BUG: Bad page state in process syz.2.1404  pfn:2ffc1
page:ffffea0000bff040 refcount:0 mapcount:0 mapping:0000000000000000 index:0x33 pfn:0x2ffc1
flags: 0xfff00000002006(referenced|uptodate|private|node=0|zone=1|lastcpupid=0x7ff)
raw: 00fff00000002006 ffffea00009e0008 ffffc9000ce77980 0000000000000000
raw: 0000000000000033 ffff888020791ba0 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 8182, tgid 8181 (syz.2.1404), ts 204894494771, free_ts 204879095874
 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:4106
 do_mkdirat+0x1d0/0x430 fs/namei.c:4131
 __do_sys_mkdirat fs/namei.c:4146 [inline]
 __se_sys_mkdirat fs/namei.c:4144 [inline]
 __x64_sys_mkdirat+0x85/0x90 fs/namei.c:4144
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_list+0xbb/0x8e0 mm/page_alloc.c:3525
 release_pages+0x1f92/0x2200 mm/swap.c:1035
 tlb_batch_pages_flush mm/mmu_gather.c:59 [inline]
 tlb_flush_mmu_free mm/mmu_gather.c:254 [inline]
 tlb_flush_mmu+0xff/0x210 mm/mmu_gather.c:261
 tlb_finish_mmu+0xbd/0x1c0 mm/mmu_gather.c:361
 exit_mmap+0x343/0x8e0 mm/mmap.c:3258
 __mmput+0x118/0x3c0 kernel/fork.c:1200
 exit_mm+0x1e6/0x2c0 kernel/exit.c:565
 do_exit+0x8c1/0x2400 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:51 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:81
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
Modules linked in:
CPU: 0 PID: 8200 Comm: syz.2.1404 Not tainted 6.1.148-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025
Call Trace:
 <TASK>
 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:2719 [inline]
 path_mount+0xdfd/0x1010 fs/namespace.c:3385
 do_mount fs/namespace.c:3406 [inline]
 __do_sys_mount fs/namespace.c:3614 [inline]
 __se_sys_mount+0x2d6/0x3c0 fs/namespace.c:3591
 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: 0033:0x7f542758ebe9
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f54283e5038 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007f54277b6090 RCX: 00007f542758ebe9
RDX: 0000000000000000 RSI: 0000200000000240 RDI: 0000000000000000
RBP: 00007f5427611e19 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000002200020 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f54277b6128 R14: 00007f54277b6090 R15: 00007ffd08a4fc28
 </TASK>
BUG: Bad page state in process syz.2.1404  pfn:27800
page:ffffea00009e0000 refcount:0 mapcount:0 mapping:0000000000000000 index:0x32 pfn:0x27800
flags: 0xfff00000002006(referenced|uptodate|private|node=0|zone=1|lastcpupid=0x7ff)
raw: 00fff00000002006 ffffea0000769cc8 ffffc9000ce77980 0000000000000000
raw: 0000000000000032 ffff8880207914d8 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 8182, tgid 8181 (syz.2.1404), ts 204894457819, free_ts 204879104486
 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:4106
 do_mkdirat+0x1d0/0x430 fs/namei.c:4131
 __do_sys_mkdirat fs/namei.c:4146 [inline]
 __se_sys_mkdirat fs/namei.c:4144 [inline]
 __x64_sys_mkdirat+0x85/0x90 fs/namei.c:4144
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_list+0xbb/0x8e0 mm/page_alloc.c:3525
 release_pages+0x1f92/0x2200 mm/swap.c:1035
 tlb_batch_pages_flush mm/mmu_gather.c:59 [inline]
 tlb_flush_mmu_free mm/mmu_gather.c:254 [inline]
 tlb_flush_mmu+0xff/0x210 mm/mmu_gather.c:261
 tlb_finish_mmu+0xbd/0x1c0 mm/mmu_gather.c:361
 exit_mmap+0x343/0x8e0 mm/mmap.c:3258
 __mmput+0x118/0x3c0 kernel/fork.c:1200
 exit_mm+0x1e6/0x2c0 kernel/exit.c:565
 do_exit+0x8c1/0x2400 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:51 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:81
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
Modules linked in:
CPU: 0 PID: 8200 Comm: syz.2.1404 Tainted: G    B              6.1.148-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025
Call Trace:
 <TASK>
 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:2719 [inline]
 path_mount+0xdfd/0x1010 fs/namespace.c:3385
 do_mount fs/namespace.c:3406 [inline]
 __do_sys_mount fs/namespace.c:3614 [inline]
 __se_sys_mount+0x2d6/0x3c0 fs/namespace.c:3591
 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: 0033:0x7f542758ebe9
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f54283e5038 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007f54277b6090 RCX: 00007f542758ebe9
RDX: 0000000000000000 RSI: 0000200000000240 RDI: 0000000000000000
RBP: 00007f5427611e19 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000002200020 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f54277b6128 R14: 00007f54277b6090 R15: 00007ffd08a4fc28
 </TASK>
BUG: Bad page state in process syz.2.1404  pfn:1da73
page:ffffea0000769cc0 refcount:0 mapcount:0 mapping:0000000000000000 index:0x31 pfn:0x1da73
flags: 0xfff00000002006(referenced|uptodate|private|node=0|zone=1|lastcpupid=0x7ff)
