Warning: Permanently added '10.128.0.101' (ECDSA) to the list of known hosts. 2020/04/21 11:18:25 fuzzer started 2020/04/21 11:18:27 dialing manager at 10.128.0.105:44139 2020/04/21 11:18:27 syscalls: 2960 2020/04/21 11:18:27 code coverage: enabled 2020/04/21 11:18:27 comparison tracing: enabled 2020/04/21 11:18:27 extra coverage: enabled 2020/04/21 11:18:27 setuid sandbox: enabled 2020/04/21 11:18:27 namespace sandbox: enabled 2020/04/21 11:18:27 Android sandbox: /sys/fs/selinux/policy does not exist 2020/04/21 11:18:27 fault injection: enabled 2020/04/21 11:18:27 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled 2020/04/21 11:18:27 net packet injection: enabled 2020/04/21 11:18:27 net device setup: enabled 2020/04/21 11:18:27 concurrency sanitizer: enabled 2020/04/21 11:18:27 devlink PCI setup: PCI device 0000:00:10.0 is not available 2020/04/21 11:18:27 USB emulation: /dev/raw-gadget does not exist 2020/04/21 11:18:27 adding functions to KCSAN blacklist: 'alloc_pid' 'ep_poll' '__ext4_new_inode' 11:18:33 executing program 0: r0 = socket$inet6(0xa, 0x80002, 0x0) r1 = socket$inet_icmp_raw(0x2, 0x3, 0x1) r2 = dup(r1) ioctl$PERF_EVENT_IOC_ENABLE(r2, 0x8912, 0x400200) setsockopt$inet6_IPV6_FLOWLABEL_MGR(r0, 0x29, 0x20, &(0x7f0000000000)={@mcast2, 0x800, 0x0, 0x3, 0x100000000000001}, 0x20) connect$inet6(r0, &(0x7f00000000c0)={0xa, 0x0, 0x0, @mcast2, 0x6}, 0x1c) r3 = socket$nl_xfrm(0x10, 0x3, 0x6) sendmsg$nl_xfrm(r3, &(0x7f0000000080)={0x0, 0x0, &(0x7f00000bfff0)={&(0x7f0000000140)=@updpolicy={0xb8, 0x19, 0x1, 0x0, 0x0, {{@in6=@mcast1, @in=@multicast1, 0x0, 0x0, 0x0, 0x0, 0xa}}}, 0xb8}}, 0x0) setsockopt$inet6_IPV6_FLOWLABEL_MGR(r0, 0x29, 0x20, &(0x7f0000000040)={@mcast2={0xff, 0x2, [0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0xa4ffffff]}, 0x800, 0x0, 0x40000003}, 0x20) syzkaller login: [ 50.884399][ T6705] ================================================================== [ 50.892557][ T6705] BUG: KCSAN: data-race in atime_needs_update / propagate_one [ 50.900000][ T6705] [ 50.902331][ T6705] write to 0xffff88812b010830 of 4 bytes by task 6708 on cpu 1: [ 50.910001][ T6705] propagate_one+0x3b3/0x550 [ 50.914589][ T6705] propagate_mnt+0x22e/0x270 [ 50.919189][ T6705] attach_recursive_mnt+0x66d/0x8a0 [ 50.920712][ T6708] IPVS: ftp: loaded support on port[0] = 21 [ 50.924388][ T6705] graft_tree+0x107/0x160 [ 50.934594][ T6705] do_add_mount.isra.0+0x102/0x190 [ 50.939713][ T6705] do_mount+0x12d5/0x1590 [ 50.944044][ T6705] __x64_sys_mount+0x12b/0x1a0 [ 50.948808][ T6705] do_syscall_64+0xc7/0x3b0 [ 50.953312][ T6705] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 50.959200][ T6705] [ 50.961538][ T6705] read to 0xffff88812b010830 of 4 bytes by task 6705 on cpu 0: [ 50.969085][ T6705] atime_needs_update+0x1c0/0x360 [ 50.974088][ T6705] touch_atime+0x63/0x150 [ 50.978399][ T6705] generic_file_read_iter+0x11b0/0x14e0 [ 50.983924][ T6705] ext4_file_read_iter+0x103/0x360 [ 50.989016][ T6705] new_sync_read+0x306/0x450 [ 50.993633][ T6705] __vfs_read+0x9e/0xb0 [ 50.997777][ T6705] integrity_kernel_read+0x97/0xe0 [ 51.002873][ T6705] ima_calc_file_hash_tfm+0x18f/0x240 [ 51.008269][ T6705] ima_calc_file_hash+0x147/0xeb0 [ 51.013273][ T6705] ima_collect_measurement+0x385/0x3b0 [ 51.018711][ T6705] process_measurement+0x91a/0x1000 [ 51.024002][ T6705] ima_file_check+0x7e/0xb0 [ 51.028491][ T6705] path_openat+0x176e/0x23d0 [ 51.033071][ T6705] do_filp_open+0x11e/0x1b0 [ 51.037560][ T6705] do_sys_openat2+0x52e/0x680 [ 51.042230][ T6705] do_sys_open+0xa2/0x110 [ 51.046552][ T6705] __x64_sys_openat+0x5d/0x70 [ 51.051218][ T6705] do_syscall_64+0xc7/0x3b0 [ 51.055720][ T6705] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 51.061602][ T6705] [ 51.063909][ T6705] Reported by Kernel Concurrency Sanitizer on: [ 51.070042][ T6705] CPU: 0 