Warning: Permanently added '10.128.0.135' (ECDSA) to the list of known hosts. 2019/12/28 10:52:37 fuzzer started 2019/12/28 10:52:39 dialing manager at 10.128.0.105:42075 2019/12/28 10:52:40 syscalls: 2692 2019/12/28 10:52:40 code coverage: enabled 2019/12/28 10:52:40 comparison tracing: enabled 2019/12/28 10:52:40 extra coverage: enabled 2019/12/28 10:52:40 setuid sandbox: enabled 2019/12/28 10:52:40 namespace sandbox: enabled 2019/12/28 10:52:40 Android sandbox: /sys/fs/selinux/policy does not exist 2019/12/28 10:52:40 fault injection: enabled 2019/12/28 10:52:40 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled 2019/12/28 10:52:40 net packet injection: enabled 2019/12/28 10:52:40 net device setup: enabled 2019/12/28 10:52:40 concurrency sanitizer: enabled 2019/12/28 10:52:40 devlink PCI setup: PCI device 0000:00:10.0 is not available 2019/12/28 10:52:42 adding functions to KCSAN blacklist: 'tick_sched_do_timer' 'ep_poll' 'tick_do_update_jiffies64' '__ext4_new_inode' '__hrtimer_run_queues' 'blk_mq_get_request' 'mod_timer' 'pcpu_alloc' 'run_timer_softirq' 'tomoyo_supervisor' 'generic_write_end' 'do_nanosleep' 'ext4_free_inode' '__rb_erase_color' 'find_get_pages_range_tag' 'find_next_bit' 10:52:49 executing program 0: socketpair$unix(0x1, 0x5, 0x0, &(0x7f00000000c0)={0xffffffffffffffff, 0xffffffffffffffff}) r1 = dup(r0) ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200) sendmsg$nl_route(0xffffffffffffffff, &(0x7f0000000180)={0x0, 0x0, &(0x7f00000000c0)={&(0x7f0000000000)=@newlink={0x3c, 0x10, 0x401, 0x0, 0x0, {}, [@IFLA_LINKINFO={0x1c, 0x12, @ipip={{0xc, 0x1, 'ipip\x00'}, {0xc, 0x2, [@IFLA_IPTUN_PROTO={0x8}]}}}]}, 0x3c}}, 0x0) r2 = socket(0x10, 0x80002, 0x0) sendmmsg$alg(r2, &(0x7f0000000180), 0x27a4eaa51029717, 0x0) 10:52:50 executing program 1: r0 = openat$kvm(0xffffffffffffff9c, &(0x7f0000000180)='/dev/kvm\x00', 0x0, 0x0) r1 = ioctl$KVM_CREATE_VM(r0, 0xae01, 0x0) r2 = ioctl$KVM_CREATE_VCPU(r1, 0xae41, 0x0) ioctl$KVM_SET_USER_MEMORY_REGION(r1, 0x4020ae46, &(0x7f0000000400)={0x0, 0x3, 0x0, 0x2000, &(0x7f0000000000/0x2000)=nil}) syz_kvm_setup_cpu$x86(0xffffffffffffffff, r2, &(0x7f0000000000/0x18000)=nil, 0x0, 0x73, 0x0, 0x0, 0x25f) openat(0xffffffffffffffff, &(0x7f0000000000)='./file0\x00', 0x0, 0x0) socketpair$unix(0x1, 0x5, 0x0, &(0x7f0000000040)={0xffffffffffffffff}) r4 = dup(r3) ioctl$PERF_EVENT_IOC_ENABLE(r4, 0x8912, 0x400200) getsockopt$inet_sctp6_SCTP_LOCAL_AUTH_CHUNKS(0xffffffffffffffff, 0x84, 