Warning: Permanently added '10.128.0.222' (ECDSA) to the list of known hosts. 2020/11/22 06:39:42 fuzzer started 2020/11/22 06:39:42 dialing manager at 10.128.0.105:33021 2020/11/22 06:39:42 syscalls: 3448 2020/11/22 06:39:42 code coverage: enabled 2020/11/22 06:39:42 comparison tracing: enabled 2020/11/22 06:39:42 extra coverage: enabled 2020/11/22 06:39:42 setuid sandbox: enabled 2020/11/22 06:39:42 namespace sandbox: enabled 2020/11/22 06:39:42 Android sandbox: /sys/fs/selinux/policy does not exist 2020/11/22 06:39:42 fault injection: enabled 2020/11/22 06:39:42 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled 2020/11/22 06:39:42 net packet injection: enabled 2020/11/22 06:39:42 net device setup: enabled 2020/11/22 06:39:42 concurrency sanitizer: enabled 2020/11/22 06:39:42 devlink PCI setup: PCI device 0000:00:10.0 is not available 2020/11/22 06:39:42 USB emulation: enabled 2020/11/22 06:39:42 hci packet injection: enabled 2020/11/22 06:39:42 wifi device emulation: enabled 2020/11/22 06:39:46 suppressing KCSAN reports in functions: '__writeback_single_inode' 'snd_rawmidi_kernel_write1' 'do_nanosleep' '__mod_timer' '_prb_read_valid' 'expire_timers' '__find_get_block' 'generic_write_end' 'wbt_done' '__add_to_page_cache_locked' 'kauditd_thread' 'n_tty_receive_buf_common' 'do_select' 'pcpu_alloc' '__save_error_info' 'blk_mq_dispatch_rq_list' 'shmem_add_to_page_cache' 'blk_mq_sched_dispatch_requests' 'futex_wait_queue_me' '__delayacct_blkio_end' '__fsnotify_parent' '__ext4_new_inode' 'ext4_free_inodes_count' 'exit_mm' 'ext4_setattr' 'xas_find_marked' 'blk_mq_rq_ctx_init' '__io_cqring_fill_event' 'snd_rawmidi_poll' 'wb_timer_fn' 'ext4_mb_regular_allocator' 'step_into' 'lookup_fast' '__xa_clear_mark' 'ext4_mark_iloc_dirty' '__delete_from_page_cache' 'alloc_pid' '__mark_inode_dirty' '__process_echoes' 'io_sq_thread' 'find_get_pages_range_tag' 'ext4_writepages' 'ext4_mb_good_group' 'audit_log_start' 'generic_file_buffered_read' 'ext4_free_inode' 'wbt_wait' '__filemap_fdatawrite_range' 'do_sys_poll' 'ondemand_readahead' 'dd_has_work' 06:41:12 executing program 0: clone(0x80020000, 0x0, 0x0, 0x0, 0x0) syzkaller login: [ 120.969728][ T8439] ================================================================== [ 120.977838][ T8439] BUG: KCSAN: data-race in atime_needs_update / propagate_one [ 120.985270][ T8439] [ 120.987579][ T8439] read-write to 0xffff888141d175f0 of 4 bytes by task 8462 on cpu 0: [ 120.995612][ T8439] propagate_one+0x323/0x3f0 [ 121.000193][ T8439] propagate_mnt+0x2f8/0x650 [ 121.005382][ T8439] attach_recursive_mnt+0x4fb/0x1180 [ 121.010638][ T8439] path_mount+0x1aed/0x1c10 [ 121.015119][ T8439] __se_sys_mount+0x23d/0x2e0 [ 121.019782][ T8439] __x64_sys_mount+0x63/0x70 [ 121.024344][ T8439] do_syscall_64+0x39/0x80 [ 121.028740][ T8439] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 121.034597][ T8439] [ 121.037084][ T8439] read to 0xffff888141d175f0 of 4 bytes by task 8439 