------------[ cut here ]------------ WARNING: CPU: 2 PID: 3702 at fs/ext4/inode.c:5160 ext4_write_inode+0x333/0x5a0 fs/ext4/inode.c:5160 Modules linked in: CPU: 2 PID: 3702 Comm: syz-executor.1 Not tainted 5.17.0-rc3-syzkaller-00013-g2ade8eef993c #0 Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.14.0-2 04/01/2014 RIP: 0010:ext4_write_inode+0x333/0x5a0 fs/ext4/inode.c:5160 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 fa 3a 12 00 41 89 c4 e9 ed fd ff ff e8 6d fb 63 ff <0f> 0b 45 31 e4 e9 de fd ff ff e8 5e fb 63 ff 48 89 ef 48 8d 74 24 RSP: 0018:ffffc9000274f2b8 EFLAGS: 00010293 RAX: 0000000000000000 RBX: 1ffff920004e9e57 RCX: 0000000000000000 RDX: ffff88801a98ba00 RSI: ffffffff82147d23 RDI: 0000000000000003 RBP: ffff888022ee6650 R08: 0000000000000000 R09: 0000000000000000 R10: ffffffff82147aa1 R11: 0000000000000000 R12: 0000000000000800 R13: ffffc9000274f418 R14: dffffc0000000000 R15: ffff888022ee6678 FS: 0000000000000000(0000) GS:ffff88802cc00000(0063) knlGS:0000000057fb1380 CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 CR2: 00000000f704a024 CR3: 000000006731f000 CR4: 0000000000152ee0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: write_inode fs/fs-writeback.c:1471 [inline] __writeback_single_inode+0xb70/0x10d0 fs/fs-writeback.c:1683 writeback_single_inode+0x2a5/0x460 fs/fs-writeback.c:1739 write_inode_now+0x15c/0x1d0 fs/fs-writeback.c:2739 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 dentry_kill fs/dcache.c:745 [inline] dput+0x64d/0xbd0 fs/dcache.c:913 ovl_destroy_inode+0x38/0x110 fs/overlayfs/super.c:207 destroy_inode+0xc4/0x1b0 fs/inode.c:310 iput_final fs/inode.c:1744 [inline] iput.part.0+0x562/0x820 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+0x128/0x490 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:773 shrink_slab_memcg mm/vmscan.c:842 [inline] shrink_slab+0x3ee/0x6f0 mm/vmscan.c:921 shrink_node_memcgs mm/vmscan.c:3172 [inline] shrink_node+0x8c1/0x1eb0 mm/vmscan.c:3293 shrink_zones mm/vmscan.c:3530 [inline] do_try_to_free_pages+0x376/0x1700 mm/vmscan.c:3588 try_to_free_mem_cgroup_pages+0x2cd/0x840 mm/vmscan.c:3902 reclaim_high.constprop.0+0x190/0x250 mm/memcontrol.c:2300 mem_cgroup_handle_over_high+0x18c/0x540 mm/memcontrol.c:2484 tracehook_notify_resume include/linux/tracehook.h:197 [inline] exit_to_user_mode_loop kernel/entry/common.c:175 [inline] exit_to_user_mode_prepare+0x1ab/0x290 kernel/entry/common.c:207 __syscall_exit_to_user_mode_work kernel/entry/common.c:289 [inline] syscall_exit_to_user_mode+0x19/0x60 kernel/entry/common.c:300 __do_fast_syscall_32+0x72/0xf0 arch/x86/entry/common.c:181 do_fast_syscall_32+0x2f/0x70 arch/x86/entry/common.c:203 entry_SYSENTER_compat_after_hwframe+0x4d/0x5c RIP: 0023:0xf6f04549 Code: 03 74 c0 01 10 05 03 74 b8 01 10 06 03 74 b4 01 10 07 03 74 b0 01 10 08 03 74 d8 01 00 00 00 00 00 51 52 55 89 e5 0f 34 cd 80 <5d> 5a 59 c3 90 90 90 90 8d b4 26 00 00 00 00 8d b4 26 00 00 00 00 RSP: 002b:00000000ff922dc0 EFLAGS: 00000287 ORIG_RAX: 0000000000000127 RAX: 0000000000000003 RBX: 00000000ffffff9c RCX: 00000000ff923f34 RDX: 0000000000098800 RSI: 0000000000000000 RDI: 00000000f6fb5462 RBP: 0000000000000bb8 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 ---------------- Code disassembly (best guess): 0: 03 74 c0 01 add 0x1(%rax,%rax,8),%esi 4: 10 05 03 74 b8 01 adc %al,0x1b87403(%rip) # 0x1b8740d a: 10 06 adc %al,(%rsi) c: 03 74 b4 01 add 0x1(%rsp,%rsi,4),%esi 10: 10 07 adc %al,(%rdi) 12: 03 74 b0 01 add 0x1(%rax,%rsi,4),%esi 16: 10 08 adc %cl,(%rax) 18: 03 74 d8 01 add 0x1(%rax,%rbx,8),%esi 1c: 00 00 add %al,(%rax) 1e: 00 00 add %al,(%rax) 20: 00 51 52 add %dl,0x52(%rcx) 23: 55 push %rbp 24: 89 e5 mov %esp,%ebp 26: 0f 34 sysenter 28: cd 80 int $0x80 * 2a: 5d pop %rbp <-- trapping instruction 2b: 5a pop %rdx 2c: 59 pop %rcx 2d: c3 retq 2e: 90 nop 2f: 90 nop 30: 90 nop 31: 90 nop 32: 8d b4 26 00 00 00 00 lea 0x0(%rsi,%riz,1),%esi 39: 8d b4 26 00 00 00 00 lea 0x0(%rsi,%riz,1),%esi