ERROR: (device loop4): remounting filesystem as read-only UFO tlock:0xffffc9000287a090 BUG: Bad page state in process syz.4.95 pfn:2f38f page:ffffea0000bce3c0 refcount:0 mapcount:0 mapping:0000000000000000 index:0x8ed2f pfn:0x2f38f flags: 0xfff00000002006(referenced|uptodate|private|node=0|zone=1|lastcpupid=0x7ff) raw: 00fff00000002006 ffffea0001cc8408 ffffc9000373f980 0000000000000000 raw: 000000000008ed2f ffff88801e3440f8 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 4741, tgid 4740 (syz.4.95), ts 123038690141, free_ts 118765558013 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:3250 __mmput+0x118/0x3c0 kernel/fork.c:1200 exit_mm+0x1e6/0x2c0 kernel/exit.c:565 do_exit+0x8b9/0x2400 kernel/exit.c:858 do_group_exit+0x217/0x2d0 kernel/exit.c:1021 get_signal+0x1272/0x1350 kernel/signal.c:2871 arch_do_signal_or_restart+0xb0/0x1230 arch/x86/kernel/signal.c:871 exit_to_user_mode_loop+0x70/0x110 kernel/entry/common.c:174 exit_to_user_mode_prepare+0xb1/0x140 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:87 Modules linked in: CPU: 0 PID: 4741 Comm: syz.4.95 Not tainted 6.1.141-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 Call Trace: 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:2710 [inline] path_mount+0xdfd/0x1010 fs/namespace.c:3376 do_mount fs/namespace.c:3397 [inline] __do_sys_mount fs/namespace.c:3605 [inline] __se_sys_mount+0x2d6/0x3c0 fs/namespace.c:3582 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: 0033:0x7f39c778e929 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:00007f39c85d4038 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 00007f39c79b5fa0 RCX: 00007f39c778e929 RDX: 0000000000000000 RSI: 0000200000000000 RDI: 0000000000000000 RBP: 00007f39c7810b39 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000002236824 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007f39c79b5fa0 R15: 00007ffe9b812478 BUG: Bad page state in process syz.4.95 pfn:73210 page:ffffea0001cc8400 refcount:0 mapcount:0 mapping:0000000000000000 index:0x8ed2e pfn:0x73210 flags: 0xfff00000002006(referenced|uptodate|private|node=0|zone=1|lastcpupid=0x7ff) raw: 00fff00000002006 ffffea0001eca588 ffffc9000373f980 0000000000000000 raw: 000000000008ed2e ffff88801e344000 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 4741, tgid 4740 (syz.4.95), ts 123038506764, free_ts 118765570620 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:3250 __mmput+0x118/0x3c0 kernel/fork.c:1200 exit_mm+0x1e6/0x2c0 kernel/exit.c:565 do_exit+0x8b9/0x2400 kernel/exit.c:858 do_group_exit+0x217/0x2d0 kernel/exit.c:1021 get_signal+0x1272/0x1350 kernel/signal.c:2871 arch_do_signal_or_restart+0xb0/0x1230 arch/x86/kernel/signal.c:871 exit_to_user_mode_loop+0x70/0x110 kernel/entry/common.c:174 exit_to_user_mode_prepare+0xb1/0x140 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:87 Modules linked in: CPU: 0 PID: 4741 Comm: syz.4.95 Tainted: G B 6.1.141-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 Call Trace: 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:2710 [inline] path_mount+0xdfd/0x1010 fs/namespace.c:3376 do_mount fs/namespace.c:3397 [inline] __do_sys_mount fs/namespace.c:3605 [inline] __se_sys_mount+0x2d6/0x3c0 fs/namespace.c:3582 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: 0033:0x7f39c778e929 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:00007f39c85d4038 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 00007f39c79b5fa0 RCX: 00007f39c778e929 RDX: 0000000000000000 RSI: 0000200000000000 RDI: 0000000000000000 RBP: 00007f39c7810b39 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000002236824 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007f39c79b5fa0 R15: 00007ffe9b812478 BUG: Bad page state in process syz.4.95 pfn:7b296 page:ffffea0001eca580 refcount:0 mapcount:0 mapping:0000000000000000 index:0x8ed2d pfn:0x7b296 