BUG: Bad page state in process syz-executor pfn:11549c page:00000000a08bb23d refcount:0 mapcount:0 mapping:0000000000000000 index:0x4 pfn:0x11549c flags: 0x5ffc00000002006(referenced|uptodate|private|node=0|zone=2|lastcpupid=0x7ff) raw: 05ffc00000002006 fffffc00032a6e48 ffff80001f8575c0 0000000000000000 raw: 0000000000000004 ffff0000d05199b0 00000000ffffffff 0000000000000000 page dumped because: PAGE_FLAGS_CHECK_AT_FREE flag(s) set Modules linked in: CPU: 1 PID: 4660 Comm: syz-executor Not tainted 5.15.189-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 Call trace: dump_backtrace+0x0/0x43c arch/arm64/kernel/stacktrace.c:152 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:216 __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:652 check_free_page_bad+0xf4/0x16c mm/page_alloc.c:1199 check_free_page mm/page_alloc.c:1209 [inline] free_pages_prepare mm/page_alloc.c:1334 [inline] free_pcp_prepare mm/page_alloc.c:1391 [inline] free_unref_page_prepare+0x744/0xaa0 mm/page_alloc.c:3317 free_unref_page_list+0xdc/0x754 mm/page_alloc.c:3433 release_pages+0x13c8/0x16e0 mm/swap.c:963 __pagevec_release+0x84/0xf8 mm/swap.c:983 pagevec_release include/linux/pagevec.h:81 [inline] truncate_inode_pages_range+0x29c/0x9b8 mm/truncate.c:329 truncate_inode_pages+0x2c/0x3c mm/truncate.c:425 dbUnmount+0xf4/0x168 fs/jfs/jfs_dmap.c:264 jfs_umount+0x1c4/0x328 fs/jfs/jfs_umount.c:89 jfs_put_super+0x90/0x188 fs/jfs/super.c:194 generic_shutdown_super+0x130/0x2f0 fs/super.c:475 kill_block_super+0x70/0xdc fs/super.c:1427 deactivate_locked_super+0xb8/0x13c fs/super.c:335 deactivate_super+0xf8/0x118 fs/super.c:366 cleanup_mnt+0x3a4/0x458 fs/namespace.c:1139 __cleanup_mnt+0x20/0x30 fs/namespace.c:1146 task_work_run+0x12c/0x1e0 kernel/task_work.c:188 tracehook_notify_resume include/linux/tracehook.h:189 [inline] do_notify_resume+0x24b4/0x3128 arch/arm64/kernel/signal.c:949 prepare_exit_to_user_mode arch/arm64/kernel/entry-common.c:133 [inline] exit_to_user_mode arch/arm64/kernel/entry-common.c:138 [inline] el0_svc+0xf0/0x1e0 arch/arm64/kernel/entry-common.c:609 el0t_64_sync_handler+0xcc/0xe4 arch/arm64/kernel/entry-common.c:626 el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584 BUG: Bad page state in process syz-executor pfn:10a9b9 page:00000000a66f443f refcount:0 mapcount:0 mapping:0000000000000000 index:0x3 pfn:0x10a9b9 flags: 0x5ffc00000002006(referenced|uptodate|private|node=0|zone=2|lastcpupid=0x7ff) raw: 05ffc00000002006 fffffc00031f63c8 ffff80001f8575c0 0000000000000000 raw: 0000000000000003 ffff0000d0519aa8 00000000ffffffff 0000000000000000 page dumped because: PAGE_FLAGS_CHECK_AT_FREE flag(s) set Modules linked in: CPU: 1 PID: 4660 Comm: syz-executor Tainted: G B 5.15.189-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 Call trace: dump_backtrace+0x0/0x43c arch/arm64/kernel/stacktrace.c:152 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:216 __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:652 check_free_page_bad+0xf4/0x16c mm/page_alloc.c:1199 check_free_page mm/page_alloc.c:1209 [inline] free_pages_prepare mm/page_alloc.c:1334 [inline] free_pcp_prepare mm/page_alloc.c:1391 [inline] free_unref_page_prepare+0x744/0xaa0 mm/page_alloc.c:3317 free_unref_page_list+0xdc/0x754 mm/page_alloc.c:3433 release_pages+0x13c8/0x16e0 mm/swap.c:963 __pagevec_release+0x84/0xf8 mm/swap.c:983 pagevec_release include/linux/pagevec.h:81 [inline] truncate_inode_pages_range+0x29c/0x9b8 mm/truncate.c:329 truncate_inode_pages+0x2c/0x3c mm/truncate.c:425 dbUnmount+0xf4/0x168 fs/jfs/jfs_dmap.c:264 jfs_umount+0x1c4/0x328 fs/jfs/jfs_umount.c:89 jfs_put_super+0x90/0x188 fs/jfs/super.c:194 generic_shutdown_super+0x130/0x2f0 fs/super.c:475 kill_block_super+0x70/0xdc fs/super.c:1427 deactivate_locked_super+0xb8/0x13c fs/super.c:335 deactivate_super+0xf8/0x118 fs/super.c:366 cleanup_mnt+0x3a4/0x458 fs/namespace.c:1139 __cleanup_mnt+0x20/0x30 fs/namespace.c:1146 task_work_run+0x12c/0x1e0 kernel/task_work.c:188 tracehook_notify_resume include/linux/tracehook.h:189 [inline] do_notify_resume+0x24b4/0x3128 arch/arm64/kernel/signal.c:949 prepare_exit_to_user_mode arch/arm64/kernel/entry-common.c:133 [inline] exit_to_user_mode arch/arm64/kernel/entry-common.c:138 [inline] el0_svc+0xf0/0x1e0 arch/arm64/kernel/entry-common.c:609 el0t_64_sync_handler+0xcc/0xe4 arch/arm64/kernel/entry-common.c:626 el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584 BUG: Bad page state in process syz-executor pfn:12cfea page:000000008e3b8aaa refcount:0 mapcount:0 mapping:0000000000000000 index:0x4 pfn:0x12cfea flags: 0x5ffc00000002006(referenced|uptodate|private|node=0|zone=2|lastcpupid=0x7ff) raw: 05ffc00000002006 fffffc0003b3f9c8 ffff80001f8575c0 0000000000000000 raw: 0000000000000004 ffff0000e92ad5d0 00000000ffffffff 0000000000000000 page dumped because: PAGE_FLAGS_CHECK_AT_FREE flag(s) set Modules linked in: CPU: 0 PID: 4660 Comm: syz-executor Tainted: G B 5.15.189-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 Call trace: dump_backtrace+0x0/0x43c arch/arm64/kernel/stacktrace.c:152 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:216 __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:652 check_free_page_bad+0xf4/0x16c mm/page_alloc.c:1199 check_free_page mm/page_alloc.c:1209 [inline] free_pages_prepare mm/page_alloc.c:1334 [inline] free_pcp_prepare mm/page_alloc.c:1391 [inline] free_unref_page_prepare+0x744/0xaa0 mm/page_alloc.c:3317 free_unref_page_list+0xdc/0x754 mm/page_alloc.c:3433 release_pages+0x13c8/0x16e0 mm/swap.c:963 __pagevec_release+0x84/0xf8 mm/swap.c:983 pagevec_release include/linux/pagevec.h:81 [inline] truncate_inode_pages_range+0x29c/0x9b8 mm/truncate.c:329 truncate_inode_pages+0x2c/0x3c mm/truncate.c:425 dbUnmount+0xf4/0x168 fs/jfs/jfs_dmap.c:264 jfs_umount+0x1c4/0x328 fs/jfs/jfs_umount.c:89 jfs_put_super+0x90/0x188 fs/jfs/super.c:194 generic_shutdown_super+0x130/0x2f0 fs/super.c:475 kill_block_super+0x70/0xdc fs/super.c:1427 deactivate_locked_super+0xb8/0x13c fs/super.c:335 deactivate_super+0xf8/0x118 fs/super.c:366 cleanup_mnt+0x3a4/0x458 fs/namespace.c:1139 __cleanup_mnt+0x20/0x30 fs/namespace.c:1146 task_work_run+0x12c/0x1e0 kernel/task_work.c:188 tracehook_notify_resume include/linux/tracehook.h:189 [inline] do_notify_resume+0x24b4/0x3128 arch/arm64/kernel/signal.c:949 prepare_exit_to_user_mode arch/arm64/kernel/entry-common.c:133 [inline] exit_to_user_mode arch/arm64/kernel/entry-common.c:138 [inline] el0_svc+0xf0/0x1e0 arch/arm64/kernel/entry-common.c:609 el0t_64_sync_handler+0xcc/0xe4 arch/arm64/kernel/entry-common.c:626 el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584 BUG: Bad page state in process syz-executor pfn:12cfe7 page:00000000d7da70f3 refcount:0 mapcount:0 mapping:0000000000000000 index:0x3 pfn:0x12cfe7 flags: 0x5ffc00000002006(referenced|uptodate|private|node=0|zone=2|lastcpupid=0x7ff) raw: 05ffc00000002006 fffffc0003a16e08 ffff80001f8575c0 0000000000000000 raw: 0000000000000003 ffff0000e92ad6c8 00000000ffffffff 0000000000000000 page dumped because: PAGE_FLAGS_CHECK_AT_FREE flag(s) set Modules linked in: CPU: 0 PID: 4660 Comm: syz-executor Tainted: G B 5.15.189-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 Call trace: dump_backtrace+0x0/0x43c arch/arm64/kernel/stacktrace.c:152 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:216 __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:652 check_free_page_bad+0xf4/0x16c mm/page_alloc.c:1199 check_free_page mm/page_alloc.c:1209 [inline] free_pages_prepare mm/page_alloc.c:1334 [inline] free_pcp_prepare mm/page_alloc.c:1391 [inline] free_unref_page_prepare+0x744/0xaa0 mm/page_alloc.c:3317 free_unref_page_list+0xdc/0x754 mm/page_alloc.c:3433 release_pages+0x13c8/0x16e0 mm/swap.c:963 __pagevec_release+0x84/0xf8 mm/swap.c:983 pagevec_release include/linux/pagevec.h:81 [inline] truncate_inode_pages_range+0x29c/0x9b8 mm/truncate.c:329 truncate_inode_pages+0x2c/0x3c mm/truncate.c:425 dbUnmount+0xf4/0x168 fs/jfs/jfs_dmap.c:264 jfs_umount+0x1c4/0x328 fs/jfs/jfs_umount.c:89 jfs_put_super+0x90/0x188 fs/jfs/super.c:194 generic_shutdown_super+0x130/0x2f0 fs/super.c:475 kill_block_super+0x70/0xdc fs/super.c:1427 deactivate_locked_super+0xb8/0x13c fs/super.c:335 deactivate_super+0xf8/0x118 fs/super.c:366 cleanup_mnt+0x3a4/0x458 fs/namespace.c:1139 __cleanup_mnt+0x20/0x30 fs/namespace.c:1146 task_work_run+0x12c/0x1e0 kernel/task_work.c:188 tracehook_notify_resume include/linux/tracehook.h:189 [inline] do_notify_resume+0x24b4/0x3128 arch/arm64/kernel/signal.c:949 prepare_exit_to_user_mode arch/arm64/kernel/entry-common.c:133 [inline] exit_to_user_mode arch/arm64/kernel/entry-common.c:138 [inline] el0_svc+0xf0/0x1e0 arch/arm64/kernel/entry-common.c:609 el0t_64_sync_handler+0xcc/0xe4 arch/arm64/kernel/entry-common.c:626 el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584 BUG: Bad page state in process syz-executor pfn:10de07 page:00000000c6c1c647 refcount:0 mapcount:0 mapping:0000000000000000 index:0x4 pfn:0x10de07 flags: 0x5ffc00000002006(referenced|uptodate|private|node=0|zone=2|lastcpupid=0x7ff) raw: 05ffc00000002006 fffffc00032ecc88 ffff80001f8575c0 0000000000000000 raw: 0000000000000004 ffff0000e8e4bba0 00000000ffffffff 0000000000000000 page dumped because: PAGE_FLAGS_CHECK_AT_FREE flag(s) set Modules linked in: CPU: 1 PID: 4660 Comm: syz-executor Tainted: G B 5.15.189-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 Call trace: dump_backtrace+0x0/0x43c arch/arm64/kernel/stacktrace.c:152 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:216 __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:652 check_free_page_bad+0xf4/0x16c mm/page_alloc.c:1199 check_free_page mm/page_alloc.c:1209 [inline] free_pages_prepare mm/page_alloc.c:1334 [inline] free_pcp_prepare mm/page_alloc.c:1391 [inline] free_unref_page_prepare+0x744/0xaa0 mm/page_alloc.c:3317 free_unref_page_list+0xdc/0x754 mm/page_alloc.c:3433 release_pages+0x13c8/0x16e0 mm/swap.c:963 __pagevec_release+0x84/0xf8 mm/swap.c:983 pagevec_release include/linux/pagevec.h:81 [inline] truncate_inode_pages_range+0x29c/0x9b8 mm/truncate.c:329 truncate_inode_pages+0x2c/0x3c mm/truncate.c:425 dbUnmount+0xf4/0x168 fs/jfs/jfs_dmap.c:264 jfs_umount+0x1c4/0x328 fs/jfs/jfs_umount.c:89 jfs_put_super+0x90/0x188 fs/jfs/super.c:194 generic_shutdown_super+0x130/0x2f0 fs/super.c:475 kill_block_super+0x70/0xdc fs/super.c:1427 deactivate_locked_super+0xb8/0x13c fs/super.c:335 deactivate_super+0xf8/0x118 fs/super.c:366 cleanup_mnt+0x3a4/0x458 fs/namespace.c:1139 __cleanup_mnt+0x20/0x30 fs/namespace.c:1146 task_work_run+0x12c/0x1e0 kernel/task_work.c:188 tracehook_notify_resume include/linux/tracehook.h:189 [inline] do_notify_resume+0x24b4/0x3128 arch/arm64/kernel/signal.c:949 prepare_exit_to_user_mode arch/arm64/kernel/entry-common.c:133 [inline] exit_to_user_mode arch/arm64/kernel/entry-common.c:138 [inline] el0_svc+0xf0/0x1e0 arch/arm64/kernel/entry-common.c:609 el0t_64_sync_handler+0xcc/0xe4 arch/arm64/kernel/entry-common.c:626 el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584 BUG: Bad page state in process syz-executor pfn:10bb32 page:00000000faee074d refcount:0 mapcount:0 mapping:0000000000000000 index:0x3 pfn:0x10bb32 flags: 0x5ffc00000002006(referenced|uptodate|private|node=0|zone=2|lastcpupid=0x7ff) raw: 05ffc00000002006 fffffc000326b088 ffff80001f8575c0 0000000000000000 raw: 0000000000000003 ffff0000e8e4bc98 00000000ffffffff 0000000000000000 page dumped because: PAGE_FLAGS_CHECK_AT_FREE flag(s) set Modules linked in: CPU: 1 PID: 4660 Comm: syz-executor Tainted: G B 5.15.189-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 Call trace: dump_backtrace+0x0/0x43c arch/arm64/kernel/stacktrace.c:152 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:216 __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:652 check_free_page_bad+0xf4/0x16c mm/page_alloc.c:1199 check_free_page mm/page_alloc.c:1209 [inline] free_pages_prepare mm/page_alloc.c:1334 [inline] free_pcp_prepare mm/page_alloc.c:1391 [inline] free_unref_page_prepare+0x744/0xaa0 mm/page_alloc.c:3317 free_unref_page_list+0xdc/0x754 mm/page_alloc.c:3433 release_pages+0x13c8/0x16e0 mm/swap.c:963 __pagevec_release+0x84/0xf8 mm/swap.c:983 pagevec_release include/linux/pagevec.h:81 [inline] truncate_inode_pages_range+0x29c/0x9b8 mm/truncate.c:329 truncate_inode_pages+0x2c/0x3c mm/truncate.c:425 dbUnmount+0xf4/0x168 fs/jfs/jfs_dmap.c:264 jfs_umount+0x1c4/0x328 fs/jfs/jfs_umount.c:89 jfs_put_super+0x90/0x188 fs/jfs/super.c:194 generic_shutdown_super+0x130/0x2f0 fs/super.c:475 kill_block_super+0x70/0xdc fs/super.c:1427 deactivate_locked_super+0xb8/0x13c fs/super.c:335 deactivate_super+0xf8/0x118 fs/super.c:366 cleanup_mnt+0x3a4/0x458 fs/namespace.c:1139 __cleanup_mnt+0x20/0x30 fs/namespace.c:1146 task_work_run+0x12c/0x1e0 kernel/task_work.c:188 tracehook_notify_resume include/linux/tracehook.h:189 [inline] do_notify_resume+0x24b4/0x3128 arch/arm64/kernel/signal.c:949 prepare_exit_to_user_mode arch/arm64/kernel/entry-common.c:133 [inline] exit_to_user_mode arch/arm64/kernel/entry-common.c:138 [inline] el0_svc+0xf0/0x1e0 arch/arm64/kernel/entry-common.c:609 el0t_64_sync_handler+0xcc/0xe4 arch/arm64/kernel/entry-common.c:626 el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584 BUG: Bad page state in process syz-executor pfn:10605d page:00000000a344b4cd refcount:0 mapcount:0 mapping:0000000000000000 index:0x4 pfn:0x10605d flags: 0x5ffc00000002006(referenced|uptodate|private|node=0|zone=2|lastcpupid=0x7ff) raw: 05ffc00000002006 fffffc000370df88 ffff80001f8575c0 0000000000000000 raw: 0000000000000004 ffff0000e92add90 00000000ffffffff 0000000000000000 page dumped because: PAGE_FLAGS_CHECK_AT_FREE flag(s) set Modules linked in: CPU: 1 PID: 4660 Comm: syz-executor Tainted: G B 5.15.189-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 