| TITLE: WARNING: proc registration bug in clusterip_tg_check |
| |
| [ 126.768183] ------------[ cut here ]------------ |
| [ 126.773124] proc_dir_entry 'ipt_CLUSTERIP/172.20.0.170' already registered |
| [ 126.780219] WARNING: CPU: 1 PID: 4074 at fs/proc/generic.c:330 proc_register+0x2a4/0x370 |
| [ 126.788421] Kernel panic - not syncing: panic_on_warn set ... |
| [ 126.788421] |
| [ 126.795777] CPU: 1 PID: 4074 Comm: syzkaller105937 Not tainted 4.15.0+ #221 |
| [ 126.802846] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 |
| [ 126.812171] Call Trace: |
| [ 126.814739] dump_stack+0x194/0x257 |
| [ 126.818340] ? arch_local_irq_restore+0x53/0x53 |
| [ 126.822990] ? vsnprintf+0x1ed/0x1900 |
| [ 126.826768] panic+0x1e4/0x41c |
| [ 126.829933] ? refcount_error_report+0x214/0x214 |
| [ 126.834664] ? show_regs_print_info+0x18/0x18 |
| [ 126.839136] ? __warn+0x1c1/0x200 |
| [ 126.842565] ? proc_register+0x2a4/0x370 |
| [ 126.846596] __warn+0x1dc/0x200 |
| [ 126.849849] ? proc_register+0x2a4/0x370 |
| [ 126.853885] report_bug+0x211/0x2d0 |
| [ 126.857493] fixup_bug.part.11+0x37/0x80 |
| [ 126.861528] do_error_trap+0x2d7/0x3e0 |
| [ 126.865387] ? vprintk_default+0x28/0x30 |
| [ 126.869422] ? math_error+0x400/0x400 |
| [ 126.873192] ? printk+0xaa/0xca |
| [ 126.876445] ? show_regs_print_info+0x18/0x18 |
| [ 126.880924] ? trace_hardirqs_off_thunk+0x1a/0x1c |
| [ 126.885744] do_invalid_op+0x1b/0x20 |
| [ 126.889432] invalid_op+0x22/0x40 |
| [ 126.892860] RIP: 0010:proc_register+0x2a4/0x370 |
| [ 126.897499] RSP: 0018:ffff8801da886e20 EFLAGS: 00010286 |
| [ 126.902834] RAX: dffffc0000000008 RBX: ffff8801d21cc7b8 RCX: ffffffff815a57ae |
| [ 126.910075] RDX: 0000000000000000 RSI: 1ffff1003b510d74 RDI: 1ffff1003b510d49 |
| [ 126.917320] RBP: ffff8801da886e70 R08: 1ffff1003b510d0b R09: 0000000000000000 |
| [ 126.924563] R10: ffff8801da886cd8 R11: 0000000000000000 R12: ffff8801cbf66440 |
| [ 126.932597] R13: dffffc0000000000 R14: ffff8801ca2fa348 R15: ffff8801cbf66501 |
| [ 126.939857] ? vprintk_func+0x5e/0xc0 |
| [ 126.943647] proc_create_data+0xf8/0x180 |
| [ 126.947687] clusterip_tg_check+0xf9c/0x16d0 |
| [ 126.952072] ? arp_mangle+0x550/0x550 |
| [ 126.955847] ? xt_find_target+0x150/0x1e0 |
| [ 126.959970] ? lock_downgrade+0x980/0x980 |
| [ 126.964091] ? rcu_read_lock_sched_held+0x108/0x120 |
| [ 126.969080] ? pcpu_alloc+0x146/0x10e0 |
| [ 126.972950] ? pcpu_free_area+0xa00/0xa00 |
| [ 126.977081] ? __mutex_unlock_slowpath+0xe9/0xac0 |
| [ 126.981899] ? kernel_text_address+0x102/0x140 |
| [ 126.986460] ? wait_for_completion+0x770/0x770 |
| [ 126.991025] ? unwind_get_return_address+0x61/0xa0 |
| [ 126.995928] ? __save_stack_trace+0x7e/0xd0 |
| [ 127.000226] ? arp_mangle+0x550/0x550 |
| [ 127.004004] xt_check_target+0x22c/0x7d0 |
| [ 127.008052] ? xt_target_seq_next+0x30/0x30 |
| [ 127.012352] ? save_stack+0xa3/0xd0 |
| [ 127.015956] ? save_stack+0x43/0xd0 |
| [ 127.019556] ? kasan_slab_free+0x71/0xc0 |
| [ 127.023587] ? kfree+0xd6/0x260 |
| [ 127.026844] ? mutex_unlock+0xd/0x10 |
| [ 127.030530] ? xt_find_target+0x17b/0x1e0 |
| [ 127.034664] find_check_entry.isra.8+0x8c8/0xcb0 |
| [ 127.039411] ? ipt_do_table+0x1950/0x1950 |
| [ 127.043545] ? trace_hardirqs_off+0xd/0x10 |
| [ 127.047752] ? quarantine_put+0xeb/0x190 |
| [ 127.051785] ? kfree+0xf0/0x260 |