0x1b, &(0x7f0000000440)=ANY=[@ANYRES32=0x0, @ANYBLOB="0e0c000022dd7392d0f23f1ee16b363fda1cc6929ca64288403be7d38b01a3f3379c0f18e55b549760c258b275ee862fedb523f039283234eb8fd040a634120c3dceb1f7fe2fd24f2fd063b1beb43210e5cb6c700b73039ff207724cef5152e471459d233b805f46d5ee7b9d737eb8d73214b7e622cfc8a9c16be663e8c4f28215ad4b23dc64b27e8b19c27e298686cb8a121615377bf4e443b17e25911df49d9d4858196409c88a75b3700b4b23b8971ed3ee46808336f49b30c6a93454049c4d91113e611a221165c970b859c4ad8868ba8e4c1015f8341d5e3a69b093b0a368ea718c95d948ce2b1ed24e4f27f9f21fef95b3ce79258d9f99fe30cfac49dd778550c499988cd78952ebc529b870c12ff9d63e7a148d332ce925f000e5f6860232a3b19935dd9d525e44fc7529347c4214982e9281e8adbc05ca8233482d4287f967f2500ca5293df03dbd1d348db4409f3f571c3ca89834259ffd30a1d7da1768068feee670ae8f60234a911f142a7c22c2366ba1e3881686258ac6a20a3dbb453f10a003a4e180e43e648a2e6284bac2352981d839167fede66e69641777fb752224bf381097bf5f724fad900ff300f8182ab5ceca543f311260c45ecf4249d92435b21696c065095328e32f27e9463ec9a08d5df9e02b1336345e910502abc0e9acb1362bbf193cf8e92413733b519818dfe5b437b77a317bcb9000b5ce6bb5a66d579ebff98d5c4322fdbf9fbf6022486e2ba8f1ae7f67a5a3f4f08ffbf938ba0211f43aae92e5c06b2c5dd0cdc65b8d0058ef2f02d0944d2b2b23bf815015dcd29e41ea32b85ea732753c1c42389ba0998f6509a3e0ea21867e24dae22617a961348fce798b7443816867e0b2f6defaa236316fb0e97633af4c040000008c3aa792c039434a6f389a784cd1f8f2df357938d2388f705124e4989d3a9f536bb93459532868e6e39fa4239c75fc4268e62d98c3d8029f32ac62a1ff7481389d1b53aa1515a042bbce85de7c35025701bf46047ac0572c4c6d3becd5b13d969261a50440dc84faed9260bae45c8f15c1d62027a51a6f719861890618b11084aab27de8ae3fac6aea3cc6ee4997d3a15afb26f18d925a2a53057877015ced507160aa894eb95777ef58fe68a178f8b58884ca180929570dcd4e71ffdc0138b737e722d9a1be5a20a2e39d532516de70e5c9ab4bc3ce89cbb68f76debe1a93c8886039321b3d93f6cbb04b3eefe60adcfc552476c2c3fb62b06543675fede2e4998f94d713cfc10e2e72a9d980b1555f5ebacc297b6df54914f16be2a58e58f15ad18586ddfc757fae0f421926517a3f92c2d57002eb5d8e86e0cf46fb768d6549f8d51408726763c37d3e81b529f1a3fad486f58d9d2b2668459528e9b9f14797115f4aa85b413c6ab1f8694f5a6bffccbce27e3e575c72e05cfbc4d25c580537e59658383ddacee3e70e1a160bb1099cd4684bb3027fde7d4b0025be8ce1adc68fad3d874ef8647d7be8a79feba32b1a11ee07832ee46aad24b68f6da423b99f34350044c9429405b67285721853d1d016cdd71058398b9c6d749d08f38194175320490bbc5be60fd88c367d7d7ab610f78be123c9bcfa9b6fa43bceebdf4296ff6619b07055e0231b91a1372cb43d7299e88306169f565c5a9ecc9801016a3b31580d13ad2554f04766a8ffe8c7f492f361eb9081dc5fa1348d66f4087891e8f4f7653f7b77d1d107493626ad6c6b60eb2e0683b85cde9672c9739400f07ddea267472ed1e79b5e02bde1fae2acd07c1149328237cc93604e4a95a3efadd7b9001636a6a63d3f11857f973ace9ec0ec647d59303bdd0d7b45890e8e97434f24f07e7d6053453aad03297c5ac0e4e26d0d9428fddf7a44d1b868bd58dc81368cc0162ee40828d2