| TITLE: WARNING: proc registration bug in clusterip_tg_check |
| |
| [ 42.189270] ------------[ cut here ]------------ |
| [ 42.190246] ? lock_acquire+0x1d5/0x580 |
| [ 42.190260] ? tun_build_skb.isra.50+0x491/0x1810 |
| [ 42.190288] build_skb+0x6f/0x2a0 |
| [ 42.190300] ? __build_skb+0x450/0x450 |
| [ 42.190324] tun_build_skb.isra.50+0x9cb/0x1810 |
| [ 42.194637] proc_dir_entry 'ipt_CLUSTERIP/172.20.7.170' already registered |
| [ 42.198561] ? tun_flow_update+0xf70/0xf70 |
| [ 42.198581] ? print_irqtrace_events+0x270/0x270 |
| [ 42.203412] WARNING: CPU: 0 PID: 6092 at fs/proc/generic.c:330 proc_register+0x2a4/0x370 |
| [ 42.207256] ? filemap_map_pages+0x919/0x15d0 |
| [ 42.212066] Kernel panic - not syncing: panic_on_warn set ... |
| [ 42.212066] |
| [ 42.215500] ? lock_downgrade+0x980/0x980 |
| [ 42.264053] ? unlock_page+0x19f/0x270 |
| [ 42.267955] ? print_irqtrace_events+0x270/0x270 |
| [ 42.272713] ? __lock_is_held+0xb6/0x140 |
| [ 42.276766] ? print_irqtrace_events+0x270/0x270 |
| [ 42.281508] ? __lock_acquire+0x664/0x3e00 |
| [ 42.285752] ? print_irqtrace_events+0x270/0x270 |
| [ 42.290546] ? __lock_acquire+0x664/0x3e00 |
| [ 42.294791] ? debug_check_no_locks_freed+0x3c0/0x3c0 |
| [ 42.299984] ? __lock_acquire+0x664/0x3e00 |
| [ 42.304205] ? __lock_acquire+0x664/0x3e00 |
| [ 42.308443] tun_get_user+0x17d0/0x3940 |
| [ 42.312410] ? debug_check_no_locks_freed+0x3c0/0x3c0 |
| [ 42.317590] ? debug_check_no_locks_freed+0x3c0/0x3c0 |
| [ 42.322791] ? tun_build_skb.isra.50+0x1810/0x1810 |
| [ 42.327709] ? check_noncircular+0x20/0x20 |
| [ 42.331944] ? print_irqtrace_events+0x270/0x270 |
| [ 42.336688] ? debug_check_no_locks_freed+0x3c0/0x3c0 |
| [ 42.341872] ? check_noncircular+0x20/0x20 |
| [ 42.346100] ? find_held_lock+0x35/0x1d0 |
| [ 42.350161] ? tun_get+0x1ab/0x2e0 |
| [ 42.353689] ? lock_downgrade+0x980/0x980 |
| [ 42.357829] ? lock_release+0xa40/0xa40 |
| [ 42.361793] ? __lock_is_held+0xb6/0x140 |
| [ 42.365855] ? tun_get+0x1d4/0x2e0 |
| [ 42.369378] ? tun_do_read+0x26c0/0x26c0 |
| [ 42.373423] ? __check_object_size+0x8b/0x530 |
| [ 42.377905] ? rcu_note_context_switch+0x710/0x710 |
| [ 42.382827] tun_chr_write_iter+0xb9/0x160 |
| [ 42.387052] do_iter_readv_writev+0x55c/0x830 |
| [ 42.391540] ? vfs_dedupe_file_range+0x8f0/0x8f0 |
| [ 42.396296] ? rw_verify_area+0xe5/0x2b0 |
| [ 42.400349] do_iter_write+0x154/0x540 |
| [ 42.404227] ? dup_iter+0x260/0x260 |
| [ 42.407855] vfs_writev+0x18a/0x340 |
| [ 42.411470] ? __fget_light+0x297/0x380 |
| [ 42.415431] ? vfs_iter_write+0xb0/0xb0 |
| [ 42.419394] ? __mutex_unlock_slowpath+0xe9/0xac0 |
| [ 42.424219] ? vfs_write+0x374/0x510 |
| [ 42.427940] ? __fdget_pos+0x130/0x190 |
