: reset_page_owner include/linux/page_owner.h:24 [inline] free_pages_prepare mm/page_alloc.c:1136 [inline] free_unref_page_prepare+0x8c3/0x9f0 mm/page_alloc.c:2312 free_unref_page+0x37/0x3f0 mm/page_alloc.c:2405 release_pages+0x642/0x23f0 mm/swap.c:1008 tlb_batch_pages_flush mm/mmu_gather.c:98 [inline] tlb_flush_mmu_free mm/mmu_gather.c:293 [inline] tlb_flush_mmu+0x34c/0x4e0 mm/mmu_gather.c:300 tlb_finish_mmu+0xd4/0x1f0 mm/mmu_gather.c:392 zap_page_range_single+0x451/0x510 mm/memory.c:1768 madvise_dontneed_single_vma mm/madvise.c:825 [inline] madvise_dontneed_free mm/madvise.c:906 [inline] madvise_vma_behavior mm/madvise.c:1045 [inline] madvise_walk_vmas mm/madvise.c:1270 [inline] do_madvise+0x23f0/0x45d0 mm/madvise.c:1450 __do_sys_madvise mm/madvise.c:1463 [inline] __se_sys_madvise mm/madvise.c:1461 [inline] __x64_sys_madvise+0xa5/0xb0 mm/madvise.c:1461 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd addr:0000000020008000 vm_flags:080000d0 anon_vma:0000000000000000 mapping:ffff888076fc0410 index:7 file:bus fault:xfs_filemap_fault mmap:xfs_file_mmap read_folio:xfs_vm_read_folio CPU: 1 PID: 5455 Comm: syz-executor.0 Tainted: G B 6.5.0-syzkaller-13150-g535a265d7f0d-dirty #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/04/2023 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x1e7/0x2d0 lib/dump_stack.c:106 print_bad_pte+0x581/0x5c0 mm/memory.c:535 zap_pte_range mm/memory.c:1458 [inline] zap_pmd_range mm/memory.c:1573 [inline] zap_pud_range mm/memory.c:1602 [inline] zap_p4d_range mm/memory.c:1623 [inline] unmap_page_range+0x1a76/0x3300 mm/memory.c:1644 unmap_vmas+0x209/0x3a0 mm/memory.c:1731 exit_mmap+0x297/0xc50 mm/mmap.c:3210 __mmput+0x115/0x3c0 kernel/fork.c:1349 exit_mm+0x21f/0x300 kernel/exit.c:567 do_exit+0x612/0x2290 kernel/exit.c:861 do_group_exit+0x206/0x2c0 kernel/exit.c:1024 get_signal+0x175d/0x1840 kernel/signal.c:2892 arch_do_signal_or_restart+0x96/0x860 arch/x86/kernel/signal.c:309 exit_to_user_mode_loop+0x6a/0x100 kernel/entry/common.c:168 exit_to_user_mode_prepare+0xb1/0x140 kernel/entry/common.c:204 __syscall_exit_to_user_mode_work kernel/entry/common.c:285 [inline] syscall_exit_to_user_mode+0x64/0x280 kernel/entry/common.c:296 do_syscall_64+0x4d/0xc0 arch/x86/entry/common.c:86 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7f6cb8c7cae9 Code: Unable to access opcode bytes at 0x7f6cb8c7cabf. RSP: 002b:00007f6cb9a470c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000148 RAX: ffffffffffffffe5 RBX: 00007f6cb8d9bf80 RCX: 00007f6cb8c7cae9 RDX: 0000000000000002 RSI: 0000000020000300 RDI: 0000000000000007 RBP: 00007f6cb8cc847a R08: 0000000000000000 R09: 0000000000000000 R10: 0000000008800000 R11: 0000000000000246 R12: 0000000000000000 R13: 000000000000000b R14: 00007f6cb8d9bf80 R15: 00007ffdc7779988 Tested on: commit: 535a265d Merge tag 'perf-tools-for-v6.6-1-2023-09-05' .. git tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master console output: https://syzkaller.appspot.com/x/log.txt?x=10d27178680000 kernel config: https://syzkaller.appspot.com/x/.config?x=50ac7dadde9e1c0e dashboard link: https://syzkaller.appspot.com/bug?extid=55cc72f8cc3a549119df compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 patch: https://syzkaller.appspot.com/x/patch.diff?x=15b641dc680000