R10: 00000000ffffffff R11: 0000000000000246 R12: 00007ffc942669f0 R13: 00007f19146e5925 R14: 000000000000b88b R15: 00007ffc94266a30 ---[ end trace 907b0a8772bcc284 ]--- ================================================================== BUG: KASAN: use-after-free in instrument_atomic_read_write include/linux/instrumented.h:101 [inline] BUG: KASAN: use-after-free in atomic_try_cmpxchg_acquire include/linux/atomic/atomic-instrumented.h:511 [inline] BUG: KASAN: use-after-free in queued_spin_lock include/asm-generic/qspinlock.h:82 [inline] BUG: KASAN: use-after-free in do_raw_spin_lock include/linux/spinlock.h:187 [inline] BUG: KASAN: use-after-free in __raw_spin_lock include/linux/spinlock_api_smp.h:143 [inline] BUG: KASAN: use-after-free in _raw_spin_lock+0x81/0xe0 kernel/locking/spinlock.c:154 Write of size 4 at addr ffff88812d644948 by task syz-executor/282 CPU: 1 PID: 282 Comm: syz-executor Tainted: G W 5.15.185-syzkaller-00339-ge678c93d43cc #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 Call Trace: __dump_stack+0x21/0x30 lib/dump_stack.c:88 dump_stack_lvl+0xee/0x150 lib/dump_stack.c:106 print_address_description+0x7f/0x2c0 mm/kasan/report.c:248 __kasan_report mm/kasan/report.c:427 [inline] kasan_report+0xf1/0x140 mm/kasan/report.c:444 check_region_inline mm/kasan/generic.c:-1 [inline] kasan_check_range+0x280/0x290 mm/kasan/generic.c:189 __kasan_check_write+0x14/0x20 mm/kasan/shadow.c:37 instrument_atomic_read_write include/linux/instrumented.h:101 [inline] atomic_try_cmpxchg_acquire include/linux/atomic/atomic-instrumented.h:511 [inline] queued_spin_lock include/asm-generic/qspinlock.h:82 [inline] do_raw_spin_lock include/linux/spinlock.h:187 [inline] __raw_spin_lock include/linux/spinlock_api_smp.h:143 [inline] _raw_spin_lock+0x81/0xe0 kernel/locking/spinlock.c:154 spin_lock include/linux/spinlock.h:363 [inline] igrab+0x20/0xa0 fs/inode.c:1410 f2fs_sync_inode_meta+0x153/0x2a0 fs/f2fs/checkpoint.c:1157 block_operations fs/f2fs/checkpoint.c:1265 [inline] f2fs_write_checkpoint+0xa7d/0x1f00 fs/f2fs/checkpoint.c:1659 f2fs_issue_checkpoint+0x2e5/0x470 fs/f2fs/checkpoint.c:1866 f2fs_sync_fs+0x16f/0x2c0 fs/f2fs/super.c:1710 sync_filesystem+0x1cb/0x240 fs/sync.c:66 f2fs_quota_off_umount+0x217/0x230 fs/f2fs/super.c:2906 f2fs_put_super+0xb7/0xc00 fs/f2fs/super.c:1599 generic_shutdown_super+0x151/0x330 fs/super.c:475 kill_block_super+0x7f/0xf0 fs/super.c:1427 kill_f2fs_super+0x2e7/0x390 fs/f2fs/super.c:4667 deactivate_locked_super+0xa0/0x100 fs/super.c:335 deactivate_super+0xaf/0xe0 fs/super.c:366 cleanup_mnt+0x446/0x500 fs/namespace.c:1139 __cleanup_mnt+0x19/0x20 fs/namespace.c:1146 task_work_run+0x127/0x190 kernel/task_work.c:188 tracehook_notify_resume include/linux/tracehook.h:189 [inline] exit_to_user_mode_loop+0xd0/0xe0 kernel/entry/common.c:181 exit_to_user_mode_prepare+0x5a/0xa0 kernel/entry/common.c:214 __syscall_exit_to_user_mode_work kernel/entry/common.c:296 [inline] syscall_exit_to_user_mode+0x1a/0x30 kernel/entry/common.c:307 do_syscall_64+0x58/0xa0 arch/x86/entry/common.c:86 entry_SYSCALL_64_after_hwframe+0x66/0xd0 RIP: 0033:0x7f1914664c57 Code: a8 ff ff ff f7 d8 64 89 01 48 83 c8 ff c3 0f 1f 44 00 00 31 f6 e9 09 00 00 00 66 0f 1f 84 00 00 00 00 00 b8 a6 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 01 c3 48 c7 c2 a8 ff ff ff f7 d8 64 89 02 b8 RSP: 002b:00007ffc942658a8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6 RAX: 0000000000000000 RBX: 00007f19146e5925 RCX: 00007f1914664c57 RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffc94265960 RBP: 00007ffc94265960 R08: 0000000000000000 R09: 0000000000000000 R10: 00000000ffffffff R11: 0000000000000246 R12: 00007ffc942669f0 R13: 00007f19146e5925 R14: 000000000000b88b R15: 00007ffc94266a30 Allocated by task 601: 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:433 [inline] __kasan_slab_alloc+0xbd/0xf0 mm/kasan/common.c:466 kasan_slab_alloc include/linux/kasan.h:217 [inline] slab_post_alloc_hook+0x4f/0x2b0 mm/slab.h:550 slab_alloc_node mm/slub.c:3240 [inline] slab_alloc mm/slub.c:3250 [inline] kmem_cache_alloc+0xf7/0x260 mm/slub.c:3255 f2fs_kmem_cache_alloc fs/f2fs/f2fs.h:2802 [inline] f2fs_alloc_inode+0x26/0x330 fs/f2fs/super.c:1419 alloc_inode fs/inode.c:261 [inline] new_inode_pseudo+0x62/0x210 fs/inode.c:1001 new_inode+0x28/0x1e0 fs/inode.c:1030 f2fs_new_inode+0xd2/0x12b0 fs/f2fs/namei.c:36 f2fs_create+0x178/0x15f0 fs/f2fs/namei.c:358 lookup_open fs/namei.c:3462 [inline] open_last_lookups fs/namei.c:3532 [inline] path_openat+0x11ae/0x2f10 fs/namei.c:3739 do_filp_open+0x1b3/0x3e0 fs/namei.c:3769 do_sys_openat2+0x14c/0x7b0 fs/open.c:1234 do_sys_open fs/open.c:1250 [inline] __do_sys_openat fs/open.c:1266 [inline] __se_sys_openat fs/open.c:1261 [inline] __x64_sys_openat+0x136/0x160 fs/open.c:1261 x64_sys_call+0x219/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:258 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x66/0xd0 Freed by task 615: kasan_save_stack mm/kasan/common.c:38 [inline] kasan_set_track+0x4a/0x70 mm/kasan/common.c:45 kasan_set_free_info+0x23/0x40 mm/kasan/generic.c:370 ____kasan_slab_free+0x125/0x160 mm/kasan/common.c:365 __kasan_slab_free+0x11/0x20 mm/kasan/common.c:373 kasan_slab_free include/linux/kasan.h:193 [inline] slab_free_hook mm/slub.c:1723 [inline] slab_free_freelist_hook+0xc2/0x190 mm/slub.c:1749 slab_free mm/slub.c:3521 [inline] kmem_cache_free+0x100/0x320 mm/slub.c:3539 f2fs_free_inode+0x24/0x30 fs/f2fs/super.c:1567 i_callback+0x4c/0x70 fs/inode.c:250 rcu_do_batch+0x51d/0xba0 kernel/rcu/tree.c:2523 rcu_core+0x5e4/0xf80 kernel/rcu/tree.c:2763 rcu_core_si+0x9/0x10 kernel/rcu/tree.c:2776 handle_softirqs+0x250/0x560 kernel/softirq.c:583 __do_softirq kernel/softirq.c:621 [inline] invoke_softirq kernel/softirq.c:443 [inline] __irq_exit_rcu+0x52/0xf0 kernel/softirq.c:670 irq_exit_rcu+0x9/0x10 kernel/softirq.c:682 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1108 [inline] sysvec_apic_timer_interrupt+0xa9/0xc0 arch/x86/kernel/apic/apic.c:1108 asm_sysvec_apic_timer_interrupt+0x1b/0x20 arch/x86/include/asm/idtentry.h:676 Last potentially related work creation: kasan_save_stack+0x3a/0x60 mm/kasan/common.c:38 __kasan_record_aux_stack+0xd2/0x100 mm/kasan/generic.c:348 kasan_record_aux_stack_noalloc+0xb/0x10 mm/kasan/generic.c:358 __call_rcu_common kernel/rcu/tree.c:3007 [inline] call_rcu+0xf6/0xf60 kernel/rcu/tree.c:3125 destroy_inode fs/inode.c:316 [inline] evict+0x7da/0x870 fs/inode.c:662 dispose_list fs/inode.c:680 [inline] evict_inodes+0x5de/0x650 fs/inode.c:734 generic_shutdown_super+0x96/0x330 fs/super.c:454 kill_block_super+0x7f/0xf0 fs/super.c:1427 kill_f2fs_super+0x2e7/0x390 fs/f2fs/super.c:4667 deactivate_locked_super+0xa0/0x100 fs/super.c:335 deactivate_super+0xaf/0xe0 fs/super.c:366 cleanup_mnt+0x446/0x500 fs/namespace.c:1139 __cleanup_mnt+0x19/0x20 fs/namespace.c:1146 task_work_run+0x127/0x190 kernel/task_work.c:188 tracehook_notify_resume include/linux/tracehook.h:189 [inline] exit_to_user_mode_loop+0xd0/0xe0 kernel/entry/common.c:181 