Warning: Permanently added '10.128.0.252' (ECDSA) to the list of known hosts. 2019/11/05 20:26:54 parsed 1 programs 2019/11/05 20:26:56 executed programs: 0 syzkaller login: [ 25.230458] audit: type=1400 audit(1572985616.816:5): avc: denied { sys_admin } for pid=2064 comm="syz-executor.0" capability=21 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tclass=cap_userns permissive=1 [ 25.262232] audit: type=1400 audit(1572985616.846:6): avc: denied { net_admin } for pid=2072 comm="syz-executor.1" capability=12 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tclass=cap_userns permissive=1 [ 25.660005] audit: type=1400 audit(1572985617.246:7): avc: denied { sys_chroot } for pid=2073 comm="syz-executor.4" capability=18 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tclass=cap_userns permissive=1 [ 25.680638] audit: type=1400 audit(1572985617.246:8): avc: denied { associate } for pid=2074 comm="syz-executor.0" name="syz0" scontext=unconfined_u:object_r:unlabeled_t:s0 tcontext=system_u:object_r:unlabeled_t:s0 tclass=filesystem permissive=1 [ 25.705801] devpts: called with bogus options [ 25.734096] devpts: called with bogus options [ 25.756084] devpts: called with bogus options [ 25.781592] devpts: called with bogus options [ 25.787087] devpts: called with bogus options [ 25.787171] devpts: called with bogus options [ 25.800541] devpts: called with bogus options [ 25.823878] devpts: called with bogus options [ 25.825395] devpts: called with bogus options [ 25.826237] devpts: called with bogus options [ 25.830682] devpts: called with bogus options [ 25.871229] devpts: called with bogus options [ 25.876434] devpts: called with bogus options [ 25.877241] devpts: called with bogus options [ 25.888445] devpts: called with bogus options [ 25.890657] devpts: called with bogus options [ 25.896473] devpts: called with bogus options [ 25.897404] devpts: called with bogus options [ 25.898157] devpts: called with bogus options [ 25.900540] devpts: called with bogus options [ 25.937380] devpts: called with bogus options [ 25.943396] devpts: called with bogus options [ 25.948287] devpts: called with bogus options [ 25.948697] devpts: called with bogus options [ 26.016492] devpts: called with bogus options [ 26.016513] devpts: called with bogus options [ 26.021545] devpts: called with bogus options [ 26.022080] devpts: called with bogus options [ 26.022992] devpts: called with bogus options [ 26.026641] devpts: called with bogus options [ 26.048569] devpts: called with bogus options [ 26.051863] devpts: called with bogus options [ 26.054026] devpts: called with bogus options [ 26.063312] devpts: called with bogus options [ 26.069390] devpts: called with bogus options [ 26.075049] devpts: called with bogus options [ 26.077364] devpts: called with bogus options [ 26.077760] devpts: 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called with bogus options [ 29.634155] devpts: called with bogus options [ 29.643174] devpts: called with bogus options [ 29.654103] devpts: called with bogus options [ 29.666342] devpts: called with bogus options [ 29.701025] devpts: called with bogus options [ 29.702911] devpts: called with bogus options [ 29.707462] devpts: called with bogus options [ 29.708843] devpts: called with bogus options [ 29.722897] devpts: called with bogus options [ 29.724767] devpts: called with bogus options [ 29.743436] devpts: called with bogus options [ 29.743676] devpts: called with bogus options [ 29.760772] devpts: called with bogus options [ 29.763459] devpts: called with bogus options [ 29.766713] devpts: called with bogus options [ 29.766941] devpts: called with bogus options [ 29.767057] devpts: called with bogus options [ 29.840756] devpts: called with bogus options [ 29.844056] devpts: called with bogus options [ 29.847585] devpts: called with bogus options [ 29.848651] devpts: called