raw: 00fff00000002006 ffffc9000ce77980 ffffc9000ce77980 0000000000000000
raw: 0000000000000031 ffff8880207919b0 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 8182, tgid 8181 (syz.2.1404), ts 204894420256, free_ts 204879112932
 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:4106
 do_mkdirat+0x1d0/0x430 fs/namei.c:4131
 __do_sys_mkdirat fs/namei.c:4146 [inline]
 __se_sys_mkdirat fs/namei.c:4144 [inline]
 __x64_sys_mkdirat+0x85/0x90 fs/namei.c:4144
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_list+0xbb/0x8e0 mm/page_alloc.c:3525
 release_pages+0x1f92/0x2200 mm/swap.c:1035
 tlb_batch_pages_flush mm/mmu_gather.c:59 [inline]
 tlb_flush_mmu_free mm/mmu_gather.c:254 [inline]
 tlb_flush_mmu+0xff/0x210 mm/mmu_gather.c:261
 tlb_finish_mmu+0xbd/0x1c0 mm/mmu_gather.c:361
 exit_mmap+0x343/0x8e0 mm/mmap.c:3258
 __mmput+0x118/0x3c0 kernel/fork.c:1200
 exit_mm+0x1e6/0x2c0 kernel/exit.c:565
 do_exit+0x8c1/0x2400 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:51 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:81
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
Modules linked in:
CPU: 0 PID: 8200 Comm: syz.2.1404 Tainted: G    B              6.1.148-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025
Call Trace:
 <TASK>
 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:2719 [inline]
 path_mount+0xdfd/0x1010 fs/namespace.c:3385
 do_mount fs/namespace.c:3406 [inline]
 __do_sys_mount fs/namespace.c:3614 [inline]
 __se_sys_mount+0x2d6/0x3c0 fs/namespace.c:3591
 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: 0033:0x7f542758ebe9
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f54283e5038 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007f54277b6090 RCX: 00007f542758ebe9
RDX: 0000000000000000 RSI: 0000200000000240 RDI: 0000000000000000
RBP: 00007f5427611e19 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000002200020 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f54277b6128 R14: 00007f54277b6090 R15: 00007ffd08a4fc28
 </TASK>
BUG: Bad page state in process syz.2.1404  pfn:5e7ea
page:ffffea000179fa80 refcount:0 mapcount:0 mapping:0000000000000000 index:0xd pfn:0x5e7ea
flags: 0xfff00000002006(referenced|uptodate|private|node=0|zone=1|lastcpupid=0x7ff)
raw: 00fff00000002006 ffffc9000ce77980 ffffc9000ce77980 0000000000000000
raw: 000000000000000d ffff888067d17e88 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 8182, tgid 8181 (syz.2.1404), ts 204889912057, free_ts 204879131800
 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
 do_read_cache_folio+0x1bb/0x760 mm/filemap.c:3591
 do_read_cache_page+0x32/0x220 mm/filemap.c:3669
 read_mapping_page include/linux/pagemap.h:791 [inline]
 __get_metapage+0x316/0xfa0 fs/jfs/jfs_metapage.c:620
 diWriteSpecial+0x1b0/0x460 fs/jfs/jfs_imap.c:518
 diSync+0x669/0x890 fs/jfs/jfs_imap.c:251
 diNewIAG fs/jfs/jfs_imap.c:2610 [inline]
 diAllocExt fs/jfs/jfs_imap.c:1905 [inline]
 diAllocAG+0x16e5/0x1c20 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:4106
 do_mkdirat+0x1d0/0x430 fs/namei.c:4131
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_list+0xbb/0x8e0 mm/page_alloc.c:3525
 release_pages+0x1f92/0x2200 mm/swap.c:1035
 tlb_batch_pages_flush mm/mmu_gather.c:59 [inline]
 tlb_flush_mmu_free mm/mmu_gather.c:254 [inline]
 tlb_flush_mmu+0xff/0x210 mm/mmu_gather.c:261
 tlb_finish_mmu+0xbd/0x1c0 mm/mmu_gather.c:361
 exit_mmap+0x343/0x8e0 mm/mmap.c:3258
 __mmput+0x118/0x3c0 kernel/fork.c:1200
 exit_mm+0x1e6/0x2c0 kernel/exit.c:565
 do_exit+0x8c1/0x2400 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:51 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:81
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
Modules linked in:
CPU: 0 PID: 8200 Comm: syz.2.1404 Tainted: G    B              6.1.148-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025
Call Trace:
 <TASK>
 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+0xc94/0xff0 mm/truncate.c:430
 jfs_remount+0x337/0x5a0 fs/jfs/super.c:451
 reconfigure_super+0x219/0x880 fs/super.c:977
 do_remount fs/namespace.c:2719 [inline]
 path_mount+0xdfd/0x1010 fs/namespace.c:3385
 do_mount fs/namespace.c:3406 [inline]
 __do_sys_mount fs/namespace.c:3614 [inline]
 __se_sys_mount+0x2d6/0x3c0 fs/namespace.c:3591
 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: 0033:0x7f542758ebe9
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f54283e5038 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007f54277b6090 RCX: 00007f542758ebe9
RDX: 0000000000000000 RSI: 0000200000000240 RDI: 0000000000000000
RBP: 00007f5427611e19 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000002200020 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f54277b6128 R14: 00007f54277b6090 R15: 00007ffd08a4fc28
 </TASK>