Warning: Permanently added '10.128.15.197' (ECDSA) to the list of known hosts. 2020/11/18 02:58:58 fuzzer started 2020/11/18 02:58:59 dialing manager at 10.128.0.105:32841 2020/11/18 02:58:59 syscalls: 3448 2020/11/18 02:58:59 code coverage: enabled 2020/11/18 02:58:59 comparison tracing: enabled 2020/11/18 02:58:59 extra coverage: enabled 2020/11/18 02:58:59 setuid sandbox: enabled 2020/11/18 02:58:59 namespace sandbox: enabled 2020/11/18 02:58:59 Android sandbox: /sys/fs/selinux/policy does not exist 2020/11/18 02:58:59 fault injection: enabled 2020/11/18 02:58:59 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled 2020/11/18 02:58:59 net packet injection: enabled 2020/11/18 02:58:59 net device setup: enabled 2020/11/18 02:58:59 concurrency sanitizer: enabled 2020/11/18 02:58:59 devlink PCI setup: PCI device 0000:00:10.0 is not available 2020/11/18 02:58:59 USB emulation: enabled 2020/11/18 02:58:59 hci packet injection: enabled 2020/11/18 02:58:59 wifi device emulation: enabled 2020/11/18 02:59:05 suppressing KCSAN reports in functions: 'do_select' '__writeback_single_inode' '_prb_read_valid' 'tick_nohz_next_event' 'n_tty_receive_buf_common' 'ext4_sync_file' 'tomoyo_supervisor' '__send_signal' 'ext4_mb_good_group' 'lbmIODone' '__xa_clear_mark' 'alloc_pid' 'kauditd_thread' 'wg_packet_decrypt_worker' 'do_signal_stop' 'filemap_map_pages' 'generic_file_buffered_read' 'ext4_ext_insert_extent' '__delayacct_blkio_end' 'exit_signals' '__fsnotify_parent' 'generic_write_end' 'blk_mq_sched_dispatch_requests' 'find_get_pages_range_tag' 'ext4_free_inodes_count' 'shmem_mknod' 'xas_clear_mark' 'ext4_mb_regular_allocator' '__add_to_page_cache_locked' 'tcp_disconnect' '__io_cqring_fill_event' 'dd_has_work' 'wbt_issue' 'pcpu_alloc' '__mark_inode_dirty' 'blk_mq_rq_ctx_init' 'snd_rawmidi_kernel_write1' 'blk_mq_dispatch_rq_list' 'n_tty_receive_char_inline' 'step_into' 'internal_add_timer' 'dput' 'ext4_mb_find_by_goal' 'complete_signal' 'ext4_mark_iloc_dirty' '__mod_timer' 'audit_log_start' 'ext4_free_inode' 'futex_wait_queue_me' 'exit_mm' '__xa_set_mark' 'snd_rawmidi_transmit' '__ext4_new_inode' 'do_nanosleep' 'expire_timers' 'ext4_writepages' 'do_sys_poll' '__filemap_fdatawrite_range' 'snd_rawmidi_poll' 'lru_add_drain_all' 'io_sq_thread' 03:00:39 executing program 0: r0 = socket$nl_generic(0x10, 0x3, 0x10) sendmsg$NBD_CMD_CONNECT(r0, &(0x7f0000000100)={0x0, 0x0, &(0x7f00000000c0)={0x0, 0x2c}, 0x300}, 0x0) syzkaller login: [ 127.633964][ T8439] ================================================================== [ 127.642126][ T8439] BUG: KCSAN: data-race in atime_needs_update / propagate_one [ 127.649571][ T8439] [ 127.651875][ T8439] read-write to 0xffff8881012ef670 of 4 bytes by task 8459 on cpu 1: [ 127.660019][ T8439] propagate_one+0x323/0x3f0 [ 127.664584][ T8439] propagate_mnt+0x2f8/0x650 [ 127.669158][ T8439] attach_recursive_mnt+0x4fb/0x1180 [ 127.674452][ T8439] path_mount+0x1aed/0x1c10 [ 127.678933][ T8439] __se_sys_mount+0x23d/0x2e0 [ 127.683581][ T8439] __x64_sys_mount+0x63/0x70 [ 