with bogus options [ 29.852634] devpts: called with bogus options [ 29.866107] devpts: called with bogus options [ 29.866519] devpts: called with bogus options [ 29.887599] devpts: called with bogus options [ 29.888673] devpts: called with bogus options [ 29.892396] devpts: called with bogus options [ 29.906744] devpts: called with bogus options [ 29.915585] devpts: called with bogus options [ 29.915652] devpts: called with bogus options [ 29.923079] devpts: called with bogus options [ 29.923875] devpts: called with bogus options [ 30.001602] devpts: called with bogus options [ 30.007119] devpts: called with bogus options [ 30.013152] devpts: called with bogus options [ 30.014512] devpts: called with bogus options [ 30.028018] devpts: called with bogus options [ 30.030386] devpts: called with bogus options [ 30.045648] devpts: called with bogus options [ 30.056542] devpts: called with bogus options [ 30.062501] devpts: called with bogus options [ 30.068818] devpts: called with bogus options 2019/11/05 20:27:01 executed programs: 438 [ 30.070549] devpts: called with bogus options [ 30.072345] devpts: called with bogus options [ 30.079964] devpts: called with bogus options [ 30.084474] devpts: called with bogus options [ 30.167404] devpts: called with bogus options [ 30.168073] devpts: called with bogus options [ 30.170144] devpts: called with bogus options [ 30.180612] devpts: called with bogus options [ 30.186265] devpts: called with bogus options [ 30.190975] devpts: called with bogus options [ 30.199834] devpts: called with bogus options [ 30.201162] devpts: called with bogus options [ 30.207388] devpts: called with bogus options [ 30.211505] devpts: called with bogus options [ 30.216419] devpts: called with bogus options [ 30.227462] devpts: called with bogus options [ 30.227822] devpts: called with bogus options [ 30.228994] devpts: called with bogus options [ 30.233908] devpts: called with bogus options [ 30.339731] devpts: called with bogus options [ 30.344681] 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called with bogus options [ 30.558624] devpts: called with bogus options [ 30.561798] devpts: called with bogus options [ 30.562448] devpts: called with bogus options [ 30.564958] devpts: called with bogus options [ 30.594027] devpts: called with bogus options [ 30.601922] devpts: called with bogus options [ 30.614643] devpts: called with bogus options [ 30.618999] devpts: called with bogus options [ 30.626909] devpts: called with bogus options [ 30.632679] devpts: called with bogus options [ 30.634805] devpts: called with bogus options [ 30.635709] devpts: called with bogus options [ 30.722549] devpts: called with bogus options [ 30.728896] devpts: called with bogus options [ 30.729011] devpts: called with bogus options [ 30.744208] devpts: called with bogus options [ 30.750482] devpts: called with bogus options [ 30.753100] devpts: called with bogus options [ 30.773489] devpts: called with bogus options [ 30.773733] devpts: called with bogus options [ 30.783259] devpts: called with bogus options [ 30.787071] devpts: called with bogus options [ 30.793753] devpts: called with bogus options [ 30.794815] devpts: called with bogus options [ 30.797334] devpts: called with bogus options [ 30.823901] devpts: called with bogus options [ 30.861532] devpts: called with bogus options [ 30.867332] devpts: called with bogus options [ 30.867566] devpts: called with bogus options [ 30.887038] devpts: called with bogus options [ 30.890635] devpts: called with bogus options [ 30.903209] devpts: called with bogus options [ 30.904364] devpts: called with bogus options [ 30.910929] devpts: called with bogus options [ 30.922998] devpts: called with bogus options [ 30.924209] devpts: called with bogus options [ 30.931602] devpts: called with bogus options [ 30.932319] devpts: called with bogus options [ 30.934991] devpts: called with bogus options [ 31.001656] devpts: called with bogus options [ 31.006990] devpts: called with bogus options [ 31.014537] devpts: called with bogus options [ 31.014866] devpts: called with bogus options [ 31.022672] devpts: called with bogus options [ 31.027246] devpts: called with bogus options [ 31.046388] devpts: called with bogus options [ 31.056098] devpts: called with bogus options [ 31.068704] devpts: called with bogus options [ 31.069845] devpts: called with bogus options [ 31.073485] devpts: called with bogus options [ 31.073593] devpts: called with bogus options [ 31.077900] devpts: called with bogus options [ 31.128243] ================================================================== [ 31.128257] BUG: KASAN: use-after-free in disk_unblock_events+0x51/0x60 [ 31.128262] Read of size 8 at addr ffff8801c902b860 by task blkid/4162 [ 31.128264] [ 31.128271] CPU: 1 PID: 4162 Comm: blkid Not tainted 4.9.141+ #23 [ 31.128284] ffff8801be4d76f8 ffffffff81b42e79 ffffea0007240a00 ffff8801c902b860 [ 31.128292] 0000000000000000 ffff8801c902b860 0000000000000000 ffff8801be4d7730 [ 31.128301] ffffffff815009b8 ffff8801c902b860 0000000000000008 0000000000000000 [ 31.128302] Call Trace: [ 31.128313] [] dump_stack+0xc1/0x128 [ 31.128322] [] print_address_description+0x6c/0x234 [ 31.128329] [] kasan_report.cold.6+0x242/0x2fe [ 31.128337] [] ? disk_unblock_events+0x51/0x60 [ 31.128344] [] __asan_report_load8_noabort+0x14/0x20 [ 31.128351] [] disk_unblock_events+0x51/0x60 [ 31.128358] [] __blkdev_get+0x6b6/0xd60 [ 31.128364] [] ? __blkdev_put+0x840/0x840 [ 31.128372] [] ? fsnotify+0x114/0x1100 [ 31.128378] [] blkdev_get+0x2da/0x920 [ 31.128385] [] ? debug_lockdep_rcu_enabled+0x77/0x90 [ 31.128391] [] ? bd_may_claim+0xd0/0xd0 [ 31.128397] [] ? bd_acquire+0x27/0x250 [ 31.128403] [] ? bd_acquire+0x88/0x250 [ 31.128410] [] ? _raw_spin_unlock+0x2c/0x50 [ 31.128416] [] blkdev_open+0x1a5/0x250 [ 31.128423] [] do_dentry_open+0x3ef/0xc90 [ 31.128430] [] ? blkdev_get_by_dev+0x70/0x70 [ 31.128436] [] vfs_open+0x11c/0x210 [ 31.128443] [] ? may_open.isra.20+0x14f/0x2a0 [ 31.128450] [] path_openat+0x542/0x2790 [ 31.128457] [] ? path_mountpoint+0x6c0/0x6c0 [ 31.128464] [] ? trace_hardirqs_on+0x10/0x10 [ 31.128472] [] ? new_slab+0x22e/0x3d0 [ 31.128479] [] ? expand_files.part.3+0x3a9/0x6d0 [ 31.128486] [] do_filp_open+0x197/0x270 [ 31.128492] [] ? may_open_dev+0xe0/0xe0 [ 31.128498] [] ? _raw_spin_unlock+0x2c/0x50 [ 31.128505] [] ? __alloc_fd+0x1d7/0x4a0 [ 31.128513] [] do_sys_open+0x30d/0x5c0 [ 31.128520] [] ? filp_open+0x70/0x70 [ 31.128527] [] ? up_read+0x1a/0x40 [ 31.128534] [] SyS_open+0x2d/0x40 [ 31.128541] [] ? do_sys_open+0x5c0/0x5c0 [ 31.128547] [] do_syscall_64+0x19f/0x550 [ 31.128555] [] entry_SYSCALL_64_after_swapgs+0x5d/0xdb [ 31.128557] [ 31.128560] Allocated by task 4112: [ 31.128568] save_stack_trace+0x16/0x20 [ 31.128573] kasan_kmalloc.part.1+0x62/0xf0 [ 31.128578] kasan_kmalloc+0xaf/0xc0 [ 31.128584] kmem_cache_alloc_trace+0x117/0x2e0 [ 31.128589] alloc_disk_node+0x54/0x3a0 [ 31.128595] alloc_disk+0x18/0x20 [ 31.128601] loop_add+0x368/0x7a0 [ 31.128606] loop_probe+0x14f/0x180 [ 31.128613] kobj_lookup+0x223/0x410 [ 31.128618] get_gendisk+0x39/0x2d0 [ 31.128623] __blkdev_get+0x351/0xd60 [ 31.128627] blkdev_get+0x2da/0x920 [ 31.128632] blkdev_open+0x1a5/0x250 [ 31.128637] do_dentry_open+0x3ef/0xc90 [ 31.128643] vfs_open+0x11c/0x210 [ 31.128648] path_openat+0x542/0x2790 [ 31.128652] do_filp_open+0x197/0x270 [ 31.128658] do_sys_open+0x30d/0x5c0 [ 31.128664] compat_SyS_open+0x2a/0x40 [ 31.128669] do_fast_syscall_32+0x2f1/0xa10 [ 31.128675] entry_SYSENTER_compat+0x90/0xa2 [ 31.128676] [ 31.128678] Freed by task 4162: [ 31.128684] save_stack_trace+0x16/0x20 [ 31.128689] kasan_slab_free+0xac/0x190 [ 31.128694] kfree+0xfb/0x310 [ 31.128699] disk_release+0x259/0x330 [ 