blkno = 5002c, nblocks = 1
ERROR: (device loop3): dbUpdatePMap: blocks are outside the map
ERROR: (device loop3): remounting filesystem as read-only
BUG: Bad page state in process jfsCommit  pfn:2f9f3
page:ffffea0000be7cc0 refcount:0 mapcount:0 mapping:0000000000000000 index:0x24 pfn:0x2f9f3
flags: 0xfff00000002047(locked|referenced|uptodate|workingset|private|node=0|zone=1|lastcpupid=0x7ff)
raw: 00fff00000002047 dead000000000100 dead000000000122 0000000000000000
raw: 0000000000000024 ffff888079500d90 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 4543, tgid 4542 (syz.3.29), ts 82369789319, free_ts 82351624361
 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
 diRead+0x6e6/0xbb0 fs/jfs/jfs_imap.c:367
 jfs_iget+0x89/0x3f0 fs/jfs/inode.c:35
 jfs_lookup+0x21d/0x420 fs/jfs/namei.c:1469
 __lookup_slow+0x29d/0x3f0 fs/namei.c:1698
 lookup_slow+0x53/0x70 fs/namei.c:1715
 walk_component+0x2ad/0x3e0 fs/namei.c:2006
 lookup_last fs/namei.c:2463 [inline]
 path_lookupat+0x148/0x420 fs/namei.c:2487
 filename_lookup+0x229/0x580 fs/namei.c:2516
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_list+0xbb/0x8e0 mm/page_alloc.c:3555
 release_pages+0x20d1/0x2340 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+0xf0/0x220 mm/mmu_gather.c:394
 exit_mmap+0x388/0x970 mm/mmap.c:3262
 __mmput+0x118/0x3a0 kernel/fork.c:1210
 exec_mmap+0x4bc/0x580 fs/exec.c:1040
 begin_new_exec+0xaca/0x1f40 fs/exec.c:1313
 load_elf_binary+0x9e7/0x2820 fs/binfmt_elf.c:1028
 search_binary_handler fs/exec.c:1770 [inline]
 exec_binprm fs/exec.c:1811 [inline]
 bprm_execve+0xaf7/0x17e0 fs/exec.c:1880
 do_execveat_common+0x501/0x6b0 fs/exec.c:1985
 do_execve fs/exec.c:2059 [inline]
 __do_sys_execve fs/exec.c:2135 [inline]
 __se_sys_execve fs/exec.c:2130 [inline]
 __x64_sys_execve+0x8e/0xa0 fs/exec.c:2130
 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: 109 Comm: jfsCommit Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/16/2026
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:1537 [inline]
 free_unref_page_prepare+0x447/0x9e0 mm/page_alloc.c:3414
 free_unref_page+0x2e/0x3f0 mm/page_alloc.c:3509
 txUnlock+0x275/0xcb0 fs/jfs/jfs_txnmgr.c:933
 txLazyCommit fs/jfs/jfs_txnmgr.c:2683 [inline]
 jfs_lazycommit+0x588/0xa90 fs/jfs/jfs_txnmgr.c:2733
 kthread+0x29d/0x330 kernel/kthread.c:376
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
 </TASK>
page:ffffea0000be7cc0 refcount:0 mapcount:0 mapping:0000000000000000 index:0x24 pfn:0x2f9f3
flags: 0xfff00000002047(locked|referenced|uptodate|workingset|private|node=0|zone=1|lastcpupid=0x7ff)
raw: 00fff00000002047 dead000000000100 dead000000000122 0000000000000000
raw: 0000000000000024 ffff888079500d90 00000000ffffffff 0000000000000000
page dumped because: VM_BUG_ON_FOLIO(((unsigned int) folio_ref_count(folio) + 127u <= 127u))
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 4543, tgid 4542 (syz.3.29), ts 82369789319, free_ts 82351624361
 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
 diRead+0x6e6/0xbb0 fs/jfs/jfs_imap.c:367
 jfs_iget+0x89/0x3f0 fs/jfs/inode.c:35
 jfs_lookup+0x21d/0x420 fs/jfs/namei.c:1469
 __lookup_slow+0x29d/0x3f0 fs/namei.c:1698
 lookup_slow+0x53/0x70 fs/namei.c:1715
 walk_component+0x2ad/0x3e0 fs/namei.c:2006
 lookup_last fs/namei.c:2463 [inline]
