... Log Wrap ... Log Wrap ... Log Wrap ...
BUG: Bad page state in process syz.2.37  pfn:2f80f
page:ffffea0000be03c0 refcount:0 mapcount:0 mapping:0000000000000000 index:0x1c pfn:0x2f80f
flags: 0xfff0800000820d(locked|referenced|uptodate|workingset|private|node=0|zone=1|lastcpupid=0x7ff)
page_type: 0xffffffff()
raw: 00fff0800000820d dead000000000100 dead000000000122 0000000000000000
raw: 000000000000001c ffff888076ba3aa8 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 6119, tgid 6118 (syz.2.37), ts 113272567726, free_ts 113156871774
 set_page_owner include/linux/page_owner.h:31 [inline]
 post_alloc_hook+0x1cd/0x210 mm/page_alloc.c:1554
 prep_new_page mm/page_alloc.c:1561 [inline]
 get_page_from_freelist+0x195c/0x19f0 mm/page_alloc.c:3191
 __alloc_pages+0x1e3/0x460 mm/page_alloc.c:4457
 folio_alloc+0x1e/0x30 mm/mempolicy.c:2291
 filemap_alloc_folio+0xdf/0x470 mm/filemap.c:1004
 do_read_cache_folio+0x36c/0x7e0 mm/filemap.c:3753
 do_read_cache_page+0x32/0x250 mm/filemap.c:3855
 read_mapping_page include/linux/pagemap.h:892 [inline]
 __get_metapage+0x31a/0xfa0 fs/jfs/jfs_metapage.c:620
 diRead+0x6d3/0xb90 fs/jfs/jfs_imap.c:367
 jfs_iget+0x8d/0x3c0 fs/jfs/inode.c:35
 jfs_fill_super+0x70c/0xac0 fs/jfs/super.c:580
 mount_bdev+0x22b/0x2d0 fs/super.c:1643
 legacy_get_tree+0xea/0x180 fs/fs_context.c:662
 vfs_get_tree+0x8c/0x280 fs/super.c:1764
 do_new_mount+0x24b/0xa40 fs/namespace.c:3377
 do_mount fs/namespace.c:3717 [inline]
 __do_sys_mount fs/namespace.c:3926 [inline]
 __se_sys_mount+0x2da/0x3c0 fs/namespace.c:3903
page last free stack trace:
 reset_page_owner include/linux/page_owner.h:24 [inline]
 free_pages_prepare mm/page_alloc.c:1154 [inline]
 free_unref_page_prepare+0x7ce/0x8e0 mm/page_alloc.c:2336
 free_unref_page_list+0xbe/0x860 mm/page_alloc.c:2475
 release_pages+0x1fa0/0x2220 mm/swap.c:1022
 tlb_batch_pages_flush mm/mmu_gather.c:98 [inline]
 tlb_flush_mmu_free mm/mmu_gather.c:293 [inline]
 tlb_flush_mmu+0x368/0x4f0 mm/mmu_gather.c:300
 tlb_finish_mmu+0xc3/0x1d0 mm/mmu_gather.c:392
 unmap_region+0x2ed/0x340 mm/mmap.c:2349
 do_vmi_align_munmap+0xffe/0x1660 mm/mmap.c:2592
 do_vmi_munmap+0x252/0x2d0 mm/mmap.c:2660
 __vm_munmap+0x193/0x3c0 mm/mmap.c:2961
 __do_sys_munmap mm/mmap.c:2978 [inline]
 __se_sys_munmap mm/mmap.c:2975 [inline]
 __x64_sys_munmap+0x60/0x70 mm/mmap.c:2975
 do_syscall_x64 arch/x86/entry/common.c:51 [inline]
 do_syscall_64+0x55/0xb0 arch/x86/entry/common.c:81
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
Modules linked in:
CPU: 1 PID: 6119 Comm: syz.2.37 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/18/2025
Call Trace:
 <TASK>
 dump_stack_lvl+0x16c/0x230 lib/dump_stack.c:106
 bad_page+0x14b/0x170 mm/page_alloc.c:512
 free_page_is_bad mm/page_alloc.c:961 [inline]
 free_pages_prepare mm/page_alloc.c:1146 [inline]
 free_unref_page_prepare+0x887/0x8e0 mm/page_alloc.c:2336
 free_unref_page+0x32/0x2e0 mm/page_alloc.c:2429
 txUnlock+0x27e/0xcb0 fs/jfs/jfs_txnmgr.c:932
 txCommit+0x4dbd/0x5250 fs/jfs/jfs_txnmgr.c:1335
 jfs_commit_inode+0x2f0/0x520 fs/jfs/inode.c:108
 jfs_fsync+0x185/0x1b0 fs/jfs/file.c:37
 generic_write_sync include/linux/fs.h:2651 [inline]
 generic_file_write_iter+0x261/0x2e0 mm/filemap.c:4141
 call_write_iter include/linux/fs.h:2018 [inline]
 new_sync_write fs/read_write.c:491 [inline]