127.688156][ T8439] do_syscall_64+0x39/0x80 [ 127.693670][ T8439] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 127.699549][ T8439] [ 127.701864][ T8439] read to 0xffff8881012ef670 of 4 bytes by task 8439 on cpu 0: [ 127.709467][ T8439] atime_needs_update+0x133/0x370 [ 127.714722][ T8439] touch_atime+0x55/0x2d0 [ 127.719033][ T8439] generic_file_buffered_read+0x1a1c/0x2110 [ 127.724893][ T8439] generic_file_read_iter+0x80/0x3d0 [ 127.730147][ T8439] ext4_file_read_iter+0x2d0/0x420 [ 127.735224][ T8439] __kernel_read+0x307/0x560 [ 127.739784][ T8439] integrity_kernel_read+0x4c/0x70 [ 127.744865][ T8439] ima_calc_file_hash+0x9c7/0x1430 [ 127.749946][ T8439] ima_collect_measurement+0x168/0x300 [ 127.755373][ T8439] process_measurement+0x9f1/0x1050 [ 127.760550][ T8439] ima_file_check+0x72/0xa0 [ 127.765023][ T8439] path_openat+0x1887/0x20a0 [ 127.769580][ T8439] do_filp_open+0xbd/0x1d0 [ 127.773978][ T8439] do_sys_openat2+0xa3/0x240 [ 127.778549][ T8439] __x64_sys_openat+0xef/0x110 [ 127.783283][ T8439] do_syscall_64+0x39/0x80 [ 127.787676][ T8439] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 127.793553][ T8439] [ 127.795852][ T8439] Reported by Kernel Concurrency Sanitizer on: [ 127.801985][ T8439] CPU: 0 PID: 8439 Comm: syz-fuzzer Not tainted 5.10.0-rc4-syzkaller #0 [ 127.810284][ T8439] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 127.820312][ T8439] ================================================================== [ 127.828345][ T8439] Kernel panic - not syncing: panic_on_warn set ... [ 127.834904][ T8439] CPU: 0 PID: 8439 Comm: syz-fuzzer Not tainted 5.10.0-rc4-syzkaller #0 [ 127.843559][ T8439] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 127.853600][ T8439] Call Trace: [ 127.856864][ T8439] dump_stack+0x116/0x15d [ 127.861163][ T8439] panic+0x1e7/0x5fa [ 127.865029][ T8439] ? vprintk_emit+0x2f2/0x370 [ 127.869675][ T8439] kcsan_report+0x67b/0x680 [ 127.874248][ T8439] ? kcsan_setup_watchpoint+0x46a/0x4d0 [ 127.879764][ T8439] ? atime_needs_update+0x133/0x370 [ 127.884945][ T8439] ? touch_atime+0x55/0x2d0 [ 127.889432][ T8439] ? generic_file_buffered_read+0x1a1c/0x2110 [ 127.895468][ T8439] ? generic_file_read_iter+0x80/0x3d0 [ 127.900895][ T8439] ? ext4_file_read_iter+0x2d0/0x420 [ 127.906149][ T8439] ? __kernel_read+0x307/0x560 [ 127.910882][ T8439] ? integrity_kernel_read+0x4c/0x70 [ 127.916148][ T8439] ? ima_calc_file_hash+0x9c7/0x1430 [ 127.921402][ T8439] ? ima_collect_measurement+0x168/0x300 [ 127.927004][ T8439] ? process_measurement+0x9f1/0x1050 [ 127.932344][ T8439] ? ima_file_check+0x72/0xa0 [ 127.937539][ T8439] ? path_openat+0x1887/0x20a0 [ 127.942374][ T8439] ? do_filp_open+0xbd/0x1d0 [ 127.946934][ T8439] ? do_sys_openat2+0xa3/0x240 [ 127.951669][ T8439] ? __x64_sys_openat+0xef/0x110 [ 127.956577][ T8439] ? do_syscall_64+0x39/0x80 [ 127.961136][ T8439] ? entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 127.967188][ T8439] ? prandom_u32_state+0x9/0x80 [ 127.972011][ T8439] kcsan_setup_watchpoint+0x46a/0x4d0 [ 127.977376][ T8439] ? __check_object_size+0x253/0x310 [ 127.982629][ T8439] atime_needs_update+0x133/0x370 [ 127.987680][ T8439] touch_atime+0x55/0x2d0 [ 127.991979][ T8439] ? mark_page_accessed+0x529/0x5e0 [ 127.997156][ T8439] generic_file_buffered_read+0x1a1c/0x2110 [ 128.003122][ T8439] generic_file_read_iter+0x80/0x3d0 [ 128.008378][ T8439] ext4_file_read_iter+0x2d0/0x420 [ 128.013461][ T8439] __kernel_read+0x307/0x560 [ 128.018032][ T8439] integrity_kernel_read+0x4c/0x70 [ 128.023141][ T8439] ima_calc_file_hash+0x9c7/0x1430 [ 128.028226][ T8439] ? __should_failslab+0x81/0x90 [ 128.033135][ T8439] ? integrity_audit_message+0x7b/0x280 [ 128.038660][ T8439] ? should_failslab+0x5/0x20 [ 128.043307][ T8439] ? slab_pre_alloc_hook+0x20/0xb0 [ 128.048389][ T8439] ? widen_string+0x3a/0x280 [ 128.052960][ T8439] ? format_decode+0x1d3/0x840 [ 128.057692][ T8439] ? string+0x1f9/0x210 [ 128.061823][ T8439] ? __rcu_read_unlock+0x3a/0x220 [ 128.066817][ T8439] ? ext4_xattr_ibody_get+0x68/0x630 [ 128.072071][ T8439] ? aa_get_newest_label+0x74/0x250 [ 128.077260][ T8439] ? apparmor_capable+0xfe/0x160 [ 128.082173][ T8439] ? __rcu_read_unlock+0x3a/0x220 [ 128.087185][ T8439] ? ext4_xattr_get+0x27d/0x580 [ 128.092005][ T8439] ? ima_match_policy+0xa54/0xa90 [ 128.097010][ T8439] ima_collect_measurement+0x168/0x300 [ 128.102446][ T8439] process_measurement+0x9f1/0x1050 [ 128.107614][ T8439] ? dquot_file_open+0x68/0x80 [ 128.112360][ T8439] ? ext4_file_open+0x186/0x4f0 [ 128.117180][ T8439] ? aa_get_newest_label+0x74/0x250 [ 128.122520][ T8439] ? __rcu_read_unlock+0x51/0x220 [ 128.127513][ T8439] ? fsnotify_perm+0x296/0x2d0 [ 128.132245][ T8439] ? aa_get_task_label+0x72/0xc0 [ 128.137163][ T8439] ? apparmor_task_getsecid+0x81/0xa0 [ 128.142506][ T8439] ima_file_check+0x72/0xa0 [ 128.146992][ T8439] path_openat+0x1887/0x20a0 [ 128.151554][ T8439] ? __ext4_mark_inode_dirty+0x46a/0x610 [ 128.157157][ T8439] do_filp_open+0xbd/0x1d0 [ 128.161544][ T8439] ? _raw_spin_unlock+0x22/0x40 [ 128.166366][ T8439] ? __alloc_fd+0x33c/0x390 [ 128.170840][ T8439] do_sys_openat2+0xa3/0x240 [ 128.175402][ T8439] ? mem_cgroup_handle_over_high+0x34/0x4d0 [ 128.181265][ T8439] __x64_sys_openat+0xef/0x110 [ 128.186003][ T8439] do_syscall_64+0x39/0x80 [ 128.190391][ T8439] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 128.196252][ T8439] RIP: 0033:0x4b3d4a [ 128.200127][ 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 [ 128.219713][ T8439] RSP: 002b:000000c0252d7808 EFLAGS: 00000216 ORIG_RAX: 0000000000000101 [ 128.228098][ T8439] RAX: ffffffffffffffda RBX: 000000c00002e800 RCX: 00000000004b3d4a [ 128.236058][ T8439] RDX: 0000000000080002 RSI: 000000c0262d2480 RDI: ffffffffffffff9c [ 128.244000][ T8439] RBP: 000000c0252d7880 R08: 0000000000000000 R09: 0000000000000000 [ 128.251956][ T8439] R10: 00000000000001a4 R11: 0000000000000216 R12: ffffffffffffffff [ 128.259912][ T8439] R13: 0000000000000025 R14: 0000000000000024 R15: 0000000000000100 [ 128.268659][ T8439] Kernel Offset: disabled [ 128.272979][ T8439] Rebooting in 86400 seconds..