PID: 6705 Comm: syz-fuzzer Not tainted 5.7.0-rc1-syzkaller #0 [ 51.078253][ T6705] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 51.088324][ T6705] ================================================================== [ 51.096472][ T6705] Kernel panic - not syncing: panic_on_warn set ... [ 51.103165][ T6705] CPU: 0 PID: 6705 Comm: syz-fuzzer Not tainted 5.7.0-rc1-syzkaller #0 [ 51.111466][ T6705] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 51.121500][ T6705] Call Trace: [ 51.124821][ T6705] dump_stack+0x11d/0x187 [ 51.129194][ T6705] panic+0x210/0x640 [ 51.133082][ T6705] ? vprintk_func+0x89/0x13a [ 51.137668][ T6705] kcsan_report.cold+0xc/0x1a [ 51.142482][ T6705] kcsan_setup_watchpoint+0x3fb/0x440 [ 51.147846][ T6705] atime_needs_update+0x1c0/0x360 [ 51.152859][ T6705] touch_atime+0x63/0x150 [ 51.157171][ T6705] ? __sanitizer_cov_trace_switch+0x45/0x70 [ 51.163050][ T6705] generic_file_read_iter+0x11b0/0x14e0 [ 51.168604][ T6705] ext4_file_read_iter+0x103/0x360 [ 51.173697][ T6705] new_sync_read+0x306/0x450 [ 51.178275][ T6705] __vfs_read+0x9e/0xb0 [ 51.182415][ T6705] integrity_kernel_read+0x97/0xe0 [ 51.187522][ T6705] ima_calc_file_hash_tfm+0x18f/0x240 [ 51.192879][ T6705] ? should_fail+0x7c/0x2fd [ 51.197364][ T6705] ? widen_string+0x48/0x190 [ 51.201951][ T6705] ? string_nocheck+0xe1/0x100 [ 51.206696][ T6705] ? format_decode+0x19c/0xaa0 [ 51.211442][ T6705] ? __sanitizer_cov_trace_switch+0x45/0x70 [ 51.217314][ T6705] ? tomoyo_profile+0x3f/0x50 [ 51.221985][ T6705] ? __rcu_read_unlock+0x77/0x390 [ 51.226988][ T6705] ? tomoyo_write_log2+0x64/0x580 [ 51.231994][ T6705] ? setuid_policy_lookup+0xdf/0x110 [ 51.237262][ T6705] ima_calc_file_hash+0x147/0xeb0 [ 51.242270][ T6705] ? up_read+0x42/0x90 [ 51.246323][ T6705] ? ext4_xattr_get+0x10b/0x600 [ 51.251156][ T6705] ima_collect_measurement+0x385/0x3b0 [ 51.256602][ T6705] process_measurement+0x91a/0x1000 [ 51.261785][ T6705] ? dquot_file_open+0x60/0x80 [ 51.266528][ T6705] ? ext4_file_open+0x109/0x440 [ 51.271361][ T6705] ? __rcu_read_unlock+0x77/0x390 [ 51.276374][ T6705] ? aa_get_task_label+0x1ee/0x370 [ 51.281472][ T6705] ima_file_check+0x7e/0xb0 [ 51.285958][ T6705] path_openat+0x176e/0x23d0 [ 51.290547][ T6705] ? ext4_journal_check_start+0xf8/0x160 [ 51.296176][ T6705] ? __sanitizer_cov_trace_switch+0x45/0x70 [ 51.302064][ T6705] ? constant_test_bit+0xd/0x30 [ 51.306918][ T6705] ? wb_io_lists_populated+0x88/0xa0 [ 51.312190][ T6705] ? _raw_spin_unlock+0x38/0x60 [ 51.317035][ T6705] ? __sanitizer_cov_trace_switch+0x45/0x70 [ 51.322928][ T6705] do_filp_open+0x11e/0x1b0 [ 51.327593][ T6705] ? _find_next_bit.constprop.0+0x126/0x160 [ 51.333474][ T6705] ? __read_once_size+0x2f/0xd0 [ 51.338320][ T6705] ? _raw_spin_unlock+0x38/0x60 [ 51.343168][ T6705] ? __alloc_fd+0x2f3/0x3b0 [ 51.347672][ T6705] do_sys_openat2+0x52e/0x680 [ 51.352350][ T6705] do_sys_open+0xa2/0x110 [ 51.356666][ T6705] __x64_sys_openat+0x5d/0x70 [ 51.361446][ T6705] do_syscall_64+0xc7/0x3b0 [ 51.365994][ T6705] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 51.371970][ T6705] RIP: 0033:0x47c5aa [ 51.375901][ T6705] Code: e8 7b 6b 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 [ 51.395654][ T6705] RSP: 002b:000000c4201c7850 EFLAGS: 00000206 ORIG_RAX: 0000000000000101 [ 51.404079][ T6705] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 000000000047c5aa [ 51.412244][ T6705] RDX: 0000000000080002 RSI: 000000c4201301e0 RDI: ffffffffffffff9c [ 51.420216][ T6705] RBP: 000000c4201c78d0 R08: 0000000000000000 R09: 0000000000000000 [ 51.428192][ T6705] R10: 00000000000001a4 R11: 0000000000000206 R12: ffffffffffffffff [ 51.436273][ T6705] R13: 0000000000000010 R14: 000000000000000f R15: 0000000000000100 [ 51.445649][ T6705] Kernel Offset: disabled [ 51.450072][ T6705] Rebooting in 86400 seconds..