| [ 42.431811] ? __fdget_raw+0x20/0x20 |
| [ 42.435520] do_writev+0xfc/0x2a0 |
| [ 42.438957] ? do_writev+0xfc/0x2a0 |
| [ 42.442576] ? vfs_writev+0x340/0x340 |
| [ 42.446360] ? entry_SYSCALL_64_fastpath+0x5/0xa0 |
| [ 42.451192] ? trace_hardirqs_on_caller+0x421/0x5c0 |
| [ 42.456200] SyS_writev+0x27/0x30 |
| [ 42.459643] entry_SYSCALL_64_fastpath+0x29/0xa0 |
| [ 42.464380] RIP: 0033:0x453931 |
| [ 42.467552] RSP: 002b:00007f82f857dba0 EFLAGS: 00000293 ORIG_RAX: 0000000000000014 |
| [ 42.475245] RAX: ffffffffffffffda RBX: 00007f82f857da90 RCX: 0000000000453931 |
| [ 42.482500] RDX: 0000000000000001 RSI: 00007f82f857dbf0 RDI: 0000000000000012 |
| [ 42.489752] RBP: 00007f82f857da80 R08: 0000000000000012 R09: 0000000000000000 |
| [ 42.497005] R10: 0000000000000066 R11: 0000000000000293 R12: 00000000004b8925 |
| [ 42.504256] R13: 00007f82f857dbb8 R14: 00000000004b8925 R15: 0000000000000000 |
| [ 42.511541] CPU: 0 PID: 6092 Comm: syz-executor7 Not tainted 4.15.0+ #221 |
| [ 42.518470] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 |
| [ 42.527806] Call Trace: |
| [ 42.530379] dump_stack+0x194/0x257 |
| [ 42.533989] ? arch_local_irq_restore+0x53/0x53 |
| [ 42.538645] ? vsnprintf+0x1ed/0x1900 |
| [ 42.542430] panic+0x1e4/0x41c |
| [ 42.545601] ? refcount_error_report+0x214/0x214 |
| [ 42.550339] ? show_regs_print_info+0x18/0x18 |
| [ 42.554816] ? vprintk_emit+0xa5f/0xb90 |
| [ 42.558771] ? __warn+0x1c1/0x200 |
| [ 42.562206] ? proc_register+0x2a4/0x370 |
| [ 42.566243] __warn+0x1dc/0x200 |
| [ 42.569499] ? proc_register+0x2a4/0x370 |
| [ 42.573542] report_bug+0x211/0x2d0 |
| [ 42.577156] fixup_bug.part.11+0x37/0x80 |
| [ 42.581198] do_error_trap+0x2d7/0x3e0 |
| [ 42.585077] ? vprintk_default+0x28/0x30 |
| [ 42.589121] ? math_error+0x400/0x400 |
| [ 42.592912] ? printk+0xaa/0xca |
| [ 42.596171] ? show_regs_print_info+0x18/0x18 |
| [ 42.600654] ? trace_hardirqs_off_thunk+0x1a/0x1c |
| [ 42.605484] do_invalid_op+0x1b/0x20 |
| [ 42.609179] invalid_op+0x22/0x40 |
| [ 42.612620] RIP: 0010:proc_register+0x2a4/0x370 |
| [ 42.617263] RSP: 0018:ffff8801b3def528 EFLAGS: 00010286 |
| [ 42.622604] RAX: dffffc0000000008 RBX: ffff8801ae7c0af8 RCX: ffffffff815a57ae |
| [ 42.629852] RDX: 0000000000010000 RSI: ffffc900019b2000 RDI: 1ffff100367bde2a |
| [ 42.637099] RBP: ffff8801b3def578 R08: 1ffff100367bddec R09: 0000000000000000 |
| [ 42.644347] R10: ffff8801b3def3e0 R11: 0000000000000000 R12: ffff8801b3e0e0c0 |
| [ 42.651595] R13: dffffc0000000000 R14: ffff8801cb8ce488 R15: ffff8801b3e0e181 |
| [ 42.658860] ? vprintk_func+0x5e/0xc0 |
| [ 42.662658] ? proc_register+0x2a4/0x370 |
| [ 42.666900] proc_create_data+0xf8/0x180 |
