ERROR: (device loop4): remounting filesystem as read-only
ERROR: (device loop4): jfs_readdir: JFS:Dtree error: ino = 2, bn=48, index = 4
ERROR: (device loop4): jfs_readdir: JFS:Dtree error: ino = 2, bn=48, index = 5
BUG: Bad page state in process syz.4.581  pfn:109614
page:00000000440ead03 refcount:0 mapcount:0 mapping:0000000000000000 index:0x2f pfn:0x109614
flags: 0x5ffc00000002006(referenced|uptodate|private|node=0|zone=2|lastcpupid=0x7ff)
raw: 05ffc00000002006 fffffc000331ecc8 ffff8000212876e0 0000000000000000
raw: 000000000000002f ffff0000d1446e88 00000000ffffffff 0000000000000000
page dumped because: PAGE_FLAGS_CHECK_AT_FREE flag(s) set
Modules linked in:
CPU: 1 PID: 5998 Comm: syz.4.581 Not tainted 6.1.117-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
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:699
 free_page_is_bad_report mm/page_alloc.c:1281 [inline]
 free_page_is_bad mm/page_alloc.c:1291 [inline]
 free_pages_prepare mm/page_alloc.c:1437 [inline]
 free_pcp_prepare mm/page_alloc.c:1494 [inline]
 free_unref_page_prepare+0x348/0x1070 mm/page_alloc.c:3369
 free_unref_page_list+0xec/0x9c0 mm/page_alloc.c:3510
 release_pages+0x1254/0x14dc mm/swap.c:1055
 __pagevec_release+0x94/0x10c mm/swap.c:1075
 pagevec_release include/linux/pagevec.h:71 [inline]
 folio_batch_release include/linux/pagevec.h:135 [inline]
 truncate_inode_pages_range+0x388/0xf10 mm/truncate.c:372
 truncate_inode_pages+0x2c/0x3c mm/truncate.c:451
 jfs_remount+0x2dc/0x594 fs/jfs/super.c:451
 legacy_reconfigure+0xfc/0x114 fs/fs_context.c:655
 reconfigure_super+0x318/0x7a4 fs/super.c:977
 do_remount fs/namespace.c:2712 [inline]
 path_mount+0xc70/0xe5c fs/namespace.c:3378
 do_mount fs/namespace.c:3399 [inline]
 __do_sys_mount fs/namespace.c:3607 [inline]
 __se_sys_mount fs/namespace.c:3584 [inline]
 __arm64_sys_mount+0x45c/0x594 fs/namespace.c:3584
 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline]
 invoke_syscall+0x98/0x2bc arch/arm64/kernel/syscall.c:52
 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:140
 do_el0_svc+0x58/0x13c arch/arm64/kernel/syscall.c:204
 el0_svc+0x58/0x168 arch/arm64/kernel/entry-common.c:637
 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655
 el0t_64_sync+0x18c/0x190 arch/arm64/kernel/entry.S:585
BUG: Bad page state in process syz.4.581  pfn:10c7b3
page:000000000c44dbb6 refcount:0 mapcount:0 mapping:0000000000000000 index:0x2e pfn:0x10c7b3
flags: 0x5ffc00000002006(referenced|uptodate|private|node=0|zone=2|lastcpupid=0x7ff)
raw: 05ffc00000002006 fffffc0003c06208 ffff8000212876e0 0000000000000000
raw: 000000000000002e ffff0000d840f0f8 00000000ffffffff 0000000000000000
page dumped because: PAGE_FLAGS_CHECK_AT_FREE flag(s) set
Modules linked in:
CPU: 1 PID: 5998 Comm: syz.4.581 Tainted: G    B              6.1.117-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
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:699
 free_page_is_bad_report mm/page_alloc.c:1281 [inline]
 free_page_is_bad mm/page_alloc.c:1291 [inline]
 free_pages_prepare mm/page_alloc.c:1437 [inline]
 free_pcp_prepare mm/page_alloc.c:1494 [inline]
 free_unref_page_prepare+0x348/0x1070 mm/page_alloc.c:3369
 free_unref_page_list+0xec/0x9c0 mm/page_alloc.c:3510
 release_pages+0x1254/0x14dc mm/swap.c:1055
 __pagevec_release+0x94/0x10c mm/swap.c:1075
 pagevec_release include/linux/pagevec.h:71 [inline]