Call trace: dump_backtrace+0x0/0x43c arch/arm64/kernel/stacktrace.c:152 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:216 __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:652 check_free_page_bad+0xf4/0x16c mm/page_alloc.c:1199 check_free_page mm/page_alloc.c:1209 [inline] free_pages_prepare mm/page_alloc.c:1334 [inline] free_pcp_prepare mm/page_alloc.c:1391 [inline] free_unref_page_prepare+0x744/0xaa0 mm/page_alloc.c:3317 free_unref_page_list+0xdc/0x754 mm/page_alloc.c:3433 release_pages+0x13c8/0x16e0 mm/swap.c:963 __pagevec_release+0x84/0xf8 mm/swap.c:983 pagevec_release include/linux/pagevec.h:81 [inline] truncate_inode_pages_range+0x29c/0x9b8 mm/truncate.c:329 truncate_inode_pages+0x2c/0x3c mm/truncate.c:425 dbUnmount+0xf4/0x168 fs/jfs/jfs_dmap.c:264 jfs_umount+0x1c4/0x328 fs/jfs/jfs_umount.c:89 jfs_put_super+0x90/0x188 fs/jfs/super.c:194 generic_shutdown_super+0x130/0x2f0 fs/super.c:475 kill_block_super+0x70/0xdc fs/super.c:1427 deactivate_locked_super+0xb8/0x13c fs/super.c:335 deactivate_super+0xf8/0x118 fs/super.c:366 cleanup_mnt+0x3a4/0x458 fs/namespace.c:1139 __cleanup_mnt+0x20/0x30 fs/namespace.c:1146 task_work_run+0x12c/0x1e0 kernel/task_work.c:188 tracehook_notify_resume include/linux/tracehook.h:189 [inline] do_notify_resume+0x24b4/0x3128 arch/arm64/kernel/signal.c:949 prepare_exit_to_user_mode arch/arm64/kernel/entry-common.c:133 [inline] exit_to_user_mode arch/arm64/kernel/entry-common.c:138 [inline] el0_svc+0xf0/0x1e0 arch/arm64/kernel/entry-common.c:609 el0t_64_sync_handler+0xcc/0xe4 arch/arm64/kernel/entry-common.c:626 el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584 BUG: Bad page state in process syz-executor pfn:11c37e page:000000001f66e052 refcount:0 mapcount:0 mapping:0000000000000000 index:0x3 pfn:0x11c37e flags: 0x5ffc00000002006(referenced|uptodate|private|node=0|zone=2|lastcpupid=0x7ff) raw: 05ffc00000002006 fffffc0003281748 ffff80001f8575c0 0000000000000000 raw: 0000000000000003 ffff0000e92ade88 00000000ffffffff 0000000000000000 page dumped because: PAGE_FLAGS_CHECK_AT_FREE flag(s) set Modules linked in: CPU: 1 PID: 4660 Comm: syz-executor Tainted: G B 5.15.189-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 Call trace: dump_backtrace+0x0/0x43c arch/arm64/kernel/stacktrace.c:152 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:216 __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:652 check_free_page_bad+0xf4/0x16c mm/page_alloc.c:1199 check_free_page mm/page_alloc.c:1209 [inline] free_pages_prepare mm/page_alloc.c:1334 [inline] free_pcp_prepare mm/page_alloc.c:1391 [inline] free_unref_page_prepare+0x744/0xaa0 mm/page_alloc.c:3317 free_unref_page_list+0xdc/0x754 mm/page_alloc.c:3433 release_pages+0x13c8/0x16e0 mm/swap.c:963 __pagevec_release+0x84/0xf8 mm/swap.c:983 pagevec_release include/linux/pagevec.h:81 [inline] truncate_inode_pages_range+0x29c/0x9b8 mm/truncate.c:329 truncate_inode_pages+0x2c/0x3c mm/truncate.c:425 dbUnmount+0xf4/0x168 fs/jfs/jfs_dmap.c:264 jfs_umount+0x1c4/0x328 fs/jfs/jfs_umount.c:89 jfs_put_super+0x90/0x188 fs/jfs/super.c:194 generic_shutdown_super+0x130/0x2f0 fs/super.c:475 kill_block_super+0x70/0xdc fs/super.c:1427 deactivate_locked_super+0xb8/0x13c fs/super.c:335 deactivate_super+0xf8/0x118 fs/super.c:366 cleanup_mnt+0x3a4/0x458 fs/namespace.c:1139 __cleanup_mnt+0x20/0x30 fs/namespace.c:1146 task_work_run+0x12c/0x1e0 kernel/task_work.c:188 tracehook_notify_resume include/linux/tracehook.h:189 [inline] do_notify_resume+0x24b4/0x3128 arch/arm64/kernel/signal.c:949 prepare_exit_to_user_mode arch/arm64/kernel/entry-common.c:133 [inline] exit_to_user_mode arch/arm64/kernel/entry-common.c:138 [inline] el0_svc+0xf0/0x1e0 arch/arm64/kernel/entry-common.c:609 el0t_64_sync_handler+0xcc/0xe4 arch/arm64/kernel/entry-common.c:626 el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584 BUG: Bad page state in process syz-executor pfn:10b894 page:00000000f0068e9d refcount:0 mapcount:0 mapping:0000000000000000 index:0x4 pfn:0x10b894 flags: 0x5ffc00000002006(referenced|uptodate|private|node=0|zone=2|lastcpupid=0x7ff) raw: 05ffc00000002006 fffffc0003480588 ffff80001f8575c0 0000000000000000 raw: 0000000000000004 ffff0000c99f31f0 00000000ffffffff 0000000000000000 page dumped because: PAGE_FLAGS_CHECK_AT_FREE flag(s) set Modules linked in: CPU: 1 PID: 4660 Comm: syz-executor Tainted: G B 5.15.189-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 Call trace: dump_backtrace+0x0/0x43c arch/arm64/kernel/stacktrace.c:152 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:216 __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:652 check_free_page_bad+0xf4/0x16c mm/page_alloc.c:1199 check_free_page mm/page_alloc.c:1209 [inline] free_pages_prepare mm/page_alloc.c:1334 [inline] free_pcp_prepare mm/page_alloc.c:1391 [inline] free_unref_page_prepare+0x744/0xaa0 mm/page_alloc.c:3317 free_unref_page_list+0xdc/0x754 mm/page_alloc.c:3433 release_pages+0x13c8/0x16e0 mm/swap.c:963 __pagevec_release+0x84/0xf8 mm/swap.c:983 pagevec_release include/linux/pagevec.h:81 [inline] truncate_inode_pages_range+0x29c/0x9b8 mm/truncate.c:329 truncate_inode_pages+0x2c/0x3c mm/truncate.c:425 dbUnmount+0xf4/0x168 fs/jfs/jfs_dmap.c:264 jfs_umount+0x1c4/0x328 fs/jfs/jfs_umount.c:89 jfs_put_super+0x90/0x188 fs/jfs/super.c:194 generic_shutdown_super+0x130/0x2f0 fs/super.c:475 kill_block_super+0x70/0xdc fs/super.c:1427 deactivate_locked_super+0xb8/0x13c fs/super.c:335 deactivate_super+0xf8/0x118 fs/super.c:366 cleanup_mnt+0x3a4/0x458 fs/namespace.c:1139 __cleanup_mnt+0x20/0x30 fs/namespace.c:1146 task_work_run+0x12c/0x1e0 kernel/task_work.c:188 tracehook_notify_resume include/linux/tracehook.h:189 [inline] do_notify_resume+0x24b4/0x3128 arch/arm64/kernel/signal.c:949 prepare_exit_to_user_mode arch/arm64/kernel/entry-common.c:133 [inline] exit_to_user_mode arch/arm64/kernel/entry-common.c:138 [inline] el0_svc+0xf0/0x1e0 arch/arm64/kernel/entry-common.c:609 el0t_64_sync_handler+0xcc/0xe4 arch/arm64/kernel/entry-common.c:626 el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584 BUG: Bad page state in process syz-executor pfn:112016 page:00000000bfa9ae53 refcount:0 mapcount:0 mapping:0000000000000000 index:0x3 pfn:0x112016 flags: 0x5ffc00000002006(referenced|uptodate|private|node=0|zone=2|lastcpupid=0x7ff) raw: 05ffc00000002006 fffffc00033b4b48 ffff80001f8575c0 0000000000000000 raw: 0000000000000003 ffff0000c99f32e8 00000000ffffffff 0000000000000000 page dumped because: PAGE_FLAGS_CHECK_AT_FREE flag(s) set Modules linked in: CPU: 1 PID: 4660 Comm: syz-executor Tainted: G B 5.15.189-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 Call trace: dump_backtrace+0x0/0x43c arch/arm64/kernel/stacktrace.c:152 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:216 __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:652 check_free_page_bad+0xf4/0x16c mm/page_alloc.c:1199 check_free_page mm/page_alloc.c:1209 [inline] free_pages_prepare mm/page_alloc.c:1334 [inline] free_pcp_prepare mm/page_alloc.c:1391 [inline] free_unref_page_prepare+0x744/0xaa0 mm/page_alloc.c:3317 free_unref_page_list+0xdc/0x754 mm/page_alloc.c:3433 release_pages+0x13c8/0x16e0 mm/swap.c:963 __pagevec_release+0x84/0xf8 mm/swap.c:983 pagevec_release include/linux/pagevec.h:81 [inline] truncate_inode_pages_range+0x29c/0x9b8 mm/truncate.c:329 truncate_inode_pages+0x2c/0x3c mm/truncate.c:425 dbUnmount+0xf4/0x168 fs/jfs/jfs_dmap.c:264 jfs_umount+0x1c4/0x328 fs/jfs/jfs_umount.c:89 jfs_put_super+0x90/0x188 fs/jfs/super.c:194 generic_shutdown_super+0x130/0x2f0 fs/super.c:475 kill_block_super+0x70/0xdc fs/super.c:1427 deactivate_locked_super+0xb8/0x13c fs/super.c:335 deactivate_super+0xf8/0x118 fs/super.c:366 cleanup_mnt+0x3a4/0x458 fs/namespace.c:1139 __cleanup_mnt+0x20/0x30 fs/namespace.c:1146 task_work_run+0x12c/0x1e0 kernel/task_work.c:188 tracehook_notify_resume include/linux/tracehook.h:189 [inline] do_notify_resume+0x24b4/0x3128 arch/arm64/kernel/signal.c:949 prepare_exit_to_user_mode arch/arm64/kernel/entry-common.c:133 [inline] exit_to_user_mode arch/arm64/kernel/entry-common.c:138 [inline] el0_svc+0xf0/0x1e0 arch/arm64/kernel/entry-common.c:609 el0t_64_sync_handler+0xcc/0xe4 arch/arm64/kernel/entry-common.c:626 el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584 BUG: Bad page state in process syz-executor pfn:1120f5 page:00000000d2a3f8ae refcount:0 mapcount:0 mapping:0000000000000000 index:0x4 pfn:0x1120f5 flags: 0x5ffc00000002006(referenced|uptodate|private|node=0|zone=2|lastcpupid=0x7ff) raw: 05ffc00000002006 fffffc00032e7d48 ffff80001f8575c0 0000000000000000 raw: 0000000000000004 ffff0000cb2283e0 00000000ffffffff 0000000000000000 page dumped because: PAGE_FLAGS_CHECK_AT_FREE flag(s) set Modules linked in: CPU: 1 PID: 4660 Comm: syz-executor Tainted: G B 5.15.189-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 Call trace: dump_backtrace+0x0/0x43c arch/arm64/kernel/stacktrace.c:152 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:216 __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:652 check_free_page_bad+0xf4/0x16c mm/page_alloc.c:1199 check_free_page mm/page_alloc.c:1209 [inline] free_pages_prepare mm/page_alloc.c:1334 [inline] free_pcp_prepare mm/page_alloc.c:1391 [inline] free_unref_page_prepare+0x744/0xaa0 mm/page_alloc.c:3317 free_unref_page_list+0xdc/0x754 mm/page_alloc.c:3433 release_pages+0x13c8/0x16e0 mm/swap.c:963 __pagevec_release+0x84/0xf8 mm/swap.c:983 pagevec_release include/linux/pagevec.h:81 [inline] truncate_inode_pages_range+0x29c/0x9b8 mm/truncate.c:329 truncate_inode_pages+0x2c/0x3c mm/truncate.c:425 dbUnmount+0xf4/0x168 fs/jfs/jfs_dmap.c:264 jfs_umount+0x1c4/0x328 fs/jfs/jfs_umount.c:89 jfs_put_super+0x90/0x188 fs/jfs/super.c:194 generic_shutdown_super+0x130/0x2f0 fs/super.c:475 kill_block_super+0x70/0xdc fs/super.c:1427 deactivate_locked_super+0xb8/0x13c fs/super.c:335 deactivate_super+0xf8/0x118 fs/super.c:366 cleanup_mnt+0x3a4/0x458 fs/namespace.c:1139 __cleanup_mnt+0x20/0x30 fs/namespace.c:1146 task_work_run+0x12c/0x1e0 kernel/task_work.c:188 tracehook_notify_resume include/linux/tracehook.h:189 [inline] do_notify_resume+0x24b4/0x3128 arch/arm64/kernel/signal.c:949 prepare_exit_to_user_mode arch/arm64/kernel/entry-common.c:133 [inline] exit_to_user_mode arch/arm64/kernel/entry-common.c:138 [inline] el0_svc+0xf0/0x1e0 arch/arm64/kernel/entry-common.c:609 el0t_64_sync_handler+0xcc/0xe4 arch/arm64/kernel/entry-common.c:626 el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584 BUG: Bad page state in process syz-executor pfn:10b9f5 page:0000000027446c69 refcount:0 mapcount:0 mapping:0000000000000000 index:0x3 pfn:0x10b9f5 flags: 0x5ffc00000002006(referenced|uptodate|private|node=0|zone=2|lastcpupid=0x7ff) raw: 05ffc00000002006 fffffc0003585b88 ffff80001f8575c0 0000000000000000 raw: 0000000000000003 ffff0000cb2284d8 00000000ffffffff 0000000000000000 page dumped because: PAGE_FLAGS_CHECK_AT_FREE flag(s) set Modules linked in: CPU: 0 PID: 4660 Comm: syz-executor Tainted: G B 5.15.189-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 Call trace: dump_backtrace+0x0/0x43c arch/arm64/kernel/stacktrace.c:152 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:216 __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:652 check_free_page_bad+0xf4/0x16c mm/page_alloc.c:1199 check_free_page mm/page_alloc.c:1209 [inline] free_pages_prepare mm/page_alloc.c:1334 [inline] free_pcp_prepare mm/page_alloc.c:1391 [inline] free_unref_page_prepare+0x744/0xaa0 mm/page_alloc.c:3317 free_unref_page_list+0xdc/0x754 mm/page_alloc.c:3433 release_pages+0x13c8/0x16e0 mm/swap.c:963 __pagevec_release+0x84/0xf8 mm/swap.c:983 pagevec_release include/linux/pagevec.h:81 [inline] truncate_inode_pages_range+0x29c/0x9b8 mm/truncate.c:329 truncate_inode_pages+0x2c/0x3c mm/truncate.c:425 dbUnmount+0xf4/0x168 fs/jfs/jfs_dmap.c:264 jfs_umount+0x1c4/0x328 fs/jfs/jfs_umount.c:89 jfs_put_super+0x90/0x188 fs/jfs/super.c:194 generic_shutdown_super+0x130/0x2f0 fs/super.c:475 kill_block_super+0x70/0xdc fs/super.c:1427 deactivate_locked_super+0xb8/0x13c fs/super.c:335 deactivate_super+0xf8/0x118 fs/super.c:366 cleanup_mnt+0x3a4/0x458 fs/namespace.c:1139 __cleanup_mnt+0x20/0x30 fs/namespace.c:1146 task_work_run+0x12c/0x1e0 kernel/task_work.c:188 tracehook_notify_resume include/linux/tracehook.h:189 [inline] do_notify_resume+0x24b4/0x3128 arch/arm64/kernel/signal.c:949 prepare_exit_to_user_mode arch/arm64/kernel/entry-common.c:133 [inline] exit_to_user_mode arch/arm64/kernel/entry-common.c:138 [inline] el0_svc+0xf0/0x1e0 arch/arm64/kernel/entry-common.c:609 el0t_64_sync_handler+0xcc/0xe4 arch/arm64/kernel/entry-common.c:626 el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584 BUG: Bad page state in process syz-executor pfn:12cf84 page:0000000071fc2f18 refcount:0 mapcount:0 mapping:0000000000000000 index:0x4 pfn:0x12cf84 flags: 0x5ffc00000002006(referenced|uptodate|private|node=0|zone=2|lastcpupid=0x7ff) raw: 05ffc00000002006 fffffc0003a02648 ffff80001f8575c0 0000000000000000 raw: 0000000000000004 ffff0000cb1265d0 00000000ffffffff 0000000000000000 page dumped because: PAGE_FLAGS_CHECK_AT_FREE flag(s) set Modules linked in: CPU: 0 PID: 4660 Comm: syz-executor Tainted: G B 5.15.189-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 Call trace: dump_backtrace+0x0/0x43c arch/arm64/kernel/stacktrace.c:152 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:216 __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:652 check_free_page_bad+0xf4/0x16c mm/page_alloc.c:1199 check_free_page mm/page_alloc.c:1209 [inline] free_pages_prepare mm/page_alloc.c:1334 [inline] free_pcp_prepare mm/page_alloc.c:1391 [inline] free_unref_page_prepare+0x744/0xaa0 mm/page_alloc.c:3317 free_unref_page_list+0xdc/0x754 mm/page_alloc.c:3433 release_pages+0x13c8/0x16e0 mm/swap.c:963 __pagevec_release+0x84/0xf8 mm/swap.c:983 pagevec_release include/linux/pagevec.h:81 [inline] truncate_inode_pages_range+0x29c/0x9b8 mm/truncate.c:329 truncate_inode_pages+0x2c/0x3c mm/truncate.c:425 dbUnmount+0xf4/0x168 fs/jfs/jfs_dmap.c:264 jfs_umount+0x1c4/0x328 fs/jfs/jfs_umount.c:89 jfs_put_super+0x90/0x188 fs/jfs/super.c:194 generic_shutdown_super+0x130/0x2f0 fs/super.c:475 kill_block_super+0x70/0xdc fs/super.c:1427 deactivate_locked_super+0xb8/0x13c fs/super.c:335 deactivate_super+0xf8/0x118 fs/super.c:366 cleanup_mnt+0x3a4/0x458 fs/namespace.c:1139 __cleanup_mnt+0x20/0x30 fs/namespace.c:1146 task_work_run+0x12c/0x1e0 kernel/task_work.c:188 tracehook_notify_resume include/linux/tracehook.h:189 [inline] do_notify_resume+0x24b4/0x3128 arch/arm64/kernel/signal.c:949 prepare_exit_to_user_mode arch/arm64/kernel/entry-common.c:133 [inline] exit_to_user_mode arch/arm64/kernel/entry-common.c:138 [inline] el0_svc+0xf0/0x1e0 arch/arm64/kernel/entry-common.c:609 el0t_64_sync_handler+0xcc/0xe4 arch/arm64/kernel/entry-common.c:626 el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584 BUG: Bad page state in process syz-executor pfn:128099 page:00000000b62dc0d2 refcount:0 mapcount:0 mapping:0000000000000000 index:0x3 pfn:0x128099 flags: 0x5ffc00000002006(referenced|uptodate|private|node=0|zone=2|lastcpupid=0x7ff) raw: 05ffc00000002006 fffffc000321dd48 ffff80001f8575c0 0000000000000000 raw: 0000000000000003 ffff0000cb1266c8 00000000ffffffff 0000000000000000 page dumped because: PAGE_FLAGS_CHECK_AT_FREE flag(s) set Modules linked in: CPU: 1 PID: 4660 Comm: syz-executor Tainted: G B 5.15.189-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 Call trace: dump_backtrace+0x0/0x43c arch/arm64/kernel/stacktrace.c:152 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:216 __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:652 check_free_page_bad+0xf4/0x16c mm/page_alloc.c:1199 check_free_page mm/page_alloc.c:1209 [inline] free_pages_prepare mm/page_alloc.c:1334 [inline] free_pcp_prepare mm/page_alloc.c:1391 [inline] free_unref_page_prepare+0x744/0xaa0 mm/page_alloc.c:3317 free_unref_page_list+0xdc/0x754 mm/page_alloc.c:3433 release_pages+0x13c8/0x16e0 mm/swap.c:963 __pagevec_release+0x84/0xf8 mm/swap.c:983 pagevec_release include/linux/pagevec.h:81 [inline] truncate_inode_pages_range+0x29c/0x9b8 mm/truncate.c:329 truncate_inode_pages+0x2c/0x3c mm/truncate.c:425 dbUnmount+0xf4/0x168 fs/jfs/jfs_dmap.c:264 jfs_umount+0x1c4/0x328 fs/jfs/jfs_umount.c:89 jfs_put_super+0x90/0x188 fs/jfs/super.c:194 generic_shutdown_super+0x130/0x2f0 fs/super.c:475 kill_block_super+0x70/0xdc fs/super.c:1427 deactivate_locked_super+0xb8/0x13c fs/super.c:335 deactivate_super+0xf8/0x118 fs/super.c:366 cleanup_mnt+0x3a4/0x458 fs/namespace.c:1139 __cleanup_mnt+0x20/0x30 fs/namespace.c:1146 task_work_run+0x12c/0x1e0 kernel/task_work.c:188 tracehook_notify_resume include/linux/tracehook.h:189 [inline] do_notify_resume+0x24b4/0x3128 arch/arm64/kernel/signal.c:949 prepare_exit_to_user_mode arch/arm64/kernel/entry-common.c:133 [inline] exit_to_user_mode arch/arm64/kernel/entry-common.c:138 [inline] el0_svc+0xf0/0x1e0 arch/arm64/kernel/entry-common.c:609 el0t_64_sync_handler+0xcc/0xe4 arch/arm64/kernel/entry-common.c:626 el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584 BUG: Bad page state in process syz-executor pfn:116604 page:00000000db495525 refcount:0 mapcount:0 mapping:0000000000000000 index:0x4 pfn:0x116604 flags: 0x5ffc00000002006(referenced|uptodate|private|node=0|zone=2|lastcpupid=0x7ff) raw: 05ffc00000002006 fffffc00033ba148 ffff80001f8575c0 0000000000000000 raw: 0000000000000004 ffff0000cd16d7c0 00000000ffffffff 0000000000000000 page dumped because: PAGE_FLAGS_CHECK_AT_FREE flag(s) set Modules linked in: CPU: 0 PID: 4660 Comm: syz-executor Tainted: G B 5.15.189-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 Call trace: dump_backtrace+0x0/0x43c arch/arm64/kernel/stacktrace.c:152 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:216 __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:652 check_free_page_bad+0xf4/0x16c mm/page_alloc.c:1199 check_free_page mm/page_alloc.c:1209 [inline] free_pages_prepare mm/page_alloc.c:1334 [inline] free_pcp_prepare mm/page_alloc.c:1391 [inline] free_unref_page_prepare+0x744/0xaa0 mm/page_alloc.c:3317 free_unref_page_list+0xdc/0x754 mm/page_alloc.c:3433 release_pages+0x13c8/0x16e0 mm/swap.c:963 __pagevec_release+0x84/0xf8 mm/swap.c:983 pagevec_release include/linux/pagevec.h:81 [inline] truncate_inode_pages_range+0x29c/0x9b8 mm/truncate.c:329 truncate_inode_pages+0x2c/0x3c mm/truncate.c:425 dbUnmount+0xf4/0x168 fs/jfs/jfs_dmap.c:264 jfs_umount+0x1c4/0x328 fs/jfs/jfs_umount.c:89 jfs_put_super+0x90/0x188 fs/jfs/super.c:194 generic_shutdown_super+0x130/0x2f0 fs/super.c:475 kill_block_super+0x70/0xdc fs/super.c:1427 deactivate_locked_super+0xb8/0x13c fs/super.c:335 deactivate_super+0xf8/0x118 fs/super.c:366 cleanup_mnt+0x3a4/0x458 fs/namespace.c:1139 __cleanup_mnt+0x20/0x30 fs/namespace.c:1146 task_work_run+0x12c/0x1e0 kernel/task_work.c:188 tracehook_notify_resume include/linux/tracehook.h:189 [inline] do_notify_resume+0x24b4/0x3128 arch/arm64/kernel/signal.c:949 prepare_exit_to_user_mode arch/arm64/kernel/entry-common.c:133 [inline] exit_to_user_mode arch/arm64/kernel/entry-common.c:138 [inline] el0_svc+0xf0/0x1e0 arch/arm64/kernel/entry-common.c:609 el0t_64_sync_handler+0xcc/0xe4 arch/arm64/kernel/entry-common.c:626 el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584 BUG: Bad page state in process syz-executor pfn:10ee85 page:00000000b84a4933 refcount:0 mapcount:0 mapping:0000000000000000 index:0x3 pfn:0x10ee85 flags: 0x5ffc00000002006(referenced|uptodate|private|node=0|zone=2|lastcpupid=0x7ff) raw: 05ffc00000002006 fffffc0003211408 ffff80001f8575c0 0000000000000000 raw: 0000000000000003 ffff0000cd16d8b8 00000000ffffffff 0000000000000000 page dumped because: PAGE_FLAGS_CHECK_AT_FREE flag(s) set Modules linked in: CPU: 0 PID: 4660 Comm: syz-executor Tainted: G B 5.15.189-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 Call trace: dump_backtrace+0x0/0x43c arch/arm64/kernel/stacktrace.c:152 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:216 __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:652 check_free_page_bad+0xf4/0x16c mm/page_alloc.c:1199 check_free_page mm/page_alloc.c:1209 [inline] free_pages_prepare mm/page_alloc.c:1334 [inline] free_pcp_prepare mm/page_alloc.c:1391 [inline] free_unref_page_prepare+0x744/0xaa0 mm/page_alloc.c:3317 free_unref_page_list+0xdc/0x754 mm/page_alloc.c:3433 release_pages+0x13c8/0x16e0 mm/swap.c:963 __pagevec_release+0x84/0xf8 mm/swap.c:983 pagevec_release include/linux/pagevec.h:81 [inline] truncate_inode_pages_range+0x29c/0x9b8 mm/truncate.c:329 truncate_inode_pages+0x2c/0x3c mm/truncate.c:425 dbUnmount+0xf4/0x168 fs/jfs/jfs_dmap.c:264 jfs_umount+0x1c4/0x328 fs/jfs/jfs_umount.c:89 jfs_put_super+0x90/0x188 fs/jfs/super.c:194 generic_shutdown_super+0x130/0x2f0 fs/super.c:475 kill_block_super+0x70/0xdc fs/super.c:1427 deactivate_locked_super+0xb8/0x13c fs/super.c:335 deactivate_super+0xf8/0x118 fs/super.c:366 cleanup_mnt+0x3a4/0x458 fs/namespace.c:1139 __cleanup_mnt+0x20/0x30 fs/namespace.c:1146 task_work_run+0x12c/0x1e0 kernel/task_work.c:188 tracehook_notify_resume include/linux/tracehook.h:189 [inline] do_notify_resume+0x24b4/0x3128 arch/arm64/kernel/signal.c:949 prepare_exit_to_user_mode arch/arm64/kernel/entry-common.c:133 [inline] exit_to_user_mode arch/arm64/kernel/entry-common.c:138 [inline] el0_svc+0xf0/0x1e0 arch/arm64/kernel/entry-common.c:609 el0t_64_sync_handler+0xcc/0xe4 arch/arm64/kernel/entry-common.c:626 el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584 BUG: Bad page state in process syz-executor pfn:12d034 page:000000008fb04ad8 refcount:0 mapcount:0 mapping:0000000000000000 index:0x4 pfn:0x12d034 flags: 0x5ffc00000002006(referenced|uptodate|private|node=0|zone=2|lastcpupid=0x7ff) raw: 05ffc00000002006 fffffc0003b42988 ffff80001f8575c0 0000000000000000 raw: 0000000000000004 ffff0000cdfbc9b0 00000000ffffffff 0000000000000000 page dumped because: PAGE_FLAGS_CHECK_AT_FREE flag(s) set Modules linked in: CPU: 0 PID: 4660 Comm: syz-executor Tainted: G B 5.15.189-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 Call trace: dump_backtrace+0x0/0x43c arch/arm64/kernel/stacktrace.c:152 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:216 __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:652 check_free_page_bad+0xf4/0x16c mm/page_alloc.c:1199 check_free_page mm/page_alloc.c:1209 [inline] free_pages_prepare mm/page_alloc.c:1334 [inline] free_pcp_prepare mm/page_alloc.c:1391 [inline] free_unref_page_prepare+0x744/0xaa0 mm/page_alloc.c:3317 free_unref_page_list+0xdc/0x754 mm/page_alloc.c:3433 release_pages+0x13c8/0x16e0 mm/swap.c:963 __pagevec_release+0x84/0xf8 mm/swap.c:983 pagevec_release include/linux/pagevec.h:81 [inline] truncate_inode_pages_range+0x29c/0x9b8 mm/truncate.c:329 truncate_inode_pages+0x2c/0x3c mm/truncate.c:425 dbUnmount+0xf4/0x168 fs/jfs/jfs_dmap.c:264 jfs_umount+0x1c4/0x328 fs/jfs/jfs_umount.c:89 jfs_put_super+0x90/0x188 fs/jfs/super.c:194 generic_shutdown_super+0x130/0x2f0 fs/super.c:475 kill_block_super+0x70/0xdc fs/super.c:1427 deactivate_locked_super+0xb8/0x13c fs/super.c:335 deactivate_super+0xf8/0x118 fs/super.c:366 cleanup_mnt+0x3a4/0x458 fs/namespace.c:1139 __cleanup_mnt+0x20/0x30 fs/namespace.c:1146 task_work_run+0x12c/0x1e0 kernel/task_work.c:188 tracehook_notify_resume include/linux/tracehook.h:189 [inline] do_notify_resume+0x24b4/0x3128 arch/arm64/kernel/signal.c:949 prepare_exit_to_user_mode arch/arm64/kernel/entry-common.c:133 [inline] exit_to_user_mode arch/arm64/kernel/entry-common.c:138 [inline] el0_svc+0xf0/0x1e0 arch/arm64/kernel/entry-common.c:609 el0t_64_sync_handler+0xcc/0xe4 arch/arm64/kernel/entry-common.c:626 el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584 BUG: Bad page state in process syz-executor pfn:12d0a6 page:0000000081b8e45a refcount:0 mapcount:0 mapping:0000000000000000 index:0x3 pfn:0x12d0a6 flags: 0x5ffc00000002006(referenced|uptodate|private|node=0|zone=2|lastcpupid=0x7ff) raw: 05ffc00000002006 fffffc00035b82c8 ffff80001f8575c0 0000000000000000 raw: 0000000000000003 ffff0000cdfbcaa8 00000000ffffffff 0000000000000000 page dumped because: PAGE_FLAGS_CHECK_AT_FREE flag(s) set Modules linked in: CPU: 0 PID: 4660 Comm: syz-executor Tainted: G B 5.15.189-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 Call trace: dump_backtrace+0x0/0x43c arch/arm64/kernel/stacktrace.c:152 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:216 __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:652 check_free_page_bad+0xf4/0x16c mm/page_alloc.c:1199 check_free_page mm/page_alloc.c:1209 [inline] free_pages_prepare mm/page_alloc.c:1334 [inline] free_pcp_prepare mm/page_alloc.c:1391 [inline] free_unref_page_prepare+0x744/0xaa0 mm/page_alloc.c:3317 free_unref_page_list+0xdc/0x754 mm/page_alloc.c:3433 release_pages+0x13c8/0x16e0 mm/swap.c:963 __pagevec_release+0x84/0xf8 mm/swap.c:983 pagevec_release include/linux/pagevec.h:81 [inline] truncate_inode_pages_range+0x29c/0x9b8 mm/truncate.c:329 truncate_inode_pages+0x2c/0x3c mm/truncate.c:425 dbUnmount+0xf4/0x168 fs/jfs/jfs_dmap.c:264 jfs_umount+0x1c4/0x328 fs/jfs/jfs_umount.c:89 jfs_put_super+0x90/0x188 fs/jfs/super.c:194 generic_shutdown_super+0x130/0x2f0 fs/super.c:475 kill_block_super+0x70/0xdc fs/super.c:1427 deactivate_locked_super+0xb8/0x13c fs/super.c:335 deactivate_super+0xf8/0x118 fs/super.c:366 cleanup_mnt+0x3a4/0x458 fs/namespace.c:1139 __cleanup_mnt+0x20/0x30 fs/namespace.c:1146 task_work_run+0x12c/0x1e0 kernel/task_work.c:188 tracehook_notify_resume include/linux/tracehook.h:189 [inline] do_notify_resume+0x24b4/0x3128 arch/arm64/kernel/signal.c:949 prepare_exit_to_user_mode arch/arm64/kernel/entry-common.c:133 [inline] exit_to_user_mode arch/arm64/kernel/entry-common.c:138 [inline] el0_svc+0xf0/0x1e0 arch/arm64/kernel/entry-common.c:609 el0t_64_sync_handler+0xcc/0xe4 arch/arm64/kernel/entry-common.c:626 el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584 BUG: Bad page state in process syz-executor pfn:12d170 page:00000000390e3af0 refcount:0 mapcount:0 mapping:0000000000000000 index:0x4 pfn:0x12d170 flags: 0x5ffc00000002006(referenced|uptodate|private|node=0|zone=2|lastcpupid=0x7ff) raw: 05ffc00000002006 fffffc0003b45c48 ffff80001f8575c0 0000000000000000 raw: 0000000000000004 ffff0000d21885d0 00000000ffffffff 0000000000000000 page dumped because: PAGE_FLAGS_CHECK_AT_FREE flag(s) set Modules linked in: CPU: 0 PID: 4660 Comm: syz-executor Tainted: G B 5.15.189-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 Call trace: dump_backtrace+0x0/0x43c arch/arm64/kernel/stacktrace.c:152 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:216 __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:652 check_free_page_bad+0xf4/0x16c mm/page_alloc.c:1199 check_free_page mm/page_alloc.c:1209 [inline] free_pages_prepare mm/page_alloc.c:1334 [inline] free_pcp_prepare mm/page_alloc.c:1391 [inline] free_unref_page_prepare+0x744/0xaa0 mm/page_alloc.c:3317 free_unref_page_list+0xdc/0x754 mm/page_alloc.c:3433 release_pages+0x13c8/0x16e0 mm/swap.c:963 __pagevec_release+0x84/0xf8 mm/swap.c:983 pagevec_release include/linux/pagevec.h:81 [inline] truncate_inode_pages_range+0x29c/0x9b8 mm/truncate.c:329 truncate_inode_pages+0x2c/0x3c mm/truncate.c:425 dbUnmount+0xf4/0x168 fs/jfs/jfs_dmap.c:264 jfs_umount+0x1c4/0x328 fs/jfs/jfs_umount.c:89 jfs_put_super+0x90/0x188 fs/jfs/super.c:194 generic_shutdown_super+0x130/0x2f0 fs/super.c:475 kill_block_super+0x70/0xdc fs/super.c:1427 deactivate_locked_super+0xb8/0x13c fs/super.c:335 deactivate_super+0xf8/0x118 fs/super.c:366 cleanup_mnt+0x3a4/0x458 