| [ 127.055042] ? trace_hardirqs_on+0xd/0x10 |
| [ 127.059165] translate_table+0xed1/0x1610 |
| [ 127.063300] ? alloc_counters.isra.11+0x7d0/0x7d0 |
| [ 127.068118] ? kasan_check_write+0x14/0x20 |
| [ 127.072327] ? _copy_from_user+0x99/0x110 |
| [ 127.076537] do_ipt_set_ctl+0x370/0x5f0 |
| [ 127.080488] ? translate_compat_table+0x1b90/0x1b90 |
| [ 127.085496] ? mutex_unlock+0xd/0x10 |
| [ 127.089181] ? nf_sockopt_find.constprop.0+0x1a7/0x220 |
| [ 127.094438] nf_setsockopt+0x67/0xc0 |
| [ 127.098128] ip_setsockopt+0x97/0xa0 |
| [ 127.101826] sctp_setsockopt+0x2b6/0x61d0 |
| [ 127.105950] ? sctp_setsockopt_paddr_thresholds+0x550/0x550 |
| [ 127.111647] ? debug_check_no_locks_freed+0x3c0/0x3c0 |
| [ 127.116814] ? lru_cache_add+0x1c7/0x3a0 |
| [ 127.120858] ? mem_cgroup_css_offline+0x510/0x510 |
| [ 127.125685] ? check_noncircular+0x20/0x20 |
| [ 127.129892] ? __mem_cgroup_threshold+0x8f0/0x8f0 |
| [ 127.134710] ? mark_held_locks+0xaf/0x100 |
| [ 127.138835] ? find_held_lock+0x35/0x1d0 |
| [ 127.142878] ? check_noncircular+0x20/0x20 |
| [ 127.147086] ? lock_downgrade+0x980/0x980 |
| [ 127.151207] ? check_noncircular+0x20/0x20 |
| [ 127.155424] ? lock_release+0xa40/0xa40 |
| [ 127.159388] ? find_held_lock+0x35/0x1d0 |
| [ 127.163434] ? avc_has_perm+0x35e/0x680 |
| [ 127.167382] ? lock_downgrade+0x980/0x980 |
| [ 127.171506] ? lock_release+0xa40/0xa40 |
| [ 127.175451] ? lock_downgrade+0x980/0x980 |
| [ 127.179583] ? __pmd_alloc+0x4e0/0x4e0 |
| [ 127.183446] ? lock_release+0xa40/0xa40 |
| [ 127.187395] ? __lock_is_held+0xb6/0x140 |
| [ 127.191436] ? avc_has_perm+0x43e/0x680 |
| [ 127.195387] ? avc_has_perm_noaudit+0x520/0x520 |
| [ 127.200036] ? iterate_fd+0x3f0/0x3f0 |
| [ 127.203895] ? lock_downgrade+0x980/0x980 |
| [ 127.208026] ? handle_mm_fault+0x476/0x930 |
| [ 127.212229] ? down_read_trylock+0xdb/0x170 |
| [ 127.216523] ? __handle_mm_fault+0x3ce0/0x3ce0 |
| [ 127.221073] ? vmacache_find+0x5f/0x280 |
| [ 127.225023] ? sock_has_perm+0x2a4/0x420 |
| [ 127.229059] ? selinux_secmark_relabel_packet+0xc0/0xc0 |
| [ 127.234396] ? __do_page_fault+0x3d6/0xc90 |
| [ 127.238609] ? selinux_netlbl_socket_setsockopt+0x10c/0x460 |
| [ 127.244291] ? selinux_netlbl_sock_rcv_skb+0x730/0x730 |
| [ 127.249563] sock_common_setsockopt+0x95/0xd0 |
| [ 127.254034] SyS_setsockopt+0x189/0x360 |
| [ 127.257985] ? SyS_recv+0x40/0x40 |
| [ 127.261419] ? entry_SYSCALL_64_fastpath+0x5/0xa0 |
| [ 127.266235] ? trace_hardirqs_on_caller+0x421/0x5c0 |
| [ 127.271224] ? trace_hardirqs_on_thunk+0x1a/0x1c |
| [ 127.275957] entry_SYSCALL_64_fastpath+0x29/0xa0 |
| [ 127.280685] RIP: 0033:0x44afa9 |
| [ 127.283845] RSP: 002b:00007f43f70edce8 EFLAGS: 00000246 ORIG_RAX: 0000000000000036 |
| [ 127.291525] RAX: ffffffffffffffda RBX: 00000000006e0c3c RCX: 000000000044afa9 |
| [ 127.298766] RDX: 0000000000000040 RSI: 0000000000000000 RDI: 0000000000000004 |
| [ 127.306007] RBP: 00000000006e0c38 R08: 0000000000000348 R09: 0000000000000000 |
| [ 127.313246] R10: 0000000020013c90 R11: 0000000000000246 R12: 0000000000000000 |
| [ 127.320488] R13: 00007ffe194fe84f R14: 00007f43f70ee9c0 R15: 0000000000000005 |
| [ 127.328274] Dumping ftrace buffer: |
| [ 127.331883] (ftrace buffer empty) |
| [ 127.335568] Kernel Offset: disabled |
| [ 127.339172] Rebooting in 86400 seconds.. |