exit_to_user_mode_prepare+0x5a/0xa0 kernel/entry/common.c:214 __syscall_exit_to_user_mode_work kernel/entry/common.c:296 [inline] syscall_exit_to_user_mode+0x1a/0x30 kernel/entry/common.c:307 do_syscall_64+0x58/0xa0 arch/x86/entry/common.c:86 entry_SYSCALL_64_after_hwframe+0x66/0xd0 The buggy address belongs to the object at ffff88812d6448c0 which belongs to the cache f2fs_inode_cache of size 1424 The buggy address is located 136 bytes inside of 1424-byte region [ffff88812d6448c0, ffff88812d644e50) The buggy address belongs to the page: page:ffffea0004b59000 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x12d640 head:ffffea0004b59000 order:3 compound_mapcount:0 compound_pincount:0 flags: 0x4000000000010200(slab|head|zone=1) raw: 4000000000010200 0000000000000000 dead000000000122 ffff8881081f6d80 raw: 0000000000000000 0000000080150015 00000001ffffffff 0000000000000000 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 601, ts 47198701383, free_ts 35594704675 set_page_owner include/linux/page_owner.h:33 [inline] post_alloc_hook+0x192/0x1b0 mm/page_alloc.c:2605 prep_new_page+0x1c/0x110 mm/page_alloc.c:2611 get_page_from_freelist+0x2cc5/0x2d50 mm/page_alloc.c:4485 __alloc_pages+0x18f/0x440 mm/page_alloc.c:5789 alloc_slab_page mm/slub.c:-1 [inline] allocate_slab mm/slub.c:1932 [inline] new_slab+0xa1/0x4d0 mm/slub.c:1995 ___slab_alloc+0x381/0x810 mm/slub.c:3028 __slab_alloc+0x49/0x90 mm/slub.c:3115 slab_alloc_node mm/slub.c:3206 [inline] slab_alloc mm/slub.c:3250 [inline] kmem_cache_alloc+0x138/0x260 mm/slub.c:3255 f2fs_kmem_cache_alloc fs/f2fs/f2fs.h:2802 [inline] f2fs_alloc_inode+0x26/0x330 fs/f2fs/super.c:1419 alloc_inode fs/inode.c:261 [inline] iget_locked+0x16c/0x7e0 fs/inode.c:1308 f2fs_iget+0x55/0x5130 fs/f2fs/inode.c:510 f2fs_fill_super+0x46a7/0x6d10 fs/f2fs/super.c:4394 mount_bdev+0x2ae/0x3e0 fs/super.c:1400 f2fs_mount+0x34/0x40 fs/f2fs/super.c:4635 legacy_get_tree+0xed/0x190 fs/fs_context.c:611 vfs_get_tree+0x89/0x260 fs/super.c:1530 page last free stack trace: reset_page_owner include/linux/page_owner.h:26 [inline] free_pages_prepare mm/page_alloc.c:1472 [inline] free_pcp_prepare mm/page_alloc.c:1544 [inline] free_unref_page_prepare+0x542/0x550 mm/page_alloc.c:3534 free_unref_page_list+0x134/0x9d0 mm/page_alloc.c:3671 release_pages+0x1076/0x10d0 mm/swap.c:1009 __pagevec_release+0x71/0xe0 mm/swap.c:1029 pagevec_release include/linux/pagevec.h:81 [inline] shmem_undo_range+0x53f/0x13d0 mm/shmem.c:969 shmem_truncate_range mm/shmem.c:1068 [inline] shmem_evict_inode+0x1fd/0x9c0 mm/shmem.c:1150 evict+0x485/0x870 fs/inode.c:647 iput_final fs/inode.c:1769 [inline] iput+0x635/0x7c0 fs/inode.c:1795 dentry_unlink_inode+0x32f/0x3e0 fs/dcache.c:380 __dentry_kill+0x44f/0x650 fs/dcache.c:586 dentry_kill+0xc0/0x2a0 fs/dcache.c:-1 dput+0x47/0x90 fs/dcache.c:893 __fput+0x580/0x8b0 fs/file_table.c:319 ____fput+0x15/0x20 fs/file_table.c:339 task_work_run+0x127/0x190 kernel/task_work.c:188 tracehook_notify_resume include/linux/tracehook.h:189 [inline] exit_to_user_mode_loop+0xd0/0xe0 kernel/entry/common.c:181 Memory state around the buggy address: ffff88812d644800: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ffff88812d644880: fc fc fc fc fc fc fc fc fa fb fb fb fb fb fb fb >ffff88812d644900: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ^ ffff88812d644980: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ffff88812d644a00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ==================================================================