fs/namespace.c:1139 __cleanup_mnt+0x20/0x30 fs/namespace.c:1146 task_work_run+0x12c/0x1e0 kernel/task_work.c:188 tracehook_notify_resume include/linux/tracehook.h:189 [inline] do_notify_resume+0x24b4/0x3128 arch/arm64/kernel/signal.c:949 prepare_exit_to_user_mode arch/arm64/kernel/entry-common.c:133 [inline] exit_to_user_mode arch/arm64/kernel/entry-common.c:138 [inline] el0_svc+0xf0/0x1e0 arch/arm64/kernel/entry-common.c:609 el0t_64_sync_handler+0xcc/0xe4 arch/arm64/kernel/entry-common.c:626 el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584 BUG: Bad page state in process syz-executor pfn:12d171 page:00000000024ad3a5 refcount:0 mapcount:0 mapping:0000000000000000 index:0x3 pfn:0x12d171 flags: 0x5ffc00000002006(referenced|uptodate|private|node=0|zone=2|lastcpupid=0x7ff) raw: 05ffc00000002006 fffffc000372d748 ffff80001f8575c0 0000000000000000 raw: 0000000000000003 ffff0000d21886c8 00000000ffffffff 0000000000000000 page dumped because: PAGE_FLAGS_CHECK_AT_FREE flag(s) set Modules linked in: CPU: 0 PID: 4660 Comm: syz-executor Tainted: G B 5.15.189-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 Call trace: dump_backtrace+0x0/0x43c arch/arm64/kernel/stacktrace.c:152 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:216 __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:652 check_free_page_bad+0xf4/0x16c mm/page_alloc.c:1199 check_free_page mm/page_alloc.c:1209 [inline] free_pages_prepare mm/page_alloc.c:1334 [inline] free_pcp_prepare mm/page_alloc.c:1391 [inline] free_unref_page_prepare+0x744/0xaa0 mm/page_alloc.c:3317 free_unref_page_list+0xdc/0x754 mm/page_alloc.c:3433 release_pages+0x13c8/0x16e0 mm/swap.c:963 __pagevec_release+0x84/0xf8 mm/swap.c:983 pagevec_release include/linux/pagevec.h:81 [inline] truncate_inode_pages_range+0x29c/0x9b8 mm/truncate.c:329 truncate_inode_pages+0x2c/0x3c mm/truncate.c:425 dbUnmount+0xf4/0x168 fs/jfs/jfs_dmap.c:264 jfs_umount+0x1c4/0x328 fs/jfs/jfs_umount.c:89 jfs_put_super+0x90/0x188 fs/jfs/super.c:194 generic_shutdown_super+0x130/0x2f0 fs/super.c:475 kill_block_super+0x70/0xdc fs/super.c:1427 deactivate_locked_super+0xb8/0x13c fs/super.c:335 deactivate_super+0xf8/0x118 fs/super.c:366 cleanup_mnt+0x3a4/0x458 fs/namespace.c:1139 __cleanup_mnt+0x20/0x30 fs/namespace.c:1146 task_work_run+0x12c/0x1e0 kernel/task_work.c:188 tracehook_notify_resume include/linux/tracehook.h:189 [inline] do_notify_resume+0x24b4/0x3128 arch/arm64/kernel/signal.c:949 prepare_exit_to_user_mode arch/arm64/kernel/entry-common.c:133 [inline] exit_to_user_mode arch/arm64/kernel/entry-common.c:138 [inline] el0_svc+0xf0/0x1e0 arch/arm64/kernel/entry-common.c:609 el0t_64_sync_handler+0xcc/0xe4 arch/arm64/kernel/entry-common.c:626 el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584 BUG: Bad page state in process syz-executor pfn:1284d6 page:00000000d5b932ff refcount:0 mapcount:0 mapping:0000000000000000 index:0x4 pfn:0x1284d6 flags: 0x5ffc00000002006(referenced|uptodate|private|node=0|zone=2|lastcpupid=0x7ff) raw: 05ffc00000002006 fffffc0003a13748 ffff80001f8575c0 0000000000000000 raw: 0000000000000004 ffff0000cab287c0 00000000ffffffff 0000000000000000 page dumped because: PAGE_FLAGS_CHECK_AT_FREE flag(s) set Modules linked in: CPU: 0 PID: 4660 Comm: syz-executor Tainted: G B 5.15.189-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 Call trace: dump_backtrace+0x0/0x43c arch/arm64/kernel/stacktrace.c:152 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:216 __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:652 check_free_page_bad+0xf4/0x16c mm/page_alloc.c:1199 check_free_page mm/page_alloc.c:1209 [inline] free_pages_prepare mm/page_alloc.c:1334 [inline] free_pcp_prepare mm/page_alloc.c:1391 [inline] free_unref_page_prepare+0x744/0xaa0 mm/page_alloc.c:3317 free_unref_page_list+0xdc/0x754 mm/page_alloc.c:3433 release_pages+0x13c8/0x16e0 mm/swap.c:963 __pagevec_release+0x84/0xf8 mm/swap.c:983 pagevec_release include/linux/pagevec.h:81 [inline] truncate_inode_pages_range+0x29c/0x9b8 mm/truncate.c:329 truncate_inode_pages+0x2c/0x3c mm/truncate.c:425 dbUnmount+0xf4/0x168 fs/jfs/jfs_dmap.c:264 jfs_umount+0x1c4/0x328 fs/jfs/jfs_umount.c:89 jfs_put_super+0x90/0x188 fs/jfs/super.c:194 generic_shutdown_super+0x130/0x2f0 fs/super.c:475 kill_block_super+0x70/0xdc fs/super.c:1427 deactivate_locked_super+0xb8/0x13c fs/super.c:335 deactivate_super+0xf8/0x118 fs/super.c:366 cleanup_mnt+0x3a4/0x458 fs/namespace.c:1139 __cleanup_mnt+0x20/0x30 fs/namespace.c:1146 task_work_run+0x12c/0x1e0 kernel/task_work.c:188 tracehook_notify_resume include/linux/tracehook.h:189 [inline] do_notify_resume+0x24b4/0x3128 arch/arm64/kernel/signal.c:949 prepare_exit_to_user_mode arch/arm64/kernel/entry-common.c:133 [inline] exit_to_user_mode arch/arm64/kernel/entry-common.c:138 [inline] el0_svc+0xf0/0x1e0 arch/arm64/kernel/entry-common.c:609 el0t_64_sync_handler+0xcc/0xe4 arch/arm64/kernel/entry-common.c:626 el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584 BUG: Bad page state in process syz-executor pfn:1284dd page:00000000bf2bfaa4 refcount:0 mapcount:0 mapping:0000000000000000 index:0x3 pfn:0x1284dd flags: 0x5ffc00000002006(referenced|uptodate|private|node=0|zone=2|lastcpupid=0x7ff) raw: 05ffc00000002006 fffffc000349d288 ffff80001f8575c0 0000000000000000 raw: 0000000000000003 ffff0000cab288b8 00000000ffffffff 0000000000000000 page dumped because: PAGE_FLAGS_CHECK_AT_FREE flag(s) set Modules linked in: CPU: 0 PID: 4660 Comm: syz-executor Tainted: G B 5.15.189-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 Call trace: dump_backtrace+0x0/0x43c arch/arm64/kernel/stacktrace.c:152 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:216 __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:652 check_free_page_bad+0xf4/0x16c mm/page_alloc.c:1199 check_free_page mm/page_alloc.c:1209 [inline] free_pages_prepare mm/page_alloc.c:1334 [inline] free_pcp_prepare mm/page_alloc.c:1391 [inline] free_unref_page_prepare+0x744/0xaa0 mm/page_alloc.c:3317 free_unref_page_list+0xdc/0x754 mm/page_alloc.c:3433 release_pages+0x13c8/0x16e0 mm/swap.c:963 __pagevec_release+0x84/0xf8 mm/swap.c:983 pagevec_release include/linux/pagevec.h:81 [inline] truncate_inode_pages_range+0x29c/0x9b8 mm/truncate.c:329 truncate_inode_pages+0x2c/0x3c mm/truncate.c:425 dbUnmount+0xf4/0x168 fs/jfs/jfs_dmap.c:264 jfs_umount+0x1c4/0x328 fs/jfs/jfs_umount.c:89 jfs_put_super+0x90/0x188 fs/jfs/super.c:194 generic_shutdown_super+0x130/0x2f0 fs/super.c:475 kill_block_super+0x70/0xdc fs/super.c:1427 deactivate_locked_super+0xb8/0x13c fs/super.c:335 deactivate_super+0xf8/0x118 fs/super.c:366 cleanup_mnt+0x3a4/0x458 fs/namespace.c:1139 __cleanup_mnt+0x20/0x30 fs/namespace.c:1146 task_work_run+0x12c/0x1e0 kernel/task_work.c:188 tracehook_notify_resume include/linux/tracehook.h:189 [inline] do_notify_resume+0x24b4/0x3128 arch/arm64/kernel/signal.c:949 prepare_exit_to_user_mode arch/arm64/kernel/entry-common.c:133 [inline] exit_to_user_mode arch/arm64/kernel/entry-common.c:138 [inline] el0_svc+0xf0/0x1e0 arch/arm64/kernel/entry-common.c:609 el0t_64_sync_handler+0xcc/0xe4 arch/arm64/kernel/entry-common.c:626 el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584 BUG: Bad page state in process syz-executor pfn:12d37b page:00000000146569ca refcount:0 mapcount:0 mapping:0000000000000000 index:0x4 pfn:0x12d37b flags: 0x5ffc00000002006(referenced|uptodate|private|node=0|zone=2|lastcpupid=0x7ff) raw: 05ffc00000002006 fffffc00034ea188 ffff80001f8575c0 0000000000000000 raw: 0000000000000004 ffff0000db8189b0 00000000ffffffff 0000000000000000 page dumped because: PAGE_FLAGS_CHECK_AT_FREE flag(s) set Modules linked in: CPU: 0 PID: 4660 Comm: syz-executor Tainted: G B 5.15.189-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 Call trace: dump_backtrace+0x0/0x43c arch/arm64/kernel/stacktrace.c:152 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:216 __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:652 check_free_page_bad+0xf4/0x16c mm/page_alloc.c:1199 check_free_page mm/page_alloc.c:1209 [inline] free_pages_prepare mm/page_alloc.c:1334 [inline] free_pcp_prepare mm/page_alloc.c:1391 [inline] free_unref_page_prepare+0x744/0xaa0 mm/page_alloc.c:3317 free_unref_page_list+0xdc/0x754 mm/page_alloc.c:3433 release_pages+0x13c8/0x16e0 mm/swap.c:963 __pagevec_release+0x84/0xf8 mm/swap.c:983 pagevec_release include/linux/pagevec.h:81 [inline] truncate_inode_pages_range+0x29c/0x9b8 mm/truncate.c:329 truncate_inode_pages+0x2c/0x3c mm/truncate.c:425 dbUnmount+0xf4/0x168 fs/jfs/jfs_dmap.c:264 jfs_umount+0x1c4/0x328 fs/jfs/jfs_umount.c:89 jfs_put_super+0x90/0x188 fs/jfs/super.c:194 generic_shutdown_super+0x130/0x2f0 fs/super.c:475 kill_block_super+0x70/0xdc fs/super.c:1427 deactivate_locked_super+0xb8/0x13c fs/super.c:335 deactivate_super+0xf8/0x118 fs/super.c:366 cleanup_mnt+0x3a4/0x458 fs/namespace.c:1139 __cleanup_mnt+0x20/0x30 fs/namespace.c:1146 task_work_run+0x12c/0x1e0 kernel/task_work.c:188 tracehook_notify_resume include/linux/tracehook.h:189 [inline] do_notify_resume+0x24b4/0x3128 arch/arm64/kernel/signal.c:949 prepare_exit_to_user_mode arch/arm64/kernel/entry-common.c:133 [inline] exit_to_user_mode arch/arm64/kernel/entry-common.c:138 [inline] el0_svc+0xf0/0x1e0 arch/arm64/kernel/entry-common.c:609 el0t_64_sync_handler+0xcc/0xe4 arch/arm64/kernel/entry-common.c:626 el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584 BUG: Bad page state in process syz-executor pfn:113a86 page:000000003b67dfdc refcount:0 mapcount:0 mapping:0000000000000000 index:0x3 pfn:0x113a86 flags: 0x5ffc00000002006(referenced|uptodate|private|node=0|zone=2|lastcpupid=0x7ff) raw: 05ffc00000002006 fffffc00035b9e48 ffff80001f8575c0 0000000000000000 raw: 0000000000000003 ffff0000db818aa8 00000000ffffffff 0000000000000000 page dumped because: PAGE_FLAGS_CHECK_AT_FREE flag(s) set Modules linked in: CPU: 0 PID: 4660 Comm: syz-executor Tainted: G B 5.15.189-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 Call trace: dump_backtrace+0x0/0x43c arch/arm64/kernel/stacktrace.c:152 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:216 __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:652 check_free_page_bad+0xf4/0x16c mm/page_alloc.c:1199 check_free_page mm/page_alloc.c:1209 [inline] free_pages_prepare mm/page_alloc.c:1334 [inline] free_pcp_prepare mm/page_alloc.c:1391 [inline] free_unref_page_prepare+0x744/0xaa0 mm/page_alloc.c:3317 free_unref_page_list+0xdc/0x754 mm/page_alloc.c:3433 release_pages+0x13c8/0x16e0 mm/swap.c:963 __pagevec_release+0x84/0xf8 mm/swap.c:983 pagevec_release include/linux/pagevec.h:81 [inline] truncate_inode_pages_range+0x29c/0x9b8 mm/truncate.c:329 truncate_inode_pages+0x2c/0x3c mm/truncate.c:425 dbUnmount+0xf4/0x168 fs/jfs/jfs_dmap.c:264 jfs_umount+0x1c4/0x328 fs/jfs/jfs_umount.c:89 jfs_put_super+0x90/0x188 fs/jfs/super.c:194 generic_shutdown_super+0x130/0x2f0 fs/super.c:475 kill_block_super+0x70/0xdc fs/super.c:1427 deactivate_locked_super+0xb8/0x13c fs/super.c:335 deactivate_super+0xf8/0x118 fs/super.c:366 cleanup_mnt+0x3a4/0x458 fs/namespace.c:1139 __cleanup_mnt+0x20/0x30 fs/namespace.c:1146 task_work_run+0x12c/0x1e0 kernel/task_work.c:188 tracehook_notify_resume include/linux/tracehook.h:189 [inline] do_notify_resume+0x24b4/0x3128 arch/arm64/kernel/signal.c:949 prepare_exit_to_user_mode arch/arm64/kernel/entry-common.c:133 [inline] exit_to_user_mode arch/arm64/kernel/entry-common.c:138 [inline] el0_svc+0xf0/0x1e0 arch/arm64/kernel/entry-common.c:609 el0t_64_sync_handler+0xcc/0xe4 arch/arm64/kernel/entry-common.c:626 el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584 BUG: Bad page state in process syz-executor pfn:10effc page:00000000fc90c594 refcount:0 mapcount:0 mapping:0000000000000000 index:0x4 pfn:0x10effc flags: 0x5ffc00000002006(referenced|uptodate|private|node=0|zone=2|lastcpupid=0x7ff) raw: 05ffc00000002006 fffffc00032e1a08 ffff80001f8575c0 0000000000000000 raw: 0000000000000004 ffff0000c916aba0 00000000ffffffff 0000000000000000 page dumped because: PAGE_FLAGS_CHECK_AT_FREE flag(s) set Modules linked in: CPU: 1 PID: 4660 Comm: syz-executor Tainted: G B 5.15.189-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 Call trace: dump_backtrace+0x0/0x43c arch/arm64/kernel/stacktrace.c:152 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:216 __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:652 check_free_page_bad+0xf4/0x16c mm/page_alloc.c:1199 check_free_page mm/page_alloc.c:1209 [inline] free_pages_prepare mm/page_alloc.c:1334 [inline] free_pcp_prepare mm/page_alloc.c:1391 [inline] free_unref_page_prepare+0x744/0xaa0 mm/page_alloc.c:3317 free_unref_page_list+0xdc/0x754 mm/page_alloc.c:3433 release_pages+0x13c8/0x16e0 mm/swap.c:963 __pagevec_release+0x84/0xf8 mm/swap.c:983 pagevec_release include/linux/pagevec.h:81 [inline] truncate_inode_pages_range+0x29c/0x9b8 mm/truncate.c:329 truncate_inode_pages+0x2c/0x3c mm/truncate.c:425 dbUnmount+0xf4/0x168 fs/jfs/jfs_dmap.c:264 jfs_umount+0x1c4/0x328 fs/jfs/jfs_umount.c:89 jfs_put_super+0x90/0x188 fs/jfs/super.c:194 generic_shutdown_super+0x130/0x2f0 fs/super.c:475 kill_block_super+0x70/0xdc fs/super.c:1427 deactivate_locked_super+0xb8/0x13c fs/super.c:335 deactivate_super+0xf8/0x118 fs/super.c:366 cleanup_mnt+0x3a4/0x458 fs/namespace.c:1139 __cleanup_mnt+0x20/0x30 fs/namespace.c:1146 task_work_run+0x12c/0x1e0 kernel/task_work.c:188 tracehook_notify_resume include/linux/tracehook.h:189 [inline] do_notify_resume+0x24b4/0x3128 arch/arm64/kernel/signal.c:949 prepare_exit_to_user_mode arch/arm64/kernel/entry-common.c:133 [inline] exit_to_user_mode arch/arm64/kernel/entry-common.c:138 [inline] el0_svc+0xf0/0x1e0 arch/arm64/kernel/entry-common.c:609 el0t_64_sync_handler+0xcc/0xe4 arch/arm64/kernel/entry-common.c:626 el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584 