Warning: Permanently added '10.128.1.11' (ECDSA) to the list of known hosts. 2021/03/07 09:26:53 fuzzer started 2021/03/07 09:26:53 dialing manager at 10.128.0.163:37407 2021/03/07 09:26:53 syscalls: 3540 2021/03/07 09:26:53 code coverage: enabled 2021/03/07 09:26:53 comparison tracing: enabled 2021/03/07 09:26:53 extra coverage: enabled 2021/03/07 09:26:53 setuid sandbox: enabled 2021/03/07 09:26:53 namespace sandbox: enabled 2021/03/07 09:26:53 Android sandbox: /sys/fs/selinux/policy does not exist 2021/03/07 09:26:53 fault injection: enabled 2021/03/07 09:26:53 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled 2021/03/07 09:26:53 net packet injection: enabled 2021/03/07 09:26:53 net device setup: enabled 2021/03/07 09:26:53 concurrency sanitizer: enabled 2021/03/07 09:26:53 devlink PCI setup: PCI device 0000:00:10.0 is not available 2021/03/07 09:26:53 USB emulation: enabled 2021/03/07 09:26:53 hci packet injection: enabled 2021/03/07 09:26:53 wifi device emulation: enabled 2021/03/07 09:26:53 802.15.4 emulation: enabled 2021/03/07 09:26:55 suppressing KCSAN reports in functions: 'alloc_pid' 'xas_clear_mark' 'ext4_writepages' 'wbt_done' 'shmem_unlink' '_prb_read_valid' 'prandom_seed' 'ext4_fc_commit' 'pcpu_alloc' 'lookup_fast' 'n_tty_receive_buf_common' 'start_this_handle' '__send_signal' 'caching_thread' 'do_nanosleep' 'blk_mq_sched_dispatch_requests' 'exit_mm' '__xa_clear_mark' 'isolate_migratepages_block' '__jbd2_journal_file_buffer' 'generic_write_end' 'kauditd_thread' 'futex_wait_queue_me' 'ext4_mark_iloc_dirty' 'blk_mq_rq_ctx_init' 'jbd2_journal_commit_transaction' 'ext4_free_inodes_count' 2021/03/07 09:26:55 fetching corpus: 0, signal 0/2000 (executing program) 2021/03/07 09:26:55 fetching corpus: 50, signal 19755/23360 (executing program) 2021/03/07 09:26:55 fetching corpus: 100, signal 32269/37306 (executing program) 2021/03/07 09:26:55 fetching corpus: 150, signal 38371/44849 (executing program) 2021/03/07 09:26:55 fetching corpus: 200, signal 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2021/03/07 09:27:03 fetching corpus: 5599, signal 196590/201166 (executing program) 2021/03/07 09:27:03 fetching corpus: 5649, signal 197103/201191 (executing program) 2021/03/07 09:27:03 fetching corpus: 5699, signal 197481/201193 (executing program) 2021/03/07 09:27:03 fetching corpus: 5701, signal 197487/201193 (executing program) 2021/03/07 09:27:03 fetching corpus: 5701, signal 197487/201193 (executing program) 2021/03/07 09:27:04 starting 6 fuzzer processes 09:27:05 executing program 0: mkdir(&(0x7f0000000240)='./file1\x00', 0x0) mkdir(&(0x7f0000000180)='./bus\x00', 0x0) mkdir(&(0x7f0000000280)='./file0\x00', 0x0) mount$overlay(0x400000, &(0x7f0000000000)='./bus\x00', &(0x7f0000000080)='overlay\x00', 0x0, &(0x7f0000000100)=ANY=[@ANYBLOB='lowerdir=./bus,workdir=./file1,upperdir=./file0']) removexattr(&(0x7f0000000200)='./bus\x00', &(0x7f0000000340)=@known='trusted.overlay.nlink\x00') [ 41.720028][ T8364] ================================================================== [ 41.728130][ T8364] BUG: KCSAN: data-race in atime_needs_update / propagate_one [ 41.735699][ T8364] [ 41.738013][ T8364] write to 0xffff88810266a030 of 4 bytes by task 8383 on cpu 0: [ 41.746691][ T8364] propagate_one+0x32d/0x400 [ 41.751261][ T8364] propagate_mnt+0x2f8/0x640 [ 41.755828][ T8364] attach_recursive_mnt+0x4fb/0x11c0 [ 41.761101][ T8364] path_mount+0x1acf/0x1c00 [ 41.765580][ T8364] __se_sys_mount+0x23d/0x2e0 [ 41.770242][ T8364] __x64_sys_mount+0x63/0x70 [ 41.774894][ T8364] do_syscall_64+0x39/0x80 [ 41.779288][ T8364] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 41.785158][ T8364] [ 41.787478][ T8364] read to 0xffff88810266a030 of 4 bytes by task 8364 on cpu 1: [ 41.795006][ T8364] atime_needs_update+0x1e1/0x390 [ 41.800008][ T8364] touch_atime+0x55/0x2d0 [ 41.804318][ T8364] filemap_read+0x74f/0x7b0 [ 41.808896][ T8364] generic_file_read_iter+0x82/0x410 [ 41.814168][ T8364] ext4_file_read_iter+0x2e0/0x420 [ 41.819344][ T8364] __kernel_read+0x306/0x580 [ 41.823915][ T8364] integrity_kernel_read+0x4c/0x70 [ 41.829014][ T8364] ima_calc_file_hash+0x929/0x1310 [ 41.834101][ T8364] ima_collect_measurement+0x168/0x310 [ 41.839558][ T8364] process_measurement+0xa88/0x10f0 [ 41.844732][ T8364] ima_file_check+0x75/0xa0 [ 41.849222][ T8364] path_openat+0x19c5/0x21b0 [ 41.853964][ T8364] do_filp_open+0xbd/0x1d0 [ 41.858355][ T8364] do_sys_openat2+0xa3/0x250 [ 41.862981][ T8364] __x64_sys_openat+0xef/0x110 [ 41.867731][ T8364] do_syscall_64+0x39/0x80 [ 41.872142][ T8364] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 41.878027][ T8364] [ 41.880329][ T8364] Reported by Kernel Concurrency Sanitizer on: [ 41.886455][ T8364] CPU: 1 PID: 8364 Comm: syz-fuzzer Not tainted 5.12.0-rc2-syzkaller #0 [ 41.894793][ T8364] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 41.904840][ T8364] ================================================================== [ 41.912887][ T8364] Kernel panic - not syncing: panic_on_warn set ... [ 41.919445][ T8364] CPU: 1 PID: 8364 Comm: syz-fuzzer Not tainted 5.12.0-rc2-syzkaller #0 [ 41.927770][ T8364] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 41.937820][ T8364] Call Trace: [ 41.941095][ T8364] dump_stack+0x137/0x19d [ 41.945415][ T8364] panic+0x1e7/0x5fa [ 41.949292][ T8364] ? vprintk_emit+0x2fa/0x3e0 [ 41.953985][ T8364] kcsan_report+0x67b/0x680 [ 41.958518][ T8364] ? kcsan_setup_watchpoint+0x40b/0x470 [ 41.964052][ T8364] ? atime_needs_update+0x1e1/0x390 [ 41.969228][ T8364] ? touch_atime+0x55/0x2d0 [ 41.973718][ T8364] ? filemap_read+0x74f/0x7b0 [ 41.978375][ T8364] ? generic_file_read_iter+0x82/0x410 [ 41.983826][ T8364] ? ext4_file_read_iter+0x2e0/0x420 [ 41.989103][ T8364] ? __kernel_read+0x306/0x580 [ 41.993864][ T8364] ? integrity_kernel_read+0x4c/0x70 [ 41.999128][ T8364] ? ima_calc_file_hash+0x929/0x1310 [ 42.004391][ T8364] ? ima_collect_measurement+0x168/0x310 [ 42.010019][ T8364] ? process_measurement+0xa88/0x10f0 [ 42.015383][ T8364] ? ima_file_check+0x75/0xa0 [ 42.020039][ T8364] ? path_openat+0x19c5/0x21b0 [ 42.024777][ T8364] ? do_filp_open+0xbd/0x1d0 [ 