BUG: Bad page state in process syz.2.1497 pfn:294e8
page:ffffea0000a53a00 refcount:0 mapcount:0 mapping:0000000000000000 index:0x2f pfn:0x294e8
flags: 0xfff00000002006(referenced|uptodate|private|node=0|zone=1|lastcpupid=0x7ff)
raw: 00fff00000002006 ffffea0001a220c8 ffffc90005a17980 0000000000000000
raw: 000000000000002f ffff88801c291000 00000000ffffffff 0000000000000000
page dumped because: PAGE_FLAGS_CHECK_AT_FREE flag(s) set
page_owner tracks the page as allocated
page last allocated via order 0, migratetype Unmovable, gfp_mask 0x140c40(GFP_NOFS|__GFP_COMP|__GFP_HARDWALL), pid 9886, tgid 9885 (syz.2.1497), ts 455296559241, free_ts 410845096278
set_page_owner include/linux/page_owner.h:31 [inline]
post_alloc_hook+0x173/0x1a0 mm/page_alloc.c:2532
prep_new_page mm/page_alloc.c:2539 [inline]
get_page_from_freelist+0x1a26/0x1ac0 mm/page_alloc.c:4328
__alloc_pages+0x1df/0x4e0 mm/page_alloc.c:5614
folio_alloc+0x1c/0x60 mm/mempolicy.c:2292
filemap_alloc_folio+0xdb/0x460 mm/filemap.c:999
__filemap_get_folio+0x697/0xdd0 mm/filemap.c:1993
pagecache_get_page+0x26/0x250 mm/folio-compat.c:110
find_or_create_page include/linux/pagemap.h:646 [inline]
grab_cache_page include/linux/pagemap.h:778 [inline]
__get_metapage+0x2a4/0xfa0 fs/jfs/jfs_metapage.c:613
diNewExt+0x9eb/0x2cb0 fs/jfs/jfs_imap.c:2275
diAllocExt fs/jfs/jfs_imap.c:1952 [inline]
diAllocAG+0xde9/0x1c20 fs/jfs/jfs_imap.c:1669
diAlloc+0x1c9/0x1910 fs/jfs/jfs_imap.c:1590
ialloc+0x88/0x950 fs/jfs/jfs_inode.c:56
jfs_mkdir+0x190/0xa70 fs/jfs/namei.c:225
vfs_mkdir+0x387/0x570 fs/namei.c:4114
do_mkdirat+0x1d0/0x430 fs/namei.c:4139
__do_sys_mkdirat fs/namei.c:4154 [inline]
__se_sys_mkdirat fs/namei.c:4152 [inline]
__x64_sys_mkdirat+0x85/0x90 fs/namei.c:4152
page last free stack trace:
reset_page_owner include/linux/page_owner.h:24 [inline]
free_pages_prepare mm/page_alloc.c:1459 [inline]
free_pcp_prepare mm/page_alloc.c:1509 [inline]
free_unref_page_prepare+0x8b4/0x9a0 mm/page_alloc.c:3384
free_unref_page+0x2e/0x3f0 mm/page_alloc.c:3479
__vunmap+0x856/0xa00 mm/vmalloc.c:2726
kcov_put kernel/kcov.c:437 [inline]
kcov_close+0x27/0x50 kernel/kcov.c:533
__fput+0x22c/0x920 fs/file_table.c:320
task_work_run+0x1ca/0x250 kernel/task_work.c:203
exit_task_work include/linux/task_work.h:39 [inline]
do_exit+0x93e/0x2400 kernel/exit.c:880
do_group_exit+0x217/0x2d0 kernel/exit.c:1022
get_signal+0x1272/0x1350 kernel/signal.c:2871
arch_do_signal_or_restart+0xb7/0x1240 arch/x86/kernel/signal.c:871
exit_to_user_mode_loop+0x70/0x110 kernel/entry/common.c:174
exit_to_user_mode_prepare+0xee/0x180 kernel/entry/common.c:210
__syscall_exit_to_user_mode_work kernel/entry/common.c:292 [inline]
syscall_exit_to_user_mode+0x16/0x40 kernel/entry/common.c:303
