ci2 starts bisection 2023-04-18 00:34:27.935485205 +0000 UTC m=+16484.146307051 bisecting fixing commit since 534293368afa1a953c283310b82e4dc58309d51e building syzkaller on 7939252e4ddf50bbb9912069a40d32f6c83c4f8e ensuring issue is reproducible on original commit 534293368afa1a953c283310b82e4dc58309d51e testing commit 534293368afa1a953c283310b82e4dc58309d51e gcc compiler: Debian clang version 15.0.7, GNU ld (GNU Binutils for Debian) 2.35.2 kernel signature: a6223495c4016c8ebc7a75ae4f9db4a1dffd566e791041aa569861d859bec8f4 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: use-after-free 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: out-of-bounds Read in reiserfs_readdir_inode run #9: crashed: KASAN: use-after-free Read in reiserfs_readdir_inode run #10: crashed: KASAN: use-after-free 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: use-after-free 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 6a8f57ae2eb07ab39a6f0ccad60c760743051026 testing commit 6a8f57ae2eb07ab39a6f0ccad60c760743051026 gcc compiler: Debian clang version 15.0.7, GNU ld (GNU Binutils for Debian) 2.35.2 kernel signature: e332870b9d87963ba30744efb8b244a843083d1c0553a03f8228774f4b3d7c20 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: 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: out-of-bounds Read in reiserfs_readdir_inode run #9: crashed: KASAN: out-of-bounds Read in reiserfs_readdir_inode revisions tested: 2, total time: 50m59.340321787s (build: 42m34.163728376s, test: 6m28.399156926s) the crash still happens on HEAD commit msg: Linux 6.3-rc7 crash: KASAN: out-of-bounds 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: out-of-bounds in instrument_atomic_read include/linux/instrumented.h:72 [inline] BUG: KASAN: out-of-bounds in _test_bit include/asm-generic/bitops/instrumented-non-atomic.h:141 [inline] BUG: KASAN: out-of-bounds in test_bit_le include/asm-generic/bitops/le.h:21 [inline] BUG: KASAN: out-of-bounds in reiserfs_readdir_inode+0x5a4/0x1490 fs/reiserfs/dir.c:147 Read of size 8 at addr ffff88806e3bd000 by task syz-executor.0/5622 CPU: 0 PID: 5622 Comm: syz-executor.0 Not tainted 6.3.0-rc7-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/30/2023 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:319 [inline] print_report+0x163/0x540 mm/kasan/report.c:430 kasan_report+0x176/0x1b0 mm/kasan/report.c:536 kasan_check_range+0x283/0x290 mm/kasan/generic.c:187 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+0x5a4/0x1490 fs/reiserfs/dir.c:147 iterate_dir+0x1fe/0x500 __do_sys_getdents64 fs/readdir.c:369 [inline] __se_sys_getdents64+0x1b7/0x3f0 fs/readdir.c:354 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: 0033:0x7f8d7dc8c0f9 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:00007f8d7cffe168 EFLAGS: 00000246 ORIG_RAX: 00000000000000d9 RAX: ffffffffffffffda RBX: 00007f8d7ddabf80 RCX: 00007f8d7dc8c0f9 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000004 RBP: 00007f8d7dce7b39 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffe107c7d4f R14: 00007f8d7cffe300 R15: 0000000000022000 The buggy address belongs to the physical page: page:ffffea0001b8ef40 refcount:0 mapcount:0 mapping:0000000000000000 index:0x1 pfn:0x6e3bd flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff) raw: 00fff00000000000 ffffea0001b8f248 ffffea0001b8fac8 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 5635, tgid 5635 (dhcpcd-run-hook), ts 72213731095, free_ts 72215910595 prep_new_page mm/page_alloc.c:2553 [inline] get_page_from_freelist+0x3246/0x33c0 mm/page_alloc.c:4326 __alloc_pages+0x255/0x670 mm/page_alloc.c:5592 __folio_alloc+0x13/0x30 mm/page_alloc.c:5624 vma_alloc_folio+0x308/0x680 mm/mempolicy.c:2244 wp_page_copy mm/memory.c:3068 [inline] do_wp_page+0x8d1/0x25f0 mm/memory.c:3426 handle_pte_fault mm/memory.c:4941 [inline] __handle_mm_fault mm/memory.c:5065 [inline] handle_mm_fault+0x1fe0/0x3ce0 mm/memory.c:5211 do_user_addr_fault arch/x86/mm/fault.c:1407 [inline] handle_page_fault arch/x86/mm/fault.c:1498 [inline] exc_page_fault+0x5b1/0x7c0 arch/x86/mm/fault.c:1554 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:1454 [inline] free_pcp_prepare mm/page_alloc.c:1504 [inline] free_unref_page_prepare+0xe2f/0xe70 mm/page_alloc.c:3388 free_unref_page_list+0x596/0x830 mm/page_alloc.c:3529 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+0x358/0x7d0 mm/mmap.c:3043 __mmput+0xcb/0x300 kernel/fork.c:1207 exec_mmap+0x485/0x4d0 fs/exec.c:1034 begin_new_exec+0x5b3/0xe40 fs/exec.c:1293 load_elf_binary+0x81a/0x2410 fs/binfmt_elf.c:1001 search_binary_handler fs/exec.c:1736 [inline] exec_binprm fs/exec.c:1778 [inline] bprm_execve+0x8fb/0x1310 fs/exec.c:1853 do_execveat_common+0x45e/0x620 fs/exec.c:1960 do_execve fs/exec.c:2034 [inline] __do_sys_execve fs/exec.c:2110 [inline] __se_sys_execve fs/exec.c:2105 [inline] __x64_sys_execve+0x8d/0xa0 fs/exec.c:2105 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: ffff88806e3bcf00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ffff88806e3bcf80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 >ffff88806e3bd000: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ^ ffff88806e3bd080: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ffff88806e3bd100: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ==================================================================