42.029518][ T8364] ? do_sys_openat2+0xa3/0x250 [ 42.034367][ T8364] ? __x64_sys_openat+0xef/0x110 [ 42.039393][ T8364] ? do_syscall_64+0x39/0x80 [ 42.043963][ T8364] ? entry_SYSCALL_64_after_hwframe+0x44/0xae [ 42.050028][ T8364] kcsan_setup_watchpoint+0x40b/0x470 [ 42.055469][ T8364] atime_needs_update+0x1e1/0x390 [ 42.060492][ T8364] touch_atime+0x55/0x2d0 [ 42.064813][ T8364] ? mark_page_accessed+0x52f/0x5f0 [ 42.069986][ T8364] filemap_read+0x74f/0x7b0 [ 42.074474][ T8364] generic_file_read_iter+0x82/0x410 [ 42.079762][ T8364] ext4_file_read_iter+0x2e0/0x420 [ 42.084965][ T8364] __kernel_read+0x306/0x580 [ 42.089539][ T8364] integrity_kernel_read+0x4c/0x70 [ 42.094667][ T8364] ima_calc_file_hash+0x929/0x1310 [ 42.099763][ T8364] ? copy_fpregs_to_fpstate+0xd8/0x110 [ 42.105219][ T8364] ? _raw_spin_unlock_irq+0x22/0x40 [ 42.110409][ T8364] ? __schedule+0x3c1/0x580 [ 42.114908][ T8364] ? widen_string+0x3a/0x280 [ 42.119487][ T8364] ? __rcu_read_unlock+0x45/0x250 [ 42.124501][ T8364] ? __down_read_common+0x14e/0x510 [ 42.129677][ T8364] ? aa_get_newest_label+0x74/0x250 [ 42.134853][ T8364] ? ext4_xattr_ibody_get+0x68/0x630 [ 42.140118][ T8364] ? apparmor_capable+0xfe/0x160 [ 42.145038][ T8364] ? __rcu_read_unlock+0x45/0x250 [ 42.150053][ T8364] ? ext4_xattr_get+0x27d/0x580 [ 42.154897][ T8364] ? strncmp+0x34/0x70 [ 42.158958][ T8364] ima_collect_measurement+0x168/0x310 [ 42.164401][ T8364] process_measurement+0xa88/0x10f0 [ 42.169579][ T8364] ? dquot_file_open+0x68/0x80 [ 42.174341][ T8364] ? ext4_file_open+0x186/0x570 [ 42.179208][ T8364] ? aa_get_newest_label+0x74/0x250 [ 42.184472][ T8364] ? fsnotify_perm+0x299/0x2e0 [ 42.189224][ T8364] ? __rcu_read_unlock+0x5c/0x250 [ 42.194318][ T8364] ? aa_get_task_label+0x72/0xc0 [ 42.199243][ T8364] ? apparmor_task_getsecid+0x81/0xa0 [ 42.204683][ T8364] ima_file_check+0x75/0xa0 [ 42.209167][ T8364] path_openat+0x19c5/0x21b0 [ 42.213927][ T8364] do_filp_open+0xbd/0x1d0 [ 42.218326][ T8364] ? _raw_spin_unlock+0x22/0x40 [ 42.223165][ T8364] ? alloc_fd+0x35d/0x3b0 [ 42.227485][ T8364] do_sys_openat2+0xa3/0x250 [ 42.232055][ T8364] ? mem_cgroup_handle_over_high+0x34/0x4d0 [ 42.238535][ T8364] __x64_sys_openat+0xef/0x110 [ 42.243284][ T8364] do_syscall_64+0x39/0x80 [ 42.247683][ T8364] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 42.253657][ T8364] RIP: 0033:0x4af20a [ 42.257532][ T8364] Code: e8 3b 82 fb 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 [ 42.277120][ T8364] RSP: 002b:000000c0003717a0 EFLAGS: 00000202 ORIG_RAX: 0000000000000101 [ 42.285625][ T8364] RAX: ffffffffffffffda RBX: 000000c00001e800 RCX: 00000000004af20a [ 42.293574][ T8364] RDX: 0000000000080002 RSI: 000000c003bc4460 RDI: ffffffffffffff9c [ 42.301542][ T8364] RBP: 000000c000371818 R08: 0000000000000000 R09: 0000000000000000 [ 42.309508][ T8364] R10: 00000000000001a4 R11: 0000000000000202 R12: ffffffffffffffff [ 42.317457][ T8364] R13: 0000000000000024 R14: 0000000000000023 R15: 0000000000000100 [ 42.325462][ T8364] Kernel Offset: disabled [ 42.329790][ T8364] Rebooting in 86400 seconds..