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BUG: KASAN: use-after-free in instrument_atomic_read include/linux/instrumented.h:72 [inline]
BUG: KASAN: use-after-free in _test_bit include/asm-generic/bitops/instrumented-non-atomic.h:141 [inline]
BUG: KASAN: use-after-free in mapping_unevictable include/linux/pagemap.h:252 [inline]
BUG: KASAN: use-after-free in folio_evictable mm/internal.h:138 [inline]
BUG: KASAN: use-after-free in lru_add_fn+0x2d4/0x1ac0 mm/swap.c:210
Read of size 8 at addr ffff88806fd85220 by task syz-executor.0/4836
CPU: 0 PID: 4836 Comm: syz-executor.0 Not tainted 6.1.93-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/07/2024
Call Trace:
<TASK>
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0x1e3/0x2cb lib/dump_stack.c:106
print_address_description mm/kasan/report.c:284 [inline]
print_report+0x15f/0x4f0 mm/kasan/report.c:395
kasan_report+0x136/0x160 mm/kasan/report.c:495
kasan_check_range+0x27f/0x290 mm/kasan/generic.c:189
instrument_atomic_read include/linux/instrumented.h:72 [inline]
_test_bit include/asm-generic/bitops/instrumented-non-atomic.h:141 [inline]
mapping_unevictable include/linux/pagemap.h:252 [inline]
folio_evictable mm/internal.h:138 [inline]
lru_add_fn+0x2d4/0x1ac0 mm/swap.c:210
folio_batch_move_lru+0x31a/0x720 mm/swap.c:246
lru_add_drain_cpu+0x108/0x8b0 mm/swap.c:669
lru_add_drain+0x11e/0x3e0 mm/swap.c:773
exit_mmap+0x22b/0x9f0 mm/mmap.c:3222
__mmput+0x115/0x3c0 kernel/fork.c:1199
exit_mm+0x226/0x300 kernel/exit.c:563
do_exit+0x9f6/0x26a0 kernel/exit.c:856
do_group_exit+0x202/0x2b0 kernel/exit.c:1019
get_signal+0x16f7/0x17d0 kernel/signal.c:2862
arch_do_signal_or_restart+0xb0/0x1a10 arch/x86/kernel/signal.c:871
exit_to_user_mode_loop+0x6a/0x100 kernel/entry/common.c:174
exit_to_user_mode_prepare+0xb1/0x140 kernel/entry/common.c:210
__syscall_exit_to_user_mode_work kernel/entry/common.c:292 [inline]
syscall_exit_to_user_mode+0x60/0x270 kernel/entry/common.c:303
do_syscall_64+0x47/0xb0 arch/x86/entry/common.c:87
entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7f6ba987cea9
Code: Unable to access opcode bytes at 0x7f6ba987ce7f.
RSP: 002b:00007f6baa5c40c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffea RBX: 00007f6ba99b41f0 RCX: 00007f6ba987cea9
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000005
RBP: 00007f6ba98ebff4 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000006e R14: 00007f6ba99b41f0 R15: 00007fff3910ee18
</TASK>
Allocated by task 4820:
kasan_save_stack mm/kasan/common.c:45 [inline]
kasan_set_track+0x4b/0x70 mm/kasan/common.c:52
__kasan_slab_alloc+0x65/0x70 mm/kasan/common.c:328
kasan_slab_alloc include/linux/kasan.h:201 [inline]
slab_post_alloc_hook+0x52/0x3a0 mm/slab.h:737
slab_alloc_node mm/slub.c:3398 [inline]
slab_alloc mm/slub.c:3406 [inline]
__kmem_cache_alloc_lru mm/slub.c:3413 [inline]
kmem_cache_alloc_lru+0x10c/0x2d0 mm/slub.c:3429
alloc_inode_sb include/linux/fs.h:3193 [inline]
nilfs_alloc_inode+0x2a/0xe0 fs/nilfs2/super.c:154
alloc_inode fs/inode.c:261 [inline]
iget5_locked+0x9c/0x270 fs/inode.c:1285
nilfs_iget_locked+0x127/0x180 fs/nilfs2/inode.c:605
nilfs_ifile_read+0x2e/0x170 fs/nilfs2/ifile.c:187
nilfs_attach_checkpoint+0x260/0x4d0 fs/nilfs2/super.c:572
