==================================================================
BUG: KASAN: use-after-free in cleancache_fs_enabled_mapping include/linux/cleancache.h:56 [inline]
BUG: KASAN: use-after-free in cleancache_invalidate_page include/linux/cleancache.h:110 [inline]
BUG: KASAN: use-after-free in unaccount_page_cache_page+0x99f/0xa80 mm/filemap.c:175
Read of size 4 at addr ffff888119622470 by task syz-executor.5/22785
CPU: 1 PID: 22785 Comm: syz-executor.5 Not tainted 5.10.194-syzkaller-00508-ga27512601c2d #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/06/2023
Call Trace:
__dump_stack lib/dump_stack.c:77 [inline]
dump_stack_lvl+0x1e2/0x24b lib/dump_stack.c:118
print_address_description+0x81/0x3b0 mm/kasan/report.c:248
__kasan_report mm/kasan/report.c:435 [inline]
kasan_report+0x179/0x1c0 mm/kasan/report.c:452
__asan_report_load4_noabort+0x14/0x20 mm/kasan/report_generic.c:308
cleancache_fs_enabled_mapping include/linux/cleancache.h:56 [inline]
cleancache_invalidate_page include/linux/cleancache.h:110 [inline]
unaccount_page_cache_page+0x99f/0xa80 mm/filemap.c:175
__delete_from_page_cache+0xd0/0x5d0 mm/filemap.c:243
__remove_mapping+0x567/0x690 mm/vmscan.c:978
shrink_page_list+0x1f38/0x4c60 mm/vmscan.c:1491
shrink_inactive_list+0x591/0x1150 mm/vmscan.c:2048
shrink_list mm/vmscan.c:2267 [inline]
shrink_lruvec+0xced/0x3860 mm/vmscan.c:5434
shrink_node_memcgs mm/vmscan.c:5621 [inline]
shrink_node+0xdf3/0x1fb0 mm/vmscan.c:5651
shrink_zones mm/vmscan.c:5854 [inline]
do_try_to_free_pages+0x67e/0x15e0 mm/vmscan.c:5912
try_to_free_mem_cgroup_pages+0x369/0x830 mm/vmscan.c:6230
try_charge+0x4b8/0x15f0 mm/memcontrol.c:2742
__mem_cgroup_charge+0x147/0x6e0 mm/memcontrol.c:6847
mem_cgroup_charge include/linux/memcontrol.h:458 [inline]
__add_to_page_cache_locked+0x29d/0xba0 mm/filemap.c:854
add_to_page_cache_lru+0x117/0x2c0 mm/filemap.c:948
pagecache_get_page+0x71e/0x950 mm/filemap.c:1859
grab_cache_page_write_begin+0x5d/0xa0 mm/filemap.c:3456
ext4_da_write_begin+0x587/0xf60 fs/ext4/inode.c:3055
generic_perform_write+0x2cd/0x570 mm/filemap.c:3506
ext4_buffered_write_iter+0x482/0x610 fs/ext4/file.c:271
ext4_file_write_iter+0x193/0x1c80 fs/ext4/file.c:685
__kernel_write+0x5ab/0x9d0 fs/read_write.c:550
dump_emit+0x261/0x3a0 fs/coredump.c:849
dump_user_range+0x71/0x1a0 fs/coredump.c:902
elf_core_dump+0x33bd/0x3c10 fs/binfmt_elf.c:2287
do_coredump+0x1eb8/0x2d60 fs/coredump.c:811
get_signal+0x102c/0x1410 kernel/signal.c:2768
arch_do_signal_or_restart+0xbd/0x17c0 arch/x86/kernel/signal.c:805
handle_signal_work kernel/entry/common.c:145 [inline]
exit_to_user_mode_loop+0x9b/0xd0 kernel/entry/common.c:169
exit_to_user_mode_prepare kernel/entry/common.c:199 [inline]
irqentry_exit_to_user_mode+0x5a/0x80 kernel/entry/common.c:287
irqentry_exit+0x12/0x60 kernel/entry/common.c:375
exc_general_protection+0x415/0x490 arch/x86/kernel/traps.c:557
asm_exc_general_protection+0x1e/0x30 arch/x86/include/asm/idtentry.h:565
RIP: 0033:0x7fe3242dbaf1
Code: c4 28 c3 e8 e1 20 00 00 90 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 b0 ff ff ff f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f
RSP: 002b:00000000200003e0 EFLAGS: 00010217
RAX: 0000000000000000 RBX: 00007fe3243fb2c0 RCX: 00007fe3242dbae9
RDX: 0000000020000180 RSI: 00000000200003e0 RDI: 0000000020000000
RBP: 00007fe32432747a R08: 0000000020000400 R09: 0000000020000400
