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  1. kasan: CONFIG_KASAN_INLINE enabled
  2. kasan: GPF could be caused by NULL-ptr deref or user memory access
  3. general protection fault: 0000 [#1] SMP KASAN PTI
  4. Dumping ftrace buffer:
  5. (ftrace buffer empty)
  6. Modules linked in:
  7. CPU: 1 PID: 1376 Comm: syz-executor2 Not tainted 4.17.0-rc4+ #24
  8. Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
  9. RIP: 0010:sockfs_setattr+0xbc/0x140 net/socket.c:540
  10. RSP: 0018:ffff88008dd27c38 EFLAGS: 00010202
  11. RAX: dffffc0000000000 RBX: ffff88008dd27d80 RCX: ffffffff83c13c1e
  12. RDX: 0000000000000075 RSI: ffffc90001845000 RDI: 00000000000003a8
  13. RBP: ffff88008dd27c50 R08: ffffed0016611e38 R09: 0000000000000001
  14. R10: ffffed0016611e37 R11: ffff8800b308f1bb R12: 0000000000000000
  15. R13: 0000000000000000 R14: ffff88009dc4a4a0 R15: 0000000000000000
  16. FS: 00007f0f69c95700(0000) GS:ffff880104e80000(0000) knlGS:0000000000000000
  17. CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
  18. CR2: 0000001b31221000 CR3: 000000009a4e8001 CR4: 00000000001606e0
  19. DR0: 0000000020000000 DR1: 0000000020000000 DR2: 0000000000000000
  20. DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000600
  21. Call Trace:
  22. notify_change+0x93c/0xd30 fs/attr.c:313
  23. chown_common+0x46b/0x520 fs/open.c:643
  24. do_fchownat+0x164/0x190 fs/open.c:673
  25. __do_sys_fchownat fs/open.c:688 [inline]
  26. __se_sys_fchownat fs/open.c:685 [inline]
  27. __x64_sys_fchownat+0xbe/0x150 fs/open.c:685
  28. do_syscall_64+0xda/0x560 arch/x86/entry/common.c:287
  29. entry_SYSCALL_64_after_hwframe+0x49/0xbe
  30. RIP: 0033:0x455a09
  31. RSP: 002b:00007f0f69c94c68 EFLAGS: 00000246 ORIG_RAX: 0000000000000104
  32. RAX: ffffffffffffffda RBX: 00007f0f69c956d4 RCX: 0000000000455a09
  33. RDX: 000000000000fffe RSI: 0000000020000040 RDI: 0000000000000015
  34. RBP: 000000000072bea0 R08: 0000000000001000 R09: 0000000000000000
  35. R10: 000000000000fffe R11: 0000000000000246 R12: 00000000ffffffff
  36. R13: 0000000000000085 R14: 00000000006f4d18 R15: 0000000000000000
  37. Code: fa 48 c1 ea 03 80 3c 02 00 0f 85 87 00 00 00 4d 8b 6d f0 48 b8 00 00 00 00 00 fc ff df 49 8d bd a8 03 00 00 4
  38. 8 89 fa 48 c1 ea 03 <0f> b6 04 02 84 c0 74 04 3c 03 7e 47 48 8d 7b 08 48 b8 00 00 00
  39. RIP: sockfs_setattr+0xbc/0x140 net/socket.c:540 RSP: ffff88008dd27c38
  40. ---[ end trace fd608be4d4b9df79 ]---
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