nilfs_fill_super+0x349/0x660 fs/nilfs2/super.c:1095
nilfs_mount+0x679/0x9a0 fs/nilfs2/super.c:1347
legacy_get_tree+0xeb/0x180 fs/fs_context.c:632
vfs_get_tree+0x88/0x270 fs/super.c:1562
do_new_mount+0x2ba/0xb40 fs/namespace.c:3051
do_mount fs/namespace.c:3394 [inline]
__do_sys_mount fs/namespace.c:3602 [inline]
__se_sys_mount+0x2d5/0x3c0 fs/namespace.c:3579
do_syscall_x64 arch/x86/entry/common.c:51 [inline]
do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:81
entry_SYSCALL_64_after_hwframe+0x68/0xd2
Freed by task 46:
kasan_save_stack mm/kasan/common.c:45 [inline]
kasan_set_track+0x4b/0x70 mm/kasan/common.c:52
kasan_save_free_info+0x27/0x40 mm/kasan/generic.c:516
____kasan_slab_free+0xd6/0x120 mm/kasan/common.c:236
kasan_slab_free include/linux/kasan.h:177 [inline]
slab_free_hook mm/slub.c:1724 [inline]
slab_free_freelist_hook mm/slub.c:1750 [inline]
slab_free mm/slub.c:3661 [inline]
kmem_cache_free+0x292/0x510 mm/slub.c:3683
rcu_do_batch kernel/rcu/tree.c:2296 [inline]
rcu_core+0xad5/0x1810 kernel/rcu/tree.c:2556
handle_softirqs+0x2ee/0xa40 kernel/softirq.c:571
__do_softirq kernel/softirq.c:605 [inline]
invoke_softirq kernel/softirq.c:445 [inline]
__irq_exit_rcu+0x157/0x240 kernel/softirq.c:654
irq_exit_rcu+0x5/0x20 kernel/softirq.c:666
sysvec_apic_timer_interrupt+0x91/0xb0 arch/x86/kernel/apic/apic.c:1106
asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:653
Last potentially related work creation:
kasan_save_stack+0x3b/0x60 mm/kasan/common.c:45
__kasan_record_aux_stack+0xb0/0xc0 mm/kasan/generic.c:486
call_rcu+0x163/0xa10 kernel/rcu/tree.c:2844
nilfs_put_root+0x93/0xb0 fs/nilfs2/the_nilfs.c:910
nilfs_segctor_destroy fs/nilfs2/segment.c:2811 [inline]
nilfs_detach_log_writer+0x8c5/0xbe0 fs/nilfs2/segment.c:2874
nilfs_put_super+0x49/0x150 fs/nilfs2/super.c:498
generic_shutdown_super+0x130/0x340 fs/super.c:501
kill_block_super+0x7a/0xe0 fs/super.c:1459
deactivate_locked_super+0xa0/0x110 fs/super.c:332
cleanup_mnt+0x490/0x520 fs/namespace.c:1186
task_work_run+0x246/0x300 kernel/task_work.c:179
resume_user_mode_work include/linux/resume_user_mode.h:49 [inline]
exit_to_user_mode_loop+0xde/0x100 kernel/entry/common.c:177
exit_to_user_mode_prepare+0xb1/0x140 kernel/entry/common.c:210
__syscall_exit_to_user_mode_work kernel/entry/common.c:292 [inline]
syscall_exit_to_user_mode+0x60/0x270 kernel/entry/common.c:303
do_syscall_64+0x47/0xb0 arch/x86/entry/common.c:87
entry_SYSCALL_64_after_hwframe+0x68/0xd2
The buggy address belongs to the object at ffff88806fd84ce0
which belongs to the cache nilfs2_inode_cache of size 1512
The buggy address is located 1344 bytes inside of
1512-byte region [ffff88806fd84ce0, ffff88806fd852c8)
The buggy address belongs to the physical page:
page:ffffea0001bf6000 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x6fd80
head:ffffea0001bf6000 order:3 compound_mapcount:0 compound_pincount:0
memcg:ffff888014efc601
flags: 0xfff00000010200(slab|head|node=0|zone=1|lastcpupid=0x7ff)
raw: 00fff00000010200 0000000000000000 dead000000000122 ffff888016f1edc0
raw: 0000000000000000 0000000000130013 00000001ffffffff ffff888014efc601
page dumped because: kasan: bad access detected
page_owner tracks the page as allocated