flags: 0xfff00000002006(referenced|uptodate|private|node=0|zone=1|lastcpupid=0x7ff) raw: 00fff00000002006 ffffea00007ac348 ffffc9000373f980 0000000000000000 raw: 000000000008ed2d ffff88807899c000 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 4741, tgid 4740 (syz.4.95), ts 123038456064, free_ts 118765576491 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:3250 __mmput+0x118/0x3c0 kernel/fork.c:1200 exit_mm+0x1e6/0x2c0 kernel/exit.c:565 do_exit+0x8b9/0x2400 kernel/exit.c:858 do_group_exit+0x217/0x2d0 kernel/exit.c:1021 get_signal+0x1272/0x1350 kernel/signal.c:2871 arch_do_signal_or_restart+0xb0/0x1230 arch/x86/kernel/signal.c:871 exit_to_user_mode_loop+0x70/0x110 kernel/entry/common.c:174 exit_to_user_mode_prepare+0xb1/0x140 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:87 Modules linked in: CPU: 0 PID: 4741 Comm: syz.4.95 Tainted: G B 6.1.141-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 Call Trace: 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:2710 [inline] path_mount+0xdfd/0x1010 fs/namespace.c:3376 do_mount fs/namespace.c:3397 [inline] __do_sys_mount fs/namespace.c:3605 [inline] __se_sys_mount+0x2d6/0x3c0 fs/namespace.c:3582 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: 0033:0x7f39c778e929 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:00007f39c85d4038 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 00007f39c79b5fa0 RCX: 00007f39c778e929 RDX: 0000000000000000 RSI: 0000200000000000 RDI: 0000000000000000 RBP: 00007f39c7810b39 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000002236824 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007f39c79b5fa0 R15: 00007ffe9b812478 BUG: Bad page state in process syz.4.95 pfn:1eb0d page:ffffea00007ac340 refcount:0 mapcount:0 mapping:0000000000000000 index:0xd pfn:0x1eb0d flags: 0xfff08000002046(referenced|uptodate|workingset|private|node=0|zone=1|lastcpupid=0x7ff) raw: 00fff08000002046 ffffea000166a0c8 ffffc9000373f980 0000000000000000 raw: 000000000000000d ffff88807899c2e8 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 4741, tgid 4740 (syz.4.95), ts 122748280539, free_ts 122689409251 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 diReadSpecial+0x257/0x6f0 fs/jfs/jfs_imap.c:447 jfs_mount+0x3cd/0x860 fs/jfs/jfs_mount.c:166 jfs_fill_super+0x4de/0xac0 fs/jfs/super.c:556 mount_bdev+0x287/0x3c0 fs/super.c:1443 legacy_get_tree+0xe6/0x180 fs/fs_context.c:632 vfs_get_tree+0x88/0x270 fs/super.c:1573 do_new_mount+0x24a/0xa40 fs/namespace.c:3054 do_mount fs/namespace.c:3397 [inline] __do_sys_mount fs/namespace.c:3605 [inline] __se_sys_mount+0x2d6/0x3c0 fs/namespace.c:3582 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 unmap_region+0x272/0x2c0 mm/mmap.c:2331 do_mas_align_munmap+0xc57/0x1220 mm/mmap.c:2580 do_mas_munmap+0x240/0x2b0 mm/mmap.c:2638 __vm_munmap+0x18d/0x290 mm/mmap.c:2924 __do_sys_munmap mm/mmap.c:2949 [inline] __se_sys_munmap mm/mmap.c:2946 [inline] __x64_sys_munmap+0x5c/0x70 mm/mmap.c:2946 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: 4741 Comm: syz.4.95 Tainted: G B 6.1.141-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 Call Trace: 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:2710 [inline] path_mount+0xdfd/0x1010 fs/namespace.c:3376 do_mount fs/namespace.c:3397 [inline] __do_sys_mount fs/namespace.c:3605 [inline] __se_sys_mount+0x2d6/0x3c0 fs/namespace.c:3582 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: 0033:0x7f39c778e929 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:00007f39c85d4038 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 00007f39c79b5fa0 RCX: 00007f39c778e929 RDX: 0000000000000000 RSI: 0000200000000000 RDI: 0000000000000000 RBP: 00007f39c7810b39 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000002236824 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007f39c79b5fa0 R15: 00007ffe9b812478