ci2 starts bisection 2023-06-06 23:15:43.704702372 +0000 UTC m=+440767.351610037 bisecting fixing commit since ca48fc16c49388400eddd6c6614593ebf7c7726a building syzkaller on 90c93c40627cb0ac3c2c7cb99d807fd4c137adcb ensuring issue is reproducible on original commit ca48fc16c49388400eddd6c6614593ebf7c7726a testing commit ca48fc16c49388400eddd6c6614593ebf7c7726a gcc compiler: Debian clang version 15.0.7, GNU ld (GNU Binutils for Debian) 2.35.2 kernel signature: 1e4e26782e2d4a2f9ca8e6f8f36ff77dcb6ab435e1d62ebd2d9de3047091f4d1 run #0: crashed: KASAN: use-after-free Read in reiserfs_readdir_inode run #1: crashed: KASAN: use-after-free Read in reiserfs_readdir_inode run #2: crashed: KASAN: use-after-free Read in reiserfs_readdir_inode run #3: crashed: KASAN: use-after-free Read in reiserfs_readdir_inode run #4: crashed: KASAN: use-after-free Read in reiserfs_readdir_inode run #5: crashed: KASAN: out-of-bounds Read in reiserfs_readdir_inode run #6: crashed: KASAN: use-after-free Read in reiserfs_readdir_inode run #7: crashed: KASAN: use-after-free Read in reiserfs_readdir_inode run #8: crashed: KASAN: use-after-free Read in reiserfs_readdir_inode run #9: crashed: KASAN: use-after-free Read in reiserfs_readdir_inode run #10: crashed: KASAN: out-of-bounds Read in reiserfs_readdir_inode run #11: crashed: KASAN: use-after-free Read in reiserfs_readdir_inode run #12: crashed: KASAN: use-after-free Read in reiserfs_readdir_inode run #13: crashed: KASAN: use-after-free Read in reiserfs_readdir_inode run #14: crashed: KASAN: use-after-free Read in reiserfs_readdir_inode run #15: crashed: KASAN: out-of-bounds Read in reiserfs_readdir_inode run #16: crashed: KASAN: use-after-free Read in reiserfs_readdir_inode run #17: crashed: KASAN: use-after-free Read in reiserfs_readdir_inode run #18: crashed: KASAN: use-after-free Read in reiserfs_readdir_inode run #19: crashed: KASAN: use-after-free Read in reiserfs_readdir_inode testing current HEAD 76ba310227d2490018c271f1ecabb6c0a3212eb0 testing commit 76ba310227d2490018c271f1ecabb6c0a3212eb0 gcc compiler: Debian clang version 15.0.7, GNU ld (GNU Binutils for Debian) 2.35.2 kernel signature: bd1c3834dc1cc32033d1771b9d810d35966dfbf3cf3b630c189062f08d6dc7ae run #0: crashed: KASAN: use-after-free Read in reiserfs_readdir_inode run #1: crashed: KASAN: out-of-bounds Read in reiserfs_readdir_inode run #2: crashed: KASAN: out-of-bounds Read in reiserfs_readdir_inode run #3: crashed: KASAN: use-after-free Read in reiserfs_readdir_inode run #4: crashed: KASAN: use-after-free Read in reiserfs_readdir_inode run #5: crashed: KASAN: use-after-free Read in reiserfs_readdir_inode run #6: crashed: KASAN: out-of-bounds Read in reiserfs_readdir_inode run #7: crashed: KASAN: use-after-free Read in reiserfs_readdir_inode run #8: crashed: KASAN: use-after-free Read in reiserfs_readdir_inode run #9: crashed: KASAN: use-after-free Read in reiserfs_readdir_inode crash still not fixed/happens on the oldest tested release revisions tested: 2, total time: 48m12.282679259s (build: 26m20.664270408s, test: 6m33.699505032s) crash still not fixed on HEAD or HEAD had kernel test errors commit msg: Linux 6.1.32 crash: KASAN: use-after-free Read in reiserfs_readdir_inode REISERFS (device loop0): journal params: device loop0, size 512, journal first block 18, max trans len 256, max batch 225, max commit age 30, max trans age 30 REISERFS (device loop0): checking transaction log (loop0) REISERFS (device loop0): Using r5 hash to sort names ================================================================== BUG: KASAN: use-after-free in instrument_atomic_read include/linux/instrumented.h:72 [inline] BUG: KASAN: use-after-free in _test_bit include/asm-generic/bitops/instrumented-non-atomic.h:141 [inline] BUG: KASAN: use-after-free in test_bit_le include/asm-generic/bitops/le.h:21 [inline] BUG: KASAN: use-after-free in reiserfs_readdir_inode+0x5a0/0x1490 fs/reiserfs/dir.c:147 Read of size 8 at addr ffff88806a54c000 by task syz-executor.0/3974 CPU: 1 PID: 3974 Comm: syz-executor.0 Not tainted 6.1.32-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/25/2023 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x163/0x213 lib/dump_stack.c:106 print_address_description mm/kasan/report.c:284 [inline] print_report+0x15f/0x4f0 mm/kasan/report.c:395 kasan_report+0x136/0x160 mm/kasan/report.c:495 kasan_check_range+0x27f/0x290 mm/kasan/generic.c:189 instrument_atomic_read include/linux/instrumented.h:72 [inline] _test_bit include/asm-generic/bitops/instrumented-non-atomic.h:141 [inline] test_bit_le include/asm-generic/bitops/le.h:21 [inline] reiserfs_readdir_inode+0x5a0/0x1490 fs/reiserfs/dir.c:147 iterate_dir+0x1fa/0x4f0 __do_sys_getdents64 fs/readdir.c:369 [inline] __se_sys_getdents64+0x1b3/0x3e0 fs/readdir.c:354 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7f517ec8c169 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:00007f517f9a4168 EFLAGS: 00000246 ORIG_RAX: 00000000000000d9 RAX: ffffffffffffffda RBX: 00007f517edabf80 RCX: 00007f517ec8c169 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000004 RBP: 00007f517ece7ca1 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fff9f8ee3ef R14: 00007f517f9a4300 R15: 0000000000022000 The buggy address belongs to the physical page: page:ffffea0001a95300 refcount:0 mapcount:0 mapping:0000000000000000 index:0x1 pfn:0x6a54c flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff) raw: 00fff00000000000 ffffea0001a95348 ffff8880b9d405a0 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 0x140cca(GFP_HIGHUSER_MOVABLE|__GFP_COMP), pid 3889, tgid 3889 (udevd), ts 68239148406, free_ts 68240929759 set_page_owner include/linux/page_owner.h:31 [inline] post_alloc_hook+0x18d/0x1b0 mm/page_alloc.c:2533 prep_new_page mm/page_alloc.c:2540 [inline] get_page_from_freelist+0x32ed/0x3480 mm/page_alloc.c:4292 __alloc_pages+0x28d/0x770 mm/page_alloc.c:5559 __folio_alloc+0xf/0x30 mm/page_alloc.c:5591 vma_alloc_folio+0x304/0x680 mm/mempolicy.c:2241 shmem_alloc_folio mm/shmem.c:1570 [inline] shmem_alloc_and_acct_folio+0x3ea/0x9d0 mm/shmem.c:1594 shmem_get_folio_gfp+0x11c4/0x2740 mm/shmem.c:1922 shmem_get_folio mm/shmem.c:2053 [inline] shmem_write_begin+0x15b/0x400 mm/shmem.c:2540 generic_perform_write+0x2f1/0x540 mm/filemap.c:3754 __generic_file_write_iter+0x13f/0x340 mm/filemap.c:3882 generic_file_write_iter+0x99/0x230 mm/filemap.c:3914 call_write_iter include/linux/fs.h:2205 [inline] new_sync_write fs/read_write.c:491 [inline] vfs_write+0x7eb/0xac0 fs/read_write.c:584 ksys_write+0x15f/0x240 fs/read_write.c:637 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd page last free stack trace: reset_page_owner include/linux/page_owner.h:24 [inline] free_pages_prepare mm/page_alloc.c:1460 [inline] free_pcp_prepare mm/page_alloc.c:1510 [inline] free_unref_page_prepare+0xf63/0x1120 mm/page_alloc.c:3388 free_unref_page_list+0x107/0x810 mm/page_alloc.c:3530 release_pages+0x1f1b/0x20f0 mm/swap.c:1055 __pagevec_release+0x62/0xd0 mm/swap.c:1075 pagevec_release include/linux/pagevec.h:71 [inline] folio_batch_release include/linux/pagevec.h:135 [inline] shmem_undo_range+0x6f4/0x1940 mm/shmem.c:944 shmem_truncate_range mm/shmem.c:1043 [inline] shmem_evict_inode+0x37b/0x8a0 mm/shmem.c:1152 evict+0x262/0x550 fs/inode.c:664 __dentry_kill+0x38b/0x560 fs/dcache.c:607 dentry_kill+0xbb/0x1e0 dput+0x165/0x300 fs/dcache.c:913 do_renameat2+0x9ce/0x1140 fs/namei.c:4932 __do_sys_rename fs/namei.c:4976 [inline] __se_sys_rename fs/namei.c:4974 [inline] __x64_sys_rename+0x7d/0x90 fs/namei.c:4974 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd Memory state around the buggy address: ffff88806a54bf00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ffff88806a54bf80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 >ffff88806a54c000: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ^ ffff88806a54c080: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ffff88806a54c100: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ==================================================================