ERROR: (device loop1): remounting filesystem as read-only ERROR: (device loop1): txAbort: BUG: Bad page state in process syz.1.12 pfn:10c129 page:000000000731635a refcount:0 mapcount:0 mapping:0000000000000000 index:0x2f pfn:0x10c129 flags: 0x5ffc00000002006(referenced|uptodate|private|node=0|zone=2|lastcpupid=0x7ff) raw: 05ffc00000002006 fffffc0003306788 ffff800022b276e0 0000000000000000 raw: 000000000000002f ffff0000cbe4ce88 00000000ffffffff 0000000000000000 page dumped because: PAGE_FLAGS_CHECK_AT_FREE flag(s) set Modules linked in: CPU: 1 PID: 4491 Comm: syz.1.12 Not tainted syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 Call trace: dump_backtrace+0x1c0/0x1ec arch/arm64/kernel/stacktrace.c:158 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:165 __dump_stack+0x30/0x40 lib/dump_stack.c:88 dump_stack_lvl+0xf4/0x15c lib/dump_stack.c:106 dump_stack+0x1c/0x5c lib/dump_stack.c:113 bad_page+0x188/0x1a8 mm/page_alloc.c:726 free_page_is_bad_report+0xf8/0x170 mm/page_alloc.c:1308 free_page_is_bad mm/page_alloc.c:1318 [inline] free_pages_prepare mm/page_alloc.c:1479 [inline] free_pcp_prepare mm/page_alloc.c:1536 [inline] free_unref_page_prepare+0x620/0xaf0 mm/page_alloc.c:3413 free_unref_page_list+0xd8/0x8c8 mm/page_alloc.c:3554 release_pages+0xd84/0xfb4 mm/swap.c:1035 __pagevec_release+0x84/0xf8 mm/swap.c:1055 pagevec_release include/linux/pagevec.h:71 [inline] folio_batch_release include/linux/pagevec.h:135 [inline] truncate_inode_pages_range+0x2d4/0xd68 mm/truncate.c:397 truncate_inode_pages+0x2c/0x3c mm/truncate.c:476 jfs_remount+0x284/0x490 fs/jfs/super.c:451 legacy_reconfigure+0xf8/0x110 fs/fs_context.c:655 reconfigure_super+0x1d4/0x79c fs/super.c:977 do_remount fs/namespace.c:2741 [inline] path_mount+0xbdc/0xe80 fs/namespace.c:3400 do_mount fs/namespace.c:3421 [inline] __do_sys_mount fs/namespace.c:3629 [inline] __se_sys_mount fs/namespace.c:3606 [inline] __arm64_sys_mount+0x49c/0x59c fs/namespace.c:3606 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x98/0x2b4 arch/arm64/kernel/syscall.c:52 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:140 do_el0_svc+0x58/0x130 arch/arm64/kernel/syscall.c:204 el0_svc+0x58/0x128 arch/arm64/kernel/entry-common.c:637 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655 el0t_64_sync+0x18c/0x190 arch/arm64/kernel/entry.S:585 BUG: Bad page state in process syz.1.12 pfn:10c19e page:00000000497502eb refcount:0 mapcount:0 mapping:0000000000000000 index:0x2e pfn:0x10c19e flags: 0x5ffc00000002006(referenced|uptodate|private|node=0|zone=2|lastcpupid=0x7ff) raw: 05ffc00000002006 fffffc00032f5448 ffff800022b276e0 0000000000000000 raw: 000000000000002e ffff0000cbe4cd90 00000000ffffffff 0000000000000000 page dumped because: PAGE_FLAGS_CHECK_AT_FREE flag(s) set Modules linked in: CPU: 1 PID: 4491 Comm: syz.1.12 Tainted: G B syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 Call trace: dump_backtrace+0x1c0/0x1ec arch/arm64/kernel/stacktrace.c:158 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:165 __dump_stack+0x30/0x40 lib/dump_stack.c:88 dump_stack_lvl+0xf4/0x15c lib/dump_stack.c:106 dump_stack+0x1c/0x5c lib/dump_stack.c:113 bad_page+0x188/0x1a8 mm/page_alloc.c:726 free_page_is_bad_report+0xf8/0x170 mm/page_alloc.c:1308 free_page_is_bad mm/page_alloc.c:1318 [inline] free_pages_prepare mm/page_alloc.c:1479 [inline] free_pcp_prepare mm/page_alloc.c:1536 [inline] free_unref_page_prepare+0x620/0xaf0 mm/page_alloc.c:3413 free_unref_page_list+0xd8/0x8c8 mm/page_alloc.c:3554 release_pages+0xd84/0xfb4 mm/swap.c:1035 __pagevec_release+0x84/0xf8 mm/swap.c:1055 pagevec_release include/linux/pagevec.h:71 [inline] folio_batch_release include/linux/pagevec.h:135 [inline] truncate_inode_pages_range+0x2d4/0xd68 mm/truncate.c:397 truncate_inode_pages+0x2c/0x3c mm/truncate.c:476 jfs_remount+0x284/0x490 fs/jfs/super.c:451 legacy_reconfigure+0xf8/0x110 fs/fs_context.c:655 reconfigure_super+0x1d4/0x79c fs/super.c:977 do_remount fs/namespace.c:2741 [inline] path_mount+0xbdc/0xe80 fs/namespace.c:3400 do_mount fs/namespace.c:3421 [inline] __do_sys_mount fs/namespace.c:3629 [inline] __se_sys_mount fs/namespace.c:3606 [inline] __arm64_sys_mount+0x49c/0x59c fs/namespace.c:3606 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x98/0x2b4 arch/arm64/kernel/syscall.c:52 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:140 do_el0_svc+0x58/0x130 arch/arm64/kernel/syscall.c:204 el0_svc+0x58/0x128 arch/arm64/kernel/entry-common.c:637 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655 el0t_64_sync+0x18c/0x190 arch/arm64/kernel/entry.S:585 BUG: Bad page state in process syz.1.12 pfn:10bd51 page:000000002e1fd816 refcount:0 mapcount:0 mapping:0000000000000000 index:0x2d pfn:0x10bd51 flags: 0x5ffc00000002006(referenced|uptodate|private|node=0|zone=2|lastcpupid=0x7ff) raw: 05ffc00000002006 fffffc000326a488 ffff800022b276e0 0000000000000000 raw: 000000000000002d ffff0000cbe4cc98 00000000ffffffff 0000000000000000 page dumped because: PAGE_FLAGS_CHECK_AT_FREE flag(s) set Modules linked in: CPU: 1 PID: 4491 Comm: syz.1.12 Tainted: G B syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/26/2026 Call trace: dump_backtrace+0x1c0/0x1ec arch/arm64/kernel/stacktrace.c:158 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:165 __dump_stack+0x30/0x40 lib/dump_stack.c:88 dump_stack_lvl+0xf4/0x15c lib/dump_stack.c:106 dump_stack+0x1c/0x5c lib/dump_stack.c:113 bad_page+0x188/0x1a8 mm/page_alloc.c:726 free_page_is_bad_report+0xf8/0x170 mm/page_alloc.c:1308 free_page_is_bad mm/page_alloc.c:1318 [inline] free_pages_prepare mm/page_alloc.c:1479 [inline] free_pcp_prepare mm/page_alloc.c:1536 [inline] free_unref_page_prepare+0x620/0xaf0 mm/page_alloc.c:3413 free_unref_page_list+0xd8/0x8c8 mm/page_alloc.c:3554 release_pages+0xd84/0xfb4 mm/swap.c:1035 __pagevec_release+0x84/0xf8 mm/swap.c:1055 pagevec_release include/linux/pagevec.h:71 [inline] folio_batch_release include/linux/pagevec.h:135 [inline] truncate_inode_pages_range+0x2d4/0xd68 mm/truncate.c:397 truncate_inode_pages+0x2c/0x3c mm/truncate.c:476 jfs_remount+0x284/0x490 fs/jfs/super.c:451 legacy_reconfigure+0xf8/0x110 fs/fs_context.c:655 reconfigure_super+0x1d4/0x79c fs/super.c:977 do_remount fs/namespace.c:2741 [inline] path_mount+0xbdc/0xe80 fs/namespace.c:3400 do_mount fs/namespace.c:3421 [inline] __do_sys_mount fs/namespace.c:3629 [inline] __se_sys_mount fs/namespace.c:3606 [inline] __arm64_sys_mount+0x49c/0x59c fs/namespace.c:3606 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x98/0x2b4 arch/arm64/kernel/syscall.c:52 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:140 do_el0_svc+0x58/0x130 arch/arm64/kernel/syscall.c:204 el0_svc+0x58/0x128 arch/arm64/kernel/entry-common.c:637 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655 el0t_64_sync+0x18c/0x190 arch/arm64/kernel/entry.S:585 ERROR: (device loop1): dtReadFirst: btstack overrun ERROR: (device loop1): remounting filesystem as read-only btstack dump: bn = 0, index = 0 bn = 30, index = 0 bn = 0, index = 0 bn = 30, index = 0 bn = 0, index = 0 bn = 30, index = 0 bn = 0, index = 0 bn = 0, index = 0