------------[ cut here ]------------ WARNING: CPU: 0 PID: 3642 at fs/ext4/inode.c:5207 ext4_write_inode+0x333/0x5a0 fs/ext4/inode.c:5207 Modules linked in: CPU: 0 PID: 3642 Comm: syz-executor.1 Not tainted 5.19.0-rc4-syzkaller-00126-gea1c3b77bc0b #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/29/2022 RIP: 0010:ext4_write_inode+0x333/0x5a0 fs/ext4/inode.c:5207 Code: b6 04 02 84 c0 74 08 3c 03 0f 8e 46 02 00 00 8b b5 b0 06 00 00 4c 89 f7 e8 7a 70 12 00 41 89 c4 e9 ed fd ff ff e8 8d 53 5a ff <0f> 0b 45 31 e4 e9 de fd ff ff e8 7e 53 5a ff 48 89 ef 48 8d 74 24 RSP: 0018:ffffc90003aeec80 EFLAGS: 00010293 RAX: 0000000000000000 RBX: 1ffff9200075dd90 RCX: 0000000000000000 RDX: ffff88807eedd880 RSI: ffffffff82201323 RDI: 0000000000000005 RBP: ffff88804282dcf8 R08: 0000000000000005 R09: 0000000000000000 R10: 0000000000000800 R11: 0000000000000001 R12: 0000000000000800 R13: ffffc90003aeedf8 R14: dffffc0000000000 R15: ffff88804282dd20 FS: 000055555733b400(0000) GS:ffff8880b9b00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000055669d0ef518 CR3: 000000004c3f9000 CR4: 00000000003506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: write_inode fs/fs-writeback.c:1440 [inline] __writeback_single_inode+0xb70/0x10d0 fs/fs-writeback.c:1652 writeback_single_inode+0x2ad/0x4c0 fs/fs-writeback.c:1708 write_inode_now+0x16a/0x1e0 fs/fs-writeback.c:2723 iput_final fs/inode.c:1731 [inline] iput.part.0+0x460/0x820 fs/inode.c:1770 iput+0x58/0x70 fs/inode.c:1760 dentry_unlink_inode+0x2b1/0x460 fs/dcache.c:401 __dentry_kill+0x3c0/0x640 fs/dcache.c:607 shrink_dentry_list+0x23c/0x800 fs/dcache.c:1201 prune_dcache_sb+0xe7/0x140 fs/dcache.c:1282 super_cache_scan+0x336/0x590 fs/super.c:104 do_shrink_slab+0x42d/0xbd0 mm/vmscan.c:770 shrink_slab_memcg mm/vmscan.c:839 [inline] shrink_slab+0x3ee/0x6f0 mm/vmscan.c:918 shrink_node_memcgs mm/vmscan.c:3124 [inline] shrink_node+0x8b3/0x1db0 mm/vmscan.c:3245 shrink_zones mm/vmscan.c:3482 [inline] do_try_to_free_pages+0x3b5/0x1700 mm/vmscan.c:3540 try_to_free_mem_cgroup_pages+0x323/0x920 mm/vmscan.c:3854 try_charge_memcg+0x465/0x1380 mm/memcontrol.c:2622 obj_cgroup_charge_pages mm/memcontrol.c:2999 [inline] obj_cgroup_charge+0x2ab/0x5e0 mm/memcontrol.c:3289 memcg_slab_pre_alloc_hook mm/slab.h:505 [inline] slab_pre_alloc_hook mm/slab.h:728 [inline] slab_alloc_node mm/slub.c:3157 [inline] slab_alloc mm/slub.c:3251 [inline] __kmem_cache_alloc_lru mm/slub.c:3258 [inline] kmem_cache_alloc_lru+0x143/0x720 mm/slub.c:3275 __d_alloc+0x32/0x960 fs/dcache.c:1769 d_alloc+0x4a/0x230 fs/dcache.c:1849 d_alloc_parallel+0xe7/0x1af0 fs/dcache.c:2601 __lookup_slow+0x193/0x480 fs/namei.c:1686 lookup_slow fs/namei.c:1718 [inline] walk_component+0x40f/0x6a0 fs/namei.c:2014 lookup_last fs/namei.c:2469 [inline] path_lookupat+0x1bb/0x860 fs/namei.c:2493 filename_lookup+0x1c6/0x590 fs/namei.c:2522 user_path_at_empty+0x42/0x60 fs/namei.c:2895 user_path_at include/linux/namei.h:57 [inline] ksys_umount fs/namespace.c:1822 [inline] __do_sys_umount fs/namespace.c:1830 [inline] __se_sys_umount fs/namespace.c:1828 [inline] __x64_sys_umount+0xf8/0x180 fs/namespace.c:1828 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x46/0xb0 RIP: 0033:0x7f2a1108a577 Code: ff ff ff f7 d8 64 89 01 48 83 c8 ff c3 66 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 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007ffddfb73ad8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6 RAX: ffffffffffffffda RBX: 0000000000000060 RCX: 00007f2a1108a577 RDX: 00007ffddfb73bad RSI: 000000000000000a RDI: 00007ffddfb73ba0 RBP: 00007ffddfb73ba0 R08: 00000000ffffffff R09: 00007ffddfb73970 R10: 000055555733c853 R11: 0000000000000246 R12: 00007f2a110e21c8 R13: 00007ffddfb74c60 R14: 000055555733c810 R15: 00007ffddfb74ca0