... Log Wrap ... Log Wrap ... Log Wrap ... ERROR: (device loop4): diWrite: ixpxd invalid ERROR: (device loop4): remounting filesystem as read-only ERROR: (device loop4): txAbort: BUG: Bad page state in process syz.4.126 pfn:137f54 page:00000000cf4faf8f refcount:0 mapcount:0 mapping:0000000000000000 index:0x2f pfn:0x137f54 flags: 0x5ffc00000002006(referenced|uptodate|private|node=0|zone=2|lastcpupid=0x7ff) raw: 05ffc00000002006 fffffc000331dbc8 ffff800021a176e0 0000000000000000 raw: 000000000000002f ffff0000cbab2e88 00000000ffffffff 0000000000000000 page dumped because: PAGE_FLAGS_CHECK_AT_FREE flag(s) set Modules linked in: CPU: 1 PID: 4892 Comm: syz.4.126 Not tainted syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/03/2025 Call trace: dump_backtrace+0x1c8/0x1f4 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+0xf8/0x160 lib/dump_stack.c:106 dump_stack+0x1c/0x5c lib/dump_stack.c:113 bad_page+0x188/0x1a8 mm/page_alloc.c:699 free_page_is_bad_report+0xf8/0x170 mm/page_alloc.c:1281 free_page_is_bad mm/page_alloc.c:1291 [inline] free_pages_prepare mm/page_alloc.c:1452 [inline] free_pcp_prepare mm/page_alloc.c:1509 [inline] free_unref_page_prepare+0x62c/0xb18 mm/page_alloc.c:3384 free_unref_page_list+0xd8/0x8ec mm/page_alloc.c:3525 release_pages+0xd84/0xfac 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+0x2a8/0xd20 mm/truncate.c:372 truncate_inode_pages+0x2c/0x3c mm/truncate.c:451 jfs_remount+0x280/0x484 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+0xbd4/0xe78 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/0x584 fs/namespace.c:3606 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x98/0x2bc arch/arm64/kernel/syscall.c:52 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:140 do_el0_svc+0x58/0x13c arch/arm64/kernel/syscall.c:204 el0_svc+0x58/0x138 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.4.126 pfn:10c76f page:000000006eff7543 refcount:0 mapcount:0 mapping:0000000000000000 index:0x2e pfn:0x10c76f flags: 0x5ffc00000002006(referenced|uptodate|private|node=0|zone=2|lastcpupid=0x7ff) raw: 05ffc00000002006 fffffc0003388308 ffff800021a176e0 0000000000000000 raw: 000000000000002e ffff0000c4ba6000 00000000ffffffff 0000000000000000 page dumped because: PAGE_FLAGS_CHECK_AT_FREE flag(s) set Modules linked in: CPU: 1 PID: 4892 Comm: syz.4.126 Tainted: G B syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/03/2025 Call trace: dump_backtrace+0x1c8/0x1f4 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+0xf8/0x160 lib/dump_stack.c:106 dump_stack+0x1c/0x5c lib/dump_stack.c:113 bad_page+0x188/0x1a8 mm/page_alloc.c:699 free_page_is_bad_report+0xf8/0x170 mm/page_alloc.c:1281 free_page_is_bad mm/page_alloc.c:1291 [inline] free_pages_prepare mm/page_alloc.c:1452 [inline] free_pcp_prepare mm/page_alloc.c:1509 [inline] free_unref_page_prepare+0x62c/0xb18 mm/page_alloc.c:3384 free_unref_page_list+0xd8/0x8ec mm/page_alloc.c:3525 release_pages+0xd84/0xfac 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+0x2a8/0xd20 mm/truncate.c:372 truncate_inode_pages+0x2c/0x3c mm/truncate.c:451 jfs_remount+0x280/0x484 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+0xbd4/0xe78 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/0x584 fs/namespace.c:3606 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x98/0x2bc arch/arm64/kernel/syscall.c:52 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:140 do_el0_svc+0x58/0x13c arch/arm64/kernel/syscall.c:204 el0_svc+0x58/0x138 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.4.126 pfn:10e20c page:0000000095e628d6 refcount:0 mapcount:0 mapping:0000000000000000 index:0x2d pfn:0x10e20c flags: 0x5ffc00000002006(referenced|uptodate|private|node=0|zone=2|lastcpupid=0x7ff) raw: 05ffc00000002006 fffffc00033fcf48 ffff800021a176e0 0000000000000000 raw: 000000000000002d ffff0000c4ba60f8 00000000ffffffff 0000000000000000 page dumped because: PAGE_FLAGS_CHECK_AT_FREE flag(s) set Modules linked in: CPU: 1 PID: 4892 Comm: syz.4.126 Tainted: G B syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/03/2025 Call trace: dump_backtrace+0x1c8/0x1f4 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+0xf8/0x160 lib/dump_stack.c:106 dump_stack+0x1c/0x5c lib/dump_stack.c:113 bad_page+0x188/0x1a8 mm/page_alloc.c:699 free_page_is_bad_report+0xf8/0x170 mm/page_alloc.c:1281 free_page_is_bad mm/page_alloc.c:1291 [inline] free_pages_prepare mm/page_alloc.c:1452 [inline] free_pcp_prepare mm/page_alloc.c:1509 [inline] free_unref_page_prepare+0x62c/0xb18 mm/page_alloc.c:3384 free_unref_page_list+0xd8/0x8ec mm/page_alloc.c:3525 release_pages+0xd84/0xfac 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+0x2a8/0xd20 mm/truncate.c:372 truncate_inode_pages+0x2c/0x3c mm/truncate.c:451 jfs_remount+0x280/0x484 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+0xbd4/0xe78 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/0x584 fs/namespace.c:3606 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x98/0x2bc arch/arm64/kernel/syscall.c:52 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:140 do_el0_svc+0x58/0x13c arch/arm64/kernel/syscall.c:204 el0_svc+0x58/0x138 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 loop4): dtSearch: stack overrun! ERROR: (device loop4): 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 jfs_lookup: dtSearch returned -5