fc0dde9bebfcb9e590bf5bdb1bb33adaf58fbd8b37839dfd834dff7c16bdc323c7625cbd35dc95dc8f3e44aedb66e6aeeb87508e936aceec17ba81d99a7a40ab529ad745b4c7a068c760187042087d222f951a6da370e4eb2594738a4260364239f9adc3e37772e734e67d1cdc9d79dbe3662524c393b05054cb267c282378a710ec737c4cfee475e70c6ab9283ade2737156fa824089106fbf4c341d645c78a50404b4924ea604e37aacbe2b5231afc8dcae5637053d306a20297272ef7b77aa2a36770e61e2e409a8f7018210334c420e0cb7a0ec734e7b9c17985cb989ea08ab9c73f387f3b3e23abe50c1a8c79ae7f422b13364c087cf4cd573d843f1be4f5c922b817c4dc4df36f3e5485417a082ef7d2b0f74402f0ca26189419f6821dc204a9d496e88c39d2eb99b27e969b406ec8871a4a16895b6c3d7bcbfcd3ca642ad42eef793695e8fe05c204087fe5edcf092944e9d781409cfc615c39849d83d9a11a8d86f641b502f26c83e37becd3afad97b6b7640b893a543088d9378488b4709da2a23e49c148e0ad4a45e51d1417b42742672c417b744e261b2a7e1b0243c8b7a6d5d84603a0e478ca58759b23e4ef0ce44b25559c8090b8df90da780b43f373e44c384765fa03ee28a90a5759af300a5b795eb0173492f5af9499d506cc6917f1277a3294d3e7c8fd3e27763512532d5b3f28fc19e08bf313dd0228d7b03d2426f5e21d858d3dffda7550d27b33405ec6a7c59b964e09a5e5fbc3818b8dad8f0c7f9605ee55478049cff603fd624c12386bda38b12a5169fa05c4d049439844e2db2ff9f668006579aa77189b1d929287ccfb6d22a81534a70c3051e1fbaea41540a3bd1100f8d87c0f735f9213972c511023f4c502016e8341a79fb3360c6bcc924c419bc87f020beec0e6701005ff300d702a617cc9ba48c5869070aeeefadc09089408db8dbe6824a8a14a975e365a16bac46b98136fbb2b8fb8d41d92b2ef5bbe0d8982fdad947d09b65c7268183678fd889c31207f174b22b2674523ad575a5ed398249e4c1eea73c10c1c3b123bfab9812d8897299f4205b2c6755e9d5146a07634c3ac6da837f8feb5a296a19479c9e8bf8725652dd12dcb741f9bb044e5d6053625be22c7e93087a16c59289ed3b37dbeafcfcd4ce16d968db72a8b4ab7a6195b5d0f5d83877f72508b6fac7a2fe3abedc3c03ee9b8c65b0e653f4aaa4ba8496091e769bae887397fd9cd5f9c5943938737188cf27392902297bd6bc33a9d5dc6b19cb4ed19dde70e7bbd26b6e31ba8add8434bffdfb82411443ef47967a35928673fcec2c7aa746079d832e4b48b4931053ce9f7edc12c7aecb2ebbc50586fc65e0497523617626782b4486954664848ddb28586cc01926bcc0f0bba74c1bfd17cdf6bc5fc6936c91c6d6515839cd948e64ab9779c057504d5d3e2e71440bd211201618115dd2996b68242e9779b3cf6c57c8bfe82af0342a8157bedcdc02fe2c3764d0f3729867ba529f62aa295ed39c81b6eb660bf37530b834a4f18064851a578cc0c7357a2a9e1e586cb72b4bffae750233b86af57238eaf95a25c4c68382bc29ab33a8a428f4ec305f26fe73e976937cd657e6a13c62d69dade325f31e9cfb8615be97790f36ea9f5d79e724e87181a96bab2e9262ba7c0a002e5dd1210ae3ebdf676f75441a3d6c5c175d4c6023d9be7dbf2198b6f0e1ded7387719c4929deb9f96b4c533f121904fce0441e72c8cd87d8fad6cb9874ed81dab6960110c7e0be7346b371a270cc3f192b9e233c9a3628304b8dd9e5b7164a6f1e18a5b5d5a4b2dd1f3e4f0d630b2df9a2d8ac563581