BUG: Bad page state in process syz-executor pfn:58759
page:ffffea000161d640 refcount:0 mapcount:0 mapping:0000000000000000 index:0x4 pfn:0x58759
flags: 0xfff18000002046(referenced|uptodate|workingset|private|node=0|zone=1|lastcpupid=0x7ff)
raw: 00fff18000002046 ffffea000074e448 ffffc90003ed7960 0000000000000000
raw: 0000000000000004 ffff8880286232e8 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 4553, tgid 4552 (syz.4.47), ts 103588472385, free_ts 93870729009
set_page_owner include/linux/page_owner.h:31 [inline]
post_alloc_hook+0x173/0x1a0 mm/page_alloc.c:2559
prep_new_page mm/page_alloc.c:2566 [inline]
get_page_from_freelist+0x1a1e/0x1ab0 mm/page_alloc.c:4357
__alloc_pages+0x1ec/0x4f0 mm/page_alloc.c:5657
folio_alloc+0x1c/0x60 mm/mempolicy.c:2292
filemap_alloc_folio+0xdb/0x480 mm/filemap.c:999
do_read_cache_folio+0x1bb/0x760 mm/filemap.c:3623
do_read_cache_page+0x32/0x220 mm/filemap.c:3701
read_mapping_page include/linux/pagemap.h:793 [inline]
__get_metapage+0x316/0xfa0 fs/jfs/jfs_metapage.c:620
dbAllocCtl+0xd4/0x9b0 fs/jfs/jfs_dmap.c:1813
dbAllocAG+0x1e7/0xfe0 fs/jfs/jfs_dmap.c:1353
dbDiscardAG+0x2c5/0x8e0 fs/jfs/jfs_dmap.c:1608
jfs_ioc_trim+0x42b/0x660 fs/jfs/jfs_discard.c:105
jfs_ioctl+0x28f/0x3b0 fs/jfs/ioctl.c:131
vfs_ioctl fs/ioctl.c:51 [inline]
__do_sys_ioctl fs/ioctl.c:870 [inline]
__se_sys_ioctl+0xfa/0x170 fs/ioctl.c:856
do_syscall_x64 arch/x86/entry/common.c:46 [inline]
do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:76
entry_SYSCALL_64_after_hwframe+0x68/0xd2
page last free stack trace:
reset_page_owner include/linux/page_owner.h:24 [inline]
free_pages_prepare mm/page_alloc.c:1486 [inline]
free_pcp_prepare mm/page_alloc.c:1536 [inline]
free_unref_page_prepare+0x8b4/0x9a0 mm/page_alloc.c:3413
free_unref_page_list+0xbb/0x8e0 mm/page_alloc.c:3554
release_pages+0x1fa6/0x2220 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+0x352/0x1090 mm/truncate.c:397
kill_bdev block/bdev.c:76 [inline]
blkdev_flush_mapping+0x12c/0x290 block/bdev.c:681
blkdev_put_whole block/bdev.c:712 [inline]
blkdev_put+0x47f/0x710 block/bdev.c:972
blkdev_close+0x51/0x80 block/fops.c:514
__fput+0x22c/0x920 fs/file_table.c:320
task_work_run+0x1d0/0x260 kernel/task_work.c:203
resume_user_mode_work include/linux/resume_user_mode.h:49 [inline]
exit_to_user_mode_loop+0xe6/0x110 kernel/entry/common.c:177
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:82
entry_SYSCALL_64_after_hwframe+0x68/0xd2
Modules linked in:
CPU: 1 PID: 4276 Comm: syz-executor Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026
Call Trace:
dump_stack_lvl+0x188/0x24e lib/dump_stack.c:106
bad_page+0x14b/0x170 mm/page_alloc.c:726
free_page_is_bad mm/page_alloc.c:1318 [inline]
free_pages_prepare mm/page_alloc.c:1479 [inline]
free_pcp_prepare mm/page_alloc.c:1536 [inline]
free_unref_page_prepare+0x42a/0x9a0 mm/page_alloc.c:3413
