syzbot

BUG: Bad page state in process jfsCommit  pfn:11804a
page:000000006f04fb8e refcount:0 mapcount:0 mapping:0000000000000000 index:0x1c pfn:0x11804a
flags: 0x5ffc00000002047(locked|referenced|uptodate|workingset|private|node=0|zone=2|lastcpupid=0x7ff)
raw: 05ffc00000002047 dead000000000100 dead000000000122 0000000000000000
raw: 000000000000001c ffff0000cd3309b0 00000000ffffffff 0000000000000000
page dumped because: PAGE_FLAGS_CHECK_AT_FREE flag(s) set
Modules linked in:
CPU: 1 PID: 91 Comm: jfsCommit Not tainted 6.1.30-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/28/2023
Call trace:
 dump_backtrace+0x1c8/0x1f4 arch/arm64/kernel/stacktrace.c:158
 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:165
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0x108/0x170 lib/dump_stack.c:106
 dump_stack+0x1c/0x58 lib/dump_stack.c:113
 bad_page+0x1a4/0x1c4 mm/page_alloc.c:719
 free_page_is_bad_report mm/page_alloc.c:1297 [inline]
 free_page_is_bad mm/page_alloc.c:1307 [inline]
 free_pages_prepare mm/page_alloc.c:1453 [inline]
 free_pcp_prepare mm/page_alloc.c:1510 [inline]
 free_unref_page_prepare+0x348/0x1070 mm/page_alloc.c:3388
 free_unref_page+0x80/0x444 mm/page_alloc.c:3484
 __folio_put_small mm/swap.c:105 [inline]
 __folio_put+0xd0/0x12c mm/swap.c:128
 folio_put include/linux/mm.h:1165 [inline]
 put_page include/linux/mm.h:1217 [inline]
 _metapage_homeok+0x130/0x21c fs/jfs/jfs_metapage.h:119
 txUnlock+0x264/0xbb0 fs/jfs/jfs_txnmgr.c:927
 txLazyCommit fs/jfs/jfs_txnmgr.c:2677 [inline]
 jfs_lazycommit+0x490/0x988 fs/jfs/jfs_txnmgr.c:2727
 kthread+0x250/0x2d8 kernel/kthread.c:376
 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:860
page:000000006f04fb8e refcount:0 mapcount:0 mapping:0000000000000000 index:0x1c pfn:0x11804a
flags: 0x5ffc00000002047(locked|referenced|uptodate|workingset|private|node=0|zone=2|lastcpupid=0x7ff)
raw: 05ffc00000002047 dead000000000100 dead000000000122 0000000000000000
raw: 000000000000001c ffff0000cd3309b0 00000000ffffffff 0000000000000000
page dumped because: VM_BUG_ON_FOLIO(((unsigned int) folio_ref_count(folio) + 127u <= 127u))
------------[ cut here ]------------
kernel BUG at include/linux/mm.h:1129!
Internal error: Oops - BUG: 00000000f2000800 [#1] PREEMPT SMP
Modules linked in:
CPU: 0 PID: 91 Comm: jfsCommit Tainted: G    B              6.1.30-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/28/2023
pstate: 80400005 (Nzcv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--)
pc : folio_get include/linux/mm.h:1129 [inline]
pc : get_page include/linux/mm.h:1135 [inline]
pc : put_metapage+0x278/0x2c4 fs/jfs/jfs_metapage.c:721
lr : folio_get include/linux/mm.h:1129 [inline]
lr : get_page include/linux/mm.h:1135 [inline]
lr : put_metapage+0x278/0x2c4 fs/jfs/jfs_metapage.c:721
sp : ffff80001bfe7ba0
x29: ffff80001bfe7ba0 x28: dfff800000000000 x27: 1fffe00019a6613b
x26: 1fffe00019a66148 x25: dfff800000000000 x24: 000000000000007f
x23: fffffc00036012b4 x22: fffffc0003601280 x21: ffff0000cd3309d8
x20: ffff0000cd330a40 x19: ffff0000cd3309b0 x18: 1fffe000368b6176
x17: 635f6665725f6f69 x16: ffff80001204a9c0 x15: 0000000000000000
x14: 0000000000000000 x13: 0000000000000001 x12: 0000000000000001
x11: ff808000088305e0 x10: 0000000000000000 x9 : ffff8000088305e0
x8 : ffff0000c7431bc0 x7 : 0000000000000001 x6 : 0000000000000001
x5 : ffff80001bfe7418 x4 : ffff800015692ac0 x3 : ffff80000834e4d4
x2 : 0000000000000001 x1 : 0000000100000000 x0 : 000000000000005c
Call trace:
 folio_get include/linux/mm.h:1129 [inline]
 get_page include/linux/mm.h:1135 [inline]
 put_metapage+0x278/0x2c4 fs/jfs/jfs_metapage.c:721
 txUnlock+0x3e4/0xbb0 fs/jfs/jfs_txnmgr.c:942
 txLazyCommit fs/jfs/jfs_txnmgr.c:2677 [inline]
 jfs_lazycommit+0x490/0x988 fs/jfs/jfs_txnmgr.c:2727
 kthread+0x250/0x2d8 kernel/kthread.c:376
 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:860
Code: b0046001 912b8021 aa1603e0 97ba0cc2 (d4210000) 
---[ end trace 0000000000000000 ]---