Warning: Permanently added '10.128.0.138' (ECDSA) to the list of known hosts. executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program syzkaller login: [ 48.479681] kauditd_printk_skb: 3 callbacks suppressed [ 48.479695] audit: type=1400 audit(1572045979.704:36): avc: denied { map } for pid=7597 comm="syz-executor204" path="/root/syz-executor204967344" dev="sda1" ino=16484 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:object_r:user_home_t:s0 tclass=file permissive=1 executing program executing program executing program executing program executing program executing program executing program executing program [ 48.547724] audit: type=1400 audit(1572045979.704:37): avc: denied { prog_load } for pid=7604 comm="syz-executor204" scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tclass=bpf permissive=1 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 50.645820] ================================================================== [ 50.653472] BUG: KASAN: use-after-free in bpf_prog_kallsyms_find+0x2a9/0x2c0 [ 50.660952] Read of size 8 at addr ffff8880a5a07180 by task syz-executor204/8448 [ 50.668504] [ 50.670171] CPU: 0 PID: 8448 Comm: syz-executor204 Not tainted 4.19.80 #0 [ 50.677469] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 50.687415] Call Trace: [ 50.690030] dump_stack+0x172/0x1f0 [ 50.693799] ? bpf_prog_kallsyms_find+0x2a9/0x2c0 [ 50.698674] print_address_description.cold+0x7c/0x20d [ 50.704035] ? bpf_prog_kallsyms_find+0x2a9/0x2c0 [ 50.708878] kasan_report.cold+0x8c/0x2ba [ 50.713257] __asan_report_load8_noabort+0x14/0x20 [ 50.718227] bpf_prog_kallsyms_find+0x2a9/0x2c0 [ 50.722904] ? rcu_bh_qs+0x51/0xc0 [ 50.726463] is_bpf_text_address+0x78/0x170 [ 50.731025] kernel_text_address+0x73/0xf0 [ 50.735261] __kernel_text_address+0xd/0x40 [ 50.739802] unwind_get_return_address+0x61/0xa0 [ 50.744565] __save_stack_trace+0x99/0x100 [ 50.749009] save_stack_trace+0x1a/0x20 [ 50.752999] save_stack+0x45/0xd0 [ 50.757348] ? save_stack+0x45/0xd0 [ 50.761095] ? kasan_kmalloc+0xce/0xf0 [ 50.764982] ? kmem_cache_alloc_node_trace+0x153/0x720 [ 50.770697] ? __kmalloc_node+0x3d/0x80 [ 50.774839] ? __vmalloc_node_range+0x1f8/0x790 [ 50.779646] ? vzalloc+0x6b/0x90 [ 50.783210] ? bpf_patch_insn_data+0xfd/0x330 [ 50.787998] ? convert_ctx_accesses+0x986/0x13e0 [ 50.792928] ? bpf_check+0x206d/0x6259 [ 50.796823] ? bpf_prog_load+0xdcf/0x13f0 [ 50.801774] ? __x64_sys_bpf+0x32b/0x4c0 [ 50.808147] ? do_syscall_64+0xfd/0x620 [ 50.815361] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 50.823830] ? mark_held_locks+0x100/0x100 [ 50.828337] ? mark_held_locks+0x100/0x100 [ 50.832610] ? fs_reclaim_acquire+0x20/0x20 [ 50.837110] ? __lock_is_held+0xb6/0x140 [ 50.841519] ? mark_held_locks+0xb1/0x100 [ 50.845776] ? lock_downgrade+0x880/0x880 [ 50.849942] ? kasan_unpoison_shadow+0x35/0x50 [ 50.854606] kasan_kmalloc+0xce/0xf0 [ 50.858402] kmem_cache_alloc_node_trace+0x153/0x720 [ 50.864521] ? kasan_check_read+0x11/0x20 [ 50.868691] ? do_raw_spin_unlock+0x57/0x270 [ 50.873143] __kmalloc_node+0x3d/0x80 [ 50.877168] __vmalloc_node_range+0x1f8/0x790 [ 50.881870] ? bpf_patch_insn_data+0xfd/0x330 [ 50.886369] vzalloc+0x6b/0x90 [ 50.889556] ? bpf_patch_insn_data+0xfd/0x330 [ 50.894769] bpf_patch_insn_data+0xfd/0x330 [ 50.900049] ? tc_cls_act_convert_ctx_access+0x292/0x340 [ 50.905630] convert_ctx_accesses+0x986/0x13e0 [ 50.910319] ? do_check+0x9e00/0x9e00 [ 50.914322] ? cmp_subprogs+0x16/0x90 [ 50.918352] ? bsearch+0xa1/0xc0 [ 50.921833] ? __reg_deduce_bounds+0x190/0x190 [ 50.926603] ? find_subprog+0xbf/0x110 [ 50.930969] ? find_good_pkt_pointers+0x660/0x660 [ 50.935838] ? bpf_check+0x183e/0x6259 [ 50.939732] bpf_check+0x206d/0x6259 [ 50.943448] ? find_held_lock+0x35/0x130 [ 50.947507] ? fixup_bpf_calls+0x1e40/0x1e40 [ 50.952057] ? memset+0x32/0x40 [ 50.955446] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20 [ 50.961325] ? bpf_obj_name_cpy+0x136/0x180 [ 50.965761] bpf_prog_load+0xdcf/0x13f0 [ 50.969742] ? bpf_prog_new_fd+0x60/0x60 [ 50.974005] ? lock_downgrade+0x880/0x880 [ 50.978820] ? selinux_bpf+0xe7/0x130 [ 50.982646] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 50.988868] ? security_bpf+0x8b/0xc0 [ 50.993563] __x64_sys_bpf+0x32b/0x4c0 [ 50.997468] ? bpf_prog_get+0x20/0x20 [ 51.002208] ? do_syscall_64+0x26/0x620 [ 51.006582] ? lockdep_hardirqs_on+0x415/0x5d0 [ 51.011538] ? trace_hardirqs_on+0x67/0x220 [ 51.016152] do_syscall_64+0xfd/0x620 [ 51.020584] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 51.028278] RIP: 0033:0x446949 [ 51.031491] Code: e8 0c e8 ff ff 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 5b 07 fc ff c3 66 2e 0f 1f 84 00 00 00 00 [ 51.064510] RSP: 002b:00007fed49b0edb8 EFLAGS: 00000246 ORIG_RAX: 0000000000000141 [ 51.073474] RAX: ffffffffffffffda RBX: 00000000006dbc28 RCX: 0000000000446949 [ 51.081168] RDX: 0000000000000032 RSI: 0000000020000440 RDI: 0000000000000005 [ 51.090392] RBP: 00000000006dbc20 R08: 0000000000000000 R09: 0000000000000000 [ 51.097843] R10: 0000000000000000 R11: 0000000000000246 R12: 00000000006dbc2c [ 51.105134] R13: 00007ffe1659767f R14: 00007fed49b0f9c0 R15: 000000000000002d [ 51.112680] [ 51.114922] Allocated by task 8444: [ 51.121720] save_stack+0x45/0xd0 [ 51.125394] kasan_kmalloc+0xce/0xf0 [ 51.129117] kmem_cache_alloc_trace+0x152/0x760 [ 51.134223] bpf_prog_alloc+0x216/0x2a0 [ 51.138544] bpf_check+0x3e7f/0x6259 [ 51.142959] bpf_prog_load+0xdcf/0x13f0 [ 51.147153] __x64_sys_bpf+0x32b/0x4c0 [ 51.152017] do_syscall_64+0xfd/0x620 [ 51.155947] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 51.161737] [ 51.163570] Freed by task 14: [ 51.166700] save_stack+0x45/0xd0 [ 51.171821] __kasan_slab_free+0x102/0x150 [ 51.179444] kasan_slab_free+0xe/0x10 [ 51.185348] kfree+0xcf/0x220 [ 51.190078] bpf_jit_free+0xa5/0x300 [ 51.195571] bpf_prog_free_deferred+0x1a6/0x420 [ 