BUG: Bad page state in process syz-executor pfn:10b868 page:000000008448095a refcount:0 mapcount:0 mapping:0000000000000000 index:0x3 pfn:0x10b868 flags: 0x5ffc00000002006(referenced|uptodate|private|node=0|zone=2|lastcpupid=0x7ff) raw: 05ffc00000002006 fffffc0003490708 ffff80001f8575c0 0000000000000000 raw: 0000000000000003 ffff0000c916ac98 00000000ffffffff 0000000000000000 page dumped because: PAGE_FLAGS_CHECK_AT_FREE flag(s) set Modules linked in: CPU: 0 PID: 4660 Comm: syz-executor Tainted: G B 5.15.189-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 Call trace: dump_backtrace+0x0/0x43c arch/arm64/kernel/stacktrace.c:152 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:216 __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:652 check_free_page_bad+0xf4/0x16c mm/page_alloc.c:1199 check_free_page mm/page_alloc.c:1209 [inline] free_pages_prepare mm/page_alloc.c:1334 [inline] free_pcp_prepare mm/page_alloc.c:1391 [inline] free_unref_page_prepare+0x744/0xaa0 mm/page_alloc.c:3317 free_unref_page_list+0xdc/0x754 mm/page_alloc.c:3433 release_pages+0x13c8/0x16e0 mm/swap.c:963 __pagevec_release+0x84/0xf8 mm/swap.c:983 pagevec_release include/linux/pagevec.h:81 [inline] truncate_inode_pages_range+0x29c/0x9b8 mm/truncate.c:329 truncate_inode_pages+0x2c/0x3c mm/truncate.c:425 dbUnmount+0xf4/0x168 fs/jfs/jfs_dmap.c:264 jfs_umount+0x1c4/0x328 fs/jfs/jfs_umount.c:89 jfs_put_super+0x90/0x188 fs/jfs/super.c:194 generic_shutdown_super+0x130/0x2f0 fs/super.c:475 kill_block_super+0x70/0xdc fs/super.c:1427 deactivate_locked_super+0xb8/0x13c fs/super.c:335 deactivate_super+0xf8/0x118 fs/super.c:366 cleanup_mnt+0x3a4/0x458 fs/namespace.c:1139 __cleanup_mnt+0x20/0x30 fs/namespace.c:1146 task_work_run+0x12c/0x1e0 kernel/task_work.c:188 tracehook_notify_resume include/linux/tracehook.h:189 [inline] do_notify_resume+0x24b4/0x3128 arch/arm64/kernel/signal.c:949 prepare_exit_to_user_mode arch/arm64/kernel/entry-common.c:133 [inline] exit_to_user_mode arch/arm64/kernel/entry-common.c:138 [inline] el0_svc+0xf0/0x1e0 arch/arm64/kernel/entry-common.c:609 el0t_64_sync_handler+0xcc/0xe4 arch/arm64/kernel/entry-common.c:626 el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584 BUG: Bad page state in process syz-executor pfn:10d83d page:000000002ae1b045 refcount:0 mapcount:0 mapping:0000000000000000 index:0x4 pfn:0x10d83d flags: 0x5ffc00000002006(referenced|uptodate|private|node=0|zone=2|lastcpupid=0x7ff) raw: 05ffc00000002006 fffffc00032437c8 ffff80001f8575c0 0000000000000000 raw: 0000000000000004 ffff0000cd12cba0 00000000ffffffff 0000000000000000 page dumped because: PAGE_FLAGS_CHECK_AT_FREE flag(s) set Modules linked in: CPU: 1 PID: 4660 Comm: syz-executor Tainted: G B 5.15.189-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 Call trace: dump_backtrace+0x0/0x43c arch/arm64/kernel/stacktrace.c:152 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:216 __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:652 check_free_page_bad+0xf4/0x16c mm/page_alloc.c:1199 check_free_page mm/page_alloc.c:1209 [inline] free_pages_prepare mm/page_alloc.c:1334 [inline] free_pcp_prepare mm/page_alloc.c:1391 [inline] free_unref_page_prepare+0x744/0xaa0 mm/page_alloc.c:3317 free_unref_page_list+0xdc/0x754 mm/page_alloc.c:3433 release_pages+0x13c8/0x16e0 mm/swap.c:963 __pagevec_release+0x84/0xf8 mm/swap.c:983 pagevec_release include/linux/pagevec.h:81 [inline] truncate_inode_pages_range+0x29c/0x9b8 mm/truncate.c:329 truncate_inode_pages+0x2c/0x3c mm/truncate.c:425 dbUnmount+0xf4/0x168 fs/jfs/jfs_dmap.c:264 jfs_umount+0x1c4/0x328 fs/jfs/jfs_umount.c:89 jfs_put_super+0x90/0x188 fs/jfs/super.c:194 generic_shutdown_super+0x130/0x2f0 fs/super.c:475 kill_block_super+0x70/0xdc fs/super.c:1427 deactivate_locked_super+0xb8/0x13c fs/super.c:335 deactivate_super+0xf8/0x118 fs/super.c:366 cleanup_mnt+0x3a4/0x458 fs/namespace.c:1139 __cleanup_mnt+0x20/0x30 fs/namespace.c:1146 task_work_run+0x12c/0x1e0 kernel/task_work.c:188 tracehook_notify_resume include/linux/tracehook.h:189 [inline] do_notify_resume+0x24b4/0x3128 arch/arm64/kernel/signal.c:949 prepare_exit_to_user_mode arch/arm64/kernel/entry-common.c:133 [inline] exit_to_user_mode arch/arm64/kernel/entry-common.c:138 [inline] el0_svc+0xf0/0x1e0 arch/arm64/kernel/entry-common.c:609 el0t_64_sync_handler+0xcc/0xe4 arch/arm64/kernel/entry-common.c:626 el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584 BUG: Bad page state in process syz-executor pfn:1090df page:000000008f5ffa6f refcount:0 mapcount:0 mapping:0000000000000000 index:0x3 pfn:0x1090df flags: 0x5ffc00000002006(referenced|uptodate|private|node=0|zone=2|lastcpupid=0x7ff) raw: 05ffc00000002006 fffffc0003275b08 ffff80001f8575c0 0000000000000000 raw: 0000000000000003 ffff0000cd12cc98 00000000ffffffff 0000000000000000 page dumped because: PAGE_FLAGS_CHECK_AT_FREE flag(s) set Modules linked in: CPU: 0 PID: 4660 Comm: syz-executor Tainted: G B 5.15.189-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 Call trace: dump_backtrace+0x0/0x43c arch/arm64/kernel/stacktrace.c:152 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:216 __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:652 check_free_page_bad+0xf4/0x16c mm/page_alloc.c:1199 check_free_page mm/page_alloc.c:1209 [inline] free_pages_prepare mm/page_alloc.c:1334 [inline] free_pcp_prepare mm/page_alloc.c:1391 [inline] free_unref_page_prepare+0x744/0xaa0 mm/page_alloc.c:3317 free_unref_page_list+0xdc/0x754 mm/page_alloc.c:3433 release_pages+0x13c8/0x16e0 mm/swap.c:963 __pagevec_release+0x84/0xf8 mm/swap.c:983 pagevec_release include/linux/pagevec.h:81 [inline] truncate_inode_pages_range+0x29c/0x9b8 mm/truncate.c:329 truncate_inode_pages+0x2c/0x3c mm/truncate.c:425 dbUnmount+0xf4/0x168 fs/jfs/jfs_dmap.c:264 jfs_umount+0x1c4/0x328 fs/jfs/jfs_umount.c:89 jfs_put_super+0x90/0x188 fs/jfs/super.c:194 generic_shutdown_super+0x130/0x2f0 fs/super.c:475 kill_block_super+0x70/0xdc fs/super.c:1427 deactivate_locked_super+0xb8/0x13c fs/super.c:335 deactivate_super+0xf8/0x118 fs/super.c:366 cleanup_mnt+0x3a4/0x458 fs/namespace.c:1139 __cleanup_mnt+0x20/0x30 fs/namespace.c:1146 task_work_run+0x12c/0x1e0 kernel/task_work.c:188 tracehook_notify_resume include/linux/tracehook.h:189 [inline] do_notify_resume+0x24b4/0x3128 arch/arm64/kernel/signal.c:949 prepare_exit_to_user_mode arch/arm64/kernel/entry-common.c:133 [inline] exit_to_user_mode arch/arm64/kernel/entry-common.c:138 [inline] el0_svc+0xf0/0x1e0 arch/arm64/kernel/entry-common.c:609 el0t_64_sync_handler+0xcc/0xe4 arch/arm64/kernel/entry-common.c:626 el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584 BUG: Bad page state in process syz-executor pfn:1123cf page:00000000cc4367bf refcount:0 mapcount:0 mapping:0000000000000000 index:0x4 pfn:0x1123cf flags: 0x5ffc00000002006(referenced|uptodate|private|node=0|zone=2|lastcpupid=0x7ff) raw: 05ffc00000002006 fffffc0003711248 ffff80001f8575c0 0000000000000000 raw: 0000000000000004 ffff0000c8f65d90 00000000ffffffff 0000000000000000 page dumped because: PAGE_FLAGS_CHECK_AT_FREE flag(s) set Modules linked in: CPU: 0 PID: 4660 Comm: syz-executor Tainted: G B 5.15.189-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 Call trace: dump_backtrace+0x0/0x43c arch/arm64/kernel/stacktrace.c:152 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:216 __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:652 check_free_page_bad+0xf4/0x16c mm/page_alloc.c:1199 check_free_page mm/page_alloc.c:1209 [inline] free_pages_prepare mm/page_alloc.c:1334 [inline] free_pcp_prepare mm/page_alloc.c:1391 [inline] free_unref_page_prepare+0x744/0xaa0 mm/page_alloc.c:3317 free_unref_page_list+0xdc/0x754 mm/page_alloc.c:3433 release_pages+0x13c8/0x16e0 mm/swap.c:963 __pagevec_release+0x84/0xf8 mm/swap.c:983 pagevec_release include/linux/pagevec.h:81 [inline] truncate_inode_pages_range+0x29c/0x9b8 mm/truncate.c:329 truncate_inode_pages+0x2c/0x3c mm/truncate.c:425 dbUnmount+0xf4/0x168 fs/jfs/jfs_dmap.c:264 jfs_umount+0x1c4/0x328 fs/jfs/jfs_umount.c:89 jfs_put_super+0x90/0x188 fs/jfs/super.c:194 generic_shutdown_super+0x130/0x2f0 fs/super.c:475 kill_block_super+0x70/0xdc fs/super.c:1427 deactivate_locked_super+0xb8/0x13c fs/super.c:335 deactivate_super+0xf8/0x118 fs/super.c:366 cleanup_mnt+0x3a4/0x458 fs/namespace.c:1139 __cleanup_mnt+0x20/0x30 fs/namespace.c:1146 task_work_run+0x12c/0x1e0 kernel/task_work.c:188 tracehook_notify_resume include/linux/tracehook.h:189 [inline] do_notify_resume+0x24b4/0x3128 arch/arm64/kernel/signal.c:949 prepare_exit_to_user_mode arch/arm64/kernel/entry-common.c:133 [inline] exit_to_user_mode arch/arm64/kernel/entry-common.c:138 [inline] el0_svc+0xf0/0x1e0 arch/arm64/kernel/entry-common.c:609 el0t_64_sync_handler+0xcc/0xe4 arch/arm64/kernel/entry-common.c:626 el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584 BUG: Bad page state in process syz-executor pfn:11c449 page:00000000d60733db refcount:0 mapcount:0 mapping:0000000000000000 index:0x3 pfn:0x11c449 flags: 0x5ffc00000002006(referenced|uptodate|private|node=0|zone=2|lastcpupid=0x7ff) raw: 05ffc00000002006 fffffc0003495a48 ffff80001f8575c0 0000000000000000 raw: 0000000000000003 ffff0000c8f65e88 00000000ffffffff 0000000000000000 page dumped because: PAGE_FLAGS_CHECK_AT_FREE flag(s) set Modules linked in: CPU: 0 PID: 4660 Comm: syz-executor Tainted: G B 5.15.189-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 Call trace: dump_backtrace+0x0/0x43c arch/arm64/kernel/stacktrace.c:152 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:216 __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:652 check_free_page_bad+0xf4/0x16c mm/page_alloc.c:1199 check_free_page mm/page_alloc.c:1209 [inline] free_pages_prepare mm/page_alloc.c:1334 [inline] free_pcp_prepare mm/page_alloc.c:1391 [inline] free_unref_page_prepare+0x744/0xaa0 mm/page_alloc.c:3317 free_unref_page_list+0xdc/0x754 mm/page_alloc.c:3433 release_pages+0x13c8/0x16e0 mm/swap.c:963 __pagevec_release+0x84/0xf8 mm/swap.c:983 pagevec_release include/linux/pagevec.h:81 [inline] truncate_inode_pages_range+0x29c/0x9b8 mm/truncate.c:329 truncate_inode_pages+0x2c/0x3c mm/truncate.c:425 dbUnmount+0xf4/0x168 fs/jfs/jfs_dmap.c:264 jfs_umount+0x1c4/0x328 fs/jfs/jfs_umount.c:89 jfs_put_super+0x90/0x188 fs/jfs/super.c:194 generic_shutdown_super+0x130/0x2f0 fs/super.c:475 kill_block_super+0x70/0xdc fs/super.c:1427 deactivate_locked_super+0xb8/0x13c fs/super.c:335 deactivate_super+0xf8/0x118 fs/super.c:366 cleanup_mnt+0x3a4/0x458 fs/namespace.c:1139 __cleanup_mnt+0x20/0x30 fs/namespace.c:1146 task_work_run+0x12c/0x1e0 kernel/task_work.c:188 tracehook_notify_resume include/linux/tracehook.h:189 [inline] do_notify_resume+0x24b4/0x3128 arch/arm64/kernel/signal.c:949 prepare_exit_to_user_mode arch/arm64/kernel/entry-common.c:133 [inline] exit_to_user_mode arch/arm64/kernel/entry-common.c:138 [inline] el0_svc+0xf0/0x1e0 arch/arm64/kernel/entry-common.c:609 el0t_64_sync_handler+0xcc/0xe4 arch/arm64/kernel/entry-common.c:626 el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584 BUG: Bad page state in process syz-executor pfn:12d068 page:0000000093cce02c refcount:0 mapcount:0 mapping:0000000000000000 index:0x4 pfn:0x12d068 flags: 0x5ffc00000002006(referenced|uptodate|private|node=0|zone=2|lastcpupid=0x7ff) raw: 05ffc00000002006 fffffc0003798508 ffff80001f8575c0 0000000000000000 raw: 0000000000000004 ffff0000d2d43000 00000000ffffffff 0000000000000000 page dumped because: PAGE_FLAGS_CHECK_AT_FREE flag(s) set Modules linked in: CPU: 0 PID: 4660 Comm: syz-executor Tainted: G B 5.15.189-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 Call trace: dump_backtrace+0x0/0x43c arch/arm64/kernel/stacktrace.c:152 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:216 __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:652 check_free_page_bad+0xf4/0x16c mm/page_alloc.c:1199 check_free_page mm/page_alloc.c:1209 [inline] free_pages_prepare mm/page_alloc.c:1334 [inline] free_pcp_prepare mm/page_alloc.c:1391 [inline] free_unref_page_prepare+0x744/0xaa0 mm/page_alloc.c:3317 free_unref_page_list+0xdc/0x754 mm/page_alloc.c:3433 release_pages+0x13c8/0x16e0 mm/swap.c:963 __pagevec_release+0x84/0xf8 mm/swap.c:983 pagevec_release include/linux/pagevec.h:81 [inline] truncate_inode_pages_range+0x29c/0x9b8 mm/truncate.c:329 truncate_inode_pages+0x2c/0x3c mm/truncate.c:425 dbUnmount+0xf4/0x168 fs/jfs/jfs_dmap.c:264 jfs_umount+0x1c4/0x328 fs/jfs/jfs_umount.c:89 jfs_put_super+0x90/0x188 fs/jfs/super.c:194 generic_shutdown_super+0x130/0x2f0 fs/super.c:475 kill_block_super+0x70/0xdc fs/super.c:1427 deactivate_locked_super+0xb8/0x13c fs/super.c:335 deactivate_super+0xf8/0x118 fs/super.c:366 cleanup_mnt+0x3a4/0x458 fs/namespace.c:1139 __cleanup_mnt+0x20/0x30 fs/namespace.c:1146 task_work_run+0x12c/0x1e0 kernel/task_work.c:188 tracehook_notify_resume include/linux/tracehook.h:189 [inline] do_notify_resume+0x24b4/0x3128 arch/arm64/kernel/signal.c:949 prepare_exit_to_user_mode arch/arm64/kernel/entry-common.c:133 [inline] exit_to_user_mode arch/arm64/kernel/entry-common.c:138 [inline] el0_svc+0xf0/0x1e0 arch/arm64/kernel/entry-common.c:609 el0t_64_sync_handler+0xcc/0xe4 arch/arm64/kernel/entry-common.c:626 el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584 BUG: Bad page state in process syz-executor pfn:11e614 page:0000000083795ce8 refcount:0 mapcount:0 mapping:0000000000000000 index:0x3 pfn:0x11e614 flags: 0x5ffc00000002006(referenced|uptodate|private|node=0|zone=2|lastcpupid=0x7ff) raw: 05ffc00000002006 fffffc0003a48108 ffff80001f8575c0 0000000000000000 raw: 0000000000000003 ffff0000d2d430f8 00000000ffffffff 0000000000000000 page dumped because: PAGE_FLAGS_CHECK_AT_FREE flag(s) set Modules linked in: CPU: 0 PID: 4660 Comm: syz-executor Tainted: G B 5.15.189-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 