| [ 42.670962] clusterip_tg_check+0xf9c/0x16d0 |
| [ 42.675359] ? arp_mangle+0x550/0x550 |
| [ 42.679139] ? xt_find_target+0x150/0x1e0 |
| [ 42.683269] ? lock_downgrade+0x980/0x980 |
| [ 42.687398] ? rcu_read_lock_sched_held+0x108/0x120 |
| [ 42.692406] ? pcpu_alloc+0x146/0x10e0 |
| [ 42.696287] ? pcpu_free_area+0xa00/0xa00 |
| [ 42.700421] ? __mutex_unlock_slowpath+0xe9/0xac0 |
| [ 42.705255] ? kernel_text_address+0x102/0x140 |
| [ 42.709822] ? wait_for_completion+0x770/0x770 |
| [ 42.714384] ? unwind_get_return_address+0x61/0xa0 |
| [ 42.719296] ? __save_stack_trace+0x7e/0xd0 |
| [ 42.723602] ? arp_mangle+0x550/0x550 |
| [ 42.727387] xt_check_target+0x22c/0x7d0 |
| [ 42.731429] ? xt_target_seq_next+0x30/0x30 |
| [ 42.735725] ? save_stack+0xa3/0xd0 |
| [ 42.739330] ? save_stack+0x43/0xd0 |
| [ 42.742932] ? kasan_slab_free+0x71/0xc0 |
| [ 42.746968] ? kfree+0xd6/0x260 |
| [ 42.750221] ? kvfree+0x36/0x60 |
| [ 42.753486] ? mutex_unlock+0xd/0x10 |
| [ 42.757179] ? xt_find_target+0x17b/0x1e0 |
| [ 42.761320] find_check_entry.isra.8+0x8c8/0xcb0 |
| [ 42.766066] ? ipt_do_table+0x1950/0x1950 |
| [ 42.770197] ? trace_hardirqs_off+0xd/0x10 |
| [ 42.774409] ? quarantine_put+0xeb/0x190 |
| [ 42.778445] ? kfree+0xf0/0x260 |
| [ 42.781710] ? trace_hardirqs_on+0xd/0x10 |
| [ 42.785845] translate_table+0xed1/0x1610 |
| [ 42.789993] ? alloc_counters.isra.11+0x7d0/0x7d0 |
| [ 42.794824] ? kasan_check_write+0x14/0x20 |
| [ 42.799043] ? _copy_from_user+0x99/0x110 |
| [ 42.803174] do_ipt_set_ctl+0x370/0x5f0 |
| [ 42.807133] ? translate_compat_table+0x1b90/0x1b90 |
| [ 42.812143] ? mutex_unlock+0xd/0x10 |
| [ 42.815837] ? nf_sockopt_find.constprop.0+0x1a7/0x220 |
| [ 42.821099] nf_setsockopt+0x67/0xc0 |
| [ 42.824795] ip_setsockopt+0x97/0xa0 |
| [ 42.828494] udp_setsockopt+0x45/0x80 |
| [ 42.832278] sock_common_setsockopt+0x95/0xd0 |
| [ 42.836760] SyS_setsockopt+0x189/0x360 |
| [ 42.840718] ? SyS_recv+0x40/0x40 |
| [ 42.844153] ? entry_SYSCALL_64_fastpath+0x5/0xa0 |
| [ 42.848977] ? trace_hardirqs_on_caller+0x421/0x5c0 |
| [ 42.853977] ? trace_hardirqs_on_thunk+0x1a/0x1c |
| [ 42.858720] entry_SYSCALL_64_fastpath+0x29/0xa0 |
| [ 42.863457] RIP: 0033:0x453a59 |
| [ 42.866625] RSP: 002b:00007fac657c6c68 EFLAGS: 00000246 ORIG_RAX: 0000000000000036 |
| [ 42.874310] RAX: ffffffffffffffda RBX: 00007fac657c76d4 RCX: 0000000000453a59 |
| [ 42.881558] RDX: 0000000000000040 RSI: 0000000000000000 RDI: 0000000000000014 |
| [ 42.888806] RBP: 000000000071bf58 R08: 0000000000000360 R09: 0000000000000000 |
| [ 42.896056] R10: 0000000020664ca0 R11: 0000000000000246 R12: 00000000ffffffff |
| [ 42.903303] R13: 0000000000000128 R14: 00000000006f1c60 R15: 0000000000000001 |