R10: 00000000200001c0 R11: 0000000000000206 R12: 0000000000000000
R13: 000000000000006e R14: 00007fe3243fb2c0 R15: 00007ffd8ef2d3c8
Allocated by task 3461:
kasan_save_stack mm/kasan/common.c:38 [inline]
kasan_set_track mm/kasan/common.c:45 [inline]
set_alloc_info mm/kasan/common.c:430 [inline]
__kasan_slab_alloc+0xb1/0xe0 mm/kasan/common.c:463
kasan_slab_alloc include/linux/kasan.h:244 [inline]
slab_post_alloc_hook+0x61/0x2f0 mm/slab.h:583
slab_alloc_node mm/slub.c:2947 [inline]
slab_alloc mm/slub.c:2955 [inline]
kmem_cache_alloc+0x168/0x2e0 mm/slub.c:2960
getname_flags+0xba/0x520 fs/namei.c:141
user_path_at_empty+0x2d/0x50 fs/namei.c:2740
user_path_at include/linux/namei.h:60 [inline]
vfs_statx+0x106/0x3b0 fs/stat.c:193
vfs_fstatat fs/stat.c:215 [inline]
__do_sys_newfstatat fs/stat.c:383 [inline]
__se_sys_newfstatat+0xc8/0x760 fs/stat.c:377
__x64_sys_newfstatat+0x9b/0xb0 fs/stat.c:377
do_syscall_64+0x34/0x70
entry_SYSCALL_64_after_hwframe+0x61/0xc6
Freed by task 3461:
kasan_save_stack mm/kasan/common.c:38 [inline]
kasan_set_track+0x4b/0x70 mm/kasan/common.c:45
kasan_set_free_info+0x23/0x40 mm/kasan/generic.c:370
____kasan_slab_free+0x121/0x160 mm/kasan/common.c:362
__kasan_slab_free+0x11/0x20 mm/kasan/common.c:370
kasan_slab_free include/linux/kasan.h:220 [inline]
slab_free_hook mm/slub.c:1595 [inline]
slab_free_freelist_hook+0xc0/0x190 mm/slub.c:1621
slab_free mm/slub.c:3203 [inline]
kmem_cache_free+0xa9/0x1e0 mm/slub.c:3219
putname fs/namei.c:262 [inline]
filename_lookup+0x515/0x6f0 fs/namei.c:2470
user_path_at_empty+0x40/0x50 fs/namei.c:2740
user_path_at include/linux/namei.h:60 [inline]
vfs_statx+0x106/0x3b0 fs/stat.c:193
vfs_fstatat fs/stat.c:215 [inline]
__do_sys_newfstatat fs/stat.c:383 [inline]
__se_sys_newfstatat+0xc8/0x760 fs/stat.c:377
__x64_sys_newfstatat+0x9b/0xb0 fs/stat.c:377
do_syscall_64+0x34/0x70
entry_SYSCALL_64_after_hwframe+0x61/0xc6
The buggy address belongs to the object at ffff888119622200
which belongs to the cache names_cache of size 4096
The buggy address is located 624 bytes inside of
4096-byte region [ffff888119622200, ffff888119623200)
The buggy address belongs to the page:
page:ffffea0004658800 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x119620
head:ffffea0004658800 order:3 compound_mapcount:0 compound_pincount:0
flags: 0x4000000000010200(slab|head)
raw: 4000000000010200 dead000000000100 dead000000000122 ffff888100192c00
raw: 0000000000000000 0000000000070007 00000001ffffffff 0000000000000000
page dumped because: kasan: bad access detected
page_owner tracks the page as allocated
page last allocated via order 3, migratetype Unmovable, gfp_mask 0x1d20c0(__GFP_IO|__GFP_FS|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC|__GFP_HARDWALL), pid 3461, ts 2952816548892, free_ts 2952797903152
set_page_owner include/linux/page_owner.h:35 [inline]
post_alloc_hook mm/page_alloc.c:2456 [inline]
prep_new_page+0x166/0x180 mm/page_alloc.c:2462
get_page_from_freelist+0x2d8c/0x2f30 mm/page_alloc.c:4254
__alloc_pages_nodemask+0x435/0xaf0 mm/page_alloc.c:5346
allocate_slab mm/slub.c:1808 [inline]
new_slab+0x80/0x400 mm/slub.c:1869
new_slab_objects mm/slub.c:2627 [inline]
___slab_alloc+0x302/0x4b0 mm/slub.c:2791
__slab_alloc+0x63/0xa0 mm/slub.c:2831
slab_alloc_node mm/slub.c:2913 [inline]
slab_alloc mm/slub.c:2955 [inline]
kmem_cache_alloc+0x1b9/0x2e0 mm/slub.c:2960
getname_flags+0xba/0x520 fs/namei.c:141
