BUG: Bad page state in process syz-executor pfn:5880a
page:ffffea0001620280 refcount:0 mapcount:0 mapping:0000000000000000 index:0x4 pfn:0x5880a
flags: 0xfff18000002046(referenced|uptodate|workingset|private|node=0|zone=1|lastcpupid=0x7ff)
raw: 00fff18000002046 ffffea000168e9c8 ffffc90003f17980 0000000000000000
raw: 0000000000000004 ffff888055012d90 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 6144, tgid 6143 (syz.4.310), ts 193005137080, free_ts 192872122957
set_page_owner include/linux/page_owner.h:31 [inline]
post_alloc_hook+0x173/0x1a0 mm/page_alloc.c:2560
prep_new_page mm/page_alloc.c:2567 [inline]
get_page_from_freelist+0x206b/0x2180 mm/page_alloc.c:4358
__alloc_pages+0x1ec/0x4f0 mm/page_alloc.c:5658
folio_alloc+0x1c/0x60 mm/mempolicy.c:2292
filemap_alloc_folio+0xdb/0x480 mm/filemap.c:999
do_read_cache_folio+0x1b9/0x790 mm/filemap.c:3623
do_read_cache_page+0x32/0x230 mm/filemap.c:3701
read_mapping_page include/linux/pagemap.h:793 [inline]
__get_metapage+0x319/0xfb0 fs/jfs/jfs_metapage.c:620
dbAllocCtl+0xd2/0x980 fs/jfs/jfs_dmap.c:1813
dbAllocAG+0x1f3/0x1000 fs/jfs/jfs_dmap.c:1353
dbDiscardAG+0x2c1/0x8d0 fs/jfs/jfs_dmap.c:1608
jfs_ioc_trim+0x44a/0x6c0 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:1487 [inline]
free_pcp_prepare mm/page_alloc.c:1537 [inline]
free_unref_page_prepare+0x8e5/0x9e0 mm/page_alloc.c:3414
free_unref_page+0x2e/0x3f0 mm/page_alloc.c:3509
__vunmap+0x874/0xa40 mm/vmalloc.c:2726
free_work+0x56/0x80 mm/vmalloc.c:97
process_one_work+0x8ab/0x1160 kernel/workqueue.c:2292
worker_thread+0xaf5/0x12a0 kernel/workqueue.c:2439
kthread+0x29d/0x330 kernel/kthread.c:376
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
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 05/09/2026
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:1537 [inline]
free_unref_page_prepare+0x447/0x9e0 mm/page_alloc.c:3414
free_unref_page_list+0xbb/0x8e0 mm/page_alloc.c:3555
release_pages+0x20d1/0x2340 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+0x35c/0x10b0 mm/truncate.c:397
dbUnmount+0x105/0x170 fs/jfs/jfs_dmap.c:264
jfs_umount+0x1f3/0x360 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+0x471/0x4f0 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: 0033:0x7f856a59e097
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:00007ffef4701de8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
RAX: 0000000000000000 RBX: 00007f856a6322ca RCX: 00007f856a59e097
RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffef4701ea0
RBP: 00007ffef4701ea0 R08: 00007ffef4702ea0 R09: 00000000ffffffff
R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffef4702f30
R13: 00007f856a6322ca R14: 000000000002f1b3 R15: 00007ffef4702f70
BUG: Bad page state in process syz-executor pfn:5a3a7
page:ffffea000168e9c0 refcount:0 mapcount:0 mapping:0000000000000000 index:0x3 pfn:0x5a3a7
flags: 0xfff18000002046(referenced|uptodate|workingset|private|node=0|zone=1|lastcpupid=0x7ff)
raw: 00fff18000002046 ffffea000098bdc8 ffffc90003f17980 0000000000000000
raw: 0000000000000003 ffff888055012e88 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 6144, tgid 6143 (syz.4.310), ts 193006330883, free_ts 192872113402
set_page_owner include/linux/page_owner.h:31 [inline]
post_alloc_hook+0x173/0x1a0 mm/page_alloc.c:2560
prep_new_page mm/page_alloc.c:2567 [inline]
get_page_from_freelist+0x206b/0x2180 mm/page_alloc.c:4358
__alloc_pages+0x1ec/0x4f0 mm/page_alloc.c:5658
folio_alloc+0x1c/0x60 mm/mempolicy.c:2292
filemap_alloc_folio+0xdb/0x480 mm/filemap.c:999
do_read_cache_folio+0x1b9/0x790 mm/filemap.c:3623
do_read_cache_page+0x32/0x230 mm/filemap.c:3701
read_mapping_page include/linux/pagemap.h:793 [inline]
__get_metapage+0x319/0xfb0 fs/jfs/jfs_metapage.c:620
dbAdjCtl+0x139/0xa00 fs/jfs/jfs_dmap.c:2483
dbAllocDmap fs/jfs/jfs_dmap.c:2044 [inline]
dbAllocDmapLev+0x1fc/0x3b0 fs/jfs/jfs_dmap.c:1988
dbAllocCtl+0x143/0x980 fs/jfs/jfs_dmap.c:1825
dbAllocAG+0x1f3/0x1000 fs/jfs/jfs_dmap.c:1353
dbDiscardAG+0x2c1/0x8d0 fs/jfs/jfs_dmap.c:1608
jfs_ioc_trim+0x44a/0x6c0 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:1487 [inline]
free_pcp_prepare mm/page_alloc.c:1537 [inline]
free_unref_page_prepare+0x8e5/0x9e0 mm/page_alloc.c:3414
free_unref_page+0x2e/0x3f0 mm/page_alloc.c:3509
__vunmap+0x874/0xa40 mm/vmalloc.c:2726
free_work+0x56/0x80 mm/vmalloc.c:97
process_one_work+0x8ab/0x1160 kernel/workqueue.c:2292
worker_thread+0xaf5/0x12a0 kernel/workqueue.c:2439
kthread+0x29d/0x330 kernel/kthread.c:376
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
Modules linked in:
CPU: 0 PID: 4276 Comm: syz-executor Tainted: G B syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026
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:1537 [inline]
free_unref_page_prepare+0x447/0x9e0 mm/page_alloc.c:3414
free_unref_page_list+0xbb/0x8e0 mm/page_alloc.c:3555
release_pages+0x20d1/0x2340 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+0x35c/0x10b0 mm/truncate.c:397
dbUnmount+0x105/0x170 fs/jfs/jfs_dmap.c:264
jfs_umount+0x1f3/0x360 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+0x471/0x4f0 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: 0033:0x7f856a59e097
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:00007ffef4701de8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
RAX: 0000000000000000 RBX: 00007f856a6322ca RCX: 00007f856a59e097
RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffef4701ea0
RBP: 00007ffef4701ea0 R08: 00007ffef4702ea0 R09: 00000000ffffffff
R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffef4702f30
R13: 00007f856a6322ca R14: 000000000002f1b3 R15: 00007ffef4702f70
hfs: node 4:3 still has 1 user(s)!