do_syscall_64+0x58/0xa0 arch/x86/entry/common.c:87
entry_SYSCALL_64_after_hwframe+0x68/0xd2
Modules linked in:
CPU: 1 PID: 9925 Comm: syz.2.1497 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/02/2025
Call Trace:
dump_stack_lvl+0x168/0x22e lib/dump_stack.c:106
bad_page+0x14b/0x170 mm/page_alloc.c:699
free_page_is_bad mm/page_alloc.c:1291 [inline]
free_pages_prepare mm/page_alloc.c:1452 [inline]
free_pcp_prepare mm/page_alloc.c:1509 [inline]
free_unref_page_prepare+0x42a/0x9a0 mm/page_alloc.c:3384
free_unref_page_list+0xbb/0x8e0 mm/page_alloc.c:3525
release_pages+0x1f92/0x2200 mm/swap.c:1035
__pagevec_release+0x6d/0xe0 mm/swap.c:1055
pagevec_release include/linux/pagevec.h:71 [inline]
folio_batch_release include/linux/pagevec.h:135 [inline]
truncate_inode_pages_range+0x2f6/0xff0 mm/truncate.c:372
jfs_remount+0x337/0x5a0 fs/jfs/super.c:451
reconfigure_super+0x219/0x880 fs/super.c:977
do_remount fs/namespace.c:2741 [inline]
path_mount+0xdfd/0x1010 fs/namespace.c:3400
do_mount fs/namespace.c:3421 [inline]
__do_sys_mount fs/namespace.c:3629 [inline]
__se_sys_mount+0x2d6/0x3c0 fs/namespace.c:3606
do_syscall_x64 arch/x86/entry/common.c:51 [inline]
do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:81
entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7f6fb119076a
Code: d8 64 89 02 48 c7 c0 ff ff ff ff eb a6 e8 de 1a 00 00 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f6fb20c0e68 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007f6fb20c0ef0 RCX: 00007f6fb119076a
RDX: 0000200000000f40 RSI: 0000200000000f00 RDI: 0000000000000000
RBP: 0000200000000f40 R08: 00007f6fb20c0ef0 R09: 0000000001a4a438
R10: 0000000001a4a438 R11: 0000000000000246 R12: 0000200000000f00
R13: 00007f6fb20c0eb0 R14: 0000000000000000 R15: 0000200000000f80
BUG: Bad page state in process syz.2.1497 pfn:68883
page:ffffea0001a220c0 refcount:0 mapcount:0 mapping:0000000000000000 index:0x2e pfn:0x68883
flags: 0xfff00000002006(referenced|uptodate|private|node=0|zone=1|lastcpupid=0x7ff)
raw: 00fff00000002006 ffffea0001a22088 ffffc90005a17980 0000000000000000
raw: 000000000000002e ffff88801c2911f0 00000000ffffffff 0000000000000000
page dumped because: PAGE_FLAGS_CHECK_AT_FREE flag(s) set
page_owner tracks the page as allocated
page last allocated via order 0, migratetype Unmovable, gfp_mask 0x140c40(GFP_NOFS|__GFP_COMP|__GFP_HARDWALL), pid 9886, tgid 9885 (syz.2.1497), ts 455293910607, free_ts 410848815641
set_page_owner include/linux/page_owner.h:31 [inline]
post_alloc_hook+0x173/0x1a0 mm/page_alloc.c:2532
prep_new_page mm/page_alloc.c:2539 [inline]
get_page_from_freelist+0x1a26/0x1ac0 mm/page_alloc.c:4328
__alloc_pages+0x1df/0x4e0 mm/page_alloc.c:5614
folio_alloc+0x1c/0x60 mm/mempolicy.c:2292