 folio_batch_release include/linux/pagevec.h:135 [inline]
 truncate_inode_pages_range+0x388/0xf10 mm/truncate.c:372
 truncate_inode_pages+0x2c/0x3c mm/truncate.c:451
 jfs_remount+0x2dc/0x594 fs/jfs/super.c:451
 legacy_reconfigure+0xfc/0x114 fs/fs_context.c:655
 reconfigure_super+0x318/0x7a4 fs/super.c:977
 do_remount fs/namespace.c:2712 [inline]
 path_mount+0xc70/0xe5c fs/namespace.c:3378
 do_mount fs/namespace.c:3399 [inline]
 __do_sys_mount fs/namespace.c:3607 [inline]
 __se_sys_mount fs/namespace.c:3584 [inline]
 __arm64_sys_mount+0x45c/0x594 fs/namespace.c:3584
 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline]
 invoke_syscall+0x98/0x2bc arch/arm64/kernel/syscall.c:52
 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:140
 do_el0_svc+0x58/0x13c arch/arm64/kernel/syscall.c:204
 el0_svc+0x58/0x168 arch/arm64/kernel/entry-common.c:637
 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655
 el0t_64_sync+0x18c/0x190 arch/arm64/kernel/entry.S:585
BUG: Bad page state in process syz.4.581  pfn:130188
page:0000000087e6ce23 refcount:0 mapcount:0 mapping:0000000000000000 index:0x2d pfn:0x130188
flags: 0x5ffc00000002006(referenced|uptodate|private|node=0|zone=2|lastcpupid=0x7ff)
raw: 05ffc00000002006 fffffc0003c3d688 ffff8000212876e0 0000000000000000
raw: 000000000000002d ffff0000d840f2e8 00000000ffffffff 0000000000000000
page dumped because: PAGE_FLAGS_CHECK_AT_FREE flag(s) set
Modules linked in:
CPU: 1 PID: 5998 Comm: syz.4.581 Tainted: G    B              6.1.117-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
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:699
 free_page_is_bad_report mm/page_alloc.c:1281 [inline]
 free_page_is_bad mm/page_alloc.c:1291 [inline]
 free_pages_prepare mm/page_alloc.c:1437 [inline]
 free_pcp_prepare mm/page_alloc.c:1494 [inline]
 free_unref_page_prepare+0x348/0x1070 mm/page_alloc.c:3369
 free_unref_page_list+0xec/0x9c0 mm/page_alloc.c:3510
 release_pages+0x1254/0x14dc mm/swap.c:1055
 __pagevec_release+0x94/0x10c mm/swap.c:1075
 pagevec_release include/linux/pagevec.h:71 [inline]
 folio_batch_release include/linux/pagevec.h:135 [inline]
 truncate_inode_pages_range+0x388/0xf10 mm/truncate.c:372
 truncate_inode_pages+0x2c/0x3c mm/truncate.c:451
 jfs_remount+0x2dc/0x594 fs/jfs/super.c:451
 legacy_reconfigure+0xfc/0x114 fs/fs_context.c:655
 reconfigure_super+0x318/0x7a4 fs/super.c:977
 do_remount fs/namespace.c:2712 [inline]
 path_mount+0xc70/0xe5c fs/namespace.c:3378
 do_mount fs/namespace.c:3399 [inline]
 __do_sys_mount fs/namespace.c:3607 [inline]
 __se_sys_mount fs/namespace.c:3584 [inline]
 __arm64_sys_mount+0x45c/0x594 fs/namespace.c:3584
 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline]
 invoke_syscall+0x98/0x2bc arch/arm64/kernel/syscall.c:52
 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:140
 do_el0_svc+0x58/0x13c arch/arm64/kernel/syscall.c:204
 el0_svc+0x58/0x168 arch/arm64/kernel/entry-common.c:637
 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655
 el0t_64_sync+0x18c/0x190 arch/arm64/kernel/entry.S:585
ERROR: (device loop4): dtSearch: stack overrun!

ERROR: (device loop4): remounting filesystem as read-only
btstack dump:
bn = 0, index = 0
bn = 30, index = 0
bn = 0, index = 0
bn = 30, index = 0
bn = 0, index = 0
bn = 30, index = 0
bn = 0, index = 0
bn = 0, index = 0
jfs_lookup: dtSearch returned -5