BUG: Bad page state in process syz.2.248  pfn:5d295
page:ffffea000174a540 refcount:0 mapcount:0 mapping:0000000000000000 index:0x1c pfn:0x5d295
flags: 0xfff0000000200e(referenced|uptodate|dirty|private|node=0|zone=1|lastcpupid=0x7ff)
raw: 00fff0000000200e ffffea0001f69f08 ffffc90004ca79a0 0000000000000000
raw: 000000000000001c ffff88807bcd2ba0 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 0x100c40(GFP_NOFS|__GFP_HARDWALL), pid 5215, ts 94874358313, free_ts 94870247268
 prep_new_page mm/page_alloc.c:2426 [inline]
 get_page_from_freelist+0x24f6/0x2670 mm/page_alloc.c:4192
 __alloc_pages+0x1ee/0x480 mm/page_alloc.c:5501
 __page_cache_alloc+0xce/0x440 mm/filemap.c:1022
 do_read_cache_page+0x1d4/0x1010 mm/filemap.c:3457
 read_mapping_page include/linux/pagemap.h:515 [inline]
 __get_metapage+0x35d/0x1060 fs/jfs/jfs_metapage.c:621
 diRead+0x6e6/0xbb0 fs/jfs/jfs_imap.c:367
 jfs_iget+0x89/0x3f0 fs/jfs/inode.c:35
 jfs_fill_super+0x702/0xad0 fs/jfs/super.c:585
 mount_bdev+0x28a/0x3c0 fs/super.c:1400
 legacy_get_tree+0xe6/0x180 fs/fs_context.c:611
 vfs_get_tree+0x88/0x270 fs/super.c:1530
 do_new_mount+0x247/0xa40 fs/namespace.c:3034
 do_mount fs/namespace.c:3377 [inline]
 __do_sys_mount fs/namespace.c:3585 [inline]
 __se_sys_mount+0x2e3/0x3d0 fs/namespace.c:3562
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x66/0xd0
page last free stack trace:
 reset_page_owner include/linux/page_owner.h:24 [inline]
 free_pages_prepare mm/page_alloc.c:1340 [inline]
 free_pcp_prepare mm/page_alloc.c:1391 [inline]
 free_unref_page_prepare+0x637/0x6c0 mm/page_alloc.c:3317
 free_unref_page+0x8f/0x2a0 mm/page_alloc.c:3396
 __vunmap+0x8e0/0xa80 mm/vmalloc.c:2628
 copy_entries_to_user net/ipv4/netfilter/ip_tables.c:865 [inline]
 get_entries net/ipv4/netfilter/ip_tables.c:1021 [inline]
 do_ipt_get_ctl+0xe32/0x1110 net/ipv4/netfilter/ip_tables.c:1666
 nf_getsockopt+0x25e/0x280 net/netfilter/nf_sockopt.c:116
 ip_getsockopt+0x1219/0x1660 net/ipv4/ip_sockglue.c:1797
 tcp_getsockopt+0x209/0x2530 net/ipv4/tcp.c:4323
 __sys_getsockopt+0x1b0/0x230 net/socket.c:2257
 __do_sys_getsockopt net/socket.c:2272 [inline]
 __se_sys_getsockopt net/socket.c:2269 [inline]
 __x64_sys_getsockopt+0xb1/0xc0 net/socket.c:2269
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x66/0xd0
Modules linked in:
CPU: 1 PID: 5244 Comm: syz.2.248 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/16/2026
Call Trace:
 <TASK>
 dump_stack_lvl+0x188/0x250 lib/dump_stack.c:106
 bad_page+0x14b/0x170 mm/page_alloc.c:652
 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+0x383/0x6c0 mm/page_alloc.c:3317
 free_unref_page_list+0x119/0x830 mm/page_alloc.c:3433
 release_pages+0x185f/0x1bd0 mm/swap.c:963
 __pagevec_release+0x6d/0xe0 mm/swap.c:983
 pagevec_release include/linux/pagevec.h:81 [inline]
 truncate_inode_pages_range+0x335/0xf90 mm/truncate.c:329
 jfs_remount+0x348/0x5c0 fs/jfs/super.c:456
 reconfigure_super+0x224/0x8d0 fs/super.c:938
 do_remount fs/namespace.c:2697 [inline]
 path_mount+0xc5a/0xfe0 fs/namespace.c:3356
 do_mount fs/namespace.c:3377 [inline]
 __do_sys_mount fs/namespace.c:3585 [inline]
 __se_sys_mount+0x2e3/0x3d0 fs/namespace.c:3562
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7f38d405610a
Code: 48 c7 c2 e8 ff ff ff f7 d8 64 89 02 b8 ff ff ff ff c3 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 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f38d228be58 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007f38d228bee0 RCX: 00007f38d405610a
RDX: 0000200000000f40 RSI: 0000200000000f00 RDI: 0000000000000000
RBP: 0000200000000f40 R08: 00007f38d228bee0 R09: 0000000001a6a038
R10: 0000000001a6a038 R11: 0000000000000246 R12: 0000200000000f00
R13: 00007f38d228bea0 R14: 0000000000000000 R15: 0000200000002cc0
 </TASK>