filemap_alloc_folio+0xdb/0x460 mm/filemap.c:999
__filemap_get_folio+0x697/0xdd0 mm/filemap.c:1993
pagecache_get_page+0x26/0x250 mm/folio-compat.c:110
find_or_create_page include/linux/pagemap.h:646 [inline]
grab_cache_page include/linux/pagemap.h:778 [inline]
__get_metapage+0x2a4/0xfa0 fs/jfs/jfs_metapage.c:613
diNewExt+0x9eb/0x2cb0 fs/jfs/jfs_imap.c:2275
diAllocExt fs/jfs/jfs_imap.c:1952 [inline]
diAllocAG+0xde9/0x1c20 fs/jfs/jfs_imap.c:1669
diAlloc+0x1c9/0x1910 fs/jfs/jfs_imap.c:1590
ialloc+0x88/0x950 fs/jfs/jfs_inode.c:56
jfs_mkdir+0x190/0xa70 fs/jfs/namei.c:225
vfs_mkdir+0x387/0x570 fs/namei.c:4114
do_mkdirat+0x1d0/0x430 fs/namei.c:4139
__do_sys_mkdirat fs/namei.c:4154 [inline]
__se_sys_mkdirat fs/namei.c:4152 [inline]
__x64_sys_mkdirat+0x85/0x90 fs/namei.c:4152
page last free stack trace:
reset_page_owner include/linux/page_owner.h:24 [inline]
free_pages_prepare mm/page_alloc.c:1459 [inline]
free_pcp_prepare mm/page_alloc.c:1509 [inline]
free_unref_page_prepare+0x8b4/0x9a0 mm/page_alloc.c:3384
free_unref_page+0x2e/0x3f0 mm/page_alloc.c:3479
__vunmap+0x856/0xa00 mm/vmalloc.c:2726
kcov_put kernel/kcov.c:437 [inline]
kcov_close+0x27/0x50 kernel/kcov.c:533
__fput+0x22c/0x920 fs/file_table.c:320
task_work_run+0x1ca/0x250 kernel/task_work.c:203
exit_task_work include/linux/task_work.h:39 [inline]
do_exit+0x93e/0x2400 kernel/exit.c:880
do_group_exit+0x217/0x2d0 kernel/exit.c:1022
get_signal+0x1272/0x1350 kernel/signal.c:2871
arch_do_signal_or_restart+0xb7/0x1240 arch/x86/kernel/signal.c:871
exit_to_user_mode_loop+0x70/0x110 kernel/entry/common.c:174
exit_to_user_mode_prepare+0xee/0x180 kernel/entry/common.c:210
__syscall_exit_to_user_mode_work kernel/entry/common.c:292 [inline]
syscall_exit_to_user_mode+0x16/0x40 kernel/entry/common.c:303
do_syscall_64+0x58/0xa0 arch/x86/entry/common.c:87
entry_SYSCALL_64_after_hwframe+0x68/0xd2
Modules linked in:
CPU: 1 PID: 9925 Comm: syz.2.1497 Tainted: G B syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/02/2025
Call Trace:
dump_stack_lvl+0x168/0x22e lib/dump_stack.c:106
bad_page+0x14b/0x170 mm/page_alloc.c:699
free_page_is_bad mm/page_alloc.c:1291 [inline]
free_pages_prepare mm/page_alloc.c:1452 [inline]
free_pcp_prepare mm/page_alloc.c:1509 [inline]
free_unref_page_prepare+0x42a/0x9a0 mm/page_alloc.c:3384
free_unref_page_list+0xbb/0x8e0 mm/page_alloc.c:3525
release_pages+0x1f92/0x2200 mm/swap.c:1035
__pagevec_release+0x6d/0xe0 mm/swap.c:1055
pagevec_release include/linux/pagevec.h:71 [inline]
folio_batch_release include/linux/pagevec.h:135 [inline]
truncate_inode_pages_range+0x2f6/0xff0 mm/truncate.c:372
jfs_remount+0x337/0x5a0 fs/jfs/super.c:451
