general protection fault, probably for non-canonical address 0xe0e0dce0e0e0e0e3: 0000 [#1] PREEMPT SMP KASAN KASAN: maybe wild-memory-access in range [0x0707070707070718-0x070707070707071f] CPU: 1 PID: 9590 Comm: kworker/u4:8 Not tainted 5.14.0-rc4-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Workqueue: netns cleanup_net RIP: 0010:nfsd_reply_cache_free_locked+0x31/0x3b0 fs/nfsd/nfscache.c:123 Code: 54 49 89 fc 55 48 89 f5 53 48 89 d3 48 83 ec 08 e8 34 ce 19 ff 48 8d 7d 61 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 <0f> b6 04 02 48 89 fa 83 e2 07 38 d0 7f 08 84 c0 0f 85 c3 02 00 00 RSP: 0018:ffffc900032d7b70 EFLAGS: 00010202 RAX: dffffc0000000000 RBX: ffff88808fc24000 RCX: 0000000000000000 RDX: 00e0e0e0e0e0e0e3 RSI: ffffffff825bcd2c RDI: 0707070707070718 RBP: 07070707070706b7 R08: 0000000000000800 R09: ffffffff8fcd48af R10: ffffffff825bdbae R11: 0000000000086088 R12: ffff88800010f1a8 R13: 000000000000f1a8 R14: ffffed1000021e36 R15: ffff88800010f1a8 FS: 0000000000000000(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000000050 CR3: 00000001429bd000 CR4: 00000000001506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: nfsd_reply_cache_shutdown+0x153/0x2d0 fs/nfsd/nfscache.c:222 nfsd_exit_net+0x10e/0x4b0 fs/nfsd/nfsctl.c:1503 ops_exit_list+0xb0/0x160 net/core/net_namespace.c:175 cleanup_net+0x4ea/0xb10 net/core/net_namespace.c:595 process_one_work+0x98d/0x1630 kernel/workqueue.c:2276 worker_thread+0x658/0x11f0 kernel/workqueue.c:2422 kthread+0x3e5/0x4d0 kernel/kthread.c:319 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295 Modules linked in: ---[ end trace 1ac402fe00447c06 ]--- RIP: 0010:nfsd_reply_cache_free_locked+0x31/0x3b0 fs/nfsd/nfscache.c:123 Code: 54 49 89 fc 55 48 89 f5 53 48 89 d3 48 83 ec 08 e8 34 ce 19 ff 48 8d 7d 61 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 <0f> b6 04 02 48 89 fa 83 e2 07 38 d0 7f 08 84 c0 0f 85 c3 02 00 00 RSP: 0018:ffffc900032d7b70 EFLAGS: 00010202 RAX: dffffc0000000000 RBX: ffff88808fc24000 RCX: 0000000000000000 RDX: 00e0e0e0e0e0e0e3 RSI: ffffffff825bcd2c RDI: 0707070707070718 RBP: 07070707070706b7 R08: 0000000000000800 R09: ffffffff8fcd48af R10: ffffffff825bdbae R11: 0000000000086088 R12: ffff88800010f1a8 R13: 000000000000f1a8 R14: ffffed1000021e36 R15: ffff88800010f1a8 FS: 0000000000000000(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f31ded4f000 CR3: 00000000531a5000 CR4: 00000000001506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400