Call trace: dump_backtrace+0x0/0x43c arch/arm64/kernel/stacktrace.c:152 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:216 __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:652 check_free_page_bad+0xf4/0x16c mm/page_alloc.c:1199 check_free_page mm/page_alloc.c:1209 [inline] free_pages_prepare mm/page_alloc.c:1334 [inline] free_pcp_prepare mm/page_alloc.c:1391 [inline] free_unref_page_prepare+0x744/0xaa0 mm/page_alloc.c:3317 free_unref_page_list+0xdc/0x754 mm/page_alloc.c:3433 release_pages+0x13c8/0x16e0 mm/swap.c:963 __pagevec_release+0x84/0xf8 mm/swap.c:983 pagevec_release include/linux/pagevec.h:81 [inline] truncate_inode_pages_range+0x29c/0x9b8 mm/truncate.c:329 truncate_inode_pages+0x2c/0x3c mm/truncate.c:425 dbUnmount+0xf4/0x168 fs/jfs/jfs_dmap.c:264 jfs_umount+0x1c4/0x328 fs/jfs/jfs_umount.c:89 jfs_put_super+0x90/0x188 fs/jfs/super.c:194 generic_shutdown_super+0x130/0x2f0 fs/super.c:475 kill_block_super+0x70/0xdc fs/super.c:1427 deactivate_locked_super+0xb8/0x13c fs/super.c:335 deactivate_super+0xf8/0x118 fs/super.c:366 cleanup_mnt+0x3a4/0x458 fs/namespace.c:1139 __cleanup_mnt+0x20/0x30 fs/namespace.c:1146 task_work_run+0x12c/0x1e0 kernel/task_work.c:188 tracehook_notify_resume include/linux/tracehook.h:189 [inline] do_notify_resume+0x24b4/0x3128 arch/arm64/kernel/signal.c:949 prepare_exit_to_user_mode arch/arm64/kernel/entry-common.c:133 [inline] exit_to_user_mode arch/arm64/kernel/entry-common.c:138 [inline] el0_svc+0xf0/0x1e0 arch/arm64/kernel/entry-common.c:609 el0t_64_sync_handler+0xcc/0xe4 arch/arm64/kernel/entry-common.c:626 el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584 BUG: Bad page state in process syz-executor pfn:10ba3d page:0000000029d4014b refcount:0 mapcount:0 mapping:0000000000000000 index:0x4 pfn:0x10ba3d flags: 0x5ffc00000002006(referenced|uptodate|private|node=0|zone=2|lastcpupid=0x7ff) raw: 05ffc00000002006 fffffc00034f1c08 ffff80001f8575c0 0000000000000000 raw: 0000000000000004 ffff0000ca72bd90 00000000ffffffff 0000000000000000 page dumped because: PAGE_FLAGS_CHECK_AT_FREE flag(s) set Modules linked in: CPU: 1 PID: 4660 Comm: syz-executor Tainted: G B 5.15.189-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 Call trace: dump_backtrace+0x0/0x43c arch/arm64/kernel/stacktrace.c:152 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:216 __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:652 check_free_page_bad+0xf4/0x16c mm/page_alloc.c:1199 check_free_page mm/page_alloc.c:1209 [inline] free_pages_prepare mm/page_alloc.c:1334 [inline] free_pcp_prepare mm/page_alloc.c:1391 [inline] free_unref_page_prepare+0x744/0xaa0 mm/page_alloc.c:3317 free_unref_page_list+0xdc/0x754 mm/page_alloc.c:3433 release_pages+0x13c8/0x16e0 mm/swap.c:963 __pagevec_release+0x84/0xf8 mm/swap.c:983 pagevec_release include/linux/pagevec.h:81 [inline] truncate_inode_pages_range+0x29c/0x9b8 mm/truncate.c:329 truncate_inode_pages+0x2c/0x3c mm/truncate.c:425 dbUnmount+0xf4/0x168 fs/jfs/jfs_dmap.c:264 jfs_umount+0x1c4/0x328 fs/jfs/jfs_umount.c:89 jfs_put_super+0x90/0x188 fs/jfs/super.c:194 generic_shutdown_super+0x130/0x2f0 fs/super.c:475 kill_block_super+0x70/0xdc fs/super.c:1427 deactivate_locked_super+0xb8/0x13c fs/super.c:335 deactivate_super+0xf8/0x118 fs/super.c:366 cleanup_mnt+0x3a4/0x458 fs/namespace.c:1139 __cleanup_mnt+0x20/0x30 fs/namespace.c:1146 task_work_run+0x12c/0x1e0 kernel/task_work.c:188 tracehook_notify_resume include/linux/tracehook.h:189 [inline] do_notify_resume+0x24b4/0x3128 arch/arm64/kernel/signal.c:949 prepare_exit_to_user_mode arch/arm64/kernel/entry-common.c:133 [inline] exit_to_user_mode arch/arm64/kernel/entry-common.c:138 [inline] el0_svc+0xf0/0x1e0 arch/arm64/kernel/entry-common.c:609 el0t_64_sync_handler+0xcc/0xe4 arch/arm64/kernel/entry-common.c:626 el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584 BUG: Bad page state in process syz-executor pfn:113c70 page:00000000081ff0d4 refcount:0 mapcount:0 mapping:0000000000000000 index:0x3 pfn:0x113c70 flags: 0x5ffc00000002006(referenced|uptodate|private|node=0|zone=2|lastcpupid=0x7ff) raw: 05ffc00000002006 fffffc00033d4f88 ffff80001f8575c0 0000000000000000 raw: 0000000000000003 ffff0000ca72be88 00000000ffffffff 0000000000000000 page dumped because: PAGE_FLAGS_CHECK_AT_FREE flag(s) set Modules linked in: CPU: 1 PID: 4660 Comm: syz-executor Tainted: G B 5.15.189-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 Call trace: dump_backtrace+0x0/0x43c arch/arm64/kernel/stacktrace.c:152 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:216 __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:652 check_free_page_bad+0xf4/0x16c mm/page_alloc.c:1199 check_free_page mm/page_alloc.c:1209 [inline] free_pages_prepare mm/page_alloc.c:1334 [inline] free_pcp_prepare mm/page_alloc.c:1391 [inline] free_unref_page_prepare+0x744/0xaa0 mm/page_alloc.c:3317 free_unref_page_list+0xdc/0x754 mm/page_alloc.c:3433 release_pages+0x13c8/0x16e0 mm/swap.c:963 __pagevec_release+0x84/0xf8 mm/swap.c:983 pagevec_release include/linux/pagevec.h:81 [inline] truncate_inode_pages_range+0x29c/0x9b8 mm/truncate.c:329 truncate_inode_pages+0x2c/0x3c mm/truncate.c:425 dbUnmount+0xf4/0x168 fs/jfs/jfs_dmap.c:264 jfs_umount+0x1c4/0x328 fs/jfs/jfs_umount.c:89 jfs_put_super+0x90/0x188 fs/jfs/super.c:194 generic_shutdown_super+0x130/0x2f0 fs/super.c:475 kill_block_super+0x70/0xdc fs/super.c:1427 deactivate_locked_super+0xb8/0x13c fs/super.c:335 deactivate_super+0xf8/0x118 fs/super.c:366 cleanup_mnt+0x3a4/0x458 fs/namespace.c:1139 __cleanup_mnt+0x20/0x30 fs/namespace.c:1146 task_work_run+0x12c/0x1e0 kernel/task_work.c:188 tracehook_notify_resume include/linux/tracehook.h:189 [inline] do_notify_resume+0x24b4/0x3128 arch/arm64/kernel/signal.c:949 prepare_exit_to_user_mode arch/arm64/kernel/entry-common.c:133 [inline] exit_to_user_mode arch/arm64/kernel/entry-common.c:138 [inline] el0_svc+0xf0/0x1e0 arch/arm64/kernel/entry-common.c:609 el0t_64_sync_handler+0xcc/0xe4 arch/arm64/kernel/entry-common.c:626 el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584 BUG: Bad page state in process syz-executor pfn:108792 page:00000000ce509676 refcount:0 mapcount:0 mapping:0000000000000000 index:0x4 pfn:0x108792 flags: 0x5ffc00000002006(referenced|uptodate|private|node=0|zone=2|lastcpupid=0x7ff) raw: 05ffc00000002006 fffffc000379a748 ffff80001f8575c0 0000000000000000 raw: 0000000000000004 ffff0000dcb121f0 00000000ffffffff 0000000000000000 page dumped because: PAGE_FLAGS_CHECK_AT_FREE flag(s) set Modules linked in: CPU: 0 PID: 4660 Comm: syz-executor Tainted: G B 5.15.189-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 Call trace: dump_backtrace+0x0/0x43c arch/arm64/kernel/stacktrace.c:152 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:216 __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:652 check_free_page_bad+0xf4/0x16c mm/page_alloc.c:1199 check_free_page mm/page_alloc.c:1209 [inline] free_pages_prepare mm/page_alloc.c:1334 [inline] free_pcp_prepare mm/page_alloc.c:1391 [inline] free_unref_page_prepare+0x744/0xaa0 mm/page_alloc.c:3317 free_unref_page_list+0xdc/0x754 mm/page_alloc.c:3433 release_pages+0x13c8/0x16e0 mm/swap.c:963 __pagevec_release+0x84/0xf8 mm/swap.c:983 pagevec_release include/linux/pagevec.h:81 [inline] truncate_inode_pages_range+0x29c/0x9b8 mm/truncate.c:329 truncate_inode_pages+0x2c/0x3c mm/truncate.c:425 dbUnmount+0xf4/0x168 fs/jfs/jfs_dmap.c:264 jfs_umount+0x1c4/0x328 fs/jfs/jfs_umount.c:89 jfs_put_super+0x90/0x188 fs/jfs/super.c:194 generic_shutdown_super+0x130/0x2f0 fs/super.c:475 kill_block_super+0x70/0xdc fs/super.c:1427 deactivate_locked_super+0xb8/0x13c fs/super.c:335 deactivate_super+0xf8/0x118 fs/super.c:366 cleanup_mnt+0x3a4/0x458 fs/namespace.c:1139 __cleanup_mnt+0x20/0x30 fs/namespace.c:1146 task_work_run+0x12c/0x1e0 kernel/task_work.c:188 tracehook_notify_resume include/linux/tracehook.h:189 [inline] do_notify_resume+0x24b4/0x3128 arch/arm64/kernel/signal.c:949 prepare_exit_to_user_mode arch/arm64/kernel/entry-common.c:133 [inline] exit_to_user_mode arch/arm64/kernel/entry-common.c:138 [inline] el0_svc+0xf0/0x1e0 arch/arm64/kernel/entry-common.c:609 el0t_64_sync_handler+0xcc/0xe4 arch/arm64/kernel/entry-common.c:626 el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584 BUG: Bad page state in process syz-executor pfn:11e69d page:00000000e9827e59 refcount:0 mapcount:0 mapping:0000000000000000 index:0x3 pfn:0x11e69d flags: 0x5ffc00000002006(referenced|uptodate|private|node=0|zone=2|lastcpupid=0x7ff) raw: 05ffc00000002006 fffffc00035b8248 ffff80001f8575c0 0000000000000000 raw: 0000000000000003 ffff0000dcb122e8 00000000ffffffff 0000000000000000 page dumped because: PAGE_FLAGS_CHECK_AT_FREE flag(s) set Modules linked in: CPU: 0 PID: 4660 Comm: syz-executor Tainted: G B 5.15.189-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 Call trace: dump_backtrace+0x0/0x43c arch/arm64/kernel/stacktrace.c:152 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:216 __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:652 check_free_page_bad+0xf4/0x16c mm/page_alloc.c:1199 check_free_page mm/page_alloc.c:1209 [inline] free_pages_prepare mm/page_alloc.c:1334 [inline] free_pcp_prepare mm/page_alloc.c:1391 [inline] free_unref_page_prepare+0x744/0xaa0 mm/page_alloc.c:3317 free_unref_page_list+0xdc/0x754 mm/page_alloc.c:3433 release_pages+0x13c8/0x16e0 mm/swap.c:963 __pagevec_release+0x84/0xf8 mm/swap.c:983 pagevec_release include/linux/pagevec.h:81 [inline] truncate_inode_pages_range+0x29c/0x9b8 mm/truncate.c:329 truncate_inode_pages+0x2c/0x3c mm/truncate.c:425 dbUnmount+0xf4/0x168 fs/jfs/jfs_dmap.c:264 jfs_umount+0x1c4/0x328 fs/jfs/jfs_umount.c:89 jfs_put_super+0x90/0x188 fs/jfs/super.c:194 generic_shutdown_super+0x130/0x2f0 fs/super.c:475 kill_block_super+0x70/0xdc fs/super.c:1427 deactivate_locked_super+0xb8/0x13c fs/super.c:335 deactivate_super+0xf8/0x118 fs/super.c:366 cleanup_mnt+0x3a4/0x458 fs/namespace.c:1139 __cleanup_mnt+0x20/0x30 fs/namespace.c:1146 task_work_run+0x12c/0x1e0 kernel/task_work.c:188 tracehook_notify_resume include/linux/tracehook.h:189 [inline] do_notify_resume+0x24b4/0x3128 arch/arm64/kernel/signal.c:949 prepare_exit_to_user_mode arch/arm64/kernel/entry-common.c:133 [inline] exit_to_user_mode arch/arm64/kernel/entry-common.c:138 [inline] el0_svc+0xf0/0x1e0 arch/arm64/kernel/entry-common.c:609 el0t_64_sync_handler+0xcc/0xe4 arch/arm64/kernel/entry-common.c:626 el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584 BUG: Bad page state in process syz-executor pfn:10db27 page:000000005e293f73 refcount:0 mapcount:0 mapping:0000000000000000 index:0x4 pfn:0x10db27 flags: 0x5ffc00000002006(referenced|uptodate|private|node=0|zone=2|lastcpupid=0x7ff) raw: 05ffc00000002006 fffffc00032a65c8 ffff80001f8575c0 0000000000000000 raw: 0000000000000004 ffff0000d2fd93e0 00000000ffffffff 0000000000000000 page dumped because: PAGE_FLAGS_CHECK_AT_FREE flag(s) set Modules linked in: CPU: 0 PID: 4660 Comm: syz-executor Tainted: G B 5.15.189-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 Call trace: dump_backtrace+0x0/0x43c arch/arm64/kernel/stacktrace.c:152 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:216 __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:652 check_free_page_bad+0xf4/0x16c mm/page_alloc.c:1199 check_free_page mm/page_alloc.c:1209 [inline] free_pages_prepare mm/page_alloc.c:1334 [inline] free_pcp_prepare mm/page_alloc.c:1391 [inline] free_unref_page_prepare+0x744/0xaa0 mm/page_alloc.c:3317 free_unref_page_list+0xdc/0x754 mm/page_alloc.c:3433 release_pages+0x13c8/0x16e0 mm/swap.c:963 __pagevec_release+0x84/0xf8 mm/swap.c:983 pagevec_release include/linux/pagevec.h:81 [inline] truncate_inode_pages_range+0x29c/0x9b8 mm/truncate.c:329 truncate_inode_pages+0x2c/0x3c mm/truncate.c:425 dbUnmount+0xf4/0x168 fs/jfs/jfs_dmap.c:264 jfs_umount+0x1c4/0x328 fs/jfs/jfs_umount.c:89 jfs_put_super+0x90/0x188 fs/jfs/super.c:194 generic_shutdown_super+0x130/0x2f0 fs/super.c:475 kill_block_super+0x70/0xdc fs/super.c:1427 deactivate_locked_super+0xb8/0x13c fs/super.c:335 deactivate_super+0xf8/0x118 fs/super.c:366 cleanup_mnt+0x3a4/0x458 fs/namespace.c:1139 __cleanup_mnt+0x20/0x30 fs/namespace.c:1146 task_work_run+0x12c/0x1e0 kernel/task_work.c:188 tracehook_notify_resume include/linux/tracehook.h:189 [inline] do_notify_resume+0x24b4/0x3128 arch/arm64/kernel/signal.c:949 prepare_exit_to_user_mode arch/arm64/kernel/entry-common.c:133 [inline] exit_to_user_mode arch/arm64/kernel/entry-common.c:138 [inline] el0_svc+0xf0/0x1e0 arch/arm64/kernel/entry-common.c:609 el0t_64_sync_handler+0xcc/0xe4 arch/arm64/kernel/entry-common.c:626 el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584 BUG: Bad page state in process syz-executor pfn:10a997 page:00000000a5251f71 refcount:0 mapcount:0 mapping:0000000000000000 index:0x3 pfn:0x10a997 flags: 0x5ffc00000002006(referenced|uptodate|private|node=0|zone=2|lastcpupid=0x7ff) raw: 05ffc00000002006 fffffc000349a408 ffff80001f8575c0 0000000000000000 raw: 0000000000000003 ffff0000d2fd94d8 00000000ffffffff 0000000000000000 page dumped because: PAGE_FLAGS_CHECK_AT_FREE flag(s) set Modules linked in: CPU: 0 PID: 4660 Comm: syz-executor Tainted: G B 5.15.189-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 Call trace: dump_backtrace+0x0/0x43c arch/arm64/kernel/stacktrace.c:152 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:216 __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:652 check_free_page_bad+0xf4/0x16c mm/page_alloc.c:1199 check_free_page mm/page_alloc.c:1209 [inline] free_pages_prepare mm/page_alloc.c:1334 [inline] free_pcp_prepare mm/page_alloc.c:1391 [inline] free_unref_page_prepare+0x744/0xaa0 mm/page_alloc.c:3317 free_unref_page_list+0xdc/0x754 mm/page_alloc.c:3433 release_pages+0x13c8/0x16e0 mm/swap.c:963 __pagevec_release+0x84/0xf8 mm/swap.c:983 pagevec_release include/linux/pagevec.h:81 [inline] truncate_inode_pages_range+0x29c/0x9b8 mm/truncate.c:329 truncate_inode_pages+0x2c/0x3c mm/truncate.c:425 dbUnmount+0xf4/0x168 fs/jfs/jfs_dmap.c:264 jfs_umount+0x1c4/0x328 fs/jfs/jfs_umount.c:89 jfs_put_super+0x90/0x188 fs/jfs/super.c:194 generic_shutdown_super+0x130/0x2f0 fs/super.c:475 kill_block_super+0x70/0xdc fs/super.c:1427 deactivate_locked_super+0xb8/0x13c fs/super.c:335 deactivate_super+0xf8/0x118 fs/super.c:366 cleanup_mnt+0x3a4/0x458 fs/namespace.c:1139 __cleanup_mnt+0x20/0x30 fs/namespace.c:1146 task_work_run+0x12c/0x1e0 kernel/task_work.c:188 tracehook_notify_resume include/linux/tracehook.h:189 [inline] do_notify_resume+0x24b4/0x3128 arch/arm64/kernel/signal.c:949 prepare_exit_to_user_mode arch/arm64/kernel/entry-common.c:133 [inline] exit_to_user_mode arch/arm64/kernel/entry-common.c:138 [inline] el0_svc+0xf0/0x1e0 arch/arm64/kernel/entry-common.c:609 el0t_64_sync_handler+0xcc/0xe4 arch/arm64/kernel/entry-common.c:626 el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584 BUG: Bad page state in process syz-executor pfn:112e12 page:00000000e7917d48 refcount:0 mapcount:0 mapping:0000000000000000 index:0x4 pfn:0x112e12 flags: 0x5ffc00000002006(referenced|uptodate|private|node=0|zone=2|lastcpupid=0x7ff) raw: 05ffc00000002006 fffffc0003a08b48 ffff80001f8575c0 0000000000000000 raw: 0000000000000004 ffff0000e85855d0 00000000ffffffff 0000000000000000 page dumped because: PAGE_FLAGS_CHECK_AT_FREE flag(s) set Modules linked in: CPU: 0 PID: 4660 Comm: syz-executor Tainted: G B 5.15.189-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 Call trace: dump_backtrace+0x0/0x43c arch/arm64/kernel/stacktrace.c:152 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:216 __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:652 check_free_page_bad+0xf4/0x16c mm/page_alloc.c:1199 check_free_page mm/page_alloc.c:1209 [inline] free_pages_prepare mm/page_alloc.c:1334 [inline] free_pcp_prepare mm/page_alloc.c:1391 [inline] free_unref_page_prepare+0x744/0xaa0 mm/page_alloc.c:3317 free_unref_page_list+0xdc/0x754 mm/page_alloc.c:3433 release_pages+0x13c8/0x16e0 mm/swap.c:963 __pagevec_release+0x84/0xf8 mm/swap.c:983 pagevec_release include/linux/pagevec.h:81 [inline] truncate_inode_pages_range+0x29c/0x9b8 mm/truncate.c:329 truncate_inode_pages+0x2c/0x3c mm/truncate.c:425 dbUnmount+0xf4/0x168 fs/jfs/jfs_dmap.c:264 jfs_umount+0x1c4/0x328 fs/jfs/jfs_umount.c:89 jfs_put_super+0x90/0x188 fs/jfs/super.c:194 generic_shutdown_super+0x130/0x2f0 fs/super.c:475 kill_block_super+0x70/0xdc fs/super.c:1427 deactivate_locked_super+0xb8/0x13c fs/super.c:335 deactivate_super+0xf8/0x118 fs/super.c:366 cleanup_mnt+0x3a4/0x458 fs/namespace.c:1139 __cleanup_mnt+0x20/0x30 fs/namespace.c:1146 task_work_run+0x12c/0x1e0 kernel/task_work.c:188 tracehook_notify_resume include/linux/tracehook.h:189 [inline] do_notify_resume+0x24b4/0x3128 arch/arm64/kernel/signal.c:949 prepare_exit_to_user_mode arch/arm64/kernel/entry-common.c:133 [inline] exit_to_user_mode arch/arm64/kernel/entry-common.c:138 [inline] el0_svc+0xf0/0x1e0 arch/arm64/kernel/entry-common.c:609 el0t_64_sync_handler+0xcc/0xe4 arch/arm64/kernel/entry-common.c:626 el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584 BUG: Bad page state in process syz-executor pfn:12822d page:0000000019e338ad refcount:0 mapcount:0 mapping:0000000000000000 index:0x3 pfn:0x12822d flags: 0x5ffc00000002006(referenced|uptodate|private|node=0|zone=2|lastcpupid=0x7ff) raw: 05ffc00000002006 fffffc00036196c8 ffff80001f8575c0 0000000000000000 raw: 0000000000000003 ffff0000e85856c8 00000000ffffffff 0000000000000000 page dumped because: PAGE_FLAGS_CHECK_AT_FREE flag(s) set Modules linked in: CPU: 0 PID: 4660 Comm: syz-executor Tainted: G B 5.15.189-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 Call trace: dump_backtrace+0x0/0x43c arch/arm64/kernel/stacktrace.c:152 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:216 __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:652 check_free_page_bad+0xf4/0x16c mm/page_alloc.c:1199 check_free_page mm/page_alloc.c:1209 [inline] free_pages_prepare mm/page_alloc.c:1334 [inline] free_pcp_prepare mm/page_alloc.c:1391 [inline] free_unref_page_prepare+0x744/0xaa0 mm/page_alloc.c:3317 free_unref_page_list+0xdc/0x754 mm/page_alloc.c:3433 release_pages+0x13c8/0x16e0 mm/swap.c:963 __pagevec_release+0x84/0xf8 mm/swap.c:983 pagevec_release include/linux/pagevec.h:81 [inline] truncate_inode_pages_range+0x29c/0x9b8 mm/truncate.c:329 truncate_inode_pages+0x2c/0x3c mm/truncate.c:425 dbUnmount+0xf4/0x168 fs/jfs/jfs_dmap.c:264 jfs_umount+0x1c4/0x328 fs/jfs/jfs_umount.c:89 jfs_put_super+0x90/0x188 fs/jfs/super.c:194 generic_shutdown_super+0x130/0x2f0 fs/super.c:475 kill_block_super+0x70/0xdc fs/super.c:1427 deactivate_locked_super+0xb8/0x13c fs/super.c:335 deactivate_super+0xf8/0x118 fs/super.c:366 cleanup_mnt+0x3a4/0x458 fs/namespace.c:1139 __cleanup_mnt+0x20/0x30 fs/namespace.c:1146 task_work_run+0x12c/0x1e0 kernel/task_work.c:188 tracehook_notify_resume include/linux/tracehook.h:189 [inline] do_notify_resume+0x24b4/0x3128 arch/arm64/kernel/signal.c:949 prepare_exit_to_user_mode arch/arm64/kernel/entry-common.c:133 [inline] exit_to_user_mode arch/arm64/kernel/entry-common.c:138 [inline] el0_svc+0xf0/0x1e0 arch/arm64/kernel/entry-common.c:609 el0t_64_sync_handler+0xcc/0xe4 arch/arm64/kernel/entry-common.c:626 el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584 BUG: Bad page state in process syz-executor pfn:10adee page:000000003964ae2c refcount:0 mapcount:0 mapping:0000000000000000 index:0x4 pfn:0x10adee flags: 0x5ffc00000002006(referenced|uptodate|private|node=0|zone=2|lastcpupid=0x7ff) raw: 05ffc00000002006 fffffc00032944c8 ffff80001f8575c0 0000000000000000 raw: 0000000000000004 ffff0000dade07c0 00000000ffffffff 0000000000000000 page dumped because: PAGE_FLAGS_CHECK_AT_FREE flag(s) set Modules linked in: CPU: 1 PID: 4660 Comm: syz-executor Tainted: G B 5.15.189-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 Call trace: dump_backtrace+0x0/0x43c arch/arm64/kernel/stacktrace.c:152 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:216 __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:652 check_free_page_bad+0xf4/0x16c mm/page_alloc.c:1199 check_free_page mm/page_alloc.c:1209 [inline] free_pages_prepare mm/page_alloc.c:1334 [inline] free_pcp_prepare mm/page_alloc.c:1391 [inline] free_unref_page_prepare+0x744/0xaa0 mm/page_alloc.c:3317 free_unref_page_list+0xdc/0x754 mm/page_alloc.c:3433 release_pages+0x13c8/0x16e0 mm/swap.c:963 __pagevec_release+0x84/0xf8 mm/swap.c:983 pagevec_release include/linux/pagevec.h:81 [inline] truncate_inode_pages_range+0x29c/0x9b8 mm/truncate.c:329 truncate_inode_pages+0x2c/0x3c mm/truncate.c:425 dbUnmount+0xf4/0x168 fs/jfs/jfs_dmap.c:264 jfs_umount+0x1c4/0x328 fs/jfs/jfs_umount.c:89 jfs_put_super+0x90/0x188 fs/jfs/super.c:194 generic_shutdown_super+0x130/0x2f0 fs/super.c:475 kill_block_super+0x70/0xdc fs/super.c:1427 deactivate_locked_super+0xb8/0x13c fs/super.c:335 deactivate_super+0xf8/0x118 fs/super.c:366 cleanup_mnt+0x3a4/0x458 fs/namespace.c:1139 __cleanup_mnt+0x20/0x30 fs/namespace.c:1146 task_work_run+0x12c/0x1e0 kernel/task_work.c:188 tracehook_notify_resume include/linux/tracehook.h:189 [inline] do_notify_resume+0x24b4/0x3128 arch/arm64/kernel/signal.c:949 prepare_exit_to_user_mode arch/arm64/kernel/entry-common.c:133 [inline] exit_to_user_mode arch/arm64/kernel/entry-common.c:138 [inline] el0_svc+0xf0/0x1e0 arch/arm64/kernel/entry-common.c:609 el0t_64_sync_handler+0xcc/0xe4 arch/arm64/kernel/entry-common.c:626 el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584 BUG: Bad page state in process syz-executor pfn:10a513 page:00000000542177bd refcount:0 mapcount:0 mapping:0000000000000000 index:0x3 pfn:0x10a513 flags: 0x5ffc00000002006(referenced|uptodate|private|node=0|zone=2|lastcpupid=0x7ff) raw: 05ffc00000002006 fffffc0003497148 ffff80001f8575c0 0000000000000000 raw: 0000000000000003 ffff0000dade08b8 00000000ffffffff 0000000000000000 page dumped because: PAGE_FLAGS_CHECK_AT_FREE flag(s) set Modules linked in: CPU: 1 PID: 4660 Comm: syz-executor Tainted: G B 5.15.189-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 Call trace: dump_backtrace+0x0/0x43c arch/arm64/kernel/stacktrace.c:152 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:216 __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:652 check_free_page_bad+0xf4/0x16c mm/page_alloc.c:1199 check_free_page mm/page_alloc.c:1209 [inline] free_pages_prepare mm/page_alloc.c:1334 [inline] free_pcp_prepare mm/page_alloc.c:1391 [inline] free_unref_page_prepare+0x744/0xaa0 mm/page_alloc.c:3317 free_unref_page_list+0xdc/0x754 mm/page_alloc.c:3433 release_pages+0x13c8/0x16e0 mm/swap.c:963 __pagevec_release+0x84/0xf8 mm/swap.c:983 pagevec_release include/linux/pagevec.h:81 [inline] truncate_inode_pages_range+0x29c/0x9b8 mm/truncate.c:329 truncate_inode_pages+0x2c/0x3c mm/truncate.c:425 dbUnmount+0xf4/0x168 fs/jfs/jfs_dmap.c:264 jfs_umount+0x1c4/0x328 fs/jfs/jfs_umount.c:89 jfs_put_super+0x90/0x188 fs/jfs/super.c:194 generic_shutdown_super+0x130/0x2f0 fs/super.c:475 kill_block_super+0x70/0xdc fs/super.c:1427 deactivate_locked_super+0xb8/0x13c fs/super.c:335 deactivate_super+0xf8/0x118 fs/super.c:366 cleanup_mnt+0x3a4/0x458 fs/namespace.c:1139 __cleanup_mnt+0x20/0x30 fs/namespace.c:1146 task_work_run+0x12c/0x1e0 kernel/task_work.c:188 tracehook_notify_resume include/linux/tracehook.h:189 [inline] do_notify_resume+0x24b4/0x3128 arch/arm64/kernel/signal.c:949 prepare_exit_to_user_mode arch/arm64/kernel/entry-common.c:133 [inline] exit_to_user_mode arch/arm64/kernel/entry-common.c:138 [inline] el0_svc+0xf0/0x1e0 arch/arm64/kernel/entry-common.c:609 el0t_64_sync_handler+0xcc/0xe4 arch/arm64/kernel/entry-common.c:626 el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584 BUG: Bad page state in process syz-executor pfn:109bf0 page:0000000087de8f24 refcount:0 mapcount:0 mapping:0000000000000000 index:0x4 pfn:0x109bf0 flags: 0x5ffc00000002006(referenced|uptodate|private|node=0|zone=2|lastcpupid=0x7ff) raw: 05ffc00000002006 fffffc00033551c8 ffff80001f8575c0 0000000000000000 raw: 0000000000000004 ffff0000d6614000 00000000ffffffff 0000000000000000 page dumped because: PAGE_FLAGS_CHECK_AT_FREE flag(s) set Modules linked in: CPU: 1 PID: 4660 Comm: syz-executor Tainted: G B 5.15.189-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 Call trace: dump_backtrace+0x0/0x43c arch/arm64/kernel/stacktrace.c:152 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:216 __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:652 check_free_page_bad+0xf4/0x16c mm/page_alloc.c:1199 check_free_page mm/page_alloc.c:1209 [inline] free_pages_prepare mm/page_alloc.c:1334 [inline] free_pcp_prepare mm/page_alloc.c:1391 [inline] free_unref_page_prepare+0x744/0xaa0 mm/page_alloc.c:3317 free_unref_page_list+0xdc/0x754 mm/page_alloc.c:3433 release_pages+0x13c8/0x16e0 mm/swap.c:963 __pagevec_release+0x84/0xf8 mm/swap.c:983 pagevec_release include/linux/pagevec.h:81 [inline] truncate_inode_pages_range+0x29c/0x9b8 mm/truncate.c:329 truncate_inode_pages+0x2c/0x3c mm/truncate.c:425 dbUnmount+0xf4/0x168 fs/jfs/jfs_dmap.c:264 jfs_umount+0x1c4/0x328 fs/jfs/jfs_umount.c:89 jfs_put_super+0x90/0x188 fs/jfs/super.c:194 generic_shutdown_super+0x130/0x2f0 fs/super.c:475 kill_block_super+0x70/0xdc fs/super.c:1427 deactivate_locked_super+0xb8/0x13c fs/super.c:335 deactivate_super+0xf8/0x118 fs/super.c:366 cleanup_mnt+0x3a4/0x458 fs/namespace.c:1139 __cleanup_mnt+0x20/0x30 fs/namespace.c:1146 task_work_run+0x12c/0x1e0 kernel/task_work.c:188 tracehook_notify_resume include/linux/tracehook.h:189 [inline] do_notify_resume+0x24b4/0x3128 arch/arm64/kernel/signal.c:949 prepare_exit_to_user_mode arch/arm64/kernel/entry-common.c:133 [inline] exit_to_user_mode arch/arm64/kernel/entry-common.c:138 [inline] el0_svc+0xf0/0x1e0 arch/arm64/kernel/entry-common.c:609 el0t_64_sync_handler+0xcc/0xe4 arch/arm64/kernel/entry-common.c:626 el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584 BUG: Bad page state in process syz-executor pfn:10d547 page:00000000326618c8 refcount:0 mapcount:0 mapping:0000000000000000 index:0x3 pfn:0x10d547 flags: 0x5ffc00000002006(referenced|uptodate|private|node=0|zone=2|lastcpupid=0x7ff) raw: 05ffc00000002006 fffffc00034ad648 ffff80001f8575c0 0000000000000000 raw: 0000000000000003 ffff0000d66140f8 00000000ffffffff 0000000000000000 page dumped because: PAGE_FLAGS_CHECK_AT_FREE flag(s) set Modules linked in: CPU: 1 PID: 4660 Comm: syz-executor Tainted: G B 5.15.189-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 Call trace: dump_backtrace+0x0/0x43c arch/arm64/kernel/stacktrace.c:152 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:216 __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:652 check_free_page_bad+0xf4/0x16c mm/page_alloc.c:1199 check_free_page mm/page_alloc.c:1209 [inline] free_pages_prepare mm/page_alloc.c:1334 [inline] free_pcp_prepare mm/page_alloc.c:1391 [inline] free_unref_page_prepare+0x744/0xaa0 mm/page_alloc.c:3317 free_unref_page_list+0xdc/0x754 mm/page_alloc.c:3433 release_pages+0x13c8/0x16e0 mm/swap.c:963 __pagevec_release+0x84/0xf8 mm/swap.c:983 pagevec_release include/linux/pagevec.h:81 [inline] truncate_inode_pages_range+0x29c/0x9b8 mm/truncate.c:329 truncate_inode_pages+0x2c/0x3c mm/truncate.c:425 dbUnmount+0xf4/0x168 fs/jfs/jfs_dmap.c:264 jfs_umount+0x1c4/0x328 fs/jfs/jfs_umount.c:89 jfs_put_super+0x90/0x188 fs/jfs/super.c:194 generic_shutdown_super+0x130/0x2f0 fs/super.c:475 kill_block_super+0x70/0xdc fs/super.c:1427 deactivate_locked_super+0xb8/0x13c fs/super.c:335 deactivate_super+0xf8/0x118 fs/super.c:366 cleanup_mnt+0x3a4/0x458 