 vfs_write+0x43b/0x940 fs/read_write.c:584
 ksys_pwrite64 fs/read_write.c:699 [inline]
 __do_sys_pwrite64 fs/read_write.c:709 [inline]
 __se_sys_pwrite64 fs/read_write.c:706 [inline]
 __x64_sys_pwrite64+0x195/0x220 fs/read_write.c:706
 do_syscall_x64 arch/x86/entry/common.c:51 [inline]
 do_syscall_64+0x55/0xb0 arch/x86/entry/common.c:81
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7f406a38eba9
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:00007f406b296038 EFLAGS: 00000246 ORIG_RAX: 0000000000000012
RAX: ffffffffffffffda RBX: 00007f406a5d5fa0 RCX: 00007f406a38eba9
RDX: 000000000000fdef RSI: 0000200000000140 RDI: 0000000000000004
RBP: 00007f406a411e19 R08: 0000000000000000 R09: 0000000000000000
R10: 000000000000fecc R11: 0000000000000246 R12: 0000000000000000
R13: 00007f406a5d6038 R14: 00007f406a5d5fa0 R15: 00007ffe85a8e008
 </TASK>
page:ffffea0000be03c0 refcount:0 mapcount:0 mapping:0000000000000000 index:0x1c pfn:0x2f80f
flags: 0xfff0800000820d(locked|referenced|uptodate|workingset|private|node=0|zone=1|lastcpupid=0x7ff)
page_type: 0xffffffff()
raw: 00fff0800000820d dead000000000100 dead000000000122 0000000000000000
raw: 000000000000001c ffff888076ba3aa8 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 6119, tgid 6118 (syz.2.37), ts 113272567726, free_ts 113156871774
 set_page_owner include/linux/page_owner.h:31 [inline]
 post_alloc_hook+0x1cd/0x210 mm/page_alloc.c:1554
 prep_new_page mm/page_alloc.c:1561 [inline]
 get_page_from_freelist+0x195c/0x19f0 mm/page_alloc.c:3191
 __alloc_pages+0x1e3/0x460 mm/page_alloc.c:4457
 folio_alloc+0x1e/0x30 mm/mempolicy.c:2291
 filemap_alloc_folio+0xdf/0x470 mm/filemap.c:1004
 do_read_cache_folio+0x36c/0x7e0 mm/filemap.c:3753
 do_read_cache_page+0x32/0x250 mm/filemap.c:3855
 read_mapping_page include/linux/pagemap.h:892 [inline]
 __get_metapage+0x31a/0xfa0 fs/jfs/jfs_metapage.c:620
 diRead+0x6d3/0xb90 fs/jfs/jfs_imap.c:367
 jfs_iget+0x8d/0x3c0 fs/jfs/inode.c:35
 jfs_fill_super+0x70c/0xac0 fs/jfs/super.c:580
 mount_bdev+0x22b/0x2d0 fs/super.c:1643
 legacy_get_tree+0xea/0x180 fs/fs_context.c:662
 vfs_get_tree+0x8c/0x280 fs/super.c:1764
 do_new_mount+0x24b/0xa40 fs/namespace.c:3377
 do_mount fs/namespace.c:3717 [inline]
 __do_sys_mount fs/namespace.c:3926 [inline]
 __se_sys_mount+0x2da/0x3c0 fs/namespace.c:3903
page last free stack trace:
 reset_page_owner include/linux/page_owner.h:24 [inline]
 free_pages_prepare mm/page_alloc.c:1154 [inline]
 free_unref_page_prepare+0x7ce/0x8e0 mm/page_alloc.c:2336
 free_unref_page_list+0xbe/0x860 mm/page_alloc.c:2475
 release_pages+0x1fa0/0x2220 mm/swap.c:1022
 tlb_batch_pages_flush mm/mmu_gather.c:98 [inline]
 tlb_flush_mmu_free mm/mmu_gather.c:293 [inline]
 tlb_flush_mmu+0x368/0x4f0 mm/mmu_gather.c:300
 tlb_finish_mmu+0xc3/0x1d0 mm/mmu_gather.c:392
 unmap_region+0x2ed/0x340 mm/mmap.c:2349
 do_vmi_align_munmap+0xffe/0x1660 mm/mmap.c:2592
 do_vmi_munmap+0x252/0x2d0 mm/mmap.c:2660
 __vm_munmap+0x193/0x3c0 mm/mmap.c:2961
 __do_sys_munmap mm/mmap.c:2978 [inline]
 __se_sys_munmap mm/mmap.c:2975 [inline]
 __x64_sys_munmap+0x60/0x70 mm/mmap.c:2975
 do_syscall_x64 arch/x86/entry/common.c:51 [inline]
 do_syscall_64+0x55/0xb0 arch/x86/entry/common.c:81
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
------------[ cut here ]------------
