loop0: detected capacity change from 0 to 32768
jfs_mkdir: dtInsert returned -EIO
ERROR: (device loop0): jfs_mkdir: 
ERROR: (device loop0): remounting filesystem as read-only
BUG: Bad page state in process syz.0.824  pfn:48c6c
page:ffffea0001231b00 refcount:0 mapcount:0 mapping:0000000000000000 index:0x2f pfn:0x48c6c
flags: 0xfff00000002006(referenced|uptodate|private|node=0|zone=1|lastcpupid=0x7ff)
raw: 00fff00000002006 ffffea0001598508 ffffc90005de7980 0000000000000000
raw: 000000000000002f ffff888029d1ee88 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 7825, tgid 7823 (syz.0.824), ts 404372911184, free_ts 404358569846
 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
 __filemap_get_folio+0x6ab/0xdb0 mm/filemap.c:1993
 pagecache_get_page+0x26/0x250 mm/folio-compat.c:110
 find_or_create_page include/linux/pagemap.h:648 [inline]
 grab_cache_page include/linux/pagemap.h:780 [inline]
 __get_metapage+0x2a4/0xfa0 fs/jfs/jfs_metapage.c:613
 diNewExt+0x9f1/0x2cc0 fs/jfs/jfs_imap.c:2275
 diAllocExt fs/jfs/jfs_imap.c:1952 [inline]
 diAllocAG+0xe19/0x1c30 fs/jfs/jfs_imap.c:1669
 diAlloc+0x1c9/0x1900 fs/jfs/jfs_imap.c:1590
 ialloc+0x88/0x950 fs/jfs/jfs_inode.c:56
 jfs_mkdir+0x1db/0xad0 fs/jfs/namei.c:225
 vfs_mkdir+0x387/0x570 fs/namei.c:4114
 do_mkdirat+0x1d8/0x440 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: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
 tlb_batch_pages_flush mm/mmu_gather.c:60 [inline]
 tlb_flush_mmu_free mm/mmu_gather.c:255 [inline]
 tlb_flush_mmu+0x105/0x220 mm/mmu_gather.c:262
 tlb_finish_mmu+0xf5/0x220 mm/mmu_gather.c:394
 exit_mmap+0x384/0x960 mm/mmap.c:3262
 __mmput+0x118/0x3c0 kernel/fork.c:1205
 exit_mm+0x1fe/0x2d0 kernel/exit.c:565
 do_exit+0x905/0x2480 kernel/exit.c:867
 do_group_exit+0x217/0x2d0 kernel/exit.c:1022
 __do_sys_exit_group kernel/exit.c:1033 [inline]
 __se_sys_exit_group kernel/exit.c:1031 [inline]
 __x64_sys_exit_group+0x3b/0x40 kernel/exit.c:1031
 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
Modules linked in:
CPU: 1 PID: 7825 Comm: syz.0.824 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026
Call Trace:
 <TASK>
 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
 jfs_remount+0x33d/0x5b0 fs/jfs/super.c:451
 reconfigure_super+0x219/0x8a0 fs/super.c:977
 do_remount fs/namespace.c:2741 [inline]
 path_mount+0xe13/0x1020 fs/namespace.c:3400
 do_mount fs/namespace.c:3421 [inline]
 __do_sys_mount fs/namespace.c:3629 [inline]
 __se_sys_mount+0x2e3/0x3d0 fs/namespace.c:3606
 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
RIP: 0033:0x7fc8a479cdd9
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 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:00007fc8a55bc028 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007fc8a4a15fa0 RCX: 00007fc8a479cdd9
RDX: 0000000000000000 RSI: 0000200000000180 RDI: 0000000000000000
RBP: 00007fc8a4832d69 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000002390024 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fc8a4a16038 R14: 00007fc8a4a15fa0 R15: 00007ffc4e751108
 </TASK>
BUG: Bad page state in process syz.0.824  pfn:56614
page:ffffea0001598500 refcount:0 mapcount:0 mapping:0000000000000000 index:0x2e pfn:0x56614
flags: 0xfff00000002006(referenced|uptodate|private|node=0|zone=1|lastcpupid=0x7ff)
raw: 00fff00000002006 ffffea0001590f08 ffffc90005de7980 0000000000000000
raw: 000000000000002e ffff888029d1ed90 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 7825, tgid 7823 (syz.0.824), ts 404372885054, free_ts 404358575444
 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
 __filemap_get_folio+0x6ab/0xdb0 mm/filemap.c:1993
 pagecache_get_page+0x26/0x250 mm/folio-compat.c:110
 find_or_create_page include/linux/pagemap.h:648 [inline]
 grab_cache_page include/linux/pagemap.h:780 [inline]
 __get_metapage+0x2a4/0xfa0 fs/jfs/jfs_metapage.c:613
 diNewExt+0x9f1/0x2cc0 fs/jfs/jfs_imap.c:2275