getname+0x19/0x20 fs/namei.c:212
do_sys_openat2+0xd7/0x6f0 fs/open.c:1211
do_sys_open fs/open.c:1233 [inline]
__do_sys_openat fs/open.c:1249 [inline]
__se_sys_openat fs/open.c:1244 [inline]
__x64_sys_openat+0x243/0x290 fs/open.c:1244
do_syscall_64+0x34/0x70
entry_SYSCALL_64_after_hwframe+0x61/0xc6
page last free stack trace:
reset_page_owner include/linux/page_owner.h:28 [inline]
free_pages_prepare mm/page_alloc.c:1349 [inline]
__free_pages_ok+0x82c/0x850 mm/page_alloc.c:1629
free_the_page+0x76/0x370 mm/page_alloc.c:5407
__free_pages+0x67/0xc0 mm/page_alloc.c:5416
__free_slab+0xcf/0x190 mm/slub.c:1894
free_slab mm/slub.c:1909 [inline]
discard_slab mm/slub.c:1915 [inline]
unfreeze_partials+0x15e/0x190 mm/slub.c:2410
put_cpu_partial+0xbf/0x180 mm/slub.c:2446
__slab_free+0x2c8/0x3a0 mm/slub.c:3095
do_slab_free mm/slub.c:3191 [inline]
___cache_free+0x111/0x130 mm/slub.c:3210
qlink_free+0x50/0x90 mm/kasan/quarantine.c:157
qlist_free_all+0x47/0xb0 mm/kasan/quarantine.c:176
kasan_quarantine_reduce+0x15a/0x170 mm/kasan/quarantine.c:283
__kasan_slab_alloc+0x2f/0xe0 mm/kasan/common.c:440
kasan_slab_alloc include/linux/kasan.h:244 [inline]
slab_post_alloc_hook+0x61/0x2f0 mm/slab.h:583
slab_alloc_node mm/slub.c:2947 [inline]
slab_alloc mm/slub.c:2955 [inline]
kmem_cache_alloc+0x168/0x2e0 mm/slub.c:2960
getname_flags+0xba/0x520 fs/namei.c:141
getname+0x19/0x20 fs/namei.c:212
Memory state around the buggy address:
ffff888119622300: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
ffff888119622380: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
>ffff888119622400: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
^
ffff888119622480: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
ffff888119622500: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
==================================================================
general protection fault, probably for non-canonical address 0xdffffc00000000e5: 0000 [#1] PREEMPT SMP KASAN
KASAN: null-ptr-deref in range [0x0000000000000728-0x000000000000072f]
CPU: 1 PID: 22785 Comm: syz-executor.5 Tainted: G B 5.10.194-syzkaller-00508-ga27512601c2d #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/06/2023
RIP: 0010:f2fs_release_page+0x36f/0x870 fs/f2fs/data.c:3615
Code: ff df 80 3c 08 00 74 08 4c 89 e7 e8 8b d2 8d ff bb 28 07 00 00 49 03 1c 24 48 89 d8 48 c1 e8 03 48 b9 00 00 00 00 00 fc ff df <0f> b6 04 08 84 c0 0f 85 72 04 00 00 44 8b 23 bb 00 00 00 40 be 00
RSP: 0000:ffffc90004c45730 EFLAGS: 00010202
RAX: 00000000000000e5 RBX: 0000000000000728 RCX: dffffc0000000000
RDX: 0000000000000000 RSI: 0000000000000282 RDI: ffff8881114503c8
RBP: ffffc90004c45768 R08: ffffffff821a2134 R09: fffff94000ae1531
R10: 0000000000000000 R11: dffffc0000000001 R12: ffff8881114503c8
R13: 4000000000002005 R14: 1ffffd4000ae1531 R15: ffffea000570a980
FS: 00007fe322fda6c0(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000001ffffe40 CR3: 0000000114b38000 CR4: 00000000003506a0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
try_to_release_page+0x188/0x1e0 mm/filemap.c:3702
shrink_page_list+0x1a25/0x4c60 mm/vmscan.c:1460
shrink_inactive_list+0x591/0x1150 mm/vmscan.c:2048
shrink_list mm/vmscan.c:2267 [inline]
shrink_lruvec+0xced/0x3860 mm/vmscan.c:5434
shrink_node_memcgs mm/vmscan.c:5621 [inline]
shrink_node+0xdf3/0x1fb0 mm/vmscan.c:5651
shrink_zones mm/vmscan.c:5854 [inline]
do_try_to_free_pages+0x67e/0x15e0 mm/vmscan.c:5912