reconfigure_super+0x219/0x880 fs/super.c:977
do_remount fs/namespace.c:2741 [inline]
path_mount+0xdfd/0x1010 fs/namespace.c:3400
do_mount fs/namespace.c:3421 [inline]
__do_sys_mount fs/namespace.c:3629 [inline]
__se_sys_mount+0x2d6/0x3c0 fs/namespace.c:3606
do_syscall_x64 arch/x86/entry/common.c:51 [inline]
do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:81
entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7f6fb119076a
Code: d8 64 89 02 48 c7 c0 ff ff ff ff eb a6 e8 de 1a 00 00 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f6fb20c0e68 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007f6fb20c0ef0 RCX: 00007f6fb119076a
RDX: 0000200000000f40 RSI: 0000200000000f00 RDI: 0000000000000000
RBP: 0000200000000f40 R08: 00007f6fb20c0ef0 R09: 0000000001a4a438
R10: 0000000001a4a438 R11: 0000000000000246 R12: 0000200000000f00
R13: 00007f6fb20c0eb0 R14: 0000000000000000 R15: 0000200000000f80
BUG: Bad page state in process syz.2.1497 pfn:68882
page:ffffea0001a22080 refcount:0 mapcount:0 mapping:0000000000000000 index:0x2d pfn:0x68882
flags: 0xfff00000002006(referenced|uptodate|private|node=0|zone=1|lastcpupid=0x7ff)
raw: 00fff00000002006 ffffea0001df00c8 ffffc90005a17980 0000000000000000
raw: 000000000000002d ffff88801c2913e0 00000000ffffffff 0000000000000000
page dumped because: PAGE_FLAGS_CHECK_AT_FREE flag(s) set
page_owner tracks the page as allocated
page last allocated via order 0, migratetype Unmovable, gfp_mask 0x140c40(GFP_NOFS|__GFP_COMP|__GFP_HARDWALL), pid 9886, tgid 9885 (syz.2.1497), ts 455287025104, free_ts 410848827146
set_page_owner include/linux/page_owner.h:31 [inline]
post_alloc_hook+0x173/0x1a0 mm/page_alloc.c:2532
prep_new_page mm/page_alloc.c:2539 [inline]
get_page_from_freelist+0x1a26/0x1ac0 mm/page_alloc.c:4328
__alloc_pages+0x1df/0x4e0 mm/page_alloc.c:5614
folio_alloc+0x1c/0x60 mm/mempolicy.c:2292
filemap_alloc_folio+0xdb/0x460 mm/filemap.c:999
__filemap_get_folio+0x697/0xdd0 mm/filemap.c:1993
pagecache_get_page+0x26/0x250 mm/folio-compat.c:110
find_or_create_page include/linux/pagemap.h:646 [inline]
grab_cache_page include/linux/pagemap.h:778 [inline]
__get_metapage+0x2a4/0xfa0 fs/jfs/jfs_metapage.c:613
diNewExt+0x9eb/0x2cb0 fs/jfs/jfs_imap.c:2275
diAllocExt fs/jfs/jfs_imap.c:1952 [inline]
diAllocAG+0xde9/0x1c20 fs/jfs/jfs_imap.c:1669
diAlloc+0x1c9/0x1910 fs/jfs/jfs_imap.c:1590
ialloc+0x88/0x950 fs/jfs/jfs_inode.c:56
jfs_mkdir+0x190/0xa70 fs/jfs/namei.c:225
vfs_mkdir+0x387/0x570 fs/namei.c:4114
do_mkdirat+0x1d0/0x430 fs/namei.c:4139
__do_sys_mkdirat fs/namei.c:4154 [inline]
__se_sys_mkdirat fs/namei.c:4152 [inline]
__x64_sys_mkdirat+0x85/0x90 fs/namei.c:4152
page last free stack trace:
reset_page_owner include/linux/page_owner.h:24 [inline]