31.128704] device_release+0x7e/0x220 [ 31.128708] kobject_put+0x148/0x250 [ 31.128713] put_disk+0x23/0x30 [ 31.128718] __blkdev_get+0x616/0xd60 [ 31.128722] blkdev_get+0x2da/0x920 [ 31.128727] blkdev_open+0x1a5/0x250 [ 31.128733] do_dentry_open+0x3ef/0xc90 [ 31.128738] vfs_open+0x11c/0x210 [ 31.128743] path_openat+0x542/0x2790 [ 31.128748] do_filp_open+0x197/0x270 [ 31.128754] do_sys_open+0x30d/0x5c0 [ 31.128759] SyS_open+0x2d/0x40 [ 31.128764] do_syscall_64+0x19f/0x550 [ 31.128769] entry_SYSCALL_64_after_swapgs+0x5d/0xdb [ 31.128770] [ 31.128775] The buggy address belongs to the object at ffff8801c902b300 [ 31.128775] which belongs to the cache kmalloc-2048 of size 2048 [ 31.128780] The buggy address is located 1376 bytes inside of [ 31.128780] 2048-byte region [ffff8801c902b300, ffff8801c902bb00) [ 31.128781] The buggy address belongs to the page: [ 31.128790] page:ffffea0007240a00 count:1 mapcount:0 mapping: (null) index:0xffff8801c902a200 compound_mapcount: 0 [ 31.128794] flags: 0x4000000000004080(slab|head) [ 31.128796] page dumped because: kasan: bad access detected [ 31.128797] [ 31.128799] Memory state around the buggy address: [ 31.128805] ffff8801c902b700: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 31.128810] ffff8801c902b780: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 31.128815] >ffff8801c902b800: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 31.128817] ^ [ 31.128821] ffff8801c902b880: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 31.128826] ffff8801c902b900: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 31.128828] ================================================================== [ 31.128830] Disabling lock debugging due to kernel taint [ 31.128959] Kernel panic - not syncing: panic_on_warn set ... [ 31.128959] [ 31.128965] CPU: 1 PID: 4162 Comm: blkid Tainted: G B 4.9.141+ #23 [ 31.128975] ffff8801be4d7658 ffffffff81b42e79 ffffffff82e37630 00000000ffffffff [ 31.128984] 0000000000000000 0000000000000001 0000000000000000 ffff8801be4d7718 [ 31.128993] ffffffff813f7125 0000000041b58ab3 ffffffff82e2b62b ffffffff813f6f66 [ 31.128994] Call Trace: [ 31.129002] [] dump_stack+0xc1/0x128 [ 31.129009] [] panic+0x1bf/0x39f [ 31.129016] [] ? add_taint.cold.5+0x16/0x16 [ 31.129024] [] ? ___preempt_schedule+0x16/0x18 [ 31.129031] [] kasan_end_report+0x47/0x4f [ 31.129038] [] kasan_report.cold.6+0x76/0x2fe [ 31.129045] [] ? disk_unblock_events+0x51/0x60 [ 31.129052] [] __asan_report_load8_noabort+0x14/0x20 [ 31.129059] [] disk_unblock_events+0x51/0x60 [ 31.129065] [] __blkdev_get+0x6b6/0xd60 [ 31.129072] [] ? __blkdev_put+0x840/0x840 [ 31.129078] [] ? fsnotify+0x114/0x1100 [ 31.129084] [] blkdev_get+0x2da/0x920 [ 31.129090] [] ? debug_lockdep_rcu_enabled+0x77/0x90 [ 31.129096] [] ? bd_may_claim+0xd0/0xd0 [ 31.129102] [] ? bd_acquire+0x27/0x250 [ 31.129108] [] ? bd_acquire+0x88/0x250 [ 31.129114] [] ? _raw_spin_unlock+0x2c/0x50 [ 31.129120] [] blkdev_open+0x1a5/0x250 [ 31.129127] [] do_dentry_open+0x3ef/0xc90 [ 31.129133] [] ? blkdev_get_by_dev+0x70/0x70 [ 31.129140] [] vfs_open+0x11c/0x210 [ 31.129146] [] ? may_open.isra.20+0x14f/0x2a0 [ 31.129153] [] path_openat+0x542/0x2790 [ 31.129160] [] ? path_mountpoint+0x6c0/0x6c0 [ 31.129166] [] ? trace_hardirqs_on+0x10/0x10 [ 31.129173] [] ? new_slab+0x22e/0x3d0 [ 31.129180] [] ? expand_files.part.3+0x3a9/0x6d0 [ 31.129186] [] do_filp_open+0x197/0x270 [ 31.129193] [] ? may_open_dev+0xe0/0xe0 [ 31.129199] [] ? _raw_spin_unlock+0x2c/0x50 [ 31.129206] [] ? __alloc_fd+0x1d7/0x4a0 [ 31.129213] [] do_sys_open+0x30d/0x5c0 [ 31.129220] [] ? filp_open+0x70/0x70 [ 31.129227] [] ? up_read+0x1a/0x40 [ 31.129234] [] SyS_open+0x2d/0x40 [ 31.129240] [] ? do_sys_open+0x5c0/0x5c0 [ 31.129246] [] do_syscall_64+0x19f/0x550 [ 31.129253] [] entry_SYSCALL_64_after_swapgs+0x5d/0xdb [ 31.131621] Kernel Offset: disabled [ 31.936530] Rebooting in 86400 seconds..