try_to_free_mem_cgroup_pages+0x369/0x830 mm/vmscan.c:6230
try_charge+0x4b8/0x15f0 mm/memcontrol.c:2742
__mem_cgroup_charge+0x147/0x6e0 mm/memcontrol.c:6847
mem_cgroup_charge include/linux/memcontrol.h:458 [inline]
__add_to_page_cache_locked+0x29d/0xba0 mm/filemap.c:854
add_to_page_cache_lru+0x117/0x2c0 mm/filemap.c:948
pagecache_get_page+0x71e/0x950 mm/filemap.c:1859
grab_cache_page_write_begin+0x5d/0xa0 mm/filemap.c:3456
ext4_da_write_begin+0x587/0xf60 fs/ext4/inode.c:3055
generic_perform_write+0x2cd/0x570 mm/filemap.c:3506
ext4_buffered_write_iter+0x482/0x610 fs/ext4/file.c:271
ext4_file_write_iter+0x193/0x1c80 fs/ext4/file.c:685
__kernel_write+0x5ab/0x9d0 fs/read_write.c:550
dump_emit+0x261/0x3a0 fs/coredump.c:849
dump_user_range+0x71/0x1a0 fs/coredump.c:902
elf_core_dump+0x33bd/0x3c10 fs/binfmt_elf.c:2287
do_coredump+0x1eb8/0x2d60 fs/coredump.c:811
get_signal+0x102c/0x1410 kernel/signal.c:2768
arch_do_signal_or_restart+0xbd/0x17c0 arch/x86/kernel/signal.c:805
handle_signal_work kernel/entry/common.c:145 [inline]
exit_to_user_mode_loop+0x9b/0xd0 kernel/entry/common.c:169
exit_to_user_mode_prepare kernel/entry/common.c:199 [inline]
irqentry_exit_to_user_mode+0x5a/0x80 kernel/entry/common.c:287
irqentry_exit+0x12/0x60 kernel/entry/common.c:375
exc_general_protection+0x415/0x490 arch/x86/kernel/traps.c:557
asm_exc_general_protection+0x1e/0x30 arch/x86/include/asm/idtentry.h:565
RIP: 0033:0x7fe3242dbaf1
Code: c4 28 c3 e8 e1 20 00 00 90 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 b0 ff ff ff f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f
RSP: 002b:00000000200003e0 EFLAGS: 00010217
RAX: 0000000000000000 RBX: 00007fe3243fb2c0 RCX: 00007fe3242dbae9
RDX: 0000000020000180 RSI: 00000000200003e0 RDI: 0000000020000000
RBP: 00007fe32432747a R08: 0000000020000400 R09: 0000000020000400
R10: 00000000200001c0 R11: 0000000000000206 R12: 0000000000000000
R13: 000000000000006e R14: 00007fe3243fb2c0 R15: 00007ffd8ef2d3c8
Modules linked in:
---[ end trace 07501b253604541b ]---
RIP: 0010:f2fs_release_page+0x36f/0x870 fs/f2fs/data.c:3615
Code: ff df 80 3c 08 00 74 08 4c 89 e7 e8 8b d2 8d ff bb 28 07 00 00 49 03 1c 24 48 89 d8 48 c1 e8 03 48 b9 00 00 00 00 00 fc ff df <0f> b6 04 08 84 c0 0f 85 72 04 00 00 44 8b 23 bb 00 00 00 40 be 00
RSP: 0000:ffffc90004c45730 EFLAGS: 00010202
RAX: 00000000000000e5 RBX: 0000000000000728 RCX: dffffc0000000000
RDX: 0000000000000000 RSI: 0000000000000282 RDI: ffff8881114503c8
RBP: ffffc90004c45768 R08: ffffffff821a2134 R09: fffff94000ae1531
R10: 0000000000000000 R11: dffffc0000000001 R12: ffff8881114503c8
R13: 4000000000002005 R14: 1ffffd4000ae1531 R15: ffffea000570a980
FS: 00007fe322fda6c0(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055555579a430 CR3: 0000000114b38000 CR4: 00000000003506a0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess), 1 bytes skipped:
0: df 80 3c 08 00 74 filds 0x7400083c(%rax)
6: 08 4c 89 e7 or %cl,-0x19(%rcx,%rcx,4)
a: e8 8b d2 8d ff call 0xff8dd29a
f: bb 28 07 00 00 mov $0x728,%ebx
14: 49 03 1c 24 add (%r12),%rbx
18: 48 89 d8 mov %rbx,%rax
1b: 48 c1 e8 03 shr $0x3,%rax
1f: 48 b9 00 00 00 00 00 movabs $0xdffffc0000000000,%rcx
26: fc ff df
* 29: 0f b6 04 08 movzbl (%rax,%rcx,1),%eax <-- trapping instruction
2d: 84 c0 test %al,%al
2f: 0f 85 72 04 00 00 jne 0x4a7
35: 44 8b 23 mov (%rbx),%r12d
38: bb 00 00 00 40 mov $0x40000000,%ebx
3d: be .byte 0xbe