free_pages_prepare mm/page_alloc.c:1459 [inline]
free_pcp_prepare mm/page_alloc.c:1509 [inline]
free_unref_page_prepare+0x8b4/0x9a0 mm/page_alloc.c:3384
free_unref_page+0x2e/0x3f0 mm/page_alloc.c:3479
__vunmap+0x856/0xa00 mm/vmalloc.c:2726
kcov_put kernel/kcov.c:437 [inline]
kcov_close+0x27/0x50 kernel/kcov.c:533
__fput+0x22c/0x920 fs/file_table.c:320
task_work_run+0x1ca/0x250 kernel/task_work.c:203
exit_task_work include/linux/task_work.h:39 [inline]
do_exit+0x93e/0x2400 kernel/exit.c:880
do_group_exit+0x217/0x2d0 kernel/exit.c:1022
get_signal+0x1272/0x1350 kernel/signal.c:2871
arch_do_signal_or_restart+0xb7/0x1240 arch/x86/kernel/signal.c:871
exit_to_user_mode_loop+0x70/0x110 kernel/entry/common.c:174
exit_to_user_mode_prepare+0xee/0x180 kernel/entry/common.c:210
__syscall_exit_to_user_mode_work kernel/entry/common.c:292 [inline]
syscall_exit_to_user_mode+0x16/0x40 kernel/entry/common.c:303
do_syscall_64+0x58/0xa0 arch/x86/entry/common.c:87
entry_SYSCALL_64_after_hwframe+0x68/0xd2
Modules linked in:
CPU: 1 PID: 9925 Comm: syz.2.1497 Tainted: G B syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/02/2025
Call Trace:
dump_stack_lvl+0x168/0x22e lib/dump_stack.c:106
bad_page+0x14b/0x170 mm/page_alloc.c:699
free_page_is_bad mm/page_alloc.c:1291 [inline]
free_pages_prepare mm/page_alloc.c:1452 [inline]
free_pcp_prepare mm/page_alloc.c:1509 [inline]
free_unref_page_prepare+0x42a/0x9a0 mm/page_alloc.c:3384
free_unref_page_list+0xbb/0x8e0 mm/page_alloc.c:3525
release_pages+0x1f92/0x2200 mm/swap.c:1035
__pagevec_release+0x6d/0xe0 mm/swap.c:1055
pagevec_release include/linux/pagevec.h:71 [inline]
folio_batch_release include/linux/pagevec.h:135 [inline]
truncate_inode_pages_range+0x2f6/0xff0 mm/truncate.c:372
jfs_remount+0x337/0x5a0 fs/jfs/super.c:451
reconfigure_super+0x219/0x880 fs/super.c:977
do_remount fs/namespace.c:2741 [inline]
path_mount+0xdfd/0x1010 fs/namespace.c:3400
do_mount fs/namespace.c:3421 [inline]
__do_sys_mount fs/namespace.c:3629 [inline]
__se_sys_mount+0x2d6/0x3c0 fs/namespace.c:3606
do_syscall_x64 arch/x86/entry/common.c:51 [inline]
do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:81
entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7f6fb119076a
Code: d8 64 89 02 48 c7 c0 ff ff ff ff eb a6 e8 de 1a 00 00 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f6fb20c0e68 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007f6fb20c0ef0 RCX: 00007f6fb119076a
RDX: 0000200000000f40 RSI: 0000200000000f00 RDI: 0000000000000000
RBP: 0000200000000f40 R08: 00007f6fb20c0ef0 R09: 0000000001a4a438
R10: 0000000001a4a438 R11: 0000000000000246 R12: 0000200000000f00
R13: 00007f6fb20c0eb0 R14: 0000000000000000 R15: 0000200000000f80