page last allocated via order 3, migratetype Reclaimable, gfp_mask 0x1d2050(__GFP_IO|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC|__GFP_HARDWALL|__GFP_RECLAIMABLE), pid 4706, tgid 4705 (syz-executor.3), ts 153009244572, free_ts 152945617146
set_page_owner include/linux/page_owner.h:31 [inline]
post_alloc_hook+0x18d/0x1b0 mm/page_alloc.c:2513
prep_new_page mm/page_alloc.c:2520 [inline]
get_page_from_freelist+0x31a1/0x3320 mm/page_alloc.c:4279
__alloc_pages+0x28d/0x770 mm/page_alloc.c:5547
alloc_slab_page+0x6a/0x150 mm/slub.c:1794
allocate_slab mm/slub.c:1939 [inline]
new_slab+0x84/0x2d0 mm/slub.c:1992
___slab_alloc+0xc20/0x1270 mm/slub.c:3180
__slab_alloc mm/slub.c:3279 [inline]
slab_alloc_node mm/slub.c:3364 [inline]
slab_alloc mm/slub.c:3406 [inline]
__kmem_cache_alloc_lru mm/slub.c:3413 [inline]
kmem_cache_alloc_lru+0x1a5/0x2d0 mm/slub.c:3429
alloc_inode_sb include/linux/fs.h:3193 [inline]
nilfs_alloc_inode+0x2a/0xe0 fs/nilfs2/super.c:154
alloc_inode fs/inode.c:261 [inline]
new_inode_pseudo+0x61/0x1d0 fs/inode.c:1020
new_inode+0x25/0x1d0 fs/inode.c:1048
nilfs_new_inode+0x138/0xa30 fs/nilfs2/inode.c:335
nilfs_create+0xf9/0x2c0 fs/nilfs2/namei.c:85
lookup_open fs/namei.c:3484 [inline]
open_last_lookups fs/namei.c:3552 [inline]
path_openat+0x12f1/0x2e60 fs/namei.c:3782
do_filp_open+0x230/0x480 fs/namei.c:3812
do_sys_openat2+0x13b/0x500 fs/open.c:1318
do_sys_open fs/open.c:1334 [inline]
__do_sys_open fs/open.c:1342 [inline]
__se_sys_open fs/open.c:1338 [inline]
__x64_sys_open+0x221/0x270 fs/open.c:1338
page last free stack trace:
reset_page_owner include/linux/page_owner.h:24 [inline]
free_pages_prepare mm/page_alloc.c:1440 [inline]
free_pcp_prepare mm/page_alloc.c:1490 [inline]
free_unref_page_prepare+0xf63/0x1120 mm/page_alloc.c:3358
free_unref_page+0x33/0x3e0 mm/page_alloc.c:3453
qlink_free mm/kasan/quarantine.c:168 [inline]
qlist_free_all+0x76/0xe0 mm/kasan/quarantine.c:187
kasan_quarantine_reduce+0x156/0x170 mm/kasan/quarantine.c:294
__kasan_slab_alloc+0x1f/0x70 mm/kasan/common.c:305
kasan_slab_alloc include/linux/kasan.h:201 [inline]
slab_post_alloc_hook+0x52/0x3a0 mm/slab.h:737
slab_alloc_node mm/slub.c:3398 [inline]
__kmem_cache_alloc_node+0x137/0x260 mm/slub.c:3437
kmalloc_trace+0x26/0xe0 mm/slab_common.c:1045
kmalloc include/linux/slab.h:556 [inline]
kzalloc include/linux/slab.h:692 [inline]
kobject_uevent_env+0x281/0x8c0 lib/kobject_uevent.c:524
device_del+0x9c4/0xbd0 drivers/base/core.c:3894
device_unregister+0x1c/0xc0 drivers/base/core.c:3917
bdi_unregister+0x4ce/0x5c0 mm/backing-dev.c:953
generic_shutdown_super+0x2ae/0x340 fs/super.c:529
kill_anon_super+0x37/0x60 fs/super.c:1117
btrfs_kill_super+0x3d/0x50 fs/btrfs/super.c:2449
deactivate_locked_super+0xa0/0x110 fs/super.c:332
Memory state around the buggy address:
ffff88806fd85100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
ffff88806fd85180: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
>ffff88806fd85200: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
^
ffff88806fd85280: fb fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc
ffff88806fd85300: fc fc fc fc fc fc fc fc fc fa fb fb fb fb fb fb
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