bc8d10cdb2462868729ea78424bff372110807390c75abc14bf3eb565d6103438e9931ea91cc9e52805188762d11d81439592a21cc538f1dbf45099a34d0e8ce170e11261e18087f36cc6be9e983a654f85a338564f9ba2f440f6c450cf05e91f06ce006ff612aff08eac8741d64568bfeb695060b7f1f5507ad92b01de0b89c0442c98005481ef9f4ad7db7ceab97759e1d39253ab19b543bd0e590cad5d0ec2875bcd105b980ee811169be3457e9a756d0622b99653d6dba47b61bf8d461b6d02c8bfc6febfc7ddc3e993d0bcf0e7cbaa0b6e2e547569ba465f65e43da5413df9d2c6ac4b5e16545a6bd85c78a7b68f9f0dabfed52bdeafafefa6749aaf1be9c9f9f4bb93bbf4fc87e51119f0a5bccd4f3a4723534fb71d2c705efcc027279f9de099aa5d884b77cc0b5aa27d9416e088b0267b3ad3a046704ee62be145c928bd65e9f26a1277105d385c7bb46d14a4f2cec3abcd49a4a68ad67a7e0af0031527b0a37c70d0f351d11cf9b28cf66aba027956782a48b2129ab80b6aee67fc5425f75cd5a17036aa520b4da01c25984a8779a6c29e62da4c567613db1b5fcbab124cc9149c86131f6981c4dc9f698ed"], 0x0) ioctl$KVM_RUN(r2, 0xae80, 0x0) syzkaller login: [ 74.582084][ T7966] IPVS: ftp: loaded support on port[0] = 21 [ 74.681270][ T7966] chnl_net:caif_netlink_parms(): no params data found [ 74.739386][ T7969] IPVS: ftp: loaded support on port[0] = 21 [ 74.752913][ T7966] bridge0: port 1(bridge_slave_0) entered blocking state [ 74.776159][ T7966] bridge0: port 1(bridge_slave_0) entered disabled state [ 74.783621][ T7966] device bridge_slave_0 entered promiscuous mode [ 74.797187][ T7966] bridge0: port 2(bridge_slave_1) entered blocking state [ 74.804296][ T7966] bridge0: port 2(bridge_slave_1) entered disabled state [ 74.812331][ T7966] device bridge_slave_1 entered promiscuous mode 10:52:50 executing program 2: r0 = timerfd_create(0x9, 0x0) socketpair$unix(0x1, 0x2, 0x0, &(0x7f0000000040)={0xffffffffffffffff, 0xffffffffffffffff}) timerfd_settime(r0, 0x1, &(0x7f0000000100)={{0x0, 0x989680}, {0x0, 0x989680}}, 0x0) ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200) timerfd_settime(r0, 0x0, &(0x7f0000000000)={{0x2400000000000000}, {0x0, 0x1c9c380}}, 0x0) [ 74.843710][ T7966] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 74.864122][ T7966] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 74.922891][ T7966] team0: Port device team_slave_0 added [ 74.936916][ T7966] team0: Port device team_slave_1 added [ 74.953424][ T7969] chnl_net:caif_netlink_parms(): no params data found [ 75.078231][ T7966] device hsr_slave_0 entered promiscuous mode 10:52:50 executing program 3: r0 = socket$inet6(0xa, 0x3, 0x3c) socketpair$unix(0x1, 0x2, 0x0, &(0x7f0000000240)={0xffffffffffffffff, 0xffffffffffffffff}) r3 = dup2(r2, r1) ioctl$PERF_EVENT_IOC_ENABLE(r3, 0x8912, 0x400200) connect$inet6(r0, &(0x7f0000000040)={0xa, 