Warning: Permanently added '10.128.10.42' (ECDSA) to the list of known hosts. 2019/08/01 03:14:54 parsed 1 programs 2019/08/01 03:14:54 executed programs: 0 [ 48.830090] IPVS: ftp: loaded support on port[0] = 21 [ 48.840331] IPVS: ftp: loaded support on port[0] = 21 [ 48.841282] IPVS: ftp: loaded support on port[0] = 21 [ 48.857987] IPVS: ftp: loaded support on port[0] = 21 [ 48.858001] IPVS: ftp: loaded support on port[0] = 21 [ 48.884390] IPVS: ftp: loaded support on port[0] = 21 [ 49.237388] ================================================================== [ 49.244890] BUG: KASAN: use-after-free in __list_del_entry_valid+0xe7/0xf3 [ 49.251881] Read of size 8 at addr ffff8881c6420628 by task syz-executor/4225 [ 49.259126] [ 49.260742] CPU: 0 PID: 4225 Comm: syz-executor Not tainted 5.3.0-rc2+ #1 [ 49.267644] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 49.276972] Call Trace: [ 49.279541] dump_stack+0x115/0x167 [ 49.283147] ? __list_del_entry_valid+0xe7/0xf3 [ 49.287795] print_address_description+0x6f/0x2fe [ 49.292612] ? __list_del_entry_valid+0xe7/0xf3 [ 49.297254] ? __list_del_entry_valid+0xe7/0xf3 [ 49.302003] __kasan_report.cold.7+0x1b/0x3f [ 49.306562] ? __list_del_entry_valid+0xe7/0xf3 [ 49.311214] kasan_report+0x12/0x17 [ 49.314825] __asan_report_load8_noabort+0x14/0x20 [ 49.319734] __list_del_entry_valid+0xe7/0xf3 [ 49.324208] cma_cancel_operation+0x2f7/0x9c0 [ 49.328678] ? __kasan_check_read+0x11/0x20 [ 49.332982] rdma_destroy_id+0x8d/0x9c0 [ 49.337542] ? complete+0x62/0x80 [ 49.341063] ucma_close+0x101/0x2d0 [ 49.344681] __fput+0x25a/0x780 [ 49.347951] ____fput+0x9/0x10 [ 49.351125] task_work_run+0x10e/0x190 [ 49.354997] do_exit+0x79f/0x2d40 [ 49.358428] ? rdma_bind_addr+0x617/0x1c00 [ 49.362650] ? find_held_lock+0x36/0x1d0 [ 49.366895] ? mm_update_next_owner+0x650/0x650 [ 49.371540] ? get_signal+0x2c4/0x1d10 [ 49.376103] ? lock_downgrade+0x900/0x900 [ 49.380225] ? __kasan_check_write+0x14/0x20 [ 49.384618] ? do_raw_spin_lock+0x123/0x2d0 [ 49.388918] ? _raw_spin_unlock_irq+0x27/0x70 [ 49.393474] ? get_signal+0x2c4/0x1d10 [ 49.397355] do_group_exit+0xf4/0x2e0 [ 49.401145] get_signal+0x368/0x1d10 [ 49.404839] ? __kasan_check_write+0x14/0x20 [ 49.409224] ? _copy_from_user+0xd6/0x110 [ 49.413462] do_signal+0x87/0x16c0 [ 49.416996] ? __vfs_write+0x61/0x110 [ 49.420774] ? setup_sigcontext+0x7d0/0x7d0 [ 49.425075] ? __x64_sys_futex+0x1cb/0x390 [ 49.429313] ? exit_to_usermode_loop+0x3a/0x210 [ 49.433987] ? do_syscall_64+0x468/0x550 [ 49.438025] ? lockdep_hardirqs_on+0x424/0x5c0 [ 49.442582] ? exit_to_usermode_loop+0x3a/0x210 [ 49.447227] ? trace_hardirqs_on+0x28/0x180 [ 49.451528] exit_to_usermode_loop+0x114/0x210 [ 49.456095] do_syscall_64+0x468/0x550 [ 49.459969] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 49.465146] RIP: 0033:0x4549c9 [ 49.468316] Code: e8 6c b8 02 00 48 83 c4 18 c3 0f 1f 80 00 00 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 0b ba fb ff c3 66 2e 0f 1f 84 00 00 00 00 [ 49.487290] RSP: 