Warning: Permanently added '10.128.1.113' (ECDSA) to the list of known hosts. 2021/03/04 23:16:31 fuzzer started 2021/03/04 23:16:31 dialing manager at 10.128.0.163:40187 2021/03/04 23:16:33 syscalls: 3540 2021/03/04 23:16:33 code coverage: enabled 2021/03/04 23:16:33 comparison tracing: enabled 2021/03/04 23:16:33 extra coverage: enabled 2021/03/04 23:16:33 setuid sandbox: enabled 2021/03/04 23:16:33 namespace sandbox: enabled 2021/03/04 23:16:33 Android sandbox: /sys/fs/selinux/policy does not exist 2021/03/04 23:16:33 fault injection: enabled 2021/03/04 23:16:33 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled 2021/03/04 23:16:33 net packet injection: enabled 2021/03/04 23:16:33 net device setup: enabled 2021/03/04 23:16:33 concurrency sanitizer: enabled 2021/03/04 23:16:33 devlink PCI setup: PCI device 0000:00:10.0 is not available 2021/03/04 23:16:33 USB emulation: enabled 2021/03/04 23:16:33 hci packet injection: enabled 2021/03/04 23:16:33 wifi device emulation: enabled 2021/03/04 23:16:33 802.15.4 emulation: enabled 2021/03/04 23:16:35 suppressing KCSAN reports in functions: 'generic_write_end' 'blk_mq_rq_ctx_init' 'jbd2_journal_commit_transaction' 'alloc_pid' 'wg_packet_decrypt_worker' 'mm_update_next_owner' 'kauditd_thread' 'n_tty_receive_buf_common' '__writeback_single_inode' 'complete_signal' 'audit_log_start' 'ext4_mb_good_group' '__mark_inode_dirty' 'tick_nohz_next_event' '__jbd2_journal_file_buffer' 'xas_clear_mark' 'jbd2_journal_dirty_metadata' '__ext4_new_inode' 'expire_timers' 'blk_mq_sched_dispatch_requests' '__process_echoes' '__find_get_block' 'do_sys_poll' 'xas_find_marked' 'blk_mq_dispatch_rq_list' 'ext4_free_inodes_count' '__xa_clear_mark' 'ext4_fc_commit' '__send_signal' 'futex_wait_queue_me' 'dd_has_work' 'wbt_done' 'prandom_seed' 'ext4_mark_iloc_dirty' 'ext4_free_inode' 2021/03/04 23:16:35 fetching corpus: 0, signal 0/2000 (executing program) 2021/03/04 23:16:35 fetching corpus: 50, signal 24473/28136 (executing program) 2021/03/04 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fetching corpus: 13150, signal 270741/276961 (executing program) 2021/03/04 23:16:51 fetching corpus: 13200, signal 271035/276961 (executing program) 2021/03/04 23:16:51 fetching corpus: 13250, signal 271340/276961 (executing program) 2021/03/04 23:16:51 fetching corpus: 13295, signal 271721/276967 (executing program) 2021/03/04 23:16:51 fetching corpus: 13295, signal 271721/276967 (executing program) 2021/03/04 23:16:53 starting 6 fuzzer processes 23:16:53 executing program 0: set_mempolicy(0x3, &(0x7f00000000c0)=0x2, 0x4) r0 = bpf$PROG_LOAD(0x5, &(0x7f0000000080)={0x11, 0x8, 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&(0x7f0000000100)='GPL\x00'}, 0x48) bpf$BPF_RAW_TRACEPOINT_OPEN(0x11, &(0x7f0000000180)={&(0x7f0000000040)='sys_exit\x00', r0}, 0x10) syzkaller login: [ 50.800406][ T8353] ================================================================== [ 50.808626][ T8353] BUG: KCSAN: data-race in atime_needs_update / propagate_one [ 50.816081][ T8353] [ 50.818390][ T8353] write to 0xffff8881010030f0 of 4 bytes by task 8376 on cpu 1: [ 50.825995][ T8353] propagate_one+0x32d/0x400 [ 50.830579][ T8353] propagate_mnt+0x2f8/0x640 [ 50.835163][ T8353] attach_recursive_mnt+0x4fb/0x11c0 [ 50.840426][ T8353] path_mount+0x1acf/0x1c00 [ 50.844907][ T8353] __se_sys_mount+0x23d/0x2e0 [ 50.849565][ T8353] __x64_sys_mount+0x63/0x70 [ 50.854158][ T8353] do_syscall_64+0x39/0x80 [ 50.858617][ T8353] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 50.864494][ T8353] [ 50.866809][ T8353] read to 0xffff8881010030f0 of 4 bytes by task 8353 on cpu 0: [ 50.874453][ T8353] atime_needs_update+0x1e1/0x390 [ 50.879494][ T8353] touch_atime+0x55/0x2d0 [ 50.883800][ T8353] filemap_read+0x74f/0x7b0 [ 50.888298][ T8353] generic_file_read_iter+0x82/0x410 [ 50.893560][ T8353] ext4_file_read_iter+0x2e0/0x420 [ 50.898654][ T8353] __kernel_read+0x306/0x580 [ 50.903239][ T8353] integrity_kernel_read+0x4c/0x70 [ 50.908329][ T8353] ima_calc_file_hash+0x929/0x1310 [ 50.913417][ T8353] ima_collect_measurement+0x168/0x310 [ 50.918850][ T8353] process_measurement+0xa88/0x10f0 [ 50.924037][ T8353] ima_file_check+0x75/0xa0 [ 50.928514][ T8353] path_openat+0x19c5/0x21b0 [ 50.933079][ T8353] do_filp_open+0xbd/0x1d0 [ 50.937467][ T8353] do_sys_openat2+0xa3/0x250 [ 50.942048][ T8353] __x64_sys_openat+0xef/0x110 [ 50.946787][ T8353] do_syscall_64+0x39/0x80 [ 50.951179][ T8353] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 50.957048][ T8353] [ 50.959361][ T8353] Reported by Kernel Concurrency Sanitizer on: [ 50.965481][ T8353] CPU: 0 PID: 8353 Comm: syz-fuzzer Not tainted 5.12.0-rc1-syzkaller #0 [ 50.973785][ T8353] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 50.983813][ T8353] ================================================================== [ 50.991845][ T8353] Kernel panic - not syncing: panic_on_warn set ... [ 50.998417][ T8353] CPU: 0 PID: 8353 Comm: syz-fuzzer Not tainted 5.12.0-rc1-syzkaller #0 [ 51.006715][ T8353] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 51.016762][ T8353] Call Trace: [ 51.020034][ T8353] dump_stack+0x137/0x19d [ 51.024357][ T8353] panic+0x1e7/0x5fa [ 51.028228][ T8353] ? vprintk_emit+0x2fa/0x3e0 [ 51.032881][ T8353] kcsan_report+0x67b/0x680 [ 51.037362][ T8353] ? kcsan_setup_watchpoint+0x40b/0x470 [ 51.042896][ T8353] ? atime_needs_update+0x1e1/0x390 [ 51.048071][ T8353] ? touch_atime+0x55/0x2d0 [ 51.052550][ T8353] ? filemap_read+0x74f/0x7b0 [ 51.057201][ T8353] ? generic_file_read_iter+0x82/0x410 [ 51.062633][ T8353] ? ext4_file_read_iter+0x2e0/0x420 [ 51.067932][ T8353] ? __kernel_read+0x306/0x580 [ 51.072682][ T8353] ? integrity_kernel_read+0x4c/0x70 [ 51.077943][ T8353] ? ima_calc_file_hash+0x929/0x1310 [ 51.083206][ T8353] ? ima_collect_measurement+0x168/0x310 [ 51.088812][ T8353] ? process_measurement+0xa88/0x10f0 [ 51.094159][ T8353] ? ima_file_check+0x75/0xa0 [ 51.098810][ T8353] ? path_openat+0x19c5/0x21b0 [ 51.103549][ T8353] ? do_filp_open+0xbd/0x1d0 [ 51.108129][ T8353] ? do_sys_openat2+0xa3/0x250 [ 51.112895][ T8353] ? __x64_sys_openat+0xef/0x110 [ 51.117815][ T8353] ? do_syscall_64+0x39/0x80 [ 51.122383][ T8353] ? entry_SYSCALL_64_after_hwframe+0x44/0xae [ 51.128429][ T8353] kcsan_setup_watchpoint+0x40b/0x470 [ 51.133780][ T8353] atime_needs_update+0x1e1/0x390 [ 51.138780][ T8353] touch_atime+0x55/0x2d0 [ 51.143101][ T8353] ? mark_page_accessed+0x52f/0x5f0 [ 51.148276][ T8353] filemap_read+0x74f/0x7b0 [ 51.152756][ T8353] generic_file_read_iter+0x82/0x410 [ 51.158031][ T8353] ext4_file_read_iter+0x2e0/0x420 [ 51.163125][ T8353] __kernel_read+0x306/0x580 [ 51.167709][ T8353] integrity_kernel_read+0x4c/0x70 [ 51.172797][ T8353] ima_calc_file_hash+0x929/0x1310 [ 51.177886][ T8353] ? update_load_avg+0x1ad/0x2d0 [ 51.182816][ T8353] ? rb_insert_color+0x7e/0x310 [ 51.187645][ T8353] ? integrity_audit_message+0x7b/0x280 [ 51.193190][ T8353] ? widen_string+0x3a/0x280 [ 51.197754][ T8353] ? __rcu_read_unlock+0x45/0x250 [ 51.202867][ T8353] ? __down_read_common+0x14e/0x510 [ 51.208056][ T8353] ? aa_get_newest_label+0x74/0x250 [ 51.213241][ T8353] ? ext4_xattr_ibody_get+0x68/0x630 [ 51.218509][ T8353] ? apparmor_capable+0xfe/0x160 [ 51.223425][ T8353] ? __rcu_read_unlock+0x45/0x250 [ 51.228477][ T8353] ? ext4_xattr_get+0x27d/0x580 [ 51.233313][ T8353] ? strncmp+0x34/0x70 [ 51.237369][ T8353] ima_collect_measurement+0x168/0x310 [ 51.242813][ T8353] process_measurement+0xa88/0x10f0 [ 51.247997][ T8353] ? dquot_file_open+0x68/0x80 [ 51.252741][ T8353] ? ext4_file_open+0x186/0x570 [ 51.257571][ T8353] ? aa_get_newest_label+0x74/0x250 [ 51.262750][ T8353] ? fsnotify_perm+0x299/0x2e0 [ 51.267494][ T8353] ? __rcu_read_unlock+0x5c/0x250 [ 51.272498][ T8353] ? aa_get_task_label+0x72/0xc0 [ 51.277413][ T8353] ? apparmor_task_getsecid+0x81/0xa0 [ 51.282783][ T8353] ima_file_check+0x75/0xa0 [ 51.287270][ T8353] path_openat+0x19c5/0x21b0 [ 51.291840][ T8353] do_filp_open+0xbd/0x1d0 [ 51.296234][ T8353] ? _raw_spin_unlock+0x22/0x40 [ 51.301066][ T8353] ? alloc_fd+0x35d/0x3b0 [ 51.305373][ T8353] do_sys_openat2+0xa3/0x250 [ 51.309940][ T8353] ? mem_cgroup_handle_over_high+0x34/0x4d0 [ 51.315837][ T8353] __x64_sys_openat+0xef/0x110 [ 51.320596][ T8353] do_syscall_64+0x39/0x80 [ 51.324992][ T8353] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 51.330867][ T8353] RIP: 0033:0x4af20a [ 51.334771][ T8353] 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 [ 51.354615][ T8353] RSP: 002b:000000c0002a57a0 EFLAGS: 00000202 ORIG_RAX: 0000000000000101 [ 51.363006][ T8353] RAX: ffffffffffffffda RBX: 000000c00001c000 RCX: 00000000004af20a [ 51.370956][ T8353] RDX: 0000000000080002 RSI: 000000c0049a0be0 RDI: ffffffffffffff9c [ 51.378909][ T8353] RBP: 000000c0002a5818 R08: 0000000000000000 R09: 0000000000000000 [ 51.386858][ T8353] R10: 00000000000001a4 R11: 0000000000000202 R12: ffffffffffffffff [ 51.394811][ T8353] R13: 0000000000000060 R14: 000000000000005f R15: 0000000000000100 [ 51.403546][ T8353] Kernel Offset: disabled [ 51.407863][ T8353] Rebooting in 86400 seconds..