 diAllocExt fs/jfs/jfs_imap.c:1952 [inline]
 diAllocAG+0xe19/0x1c30 fs/jfs/jfs_imap.c:1669
 diAlloc+0x1c9/0x1900 fs/jfs/jfs_imap.c:1590
 ialloc+0x88/0x950 fs/jfs/jfs_inode.c:56
 jfs_mkdir+0x1db/0xad0 fs/jfs/namei.c:225
 vfs_mkdir+0x387/0x570 fs/namei.c:4114
 do_mkdirat+0x1d8/0x440 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: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
 tlb_batch_pages_flush mm/mmu_gather.c:60 [inline]
 tlb_flush_mmu_free mm/mmu_gather.c:255 [inline]
 tlb_flush_mmu+0x105/0x220 mm/mmu_gather.c:262
 tlb_finish_mmu+0xf5/0x220 mm/mmu_gather.c:394
 exit_mmap+0x384/0x960 mm/mmap.c:3262
 __mmput+0x118/0x3c0 kernel/fork.c:1205
 exit_mm+0x1fe/0x2d0 kernel/exit.c:565
 do_exit+0x905/0x2480 kernel/exit.c:867
 do_group_exit+0x217/0x2d0 kernel/exit.c:1022
 __do_sys_exit_group kernel/exit.c:1033 [inline]
 __se_sys_exit_group kernel/exit.c:1031 [inline]
 __x64_sys_exit_group+0x3b/0x40 kernel/exit.c:1031
 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
Modules linked in:
CPU: 0 PID: 7825 Comm: syz.0.824 Tainted: G    B              syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026
Call Trace:
 <TASK>
 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
 jfs_remount+0x33d/0x5b0 fs/jfs/super.c:451
 reconfigure_super+0x219/0x8a0 fs/super.c:977
 do_remount fs/namespace.c:2741 [inline]
 path_mount+0xe13/0x1020 fs/namespace.c:3400
 do_mount fs/namespace.c:3421 [inline]
 __do_sys_mount fs/namespace.c:3629 [inline]
 __se_sys_mount+0x2e3/0x3d0 fs/namespace.c:3606
 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
RIP: 0033:0x7fc8a479cdd9
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 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:00007fc8a55bc028 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007fc8a4a15fa0 RCX: 00007fc8a479cdd9
RDX: 0000000000000000 RSI: 0000200000000180 RDI: 0000000000000000
RBP: 00007fc8a4832d69 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000002390024 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fc8a4a16038 R14: 00007fc8a4a15fa0 R15: 00007ffc4e751108
 </TASK>
BUG: Bad page state in process syz.0.824  pfn:5643c
page:ffffea0001590f00 refcount:0 mapcount:0 mapping:0000000000000000 index:0x2d pfn:0x5643c
flags: 0xfff00000002006(referenced|uptodate|private|node=0|zone=1|lastcpupid=0x7ff)
raw: 00fff00000002006 ffffea00015c7ec8 ffffc90005de7980 0000000000000000
raw: 000000000000002d ffff888029d1ec98 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 7825, tgid 7823 (syz.0.824), ts 404372841955, free_ts 404370758780
 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
 __filemap_get_folio+0x6ab/0xdb0 mm/filemap.c:1993
 pagecache_get_page+0x26/0x250 mm/folio-compat.c:110
 find_or_create_page include/linux/pagemap.h:648 [inline]
 grab_cache_page include/linux/pagemap.h:780 [inline]
 __get_metapage+0x2a4/0xfa0 fs/jfs/jfs_metapage.c:613
 diNewExt+0x9f1/0x2cc0 fs/jfs/jfs_imap.c:2275
 diAllocExt fs/jfs/jfs_imap.c:1952 [inline]
 diAllocAG+0xe19/0x1c30 fs/jfs/jfs_imap.c:1669
 diAlloc+0x1c9/0x1900 fs/jfs/jfs_imap.c:1590
 ialloc+0x88/0x950 fs/jfs/jfs_inode.c:56
 jfs_mkdir+0x1db/0xad0 fs/jfs/namei.c:225
 vfs_mkdir+0x387/0x570 fs/namei.c:4114
 do_mkdirat+0x1d8/0x440 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: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+0x2e/0x3f0 mm/page_alloc.c:3508
 __vunmap+0x856/0xa00 mm/vmalloc.c:2726
 __do_replace+0x86d/0x980 net/ipv6/netfilter/ip6_tables.c:1109
 do_replace net/ipv6/netfilter/ip6_tables.c:1160 [inline]
 do_ip6t_set_ctl+0xb44/0xe10 net/ipv6/netfilter/ip6_tables.c:1646
 nf_setsockopt+0x25f/0x280 net/netfilter/nf_sockopt.c:101
 __sys_setsockopt+0x2bf/0x3d0 net/socket.c:2287
 __do_sys_setsockopt net/socket.c:2298 [inline]
 __se_sys_setsockopt net/socket.c:2295 [inline]
 __x64_sys_setsockopt+0xb1/0xc0 net/socket.c:2295
 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
Modules linked in:
CPU: 1 PID: 7825 Comm: syz.0.824 Tainted: G    B              syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026
Call Trace:
 <TASK>
 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
 jfs_remount+0x33d/0x5b0 fs/jfs/super.c:451
 reconfigure_super+0x219/0x8a0 fs/super.c:977
 do_remount fs/namespace.c:2741 [inline]
 path_mount+0xe13/0x1020 fs/namespace.c:3400
 do_mount fs/namespace.c:3421 [inline]
 __do_sys_mount fs/namespace.c:3629 [inline]
 __se_sys_mount+0x2e3/0x3d0 fs/namespace.c:3606
 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
RIP: 0033:0x7fc8a479cdd9
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 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:00007fc8a55bc028 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007fc8a4a15fa0 RCX: 00007fc8a479cdd9
RDX: 0000000000000000 RSI: 0000200000000180 RDI: 0000000000000000
RBP: 00007fc8a4832d69 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000002390024 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fc8a4a16038 R14: 00007fc8a4a15fa0 R15: 00007ffc4e751108
 </TASK>
BUG: Bad page state in process syz.0.824  pfn:571fb
page:ffffea00015c7ec0 refcount:0 mapcount:0 mapping:0000000000000000 index:0x2c pfn:0x571fb
flags: 0xfff00000002006(referenced|uptodate|private|node=0|zone=1|lastcpupid=0x7ff)
raw: 00fff00000002006 ffffea000142a1c8 ffffc90005de7980 0000000000000000
raw: 000000000000002c ffff888029d1eba0 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 7825, tgid 7823 (syz.0.824), ts 404367331917, free_ts 404358730846
 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
 __filemap_get_folio+0x6ab/0xdb0 mm/filemap.c:1993
 pagecache_get_page+0x26/0x250 mm/folio-compat.c:110
 find_or_create_page include/linux/pagemap.h:648 [inline]
 grab_cache_page include/linux/pagemap.h:780 [inline]
 __get_metapage+0x2a4/0xfa0 fs/jfs/jfs_metapage.c:613
 diNewExt+0x9f1/0x2cc0 fs/jfs/jfs_imap.c:2275
 diAllocExt fs/jfs/jfs_imap.c:1952 [inline]
 diAllocAG+0xe19/0x1c30 fs/jfs/jfs_imap.c:1669
 diAlloc+0x1c9/0x1900 fs/jfs/jfs_imap.c:1590
 ialloc+0x88/0x950 fs/jfs/jfs_inode.c:56
 jfs_mkdir+0x1db/0xad0 fs/jfs/namei.c:225
 vfs_mkdir+0x387/0x570 fs/namei.c:4114
 do_mkdirat+0x1d8/0x440 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: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+0x2e/0x3f0 mm/page_alloc.c:3508
 tlb_batch_list_free mm/mmu_gather.c:76 [inline]
 tlb_finish_mmu+0x140/0x220 mm/mmu_gather.c:397
 exit_mmap+0x384/0x960 mm/mmap.c:3262
 __mmput+0x118/0x3c0 kernel/fork.c:1205
 exit_mm+0x1fe/0x2d0 kernel/exit.c:565
 do_exit+0x905/0x2480 kernel/exit.c:867
 do_group_exit+0x217/0x2d0 kernel/exit.c:1022
 __do_sys_exit_group kernel/exit.c:1033 [inline]
 __se_sys_exit_group kernel/exit.c:1031 [inline]
 __x64_sys_exit_group+0x3b/0x40 kernel/exit.c:1031
 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
Modules linked in:
CPU: 1 PID: 7825 Comm: syz.0.824 Tainted: G    B              syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026
Call Trace:
 <TASK>
 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
 jfs_remount+0x33d/0x5b0 fs/jfs/super.c:451
 reconfigure_super+0x219/0x8a0 fs/super.c:977
 do_remount fs/namespace.c:2741 [inline]
 path_mount+0xe13/0x1020 fs/namespace.c:3400
 do_mount fs/namespace.c:3421 [inline]
 __do_sys_mount fs/namespace.c:3629 [inline]
 __se_sys_mount+0x2e3/0x3d0 fs/namespace.c:3606
 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
RIP: 0033:0x7fc8a479cdd9
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 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:00007fc8a55bc028 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007fc8a4a15fa0 RCX: 00007fc8a479cdd9
RDX: 0000000000000000 RSI: 0000200000000180 RDI: 0000000000000000
RBP: 00007fc8a4832d69 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000002390024 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fc8a4a16038 R14: 00007fc8a4a15fa0 R15: 00007ffc4e751108
 </TASK>