free_unref_page_list+0xbb/0x8e0 mm/page_alloc.c:3554
release_pages+0x1fa6/0x2220 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+0x352/0x1090 mm/truncate.c:397
dbUnmount+0x105/0x170 fs/jfs/jfs_dmap.c:264
jfs_umount+0x1fa/0x360 fs/jfs/jfs_umount.c:89
jfs_put_super+0x88/0x190 fs/jfs/super.c:194
generic_shutdown_super+0x130/0x340 fs/super.c:501
kill_block_super+0x7c/0xe0 fs/super.c:1470
deactivate_locked_super+0x93/0xf0 fs/super.c:332
cleanup_mnt+0x42c/0x4b0 fs/namespace.c:1191
task_work_run+0x1d0/0x260 kernel/task_work.c:203
resume_user_mode_work include/linux/resume_user_mode.h:49 [inline]
exit_to_user_mode_loop+0xe6/0x110 kernel/entry/common.c:177
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:82
entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7f1d1df9e097
Code: a2 c7 05 5c 06 25 00 00 00 00 00 eb 96 e8 e1 12 00 00 90 31 f6 e9 09 00 00 00 66 0f 1f 84 00 00 00 00 00 b8 a6 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 01 c3 48 c7 c2 e8 ff ff ff f7 d8 64 89 02 b8
RSP: 002b:00007ffe993411e8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
RAX: 0000000000000000 RBX: 00007f1d1e0321ca RCX: 00007f1d1df9e097
RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffe993412a0
RBP: 00007ffe993412a0 R08: 00007ffe993422a0 R09: 00000000ffffffff
R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffe99342330
R13: 00007f1d1e0321ca R14: 000000000001955c R15: 00007ffe99342370
BUG: Bad page state in process syz-executor pfn:1d391
page:ffffea000074e440 refcount:0 mapcount:0 mapping:0000000000000000 index:0x3 pfn:0x1d391
flags: 0xfff18000002046(referenced|uptodate|workingset|private|node=0|zone=1|lastcpupid=0x7ff)
raw: 00fff18000002046 ffffea0001f425c8 ffffc90003ed7960 0000000000000000
raw: 0000000000000003 ffff8880286233e0 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 4553, tgid 4552 (syz.4.47), ts 103591171459, free_ts 93870697072
set_page_owner include/linux/page_owner.h:31 [inline]
post_alloc_hook+0x173/0x1a0 mm/page_alloc.c:2559
prep_new_page mm/page_alloc.c:2566 [inline]
get_page_from_freelist+0x1a1e/0x1ab0 mm/page_alloc.c:4357
__alloc_pages+0x1ec/0x4f0 mm/page_alloc.c:5657
folio_alloc+0x1c/0x60 mm/mempolicy.c:2292
filemap_alloc_folio+0xdb/0x480 mm/filemap.c:999
do_read_cache_folio+0x1bb/0x760 mm/filemap.c:3623
do_read_cache_page+0x32/0x220 mm/filemap.c:3701
read_mapping_page include/linux/pagemap.h:793 [inline]
__get_metapage+0x316/0xfa0 fs/jfs/jfs_metapage.c:620
dbAdjCtl+0x144/0xa20 fs/jfs/jfs_dmap.c:2483
dbAllocDmap fs/jfs/jfs_dmap.c:2044 [inline]
dbAllocDmapLev+0x209/0x3c0 fs/jfs/jfs_dmap.c:1988
dbAllocCtl+0x148/0x9b0 fs/jfs/jfs_dmap.c:1825
dbAllocAG+0x1e7/0xfe0 fs/jfs/jfs_dmap.c:1353
dbDiscardAG+0x2c5/0x8e0 fs/jfs/jfs_dmap.c:1608
jfs_ioc_trim+0x42b/0x660 fs/jfs/jfs_discard.c:105
jfs_ioctl+0x28f/0x3b0 fs/jfs/ioctl.c:131
vfs_ioctl fs/ioctl.c:51 [inline]