kernel BUG at include/linux/mm.h:1458!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
CPU: 0 PID: 6119 Comm: syz.2.37 Tainted: G    B              syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/18/2025
RIP: 0010:folio_get include/linux/mm.h:1458 [inline]
RIP: 0010:get_page include/linux/mm.h:1464 [inline]
RIP: 0010:put_metapage+0x253/0x340 fs/jfs/jfs_metapage.c:750
Code: 38 c1 0f 8c 32 ff ff ff 4c 89 ef e8 d7 54 dd fe e9 25 ff ff ff e8 cd 09 86 fe 48 8b 3c 24 48 c7 c6 40 fe e3 8a e8 dd cb c5 fe <0f> 0b f3 0f 1e fa 4c 8b 2c 24 4c 89 ee 48 81 e6 ff 0f 00 00 31 ff
RSP: 0018:ffffc900055678e0 EFLAGS: 00010246
RAX: 5e01aad6f6ae2600 RBX: ffff888076ba3aa8 RCX: 5e01aad6f6ae2600
RDX: 0000000000000000 RSI: ffffffff8afc72a0 RDI: ffffffff8afc7260
RBP: 000000000000007f R08: ffffffff8e4a94ef R09: 1ffffffff1c9529d
R10: dffffc0000000000 R11: fffffbfff1c9529e R12: ffff888076ba3ad0
R13: ffffea0000be03f4 R14: 1ffff1100ed7475a R15: 1ffff1100ed74767
FS:  00007f406b2966c0(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055ceff4dd1f0 CR3: 000000005f60d000 CR4: 00000000003506f0
Call Trace:
 <TASK>
 txUnlock+0x427/0xcb0 fs/jfs/jfs_txnmgr.c:947
 txCommit+0x4dbd/0x5250 fs/jfs/jfs_txnmgr.c:1335
 jfs_commit_inode+0x2f0/0x520 fs/jfs/inode.c:108
 jfs_fsync+0x185/0x1b0 fs/jfs/file.c:37
 generic_write_sync include/linux/fs.h:2651 [inline]
 generic_file_write_iter+0x261/0x2e0 mm/filemap.c:4141
 call_write_iter include/linux/fs.h:2018 [inline]
 new_sync_write fs/read_write.c:491 [inline]
 vfs_write+0x43b/0x940 fs/read_write.c:584
 ksys_pwrite64 fs/read_write.c:699 [inline]
 __do_sys_pwrite64 fs/read_write.c:709 [inline]
 __se_sys_pwrite64 fs/read_write.c:706 [inline]
 __x64_sys_pwrite64+0x195/0x220 fs/read_write.c:706
 do_syscall_x64 arch/x86/entry/common.c:51 [inline]
 do_syscall_64+0x55/0xb0 arch/x86/entry/common.c:81
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7f406a38eba9
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:00007f406b296038 EFLAGS: 00000246 ORIG_RAX: 0000000000000012
RAX: ffffffffffffffda RBX: 00007f406a5d5fa0 RCX: 00007f406a38eba9
RDX: 000000000000fdef RSI: 0000200000000140 RDI: 0000000000000004
RBP: 00007f406a411e19 R08: 0000000000000000 R09: 0000000000000000
R10: 000000000000fecc R11: 0000000000000246 R12: 0000000000000000
R13: 00007f406a5d6038 R14: 00007f406a5d5fa0 R15: 00007ffe85a8e008
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:folio_get include/linux/mm.h:1458 [inline]
RIP: 0010:get_page include/linux/mm.h:1464 [inline]
RIP: 0010:put_metapage+0x253/0x340 fs/jfs/jfs_metapage.c:750
Code: 38 c1 0f 8c 32 ff ff ff 4c 89 ef e8 d7 54 dd fe e9 25 ff ff ff e8 cd 09 86 fe 48 8b 3c 24 48 c7 c6 40 fe e3 8a e8 dd cb c5 fe <0f> 0b f3 0f 1e fa 4c 8b 2c 24 4c 89 ee 48 81 e6 ff 0f 00 00 31 ff
RSP: 0018:ffffc900055678e0 EFLAGS: 00010246
RAX: 5e01aad6f6ae2600 RBX: ffff888076ba3aa8 RCX: 5e01aad6f6ae2600
RDX: 0000000000000000 RSI: ffffffff8afc72a0 RDI: ffffffff8afc7260
RBP: 000000000000007f R08: ffffffff8e4a94ef R09: 1ffffffff1c9529d
R10: dffffc0000000000 R11: fffffbfff1c9529e R12: ffff888076ba3ad0
R13: ffffea0000be03f4 R14: 1ffff1100ed7475a R15: 1ffff1100ed74767
FS:  00007f406b2966c0(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055ceff4dd1f0 CR3: 000000005f60d000 CR4: 00000000003506f0