51.202792] process_one_work+0x989/0x1750 [ 51.209293] worker_thread+0x98/0xe40 [ 51.213990] kthread+0x354/0x420 [ 51.217815] ret_from_fork+0x24/0x30 [ 51.223358] [ 51.225262] The buggy address belongs to the object at ffff8880a5a07140 [ 51.225262] which belongs to the cache kmalloc-256 of size 256 [ 51.239128] The buggy address is located 64 bytes inside of [ 51.239128] 256-byte region [ffff8880a5a07140, ffff8880a5a07240) [ 51.251820] The buggy address belongs to the page: [ 51.257272] page:ffffea00029681c0 count:1 mapcount:0 mapping:ffff88812c3f07c0 index:0x0 [ 51.265880] flags: 0x1fffc0000000100(slab) [ 51.270437] raw: 01fffc0000000100 ffffea0002923988 ffffea00024c3188 ffff88812c3f07c0 [ 51.278851] raw: 0000000000000000 ffff8880a5a07000 000000010000000c 0000000000000000 [ 51.286843] page dumped because: kasan: bad access detected [ 51.292651] [ 51.294298] Memory state around the buggy address: [ 51.299531] ffff8880a5a07080: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 51.308237] ffff8880a5a07100: fc fc fc fc fc fc fc fc fb fb fb fb fb fb fb fb [ 51.318932] >ffff8880a5a07180: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 51.329902] ^ [ 51.333977] ffff8880a5a07200: fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc [ 51.342278] ffff8880a5a07280: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 51.350302] ================================================================== [ 51.358703] Disabling lock debugging due to kernel taint [ 51.368419] Kernel panic - not syncing: panic_on_warn set ... [ 51.368419] [ 51.376760] CPU: 1 PID: 8448 Comm: syz-executor204 Tainted: G B 4.19.80 #0 [ 51.385309] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 51.396459] Call Trace: [ 51.402033] dump_stack+0x172/0x1f0 [ 51.405791] ? bpf_prog_kallsyms_find+0x2a9/0x2c0 [ 51.412119] panic+0x26a/0x50e [ 51.416284] ? __warn_printk+0xf3/0xf3 [ 51.421307] ? bpf_prog_kallsyms_find+0x2a9/0x2c0 [ 51.428942] ? preempt_schedule+0x4b/0x60 [ 51.433537] ? ___preempt_schedule+0x16/0x18 [ 51.438535] ? trace_hardirqs_on+0x5e/0x220 [ 51.443065] ? bpf_prog_kallsyms_find+0x2a9/0x2c0 [ 51.449651] kasan_end_report+0x47/0x4f [ 51.453666] kasan_report.cold+0xa9/0x2ba [ 51.458139] __asan_report_load8_noabort+0x14/0x20 [ 51.463477] bpf_prog_kallsyms_find+0x2a9/0x2c0 [ 51.468937] ? rcu_bh_qs+0x51/0xc0 [ 51.472483] is_bpf_text_address+0x78/0x170 [ 51.476808] kernel_text_address+0x73/0xf0 [ 51.482361] __kernel_text_address+0xd/0x40 [ 51.486901] unwind_get_return_address+0x61/0xa0 [ 51.491670] __save_stack_trace+0x99/0x100 [ 51.495904] save_stack_trace+0x1a/0x20 [ 51.500678] save_stack+0x45/0xd0 [ 51.504950] ? save_stack+0x45/0xd0 [ 51.508993] ? kasan_kmalloc+0xce/0xf0 [ 51.513863] ? kmem_cache_alloc_node_trace+0x153/0x720 [ 51.519712] ? __kmalloc_node+0x3d/0x80 [ 51.524021] ? __vmalloc_node_range+0x1f8/0x790 [ 51.528941] ? vzalloc+0x6b/0x90 [ 51.533784] ? bpf_patch_insn_data+0xfd/0x330 [ 51.539415] ? convert_ctx_accesses+0x986/0x13e0 [ 51.546519] ? bpf_check+0x206d/0x6259 [ 51.551425] ? bpf_prog_load+0xdcf/0x13f0 [ 51.555933] ? __x64_sys_bpf+0x32b/0x4c0 [ 51.560627] ? do_syscall_64+0xfd/0x620 [ 51.565868] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 51.571921] ? mark_held_locks+0x100/0x100 [ 51.577754] ? mark_held_locks+0x100/0x100 [ 51.583004] ? fs_reclaim_acquire+0x20/0x20 [ 51.588153] ? __lock_is_held+0xb6/0x140 [ 51.592561] ? mark_held_locks+0xb1/0x100 [ 51.597204] ? lock_downgrade+0x880/0x880 [ 51.602457] ? kasan_unpoison_shadow+0x35/0x50 [ 51.608012] kasan_kmalloc+0xce/0xf0 [ 51.611850] kmem_cache_alloc_node_trace+0x153/0x720 [ 51.617694] ? kasan_check_read+0x11/0x20 [ 51.623609] ? do_raw_spin_unlock+0x57/0x270 [ 51.629059] __kmalloc_node+0x3d/0x80 [ 51.632999] __vmalloc_node_range+0x1f8/0x790 [ 51.638056] ? bpf_patch_insn_data+0xfd/0x330 [ 51.643222] vzalloc+0x6b/0x90 [ 51.646598] ? bpf_patch_insn_data+0xfd/0x330 [ 51.651095] bpf_patch_insn_data+0xfd/0x330 [ 51.655642] ? tc_cls_act_convert_ctx_access+0x292/0x340 [ 51.661216] convert_ctx_accesses+0x986/0x13e0 [ 51.665804] ? do_check+0x9e00/0x9e00 [ 51.669783] ? cmp_subprogs+0x16/0x90 [ 51.673585] ? bsearch+0xa1/0xc0 [ 51.677140] ? __reg_deduce_bounds+0x190/0x190 [ 51.682074] ? find_subprog+0xbf/0x110 [ 51.686240] ? find_good_pkt_pointers+0x660/0x660 [ 51.691544] ? bpf_check+0x183e/0x6259 [ 51.695455] bpf_check+0x206d/0x6259 [ 51.699334] ? find_held_lock+0x35/0x130 [ 51.703406] ? fixup_bpf_calls+0x1e40/0x1e40 [ 51.708383] ? memset+0x32/0x40 [ 51.711932] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20 [ 51.717562] ? bpf_obj_name_cpy+0x136/0x180 [ 51.721898] bpf_prog_load+0xdcf/0x13f0 [ 51.726089] ? bpf_prog_new_fd+0x60/0x60 [ 51.730161] ? lock_downgrade+0x880/0x880 [ 51.734418] ? selinux_bpf+0xe7/0x130 [ 51.738337] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 51.744298] ? security_bpf+0x8b/0xc0 [ 51.748443] __x64_sys_bpf+0x32b/0x4c0 [ 51.752724] ? bpf_prog_get+0x20/0x20 [ 51.756732] ? do_syscall_64+0x26/0x620 [ 51.760993] ? lockdep_hardirqs_on+0x415/0x5d0 [ 51.766581] ? trace_hardirqs_on+0x67/0x220 [ 51.772186] do_syscall_64+0xfd/0x620 [ 51.776775] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 51.782073] RIP: 0033:0x446949 [ 51.785517] Code: e8 0c e8 ff ff 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 5b 07 fc ff c3 66 2e 0f 1f 84 00 00 00 00 [ 51.805624] RSP: 002b:00007fed49b0edb8 EFLAGS: 00000246 ORIG_RAX: 0000000000000141 [ 51.814727] RAX: ffffffffffffffda RBX: 00000000006dbc28 RCX: 0000000000446949 [ 51.822311] RDX: 0000000000000032 RSI: 0000000020000440 RDI: 0000000000000005 [ 51.829832] RBP: 00000000006dbc20 R08: 0000000000000000 R09: 0000000000000000 [ 51.837209] R10: 0000000000000000 R11: 0000000000000246 R12: 00000000006dbc2c [ 51.845512] R13: 00007ffe1659767f R14: 00007fed49b0f9c0 R15: 000000000000002d [ 51.854190] Kernel Offset: disabled [ 51.857835] Rebooting in 86400 seconds..