002b:00007f1746392ce8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca [ 49.494973] RAX: fffffffffffffe00 RBX: 000000000072bf80 RCX: 00000000004549c9 [ 49.502218] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 000000000072bf80 [ 49.509462] RBP: 000000000072bf80 R08: 0000000000000000 R09: 000000000072bf58 [ 49.516711] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 49.523962] R13: 00007ffe2090f80f R14: 00007f17463939c0 R15: 0000000000000001 [ 49.531231] [ 49.532835] Allocated by task 4210: [ 49.536439] save_stack+0x21/0x90 [ 49.539869] __kasan_kmalloc.constprop.7+0xc1/0xd0 [ 49.544774] kasan_kmalloc+0x9/0x10 [ 49.548374] kmem_cache_alloc_trace+0x15b/0x760 [ 49.553019] __rdma_create_id+0x5c/0x4d0 [ 49.557059] ucma_create_id+0x199/0x550 [ 49.561006] ucma_write+0x206/0x2e0 [ 49.564606] __vfs_write+0x61/0x110 [ 49.568206] vfs_write+0x191/0x4c0 [ 49.571721] ksys_write+0x197/0x220 [ 49.575328] __x64_sys_write+0x6e/0xb0 [ 49.579201] do_syscall_64+0xd6/0x550 [ 49.582978] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 49.588140] [ 49.589742] Freed by task 4210: [ 49.592999] save_stack+0x21/0x90 [ 49.596429] __kasan_slab_free+0x11a/0x170 [ 49.600639] kasan_slab_free+0xe/0x10 [ 49.604416] kfree+0xfa/0x290 [ 49.607499] rdma_destroy_id+0x5f3/0x9c0 [ 49.611547] ucma_close+0x101/0x2d0 [ 49.615169] __fput+0x25a/0x780 [ 49.618422] ____fput+0x9/0x10 [ 49.621590] task_work_run+0x10e/0x190 [ 49.625453] do_exit+0x79f/0x2d40 [ 49.628878] do_group_exit+0xf4/0x2e0 [ 49.632652] get_signal+0x368/0x1d10 [ 49.636341] do_signal+0x87/0x16c0 [ 49.639858] exit_to_usermode_loop+0x114/0x210 [ 49.644414] do_syscall_64+0x468/0x550 [ 49.648277] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 49.653439] [ 49.655047] The buggy address belongs to the object at ffff8881c6420440 [ 49.655047] which belongs to the cache kmalloc-2k of size 2048 [ 49.667677] The buggy address is located 488 bytes inside of [ 49.667677] 2048-byte region [ffff8881c6420440, ffff8881c6420c40) [ 49.679609] The buggy address belongs to the page: [ 49.684517] page:ffffea0007190800 refcount:1 mapcount:0 mapping:ffff8881da000e00 index:0x0 compound_mapcount: 0 [ 49.694821] flags: 0x2fffc0000010200(slab|head) [ 49.699465] raw: 02fffc0000010200 ffffea0006f9af08 ffffea00071aa308 ffff8881da000e00 [ 49.707321] raw: 0000000000000000 ffff8881c6420440 0000000100000003 0000000000000000 [ 49.715175] page dumped because: kasan: bad access detected [ 49.720859] [ 49.722462] Memory state around the buggy address: [ 49.727364] ffff8881c6420500: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 49.734695] ffff8881c6420580: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 49.742027] >ffff8881c6420600: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 49.749361] ^ [ 49.754002] ffff8881c6420680: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 49.761334] ffff8881c6420700: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 49.768667] ================================================================== [ 49.775999] Disabling lock debugging due