BUG: Bad page state in process syz.1.156 pfn:13374e page:000000000bf184e3 refcount:0 mapcount:0 mapping:0000000000000000 index:0x24 pfn:0x13374e flags: 0x5ffc00000002046(referenced|uptodate|workingset|private|node=0|zone=2|lastcpupid=0x7ff) raw: 05ffc00000002046 ffff800021f27720 ffff800021f27720 0000000000000000 raw: 0000000000000024 ffff0000c8e1dd90 00000000ffffffff 0000000000000000 page dumped because: PAGE_FLAGS_CHECK_AT_FREE flag(s) set Modules linked in: CPU: 1 PID: 5212 Comm: syz.1.156 Not tainted 6.1.127-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 Call trace: dump_backtrace+0x1c8/0x1f4 arch/arm64/kernel/stacktrace.c:158 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:165 __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x108/0x170 lib/dump_stack.c:106 dump_stack+0x1c/0x5c lib/dump_stack.c:113 bad_page+0x1a4/0x1c4 mm/page_alloc.c:699 free_page_is_bad_report mm/page_alloc.c:1281 [inline] 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+0x3a0/0x1330 mm/page_alloc.c:3384 free_unref_page_list+0xec/0x9c0 mm/page_alloc.c:3525 release_pages+0x11c0/0x1418 mm/swap.c:1035 __pagevec_release+0x94/0x10c 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+0xc78/0xf10 mm/truncate.c:430 truncate_inode_pages+0x2c/0x3c mm/truncate.c:451 jfs_remount+0x2dc/0x594 fs/jfs/super.c:451 legacy_reconfigure+0xfc/0x114 fs/fs_context.c:655 reconfigure_super+0x318/0x7a4 fs/super.c:977 vfs_fsconfig_locked fs/fsopen.c:254 [inline] __do_sys_fsconfig fs/fsopen.c:439 [inline] __se_sys_fsconfig fs/fsopen.c:314 [inline] __arm64_sys_fsconfig+0xa1c/0xd18 fs/fsopen.c:314 __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+0x58/0x168 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