ci2 starts bisection 2023-05-26 16:34:00.857508907 +0000 UTC m=+42764.496102322 bisecting fixing commit since 38e04b3e4240a6d8fb43129ebad41608db64bc6f building syzkaller on 7939252e4ddf50bbb9912069a40d32f6c83c4f8e ensuring issue is reproducible on original commit 38e04b3e4240a6d8fb43129ebad41608db64bc6f testing commit 38e04b3e4240a6d8fb43129ebad41608db64bc6f gcc compiler: Debian clang version 15.0.7, GNU ld (GNU Binutils for Debian) 2.35.2 kernel signature: 58cfed0a2371bd0acc89521a5fac748de0c91882a83731bf3d5db3b3b716b6b1 run #0: crashed: KASAN: use-after-free Read in ntfs_read_folio run #1: crashed: KASAN: use-after-free Read in ntfs_read_folio run #2: crashed: KASAN: use-after-free Read in ntfs_read_folio run #3: crashed: KASAN: out-of-bounds Read in ntfs_read_folio run #4: crashed: KASAN: use-after-free Read in ntfs_read_folio run #5: crashed: KASAN: use-after-free Read in ntfs_read_folio run #6: crashed: KASAN: use-after-free Read in ntfs_read_folio run #7: crashed: KASAN: use-after-free Read in ntfs_read_folio run #8: crashed: KASAN: use-after-free Read in ntfs_read_folio run #9: crashed: KASAN: use-after-free Read in ntfs_read_folio run #10: crashed: KASAN: use-after-free Read in ntfs_read_folio run #11: crashed: KASAN: use-after-free Read in ntfs_read_folio run #12: crashed: KASAN: use-after-free Read in ntfs_read_folio run #13: crashed: KASAN: use-after-free Read in ntfs_read_folio run #14: crashed: KASAN: use-after-free Read in ntfs_read_folio run #15: crashed: KASAN: use-after-free Read in ntfs_read_folio run #16: crashed: KASAN: use-after-free Read in ntfs_read_folio run #17: crashed: KASAN: use-after-free Read in ntfs_read_folio run #18: crashed: KASAN: use-after-free Read in ntfs_read_folio run #19: crashed: KASAN: use-after-free Read in ntfs_read_folio testing current HEAD 0d85b27b0cc6b5cf54567c5ad913a247a71583ce testing commit 0d85b27b0cc6b5cf54567c5ad913a247a71583ce gcc compiler: Debian clang version 15.0.7, GNU ld (GNU Binutils for Debian) 2.35.2 kernel signature: 7e6f2b1f7ddea762da7e5adde76c4952f3882a882aaa3fb5d03125283ac163ae run #0: crashed: KASAN: use-after-free Read in ntfs_read_folio run #1: crashed: KASAN: use-after-free Read in ntfs_read_folio run #2: crashed: KASAN: use-after-free Read in ntfs_read_folio run #3: crashed: KASAN: use-after-free Read in ntfs_read_folio run #4: crashed: KASAN: use-after-free Read in ntfs_read_folio run #5: crashed: KASAN: use-after-free Read in ntfs_read_folio run #6: crashed: KASAN: use-after-free Read in ntfs_read_folio run #7: crashed: KASAN: use-after-free Read in ntfs_read_folio run #8: crashed: KASAN: use-after-free Read in ntfs_read_folio run #9: crashed: KASAN: out-of-bounds Read in ntfs_read_folio crash still not fixed/happens on the oldest tested release revisions tested: 2, total time: 49m8.970041231s (build: 42m2.880672457s, test: 6m28.282208525s) crash still not fixed on HEAD or HEAD had kernel test errors commit msg: Merge tag '6.4-rc3-smb3-client-fixes' of git://git.samba.org/sfrench/cifs-2.6 crash: KASAN: out-of-bounds Read in ntfs_read_folio loop0: detected capacity change from 0 to 190 ================================================================== BUG: KASAN: out-of-bounds in ntfs_read_folio+0x7d2/0x2040 fs/ntfs/aops.c:489 Read of size 1 at addr ffff888072cae17f by task syz-executor.0/5424 CPU: 0 PID: 5424 Comm: syz-executor.0 Not tainted 6.4.0-rc3-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/16/2023 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x167/0x220 lib/dump_stack.c:106 print_address_description mm/kasan/report.c:351 [inline] print_report+0x163/0x540 mm/kasan/report.c:462 kasan_report+0x176/0x1b0 mm/kasan/report.c:572 kasan_check_range+0x283/0x290 mm/kasan/generic.c:187 __asan_memcpy+0x29/0x70 mm/kasan/shadow.c:105 ntfs_read_folio+0x7d2/0x2040 fs/ntfs/aops.c:489 filemap_read_folio+0x14e/0x530 mm/filemap.c:2421 do_read_cache_folio+0x104/0x590 mm/filemap.c:3680 