Ó¢Œp[°ÉÙËÏqv=‹–Øφ!ZXóI¸4p_./ÕLù¬E6º¿öÛ}–7d&ÁØ¢ášW>—?¦Õ  " or missing value BUG: Bad page state in process syz-executor.3 pfn:5dcfc page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x1c pfn:0x5dcfc flags: 0x4fff8c00000820c(referenced|uptodate|workingset|private|node=1|zone=1|lastcpupid=0xfff) page_type: 0xffffffff() raw: 04fff8c00000820c dead000000000100 dead000000000122 0000000000000000 raw: 000000000000001c ffff88805da767c0 00000000ffffffff 0000000000000000 page dumped because: PAGE_FLAGS_CHECK_AT_FREE flag(s) set page_owner tracks the page as allocated page last allocated via order 0, migratetype Unmovable, gfp_mask 0x140c40(GFP_NOFS|__GFP_COMP|__GFP_HARDWALL), pid 5273, tgid 1791767381 (syz-executor.3), ts 5274, free_ts 0 set_page_owner include/linux/page_owner.h:32 [inline] post_alloc_hook+0x2d4/0x350 mm/page_alloc.c:1534 prep_new_page mm/page_alloc.c:1541 [inline] get_page_from_freelist+0xa28/0x3780 mm/page_alloc.c:3317 __alloc_pages+0x22b/0x2460 mm/page_alloc.c:4575 alloc_pages_mpol+0x275/0x610 mm/mempolicy.c:2264 folio_alloc+0x1e/0x40 mm/mempolicy.c:2342 filemap_alloc_folio+0x3ba/0x490 mm/filemap.c:984 do_read_cache_folio+0x1ba/0x550 mm/filemap.c:3711 do_read_cache_page mm/filemap.c:3813 [inline] read_cache_page+0x5b/0x160 mm/filemap.c:3822 read_mapping_page include/linux/pagemap.h:888 [inline] __get_metapage+0x997/0x1170 fs/jfs/jfs_metapage.c:620 diRead+0x650/0xb00 fs/jfs/jfs_imap.c:364 jfs_iget+0x88/0x4d0 fs/jfs/inode.c:35 jfs_fill_super+0x6c8/0xd20 fs/jfs/super.c:580 mount_bdev+0x1e3/0x2d0 fs/super.c:1658 legacy_get_tree+0x109/0x220 fs/fs_context.c:662 vfs_get_tree+0x8f/0x380 fs/super.c:1779 do_new_mount fs/namespace.c:3352 [inline] path_mount+0x6e1/0x1f10 fs/namespace.c:3679 page_owner free stack trace missing Modules linked in: CPU: 1 PID: 5274 Comm: syz-executor.3 Not tainted 6.9.0-rc5-syzkaller-00025-ga2c63a3f3d68 #0 Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x16c/0x1f0 lib/dump_stack.c:114 bad_page+0xb3/0x200 mm/page_alloc.c:515 free_page_is_bad_report mm/page_alloc.c:958 [inline] free_page_is_bad mm/page_alloc.c:968 [inline] free_pages_prepare mm/page_alloc.c:1133 [inline] free_unref_page_prepare+0x54d/0xb10 mm/page_alloc.c:2347 free_unref_folios+0x256/0xad0 mm/page_alloc.c:2536 folios_put_refs+0x49c/0x750 mm/swap.c:1034 folio_batch_release include/linux/pagevec.h:101 [inline] truncate_inode_pages_range+0x334/0xe90 mm/truncate.c:362 jfs_remount+0x4c1/0x650 fs/jfs/super.c:451 legacy_reconfigure+0x119/0x180 fs/fs_context.c:685 reconfigure_super+0x44f/0xb20 fs/super.c:1071 vfs_cmd_reconfigure fs/fsopen.c:267 [inline] vfs_fsconfig_locked fs/fsopen.c:296 [inline] __do_sys_fsconfig+0x991/0xb90 fs/fsopen.c:476 do_syscall_32_irqs_on arch/x86/entry/common.c:165 [inline] __do_fast_syscall_32+0x75/0x120 arch/x86/entry/common.c:386 do_fast_syscall_32+0x32/0x80 arch/x86/entry/common.c:411 entry_SYSENTER_compat_after_hwframe+0x84/0x8e RIP: 0023:0xf7282579 Code: b8 01 10 06 03 74 b4 01 10 07 03 74 b0 01 10 08 03 74 d8 01 00 00 00 00 00 00 00 00 00 00 00 00 00 51 52 55 89 e5 0f 34 cd 80 <5d> 5a 59 c3 90 90 90 90 8d b4 26 00 00 00 00 8d b4 26 00 00 00 00 RSP: 002b:00000000f5e745ac EFLAGS: 00000292 ORIG_RAX: 00000000000001af RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 0000000000000007 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000292 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 ---------------- Code disassembly (best guess), 2 bytes skipped: 0: 10 06 adc %al,(%rsi) 2: 03 74 b4 01 add 0x1(%rsp,%rsi,4),%esi 6: 10 07 adc %al,(%rdi) 8: 03 74 b0 01 add 0x1(%rax,%rsi,4),%esi c: 10 08 adc %cl,(%rax) e: 03 74 d8 01 add 0x1(%rax,%rbx,8),%esi 1e: 00 51 52 add %dl,0x52(%rcx) 21: 55 push %rbp 22: 89 e5 mov %esp,%ebp 24: 0f 34 sysenter 26: cd 80 int $0x80 * 28: 5d pop %rbp <-- trapping instruction 29: 5a pop %rdx 2a: 59 pop %rcx 2b: c3 ret 2c: 90 nop 2d: 90 nop 2e: 90 nop 2f: 90 nop 30: 8d b4 26 00 00 00 00 lea 0x0(%rsi,%riz,1),%esi 37: 8d b4 26 00 00 00 00 lea 0x0(%rsi,%riz,1),%esi