__do_sys_ioctl fs/ioctl.c:870 [inline]
__se_sys_ioctl+0xfa/0x170 fs/ioctl.c:856
page last free stack trace:
reset_page_owner include/linux/page_owner.h:24 [inline]
free_pages_prepare mm/page_alloc.c:1486 [inline]
free_pcp_prepare mm/page_alloc.c:1536 [inline]
free_unref_page_prepare+0x8b4/0x9a0 mm/page_alloc.c:3413
free_unref_page_list+0xbb/0x8e0 mm/page_alloc.c:3554
release_pages+0x1fa6/0x2220 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+0x352/0x1090 mm/truncate.c:397
kill_bdev block/bdev.c:76 [inline]
blkdev_flush_mapping+0x12c/0x290 block/bdev.c:681
blkdev_put_whole block/bdev.c:712 [inline]
blkdev_put+0x47f/0x710 block/bdev.c:972
blkdev_close+0x51/0x80 block/fops.c:514
__fput+0x22c/0x920 fs/file_table.c:320
task_work_run+0x1d0/0x260 kernel/task_work.c:203
resume_user_mode_work include/linux/resume_user_mode.h:49 [inline]
exit_to_user_mode_loop+0xe6/0x110 kernel/entry/common.c:177
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:82
entry_SYSCALL_64_after_hwframe+0x68/0xd2
Modules linked in:
CPU: 1 PID: 4276 Comm: syz-executor Tainted: G B syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026
Call Trace:
dump_stack_lvl+0x188/0x24e lib/dump_stack.c:106
bad_page+0x14b/0x170 mm/page_alloc.c:726
free_page_is_bad mm/page_alloc.c:1318 [inline]
free_pages_prepare mm/page_alloc.c:1479 [inline]
free_pcp_prepare mm/page_alloc.c:1536 [inline]
free_unref_page_prepare+0x42a/0x9a0 mm/page_alloc.c:3413
free_unref_page_list+0xbb/0x8e0 mm/page_alloc.c:3554
release_pages+0x1fa6/0x2220 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+0x352/0x1090 mm/truncate.c:397
dbUnmount+0x105/0x170 fs/jfs/jfs_dmap.c:264
jfs_umount+0x1fa/0x360 fs/jfs/jfs_umount.c:89
jfs_put_super+0x88/0x190 fs/jfs/super.c:194
generic_shutdown_super+0x130/0x340 fs/super.c:501
kill_block_super+0x7c/0xe0 fs/super.c:1470
deactivate_locked_super+0x93/0xf0 fs/super.c:332
cleanup_mnt+0x42c/0x4b0 fs/namespace.c:1191
task_work_run+0x1d0/0x260 kernel/task_work.c:203
resume_user_mode_work include/linux/resume_user_mode.h:49 [inline]
exit_to_user_mode_loop+0xe6/0x110 kernel/entry/common.c:177
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:82
entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7f1d1df9e097
Code: a2 c7 05 5c 06 25 00 00 00 00 00 eb 96 e8 e1 12 00 00 90 31 f6 e9 09 00 00 00 66 0f 1f 84 00 00 00 00 00 b8 a6 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 01 c3 48 c7 c2 e8 ff ff ff f7 d8 64 89 02 b8
RSP: 002b:00007ffe993411e8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
RAX: 0000000000000000 RBX: 00007f1d1e0321ca RCX: 00007f1d1df9e097
RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffe993412a0
RBP: 00007ffe993412a0 R08: 00007ffe993422a0 R09: 00000000ffffffff
R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffe99342330
R13: 00007f1d1e0321ca R14: 000000000001955c R15: 00007ffe99342370
EXT4-fs (loop4): unmounting filesystem.