do_read_cache_page+0xf/0x160 mm/filemap.c:3746 read_mapping_page include/linux/pagemap.h:772 [inline] ntfs_map_page fs/ntfs/aops.h:75 [inline] load_and_init_attrdef fs/ntfs/super.c:1617 [inline] load_system_files+0x1df9/0x3ff0 fs/ntfs/super.c:1825 ntfs_fill_super+0x14e9/0x28c0 fs/ntfs/super.c:2900 mount_bdev+0x283/0x370 fs/super.c:1380 legacy_get_tree+0xe9/0x170 fs/fs_context.c:610 vfs_get_tree+0x7f/0x220 fs/super.c:1510 do_new_mount+0x1e5/0x930 fs/namespace.c:3039 do_mount fs/namespace.c:3382 [inline] __do_sys_mount fs/namespace.c:3591 [inline] __se_sys_mount+0x232/0x2c0 fs/namespace.c:3568 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 RIP: 0033:0x7f1bc208d62a Code: 48 c7 c2 b8 ff ff ff f7 d8 64 89 02 b8 ff ff ff ff eb d2 e8 b8 04 00 00 0f 1f 84 00 00 00 00 00 49 89 ca b8 a5 00 00 00 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:00007f1bc2e0ef88 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 000000000000097e RCX: 00007f1bc208d62a RDX: 0000000020000040 RSI: 000000002001f200 RDI: 00007f1bc2e0efe0 RBP: 00007f1bc2e0f020 R08: 00007f1bc2e0f020 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000020000040 R13: 000000002001f200 R14: 00007f1bc2e0efe0 R15: 0000000020000000 The buggy address belongs to the physical page: page:ffffea0001cb2b80 refcount:1 mapcount:1 mapping:0000000000000000 index:0x7fffffffb pfn:0x72cae memcg:ffff88814019c000 anon flags: 0xfff000000a0014(uptodate|lru|mappedtodisk|swapbacked|node=0|zone=1|lastcpupid=0x7ff) page_type: 0xffffffff() raw: 00fff00000000000 ffffea0001cb27c8 ffffea0001cb2548 0000000000000000 raw: 0000000000000001 0000000000000000 00000000ffffffff 0000000000000000 page dumped because: kasan: bad access detected page_owner tracks the page as freed page last allocated via order 0, migratetype Movable, gfp_mask 0x140dca(GFP_HIGHUSER_MOVABLE|__GFP_COMP|__GFP_ZERO), pid 5441, tgid 5441 (rm), ts 84070868639, free_ts 84093600800 prep_new_page mm/page_alloc.c:1738 [inline] get_page_from_freelist+0x321c/0x33a0 mm/page_alloc.c:3502 __alloc_pages+0x255/0x670 mm/page_alloc.c:4768 __folio_alloc+0x13/0x30 mm/page_alloc.c:4800 vma_alloc_folio+0x308/0x680 mm/mempolicy.c:2240 do_anonymous_page mm/memory.c:4085 [inline] do_pte_missing mm/memory.c:3645 [inline] handle_pte_fault mm/memory.c:4947 [inline] __handle_mm_fault mm/memory.c:5089 [inline] handle_mm_fault+0x27cd/0x41f0 mm/memory.c:5243 do_user_addr_fault arch/x86/mm/fault.c:1349 [inline] handle_page_fault arch/x86/mm/fault.c:1534 [inline] exc_page_fault+0x274/0x900 arch/x86/mm/fault.c:1590 asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:570 page last free stack trace: reset_page_owner include/linux/page_owner.h:24 [inline] free_pages_prepare mm/page_alloc.c:1302 [inline] free_unref_page_prepare+0x8fe/0xa10 mm/page_alloc.c:2564 free_unref_page_list+0x596/0x830 mm/page_alloc.c:2705 release_pages+0x1a0f/0x1bc0 mm/swap.c:1042 tlb_batch_pages_flush mm/mmu_gather.c:97 [inline] tlb_flush_mmu_free mm/mmu_gather.c:292 [inline] tlb_flush_mmu+0xe9/0x1e0 mm/mmu_gather.c:299 tlb_finish_mmu+0xb6/0x1c0 mm/mmu_gather.c:391 exit_mmap+0x351/0x890 mm/mmap.c:3123 __mmput+0xcb/0x300 kernel/fork.c:1351 exit_mm+0x1de/0x290 kernel/exit.c:564 do_exit+0x4f2/0x1d10 kernel/exit.c:858 do_group_exit+0x1b9/0x280 kernel/exit.c:1021 __do_sys_exit_group kernel/exit.c:1032 [inline] __se_sys_exit_group kernel/exit.c:1030 [inline] __x64_sys_exit_group+0x3f/0x40 kernel/exit.c:1030 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 Memory state around the buggy address: ffff888072cae080: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ffff888072cae100: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 >ffff888072cae180: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ^ ffff888072cae200: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ffff888072cae280: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ==================================================================