syz-executor7 invoked oom-killer: gfp_mask=0x6000c0(GFP_KERNEL), nodemask=(null), order=0, oom_score_adj=0 kasan: CONFIG_KASAN_INLINE enabled syz-executor7 cpuset= kasan: GPF could be caused by NULL-ptr deref or user memory access / general protection fault: 0000 [#1] SMP KASAN CPU: 0 PID: 8621 Comm: syz-executor7 Not tainted 4.18.0-rc7+ #175 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 mems_allowed=0 RIP: 0010:tcp_sk_exit+0x5a/0x230 net/ipv4/tcp_ipv4.c:2496 Code: CPU: 1 PID: 8606 Comm: syz-executor7 Not tainted 4.18.0-rc7+ #175 03 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: 80 __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x1c9/0x2b4 lib/dump_stack.c:113 3c 02 00 dump_header+0x27b/0xf64 mm/oom_kill.c:432 0f 85 d0 01 00 00 49 8b 9d 08 09 00 00 48 oom_kill_process.cold.25+0x10/0x10bc mm/oom_kill.c:867 b8 00 00 00 00 00 fc ff df 48 8d bb 90 00 00 00 out_of_memory+0xa8a/0x14d0 mm/oom_kill.c:1081 48 89 fa 48 mem_cgroup_out_of_memory+0x15e/0x210 mm/memcontrol.c:1212 c1 ea 03 mem_cgroup_oom_synchronize+0x713/0x940 mm/memcontrol.c:1557 <80> 3c 02 pagefault_out_of_memory+0xc8/0x197 mm/oom_kill.c:1107 00 0f 85 mm_fault_error+0x1de/0x380 arch/x86/mm/fault.c:1024 9d __do_page_fault+0xd25/0xe50 arch/x86/mm/fault.c:1424 01 00 00 48 8b do_page_fault+0xf6/0x8c0 arch/x86/mm/fault.c:1471 bb 90 00 00 00 bb ff ff page_fault+0x1e/0x30 arch/x86/entry/entry_64.S:1160 ff RIP: 0033:0x40e33f Code: ff 0f 84 c8 RSP: 0018:ffff880199f07620 EFLAGS: 00010206 02 00 RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffc90002216000 00 48 RDX: 0000000000000012 RSI: ffffffff85846199 RDI: 0000000000000090 83 bd RBP: ffff880199f07668 R08: ffff8801d51ea480 R09: ffffed003b6046d6 78 ff R10: ffffed003b6046d6 R11: ffff8801db0236b3 R12: 0000000000000001 ff ff R13: ffff8801932f85c0 R14: ffffed00333e0ed8 R15: ffff880199f07740 00 0f FS: 00007f13f4184700(0000) GS:ffff8801db000000(0000) knlGS:0000000000000000 84 f9 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 04 00 CR2: 0000000000625208 CR3: 00000001d0108000 CR4: 00000000001406f0 00 48 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 8b 95 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 68 ff Call Trace: ff ff tcp_sk_init+0xdc6/0x12b0 net/ipv4/tcp_ipv4.c:2601 44 89 95 38 ff ff ff 4c 8d ac 10 00 ops_init+0x101/0x560 net/core/net_namespace.c:128 f7 ff ff <49> setup_net+0x3d9/0x980 net/core/net_namespace.c:313 89 85 90 06 00 00 49 8d 85 10 03 00 00 49 89 95 copy_net_ns+0x2b8/0x4d0 net/core/net_namespace.c:436 98 06 00 00 41 RSP: 002b:0000000000a3fc20 EFLAGS: 00010206 create_new_namespaces+0x6ad/0x900 kernel/nsproxy.c:107 RAX: 00007f13f4101000 RBX: 0000000000020000 RCX: 0000000000456b7a RDX: 0000000000021000 RSI: 0000000000021000 RDI: 0000000000000000 RBP: 0000000000a3fd00 R08: ffffffffffffffff R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000a3fdf0 R13: 00007f13f4121700 R14: 0000000000000003 R15: 0000000000000004 Task in unshare_nsproxy_namespaces+0xc3/0x1f0 kernel/nsproxy.c:206 /ile0 ksys_unshare+0x723/0xfb0 kernel/fork.c:2442 killed as a result of limit of /ile0 memory: usage 64kB, limit 0kB, failcnt 20 memory+swap: usage 0kB, limit 9007199254740988kB, failcnt 0 kmem: usage 0kB, limit 9007199254740988kB, failcnt 0 Memory cgroup stats for __do_sys_unshare kernel/fork.c:2510 [inline] __se_sys_unshare kernel/fork.c:2508 [inline] __x64_sys_unshare+0x31/0x40 kernel/fork.c:2508 do_syscall_64+0x1b9/0x820 arch/x86/entry/common.c:290 /ile0 : cache:0KB rss:8KB entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x456b29 rss_huge:0KB Code: fd b4 fb shmem:0KB ff c3 66 2e 0f mapped_file:0KB 1f 84 00 00 00 dirty:0KB 00 00 66 90 48 writeback:0KB 89 f8 48 89 f7 swap:0KB 48 89 d6 48 inactive_anon:0KB 89 ca 4d 89 c2 4d active_anon:0KB 89 c8 4c 8b 4c 24 08 inactive_file:0KB 0f 05 <48> 3d 01 active_file:0KB f0 ff ff 0f 83 unevictable:0KB cb b4 fb ff c3 66 2e 0f 1f 84 [ pid ] uid tgid total_vm rss pgtables_bytes swapents oom_score_adj name 00 00 00 00 [ 8606] 0 8606 17717 8731 131072 0 0 syz-executor7 RSP: 002b:00007f13f4183c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000110 RAX: ffffffffffffffda RBX: 00007f13f41846d4 RCX: 0000000000456b29 Memory cgroup out of memory: Kill process 8606 (syz-executor7) score 8763000 or sacrifice child RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000060040200 RBP: 0000000000930140 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff Killed process 8606 (syz-executor7) total-vm:70868kB, anon-rss:2156kB, file-rss:32768kB, shmem-rss:0kB R13: 00000000004d6140 R14: 00000000004c9843 R15: 0000000000000001 Modules linked in: Dumping ftrace buffer: (ftrace buffer empty) ---[ end trace f4f449fcff085a6d ]--- RIP: 0010:tcp_sk_exit+0x5a/0x230 net/ipv4/tcp_ipv4.c:2496 Code: 03 80 3c 02 00 0f 85 d0 01 00 00 49 8b 9d 08 09 00 00 48 b8 00 00 00 00 00 fc ff df 48 8d bb 90 00 00 00 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 9d 01 00 00 48 8b bb 90 00 00 00 bb ff ff ff ff RSP: 0018:ffff880199f07620 EFLAGS: 00010206 RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffc90002216000 RDX: 0000000000000012 RSI: ffffffff85846199 RDI: 0000000000000090 RBP: ffff880199f07668 R08: ffff8801d51ea480 R09: ffffed003b6046d6 R10: ffffed003b6046d6 R11: ffff8801db0236b3 R12: 0000000000000001 R13: ffff8801932f85c0 R14: ffffed00333e0ed8 R15: ffff880199f07740 FS: 00007f13f4184700(0000) GS:ffff8801db000000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000625208 CR3: 00000001d0108000 CR4: 00000000001406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400