fs/namespace.c:1139 __cleanup_mnt+0x20/0x30 fs/namespace.c:1146 task_work_run+0x12c/0x1e0 kernel/task_work.c:188 tracehook_notify_resume include/linux/tracehook.h:189 [inline] do_notify_resume+0x24b4/0x3128 arch/arm64/kernel/signal.c:949 prepare_exit_to_user_mode arch/arm64/kernel/entry-common.c:133 [inline] exit_to_user_mode arch/arm64/kernel/entry-common.c:138 [inline] el0_svc+0xf0/0x1e0 arch/arm64/kernel/entry-common.c:609 el0t_64_sync_handler+0xcc/0xe4 arch/arm64/kernel/entry-common.c:626 el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584 BUG: Bad page state in process syz-executor pfn:10b158 page:000000002eb4d147 refcount:0 mapcount:0 mapping:0000000000000000 index:0x4 pfn:0x10b158 flags: 0x5ffc00000002006(referenced|uptodate|private|node=0|zone=2|lastcpupid=0x7ff) raw: 05ffc00000002006 fffffc00034c0408 ffff80001f8575c0 0000000000000000 raw: 0000000000000004 ffff0000d66148b8 00000000ffffffff 0000000000000000 page dumped because: PAGE_FLAGS_CHECK_AT_FREE flag(s) set Modules linked in: CPU: 1 PID: 4660 Comm: syz-executor Tainted: G B 5.15.189-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 Call trace: dump_backtrace+0x0/0x43c arch/arm64/kernel/stacktrace.c:152 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:216 __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:652 check_free_page_bad+0xf4/0x16c mm/page_alloc.c:1199 check_free_page mm/page_alloc.c:1209 [inline] free_pages_prepare mm/page_alloc.c:1334 [inline] free_pcp_prepare mm/page_alloc.c:1391 [inline] free_unref_page_prepare+0x744/0xaa0 mm/page_alloc.c:3317 free_unref_page_list+0xdc/0x754 mm/page_alloc.c:3433 release_pages+0x13c8/0x16e0 mm/swap.c:963 __pagevec_release+0x84/0xf8 mm/swap.c:983 pagevec_release include/linux/pagevec.h:81 [inline] truncate_inode_pages_range+0x29c/0x9b8 mm/truncate.c:329 truncate_inode_pages+0x2c/0x3c mm/truncate.c:425 dbUnmount+0xf4/0x168 fs/jfs/jfs_dmap.c:264 jfs_umount+0x1c4/0x328 fs/jfs/jfs_umount.c:89 jfs_put_super+0x90/0x188 fs/jfs/super.c:194 generic_shutdown_super+0x130/0x2f0 fs/super.c:475 kill_block_super+0x70/0xdc fs/super.c:1427 deactivate_locked_super+0xb8/0x13c fs/super.c:335 deactivate_super+0xf8/0x118 fs/super.c:366 cleanup_mnt+0x3a4/0x458 fs/namespace.c:1139 __cleanup_mnt+0x20/0x30 fs/namespace.c:1146 task_work_run+0x12c/0x1e0 kernel/task_work.c:188 tracehook_notify_resume include/linux/tracehook.h:189 [inline] do_notify_resume+0x24b4/0x3128 arch/arm64/kernel/signal.c:949 prepare_exit_to_user_mode arch/arm64/kernel/entry-common.c:133 [inline] exit_to_user_mode arch/arm64/kernel/entry-common.c:138 [inline] el0_svc+0xf0/0x1e0 arch/arm64/kernel/entry-common.c:609 el0t_64_sync_handler+0xcc/0xe4 arch/arm64/kernel/entry-common.c:626 el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584 BUG: Bad page state in process syz-executor pfn:113010 page:00000000aa477b4d refcount:0 mapcount:0 mapping:0000000000000000 index:0x3 pfn:0x113010 flags: 0x5ffc00000002006(referenced|uptodate|private|node=0|zone=2|lastcpupid=0x7ff) raw: 05ffc00000002006 fffffc0003491008 ffff80001f8575c0 0000000000000000 raw: 0000000000000003 ffff0000d66149b0 00000000ffffffff 0000000000000000 page dumped because: PAGE_FLAGS_CHECK_AT_FREE flag(s) set Modules linked in: CPU: 1 PID: 4660 Comm: syz-executor Tainted: G B 5.15.189-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 Call trace: dump_backtrace+0x0/0x43c arch/arm64/kernel/stacktrace.c:152 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:216 __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:652 check_free_page_bad+0xf4/0x16c mm/page_alloc.c:1199 check_free_page mm/page_alloc.c:1209 [inline] free_pages_prepare mm/page_alloc.c:1334 [inline] free_pcp_prepare mm/page_alloc.c:1391 [inline] free_unref_page_prepare+0x744/0xaa0 mm/page_alloc.c:3317 free_unref_page_list+0xdc/0x754 mm/page_alloc.c:3433 release_pages+0x13c8/0x16e0 mm/swap.c:963 __pagevec_release+0x84/0xf8 mm/swap.c:983 pagevec_release include/linux/pagevec.h:81 [inline] truncate_inode_pages_range+0x29c/0x9b8 mm/truncate.c:329 truncate_inode_pages+0x2c/0x3c mm/truncate.c:425 dbUnmount+0xf4/0x168 fs/jfs/jfs_dmap.c:264 jfs_umount+0x1c4/0x328 fs/jfs/jfs_umount.c:89 jfs_put_super+0x90/0x188 fs/jfs/super.c:194 generic_shutdown_super+0x130/0x2f0 fs/super.c:475 kill_block_super+0x70/0xdc fs/super.c:1427 deactivate_locked_super+0xb8/0x13c fs/super.c:335 deactivate_super+0xf8/0x118 fs/super.c:366 cleanup_mnt+0x3a4/0x458 fs/namespace.c:1139 __cleanup_mnt+0x20/0x30 fs/namespace.c:1146 task_work_run+0x12c/0x1e0 kernel/task_work.c:188 tracehook_notify_resume include/linux/tracehook.h:189 [inline] do_notify_resume+0x24b4/0x3128 arch/arm64/kernel/signal.c:949 prepare_exit_to_user_mode arch/arm64/kernel/entry-common.c:133 [inline] exit_to_user_mode arch/arm64/kernel/entry-common.c:138 [inline] el0_svc+0xf0/0x1e0 arch/arm64/kernel/entry-common.c:609 el0t_64_sync_handler+0xcc/0xe4 arch/arm64/kernel/entry-common.c:626 el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584 BUG: Bad page state in process syz-executor pfn:12850e page:000000000490bf53 refcount:0 mapcount:0 mapping:0000000000000000 index:0x4 pfn:0x12850e flags: 0x5ffc00000002006(referenced|uptodate|private|node=0|zone=2|lastcpupid=0x7ff) raw: 05ffc00000002006 fffffc0003a14608 ffff80001f8575c0 0000000000000000 raw: 0000000000000004 ffff0000e8bc6aa8 00000000ffffffff 0000000000000000 page dumped because: PAGE_FLAGS_CHECK_AT_FREE flag(s) set Modules linked in: CPU: 1 PID: 4660 Comm: syz-executor Tainted: G B 5.15.189-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 Call trace: dump_backtrace+0x0/0x43c arch/arm64/kernel/stacktrace.c:152 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:216 __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:652 check_free_page_bad+0xf4/0x16c mm/page_alloc.c:1199 check_free_page mm/page_alloc.c:1209 [inline] free_pages_prepare mm/page_alloc.c:1334 [inline] free_pcp_prepare mm/page_alloc.c:1391 [inline] free_unref_page_prepare+0x744/0xaa0 mm/page_alloc.c:3317 free_unref_page_list+0xdc/0x754 mm/page_alloc.c:3433 release_pages+0x13c8/0x16e0 mm/swap.c:963 __pagevec_release+0x84/0xf8 mm/swap.c:983 pagevec_release include/linux/pagevec.h:81 [inline] truncate_inode_pages_range+0x29c/0x9b8 mm/truncate.c:329 truncate_inode_pages+0x2c/0x3c mm/truncate.c:425 dbUnmount+0xf4/0x168 fs/jfs/jfs_dmap.c:264 jfs_umount+0x1c4/0x328 fs/jfs/jfs_umount.c:89 jfs_put_super+0x90/0x188 fs/jfs/super.c:194 generic_shutdown_super+0x130/0x2f0 fs/super.c:475 kill_block_super+0x70/0xdc fs/super.c:1427 deactivate_locked_super+0xb8/0x13c fs/super.c:335 deactivate_super+0xf8/0x118 fs/super.c:366 cleanup_mnt+0x3a4/0x458 fs/namespace.c:1139 __cleanup_mnt+0x20/0x30 fs/namespace.c:1146 task_work_run+0x12c/0x1e0 kernel/task_work.c:188 tracehook_notify_resume include/linux/tracehook.h:189 [inline] do_notify_resume+0x24b4/0x3128 arch/arm64/kernel/signal.c:949 prepare_exit_to_user_mode arch/arm64/kernel/entry-common.c:133 [inline] exit_to_user_mode arch/arm64/kernel/entry-common.c:138 [inline] el0_svc+0xf0/0x1e0 arch/arm64/kernel/entry-common.c:609 el0t_64_sync_handler+0xcc/0xe4 arch/arm64/kernel/entry-common.c:626 el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584 BUG: Bad page state in process syz-executor pfn:128518 page:00000000bf241b50 refcount:0 mapcount:0 mapping:0000000000000000 index:0x3 pfn:0x128518 flags: 0x5ffc00000002006(referenced|uptodate|private|node=0|zone=2|lastcpupid=0x7ff) raw: 05ffc00000002006 fffffc000337bb88 ffff80001f8575c0 0000000000000000 raw: 0000000000000003 ffff0000e8bc6ba0 00000000ffffffff 0000000000000000 page dumped because: PAGE_FLAGS_CHECK_AT_FREE flag(s) set Modules linked in: CPU: 1 PID: 4660 Comm: syz-executor Tainted: G B 5.15.189-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 Call trace: dump_backtrace+0x0/0x43c arch/arm64/kernel/stacktrace.c:152 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:216 __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:652 check_free_page_bad+0xf4/0x16c mm/page_alloc.c:1199 check_free_page mm/page_alloc.c:1209 [inline] free_pages_prepare mm/page_alloc.c:1334 [inline] free_pcp_prepare mm/page_alloc.c:1391 [inline] free_unref_page_prepare+0x744/0xaa0 mm/page_alloc.c:3317 free_unref_page_list+0xdc/0x754 mm/page_alloc.c:3433 release_pages+0x13c8/0x16e0 mm/swap.c:963 __pagevec_release+0x84/0xf8 mm/swap.c:983 pagevec_release include/linux/pagevec.h:81 [inline] truncate_inode_pages_range+0x29c/0x9b8 mm/truncate.c:329 truncate_inode_pages+0x2c/0x3c mm/truncate.c:425 dbUnmount+0xf4/0x168 fs/jfs/jfs_dmap.c:264 jfs_umount+0x1c4/0x328 fs/jfs/jfs_umount.c:89 jfs_put_super+0x90/0x188 fs/jfs/super.c:194 generic_shutdown_super+0x130/0x2f0 fs/super.c:475 kill_block_super+0x70/0xdc fs/super.c:1427 deactivate_locked_super+0xb8/0x13c fs/super.c:335 deactivate_super+0xf8/0x118 fs/super.c:366 cleanup_mnt+0x3a4/0x458 fs/namespace.c:1139 __cleanup_mnt+0x20/0x30 fs/namespace.c:1146 task_work_run+0x12c/0x1e0 kernel/task_work.c:188 tracehook_notify_resume include/linux/tracehook.h:189 [inline] do_notify_resume+0x24b4/0x3128 arch/arm64/kernel/signal.c:949 prepare_exit_to_user_mode arch/arm64/kernel/entry-common.c:133 [inline] exit_to_user_mode arch/arm64/kernel/entry-common.c:138 [inline] el0_svc+0xf0/0x1e0 arch/arm64/kernel/entry-common.c:609 el0t_64_sync_handler+0xcc/0xe4 arch/arm64/kernel/entry-common.c:626 el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584 BUG: Bad page state in process syz-executor pfn:12cade page:000000005cb567f4 refcount:0 mapcount:0 mapping:0000000000000000 index:0x4 pfn:0x12cade flags: 0x5ffc00000002006(referenced|uptodate|private|node=0|zone=2|lastcpupid=0x7ff) raw: 05ffc00000002006 fffffc0003a27048 ffff80001f8575c0 0000000000000000 raw: 0000000000000004 ffff0000d393a2e8 00000000ffffffff 0000000000000000 page dumped because: PAGE_FLAGS_CHECK_AT_FREE flag(s) set Modules linked in: CPU: 0 PID: 4660 Comm: syz-executor Tainted: G B 5.15.189-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 Call trace: dump_backtrace+0x0/0x43c arch/arm64/kernel/stacktrace.c:152 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:216 __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:652 check_free_page_bad+0xf4/0x16c mm/page_alloc.c:1199 check_free_page mm/page_alloc.c:1209 [inline] free_pages_prepare mm/page_alloc.c:1334 [inline] free_pcp_prepare mm/page_alloc.c:1391 [inline] free_unref_page_prepare+0x744/0xaa0 mm/page_alloc.c:3317 free_unref_page_list+0xdc/0x754 mm/page_alloc.c:3433 release_pages+0x13c8/0x16e0 mm/swap.c:963 __pagevec_release+0x84/0xf8 mm/swap.c:983 pagevec_release include/linux/pagevec.h:81 [inline] truncate_inode_pages_range+0x29c/0x9b8 mm/truncate.c:329 truncate_inode_pages+0x2c/0x3c mm/truncate.c:425 dbUnmount+0xf4/0x168 fs/jfs/jfs_dmap.c:264 jfs_umount+0x1c4/0x328 fs/jfs/jfs_umount.c:89 jfs_put_super+0x90/0x188 fs/jfs/super.c:194 generic_shutdown_super+0x130/0x2f0 fs/super.c:475 kill_block_super+0x70/0xdc fs/super.c:1427 deactivate_locked_super+0xb8/0x13c fs/super.c:335 deactivate_super+0xf8/0x118 fs/super.c:366 cleanup_mnt+0x3a4/0x458 fs/namespace.c:1139 __cleanup_mnt+0x20/0x30 fs/namespace.c:1146 task_work_run+0x12c/0x1e0 kernel/task_work.c:188 tracehook_notify_resume include/linux/tracehook.h:189 [inline] do_notify_resume+0x24b4/0x3128 arch/arm64/kernel/signal.c:949 prepare_exit_to_user_mode arch/arm64/kernel/entry-common.c:133 [inline] exit_to_user_mode arch/arm64/kernel/entry-common.c:138 [inline] el0_svc+0xf0/0x1e0 arch/arm64/kernel/entry-common.c:609 el0t_64_sync_handler+0xcc/0xe4 arch/arm64/kernel/entry-common.c:626 el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584 BUG: Bad page state in process syz-executor pfn:1289c1 page:0000000090b8e197 refcount:0 mapcount:0 mapping:0000000000000000 index:0x3 pfn:0x1289c1 flags: 0x5ffc00000002006(referenced|uptodate|private|node=0|zone=2|lastcpupid=0x7ff) raw: 05ffc00000002006 fffffc00034b5808 ffff80001f8575c0 0000000000000000 raw: 0000000000000003 ffff0000d393a3e0 00000000ffffffff 0000000000000000 page dumped because: PAGE_FLAGS_CHECK_AT_FREE flag(s) set Modules linked in: CPU: 0 PID: 4660 Comm: syz-executor Tainted: G B 5.15.189-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 Call trace: dump_backtrace+0x0/0x43c arch/arm64/kernel/stacktrace.c:152 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:216 __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:652 check_free_page_bad+0xf4/0x16c mm/page_alloc.c:1199 check_free_page mm/page_alloc.c:1209 [inline] free_pages_prepare mm/page_alloc.c:1334 [inline] free_pcp_prepare mm/page_alloc.c:1391 [inline] free_unref_page_prepare+0x744/0xaa0 mm/page_alloc.c:3317 free_unref_page_list+0xdc/0x754 mm/page_alloc.c:3433 release_pages+0x13c8/0x16e0 mm/swap.c:963 __pagevec_release+0x84/0xf8 mm/swap.c:983 pagevec_release include/linux/pagevec.h:81 [inline] truncate_inode_pages_range+0x29c/0x9b8 mm/truncate.c:329 truncate_inode_pages+0x2c/0x3c mm/truncate.c:425 dbUnmount+0xf4/0x168 fs/jfs/jfs_dmap.c:264 jfs_umount+0x1c4/0x328 fs/jfs/jfs_umount.c:89 jfs_put_super+0x90/0x188 fs/jfs/super.c:194 generic_shutdown_super+0x130/0x2f0 fs/super.c:475 kill_block_super+0x70/0xdc fs/super.c:1427 deactivate_locked_super+0xb8/0x13c fs/super.c:335 deactivate_super+0xf8/0x118 fs/super.c:366 cleanup_mnt+0x3a4/0x458 fs/namespace.c:1139 __cleanup_mnt+0x20/0x30 fs/namespace.c:1146 task_work_run+0x12c/0x1e0 kernel/task_work.c:188 tracehook_notify_resume include/linux/tracehook.h:189 [inline] do_notify_resume+0x24b4/0x3128 arch/arm64/kernel/signal.c:949 prepare_exit_to_user_mode arch/arm64/kernel/entry-common.c:133 [inline] exit_to_user_mode arch/arm64/kernel/entry-common.c:138 [inline] el0_svc+0xf0/0x1e0 arch/arm64/kernel/entry-common.c:609 el0t_64_sync_handler+0xcc/0xe4 arch/arm64/kernel/entry-common.c:626 el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584