on cpu 1: [ 121.044611][ T8439] atime_needs_update+0x133/0x370 [ 121.049616][ T8439] touch_atime+0x55/0x2d0 [ 121.056454][ T8439] generic_file_buffered_read+0x1b30/0x23a0 [ 121.063101][ T8439] generic_file_read_iter+0x80/0x3d0 [ 121.068359][ T8439] ext4_file_read_iter+0x2d0/0x420 [ 121.073449][ T8439] __kernel_read+0x307/0x560 [ 121.078008][ T8439] integrity_kernel_read+0x4c/0x70 [ 121.083099][ T8439] ima_calc_file_hash+0x9c7/0x1430 [ 121.088179][ T8439] ima_collect_measurement+0x168/0x300 [ 121.093606][ T8439] process_measurement+0x9f1/0x1050 [ 121.101985][ T8439] ima_file_check+0x72/0xa0 [ 121.106458][ T8439] path_openat+0x1887/0x20a0 [ 121.111031][ T8439] do_filp_open+0xbd/0x1d0 [ 121.115437][ T8439] do_sys_openat2+0xa3/0x240 [ 121.119998][ T8439] __x64_sys_openat+0xef/0x110 [ 121.124737][ T8439] do_syscall_64+0x39/0x80 [ 121.129137][ T8439] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 121.135099][ T8439] [ 121.137399][ T8439] Reported by Kernel Concurrency Sanitizer on: [ 121.144336][ T8439] CPU: 1 PID: 8439 Comm: syz-fuzzer Not tainted 5.10.0-rc4-syzkaller #0 [ 121.152628][ T8439] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 121.162705][ T8439] ================================================================== [ 121.171563][ T8439] Kernel panic - not syncing: panic_on_warn set ... [ 121.178227][ T8439] CPU: 1 PID: 8439 Comm: syz-fuzzer Not tainted 5.10.0-rc4-syzkaller #0 [ 121.187189][ T8439] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 121.203851][ T8439] Call Trace: [ 121.207564][ T8439] dump_stack+0x116/0x15d [ 121.212143][ T8439] panic+0x1e7/0x5fa [ 121.220315][ T8439] ? vprintk_emit+0x2f2/0x370 [ 121.228650][ T8439] kcsan_report+0x67b/0x680 [ 121.233236][ T8439] ? kcsan_setup_watchpoint+0x46a/0x4d0 [ 121.244893][ T8439] ? atime_needs_update+0x133/0x370 [ 121.254841][ T8439] ? touch_atime+0x55/0x2d0 [ 121.259340][ T8439] ? generic_file_buffered_read+0x1b30/0x23a0 [ 121.265381][ T8439] ? generic_file_read_iter+0x80/0x3d0 [ 121.270836][ T8439] ? ext4_file_read_iter+0x2d0/0x420 [ 121.276352][ T8439] ? __kernel_read+0x307/0x560 [ 121.281087][ T8439] ? integrity_kernel_read+0x4c/0x70 [ 121.287334][ T8439] ? ima_calc_file_hash+0x9c7/0x1430 [ 121.295045][ T8439] ? ima_collect_measurement+0x168/0x300 [ 121.300649][ T8439] ? process_measurement+0x9f1/0x1050 [ 121.305992][ T8439] ? ima_file_check+0x72/0xa0 [ 121.310648][ T8439] ? path_openat+0x1887/0x20a0 [ 121.315387][ T8439] ? do_filp_open+0xbd/0x1d0 [ 121.320056][ T8439] ? do_sys_openat2+0xa3/0x240 [ 121.324797][ T8439] ? __x64_sys_openat+0xef/0x110 [ 121.329718][ T8439] ? do_syscall_64+0x39/0x80 [ 121.334281][ T8439] ? entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 121.340328][ T8439] kcsan_setup_watchpoint+0x46a/0x4d0 [ 121.345685][ T8439] ? __check_object_size+0x253/0x310 [ 121.350959][ T8439] atime_needs_update+0x133/0x370 [ 121.355954][ T8439] touch_atime+0x55/0x2d0 [ 121.360254][ T8439] ? mark_page_accessed+0x529/0x5e0 [ 121.365596][ T8439] generic_file_buffered_read+0x1b30/0x23a0 [ 121.371462][ T8439] generic_file_read_iter+0x80/0x3d0 [ 121.376720][ T8439] ext4_file_read_iter+0x2d0/0x420 [ 121.381819][ T8439] __kernel_read+0x307/0x560 [ 121.386407][ T8439] integrity_kernel_read+0x4c/0x70 [ 121.391513][ T8439] ima_calc_file_hash+0x9c7/0x1430 [ 121.399204][ T8439] ? __switch_to+0x14e/0x4c0 [ 121.403766][ T8439] ? __switch_to+0x14e/0x4c0 [ 121.408337][ T8439] ? __schedule+0x39b/0x550 [ 121.412809][ T8439] ? widen_string+0x3a/0x280 [ 121.417368][ T8439] ? format_decode+0x1d3/0x840 [ 121.422109][ T8439] ? string+0x1f9/0x210 [ 121.426246][ T8439] ? __rcu_read_unlock+0x3a/0x220 [ 121.431243][ T8439] ? ext4_xattr_ibody_get+0x68/0x630 [ 121.436931][ T8439] ? aa_get_newest_label+0x74/0x250 [ 121.442099][ T8439] ? apparmor_capable+0xfe/0x160 [ 121.447017][ T8439] ? __rcu_read_unlock+0x3a/0x220 [ 121.452018][ T8439] ? ext4_xattr_get+0x27d/0x580 [ 121.456839][ T8439] ? ima_match_policy+0xa54/0xa90 [ 121.461833][ T8439] ima_collect_measurement+0x168/0x300 [ 121.467263][ T8439] process_measurement+0x9f1/0x1050 [ 121.472433][ T8439] ? dquot_file_open+0x68/0x80 [ 121.477168][ T8439] ? ext4_file_open+0x186/0x4f0 [ 121.481997][ T8439] ? aa_get_newest_label+0x74/0x250 [ 121.487163][ T8439] ? __rcu_read_unlock+0x51/0x220 [ 121.492157][ T8439] ? fsnotify_perm+0x296/0x2d0 [ 121.496891][ T8439] ? aa_get_task_label+0x72/0xc0 [ 121.501799][ T8439] ? apparmor_task_getsecid+0x81/0xa0 [ 121.507140][ T8439] ima_file_check+0x72/0xa0 [ 121.511614][ T8439] path_openat+0x1887/0x20a0 [ 121.516173][ T8439] ? __ext4_mark_inode_dirty+0x46a/0x610 [ 121.521795][ T8439] do_filp_open+0xbd/0x1d0 [ 121.526197][ T8439] ? _raw_spin_unlock+0x22/0x40 [ 121.531278][ T8439] ? __alloc_fd+0x33c/0x390 [ 121.535752][ T8439] do_sys_openat2+0xa3/0x240 [ 121.540324][ T8439] ? mem_cgroup_handle_over_high+0x34/0x4d0 [ 121.546187][ T8439] __x64_sys_openat+0xef/0x110 [ 121.550922][ T8439] do_syscall_64+0x39/0x80 [ 121.555307][ T8439] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 121.561169][ T8439] RIP: 0033:0x4b3d4a [ 121.565035][ T8439] Code: e8 5b a1 f8 ff 48 8b 7c 24 10 48 8b 74 24 18 48 8b 54 24 20 4c 8b 54 24 28 4c 8b 44 24 30 4c 8b 4c 24 38 48 8b 44 24 08 0f 05 <48> 3d 01 f0 ff ff 76 20 48 c7 44 24 40 ff ff ff ff 48 c7 44 24 48 [ 121.584611][ T8439] RSP: 002b:000000c028785808 EFLAGS: 00000216 ORIG_RAX: 0000000000000101 [ 121.598986][ T8439] RAX: ffffffffffffffda RBX: 000000c00002e800 RCX: 00000000004b3d4a [ 121.606931][ T8439] RDX: 0000000000080002 RSI: 000000c02579c440 RDI: ffffffffffffff9c [ 121.614874][ T8439] RBP: 000000c028785880 R08: 0000000000000000 R09: 0000000000000000 [ 121.622821][ T8439] R10: 00000000000001a4 R11: 0000000000000216 R12: ffffffffffffffff [ 121.630778][ T8439] R13: 0000000000000023 R14: 0000000000000022 R15: 0000000000000100 [ 121.640244][ T8439] Kernel Offset: disabled [ 121.644557][ T8439] Rebooting in 86400 seconds..