Warning: Permanently added '10.128.0.219' (ECDSA) to the list of known hosts. 2020/06/03 00:33:22 fuzzer started 2020/06/03 00:33:22 dialing manager at 10.128.0.105:34577 2020/06/03 00:33:23 syscalls: 3055 2020/06/03 00:33:23 code coverage: enabled 2020/06/03 00:33:23 comparison tracing: enabled 2020/06/03 00:33:23 extra coverage: enabled 2020/06/03 00:33:23 setuid sandbox: enabled 2020/06/03 00:33:23 namespace sandbox: enabled 2020/06/03 00:33:23 Android sandbox: /sys/fs/selinux/policy does not exist 2020/06/03 00:33:23 fault injection: enabled 2020/06/03 00:33:23 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled 2020/06/03 00:33:23 net packet injection: enabled 2020/06/03 00:33:23 net device setup: enabled 2020/06/03 00:33:23 concurrency sanitizer: enabled 2020/06/03 00:33:23 devlink PCI setup: PCI device 0000:00:10.0 is not available 2020/06/03 00:33:23 USB emulation: enabled 2020/06/03 00:33:23 adding functions to KCSAN blacklist: 'ep_poll' 'xas_clear_mark' 'file_update_time' 00:33:29 executing program 0: r0 = socket$kcm(0x2b, 0x200000000000001, 0x0) ioctl$sock_kcm_SIOCKCMUNATTACH(r0, 0x5452, &(0x7f0000000040)) poll(&(0x7f00000000c0)=[{r0}], 0x1, 0x0) syzkaller login: [ 57.237036][ T8913] ================================================================== [ 57.245173][ T8913] BUG: KCSAN: data-race in atime_needs_update / propagate_one [ 57.252388][ T8926] IPVS: ftp: loaded support on port[0] = 21 [ 57.252612][ T8913] [ 57.252625][ T8913] write to 0xffff88821b2ac5b0 of 4 bytes by task 8926 on cpu 0: [ 57.252644][ T8913] propagate_one+0x3b3/0x550 [ 57.252668][ T8913] propagate_mnt+0x22e/0x270 [ 57.277601][ T8913] attach_recursive_mnt+0x66d/0x8a0 [ 57.282801][ T8913] graft_tree+0x107/0x160 [ 57.287128][ T8913] do_add_mount.isra.0+0x102/0x190 [ 57.292240][ T8913] do_mount+0x12d5/0x1590 [ 57.296570][ T8913] __x64_sys_mount+0x12b/0x1a0 [ 57.301336][ T8913] do_syscall_64+0xc7/0x3b0 [ 57.305842][ T8913] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 57.311718][ T8913] [ 57.314046][ T8913] read to 0xffff88821b2ac5b0 of 4 bytes by task 8913 on cpu 1: [ 57.321593][ T8913] atime_needs_update+0x1c0/0x360 [ 57.326458][ T8926] chnl_net:caif_netlink_parms(): no params data found [ 57.326618][ T8913] touch_atime+0x63/0x150 [ 57.326632][ T8913] generic_file_read_iter+0x12fa/0x18c0 [ 57.326654][ T8913] ext4_file_read_iter+0x103/0x360 [ 57.348328][ T8913] new_sync_read+0x306/0x450 [ 57.352919][ T8913] __vfs_read+0x9e/0xb0 [ 57.357068][ T8913] integrity_kernel_read+0x97/0xe0 [ 57.362170][ T8913] ima_calc_file_hash_tfm+0x18f/0x240 [ 57.367785][ T8913] ima_calc_file_hash+0x147/0xeb0 [ 57.372803][ T8913] ima_collect_measurement+0x385/0x3b0 [ 57.378259][ T8913] process_measurement+0x91a/0x1000 [ 57.382592][ T8926] bridge0: port 1(bridge_slave_0) entered blocking state [ 57.383452][ T8913] ima_file_check+0x7e/0xb0 [ 57.383466][ T8913] path_openat+0x176e/0x23d0 [ 57.383480][ T8913] do_filp_open+0x11e/0x1b0 [ 57.383495][ T8913] do_sys_openat2+0x52e/0x680 [ 57.383544][ T8913] do_sys_open+0xa2/0x110 [ 57.391409][ T8926] bridge0: port 1(bridge_slave_0) entered disabled state [ 57.395027][ T8913] __x64_sys_openat+0x5d/0x70 [ 57.395045][ T8913] do_syscall_64+0xc7/0x3b0 [ 57.395071][ T8913] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 57.406871][ T8926] device bridge_slave_0 entered promiscuous mode [ 57.408762][ T8913] [ 57.415731][ T8926] bridge0: port 2(bridge_slave_1) entered blocking state [ 57.420078][ T8913] Reported by Kernel Concurrency Sanitizer on: [ 57.420093][ T8913] CPU: 1 PID: 8913 Comm: syz-fuzzer Not tainted 5.7.0-rc1-syzkaller #0 [ 57.420101][ T8913] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 57.420118][ T8913] ================================================================== [ 57.426130][ T8926] bridge0: port 2(bridge_slave_1) entered disabled state [ 57.429338][ T8913] Kernel panic - not syncing: panic_on_warn set ... [ 57.437265][ T8926] device bridge_slave_1 entered promiscuous mode [ 57.441521][ T8913] CPU: 1 PID: 8913 Comm: syz-fuzzer Not tainted 5.7.0-rc1-syzkaller #0 [ 57.456269][ T8926] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 57.456981][ T8913] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 57.467311][ T8926] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 57.475338][ T8913] Call Trace: [ 57.475365][ T8913] dump_stack+0x11d/0x187 [ 57.475393][ T8913] panic+0x210/0x640 [ 57.496736][ T8926] team0: Port device team_slave_0 added [ 57.497002][ T8913] ? vprintk_func+0x89/0x13a [ 57.504845][ T8926] team0: Port device team_slave_1 added [ 57.511563][ T8913] kcsan_report.cold+0xc/0x1a [ 57.533326][ T8926] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 57.539623][ T8913] kcsan_setup_watchpoint+0x3fb/0x440 [ 57.543230][ T8926] batman_adv: batadv0: The MTU of interface batadv_slave_0 is too small (1500) to handle the transport of batman-adv packets. Packets going over this interface will be fragmented on layer2 which could impact the performance. Setting the MTU to 1560 would solve the problem. [ 57.547198][ T8913] atime_needs_update+0x1c0/0x360 [ 57.551065][ T8926] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 57.556592][ T8913] touch_atime+0x63/0x150 [ 57.556623][ T8913] ? __sanitizer_cov_trace_switch+0x45/0x70 [ 57.565469][ T8926] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 57.566734][ T8913] generic_file_read_iter+0x12fa/0x18c0 [ 57.571390][ T8926] batman_adv: batadv0: The MTU of interface batadv_slave_1 is too small (1500) to handle the transport of batman-adv packets. Packets going over this interface will be fragmented on layer2 which could impact the performance. Setting the MTU to 1560 would solve the problem. [ 57.578323][ T8913] ext4_file_read_iter+0x103/0x360 [ 57.578355][ T8913] new_sync_read+0x306/0x450 [ 57.585245][ T8926] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 57.609599][ T8913] __vfs_read+0x9e/0xb0 [ 57.609628][ T8913] integrity_kernel_read+0x97/0xe0 [ 57.702945][ T8913] ima_calc_file_hash_tfm+0x18f/0x240 [ 57.708299][ T8913] ? should_fail+0x7c/0x2fd [ 57.712781][ T8913] ? widen_string+0x48/0x190 [ 57.717368][ T8913] ? string_nocheck+0xe1/0x100 [ 57.722111][ T8913] ? format_decode+0x19c/0xaa0 [ 57.726864][ T8913] ? __sanitizer_cov_trace_switch+0x45/0x70 [ 57.732732][ T8913] ? tomoyo_profile+0x3f/0x50 [ 57.737402][ T8913] ? __rcu_read_unlock+0x77/0x390 [ 57.742406][ T8913] ? tomoyo_write_log2+0x64/0x580 [ 57.747412][ T8913] ? setuid_policy_lookup+0xdf/0x110 [ 57.752677][ T8913] ima_calc_file_hash+0x147/0xeb0 [ 57.757679][ T8913] ? up_read+0x42/0x90 [ 57.761810][ T8913] ? ext4_xattr_get+0x10b/0x600 [ 57.766665][ T8913] ima_collect_measurement+0x385/0x3b0 [ 57.772128][ T8913] process_measurement+0x91a/0x1000 [ 57.777327][ T8913] ? dquot_file_open+0x60/0x80 [ 57.782241][ T8913] ? ext4_file_open+0x109/0x440 [ 57.787073][ T8913] ? __rcu_read_unlock+0x77/0x390 [ 57.792075][ T8913] ? aa_get_task_label+0x1ee/0x370 [ 57.797171][ T8913] ima_file_check+0x7e/0xb0 [ 57.801761][ T8913] path_openat+0x176e/0x23d0 [ 57.806333][ T8913] ? ext4_journal_check_start+0xf8/0x160 [ 57.811958][ T8913] ? __sanitizer_cov_trace_switch+0x45/0x70 [ 57.817825][ T8913] ? constant_test_bit+0xd/0x30 [ 57.822655][ T8913] ? wb_io_lists_populated+0x88/0xa0 [ 57.827963][ T8913] ? _raw_spin_unlock+0x38/0x60 [ 57.832825][ T8913] ? __sanitizer_cov_trace_switch+0x45/0x70 [ 57.838734][ T8913] do_filp_open+0x11e/0x1b0 [ 57.843395][ T8913] ? _find_next_bit.constprop.0+0x126/0x160 [ 57.849269][ T8913] ? __read_once_size+0x2f/0xd0 [ 57.854103][ T8913] ? _raw_spin_unlock+0x38/0x60 [ 57.858929][ T8913] ? __alloc_fd+0x2f3/0x3b0 [ 57.863416][ T8913] do_sys_openat2+0x52e/0x680 [ 57.868072][ T8913] do_sys_open+0xa2/0x110 [ 57.872382][ T8913] __x64_sys_openat+0x5d/0x70 [ 57.877055][ T8913] do_syscall_64+0xc7/0x3b0 [ 57.881545][ T8913] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 57.887413][ T8913] RIP: 0033:0x4b3d4a [ 57.891291][ T8913] 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 [ 57.910871][ T8913] RSP: 002b:000000c0002c5830 EFLAGS: 00000206 ORIG_RAX: 0000000000000101 [ 57.919257][ T8913] RAX: ffffffffffffffda RBX: 000000c00002c000 RCX: 00000000004b3d4a [ 57.927219][ T8913] RDX: 0000000000080002 RSI: 000000c0000b90a0 RDI: ffffffffffffff9c [ 57.935189][ T8913] RBP: 000000c0002c58a8 R08: 0000000000000000 R09: 0000000000000000 [ 57.943139][ T8913] R10: 00000000000001a4 R11: 0000000000000206 R12: ffffffffffffffff [ 57.951103][ T8913] R13: 0000000000000086 R14: 0000000000000085 R15: 0000000000000100 [ 57.960419][ T8913] Kernel Offset: disabled [ 57.964738][ T8913] Rebooting in 86400 seconds..