to kernel taint [ 49.781580] Kernel panic - not syncing: panic_on_warn set ... [ 49.787446] CPU: 0 PID: 4225 Comm: syz-executor Tainted: G B 5.3.0-rc2+ #1 [ 49.795820] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 49.805147] Call Trace: [ 49.807713] dump_stack+0x115/0x167 [ 49.811315] ? __list_del_entry_valid+0x10/0xf3 [ 49.815958] panic+0x223/0x4ee [ 49.819125] ? add_taint.cold.7+0x11/0x11 [ 49.823249] ? do_raw_spin_unlock+0x54/0x260 [ 49.827630] ? do_raw_spin_unlock+0x54/0x260 [ 49.832009] ? __list_del_entry_valid+0xe7/0xf3 [ 49.836650] ? __list_del_entry_valid+0xe7/0xf3 [ 49.841299] end_report+0x47/0x4f [ 49.844724] __kasan_report.cold.7+0xe/0x3f [ 49.849021] ? __list_del_entry_valid+0xe7/0xf3 [ 49.853667] kasan_report+0x12/0x17 [ 49.857267] __asan_report_load8_noabort+0x14/0x20 [ 49.862169] __list_del_entry_valid+0xe7/0xf3 [ 49.866654] cma_cancel_operation+0x2f7/0x9c0 [ 49.871124] ? __kasan_check_read+0x11/0x20 [ 49.875423] rdma_destroy_id+0x8d/0x9c0 [ 49.879371] ? complete+0x62/0x80 [ 49.882804] ucma_close+0x101/0x2d0 [ 49.886410] __fput+0x25a/0x780 [ 49.889668] ____fput+0x9/0x10 [ 49.892834] task_work_run+0x10e/0x190 [ 49.896702] do_exit+0x79f/0x2d40 [ 49.900128] ? rdma_bind_addr+0x617/0x1c00 [ 49.904334] ? find_held_lock+0x36/0x1d0 [ 49.908371] ? mm_update_next_owner+0x650/0x650 [ 49.913017] ? get_signal+0x2c4/0x1d10 [ 49.916879] ? lock_downgrade+0x900/0x900 [ 49.921006] ? __kasan_check_write+0x14/0x20 [ 49.925388] ? do_raw_spin_lock+0x123/0x2d0 [ 49.929690] ? _raw_spin_unlock_irq+0x27/0x70 [ 49.934163] ? get_signal+0x2c4/0x1d10 [ 49.938029] do_group_exit+0xf4/0x2e0 [ 49.941806] get_signal+0x368/0x1d10 [ 49.945493] ? __kasan_check_write+0x14/0x20 [ 49.949876] ? _copy_from_user+0xd6/0x110 [ 49.954002] do_signal+0x87/0x16c0 [ 49.957516] ? __vfs_write+0x61/0x110 [ 49.961295] ? setup_sigcontext+0x7d0/0x7d0 [ 49.965593] ? __x64_sys_futex+0x1cb/0x390 [ 49.969825] ? exit_to_usermode_loop+0x3a/0x210 [ 49.974466] ? do_syscall_64+0x468/0x550 [ 49.978499] ? lockdep_hardirqs_on+0x424/0x5c0 [ 49.983055] ? exit_to_usermode_loop+0x3a/0x210 [ 49.987699] ? trace_hardirqs_on+0x28/0x180 [ 49.991995] exit_to_usermode_loop+0x114/0x210 [ 49.996556] do_syscall_64+0x468/0x550 [ 50.000417] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 50.005578] RIP: 0033:0x4549c9 [ 50.008744] Code: e8 6c b8 02 00 48 83 c4 18 c3 0f 1f 80 00 00 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 0b ba fb ff c3 66 2e 0f 1f 84 00 00 00 00 [ 50.027620] RSP: 002b:00007f1746392ce8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca [ 50.035299] RAX: fffffffffffffe00 RBX: 000000000072bf80 RCX: 00000000004549c9 [ 50.042541] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 000000000072bf80 [ 50.049785] RBP: 000000000072bf80 R08: 0000000000000000 R09: 000000000072bf58 [ 50.057048] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 50.064292] R13: 00007ffe2090f80f R14: 00007f17463939c0 R15: 0000000000000001 [ 50.072111] Kernel Offset: disabled [ 50.075745] Rebooting in 86400 seconds..