 path_lookupat+0x148/0x420 fs/namei.c:2487
 filename_lookup+0x229/0x580 fs/namei.c:2516
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_list+0xbb/0x8e0 mm/page_alloc.c:3555
 release_pages+0x20d1/0x2340 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+0xf0/0x220 mm/mmu_gather.c:394
 exit_mmap+0x388/0x970 mm/mmap.c:3262
 __mmput+0x118/0x3a0 kernel/fork.c:1210
 exec_mmap+0x4bc/0x580 fs/exec.c:1040
 begin_new_exec+0xaca/0x1f40 fs/exec.c:1313
 load_elf_binary+0x9e7/0x2820 fs/binfmt_elf.c:1028
 search_binary_handler fs/exec.c:1770 [inline]
 exec_binprm fs/exec.c:1811 [inline]
 bprm_execve+0xaf7/0x17e0 fs/exec.c:1880
 do_execveat_common+0x501/0x6b0 fs/exec.c:1985
 do_execve fs/exec.c:2059 [inline]
 __do_sys_execve fs/exec.c:2135 [inline]
 __se_sys_execve fs/exec.c:2130 [inline]
 __x64_sys_execve+0x8e/0xa0 fs/exec.c:2130
 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
------------[ cut here ]------------
kernel BUG at include/linux/mm.h:1146!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
CPU: 1 PID: 109 Comm: jfsCommit Tainted: G    B              syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/16/2026
RIP: 0010:folio_get include/linux/mm.h:1146 [inline]
RIP: 0010:get_page include/linux/mm.h:1152 [inline]
RIP: 0010:put_metapage+0x244/0x330 fs/jfs/jfs_metapage.c:721
Code: 38 c1 0f 8c 31 ff ff ff 4c 89 ef e8 36 57 e0 fe e9 24 ff ff ff e8 4c fb 8e fe 48 8b 3c 24 48 c7 c6 c0 27 e6 8a e8 0c 48 ca fe <0f> 0b 48 89 ee 48 81 e6 ff 0f 00 00 31 ff e8 09 ff 8e fe 48 89 2c
RSP: 0018:ffffc90002d37cf0 EFLAGS: 00010246
RAX: 419c2c46ca010900 RBX: ffff888079500d90 RCX: 419c2c46ca010900
RDX: 0000000000000000 RSI: ffffffff8aff71c0 RDI: ffffffff8aff7180
RBP: 000000000000007f R08: ffffffff8f22dfef R09: 1ffffffff1e45bfd
R10: dffffc0000000000 R11: fffffbfff1e45bfe R12: ffff888079500db8
R13: ffffea0000be7cf4 R14: 1ffff1100f2a01b7 R15: 1ffff1100f2a01c4
FS:  0000000000000000(0000) GS:ffff8880b8d00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f2860df62f8 CR3: 000000007d4f0000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 txUnlock+0x426/0xcb0 fs/jfs/jfs_txnmgr.c:948
 txLazyCommit fs/jfs/jfs_txnmgr.c:2683 [inline]
 jfs_lazycommit+0x588/0xa90 fs/jfs/jfs_txnmgr.c:2733
 kthread+0x29d/0x330 kernel/kthread.c:376
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:folio_get include/linux/mm.h:1146 [inline]
RIP: 0010:get_page include/linux/mm.h:1152 [inline]
RIP: 0010:put_metapage+0x244/0x330 fs/jfs/jfs_metapage.c:721
Code: 38 c1 0f 8c 31 ff ff ff 4c 89 ef e8 36 57 e0 fe e9 24 ff ff ff e8 4c fb 8e fe 48 8b 3c 24 48 c7 c6 c0 27 e6 8a e8 0c 48 ca fe <0f> 0b 48 89 ee 48 81 e6 ff 0f 00 00 31 ff e8 09 ff 8e fe 48 89 2c
RSP: 0018:ffffc90002d37cf0 EFLAGS: 00010246
RAX: 419c2c46ca010900 RBX: ffff888079500d90 RCX: 419c2c46ca010900
RDX: 0000000000000000 RSI: ffffffff8aff71c0 RDI: ffffffff8aff7180
RBP: 000000000000007f R08: ffffffff8f22dfef R09: 1ffffffff1e45bfd
R10: dffffc0000000000 R11: fffffbfff1e45bfe R12: ffff888079500db8
R13: ffffea0000be7cf4 R14: 1ffff1100f2a01b7 R15: 1ffff1100f2a01c4
FS:  0000000000000000(0000) GS:ffff8880b8d00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f2860df62f8 CR3: 000000007d4f0000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400