0x0, 0x0, @mcast2, 0x9}, 0x1c) sendmsg(r0, &(0x7f0000000a40)={0x0, 0x3a, &(0x7f0000000380)=[{&(0x7f00000003c0)="339a", 0x2d05}], 0x1}, 0x0) [ 75.126976][ T7966] device hsr_slave_1 entered promiscuous mode [ 75.208607][ T7969] bridge0: port 1(bridge_slave_0) entered blocking state [ 75.213073][ T7972] IPVS: ftp: loaded support on port[0] = 21 [ 75.225780][ T7969] bridge0: port 1(bridge_slave_0) entered disabled state [ 75.233713][ T7969] device bridge_slave_0 entered promiscuous mode [ 75.245420][ T7969] bridge0: port 2(bridge_slave_1) entered blocking state [ 75.265797][ T7969] bridge0: port 2(bridge_slave_1) entered disabled state [ 75.273547][ T7969] device bridge_slave_1 entered promiscuous mode [ 75.308747][ T7966] netdevsim netdevsim0 netdevsim0: renamed from eth0 10:52:50 executing program 4: r0 = socket$inet6_tcp(0xa, 0x1, 0x0) r1 = fcntl$dupfd(r0, 0x0, r0) ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200) r2 = bpf$PROG_LOAD(0x5, &(0x7f0000000200)={0x4, 0xe, &(0x7f0000000380)=ANY=[@ANYBLOB="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"], &(0x7f0000000340)='syzkaller\x00'}, 0x48) bpf$BPF_PROG_TEST_RUN(0xa, &(0x7f0000000280)={r2, 0x0, 0xe, 0x1e9, &(0x7f0000000180)="c45c57ce395de5b2810f7d637a22", 0x0, 0xf0, 0x0, 0xffad, 0x0, &(0x7f0000000040)}, 0x28) [ 75.382127][ T7974] IPVS: ftp: loaded support on port[0] = 21 [ 75.401800][ T7966] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 75.457887][ T7966] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 75.519480][ T7969] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 75.540647][ T7966] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 75.608427][ T7969] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 75.638772][ T7976] IPVS: ftp: loaded support on port[0] = 21 10:52:51 executing program 5: r0 = socket$nl_netfilter(0x10, 0x3, 0xc) sendmsg$nl_netfilter(r0, &(0x7f0000003600)={0x0, 0x0, &(0x7f00000035c0)={&(0x7f0000000400)={0x14, 0x10, 0x0, 0x0, 0x0, 0x0, {0x0, 0x0, 0x3}}, 0x14}}, 0x0) [ 75.662074][ T7969] team0: Port device team_slave_0 added [ 75.676178][ T7966] bridge0: port 2(bridge_slave_1) entered blocking state [ 75.683444][ T7966] bridge0: port 2(bridge_slave_1) entered forwarding state [ 75.690783][ T7966] bridge0: port 1(bridge_slave_0) entered blocking state [ 75.697832][ T7966] bridge0: port 1(bridge_slave_0) entered forwarding state [ 75.724900][ T3601] bridge0: port 1(bridge_slave_0) entered disabled state [ 75.737815][ T3601] bridge0: port 2(bridge_slave_1) entered disabled state [ 75.762230][ T7969] team0: Port device team_slave_1 added [ 75.806095][ T7979] IPVS: ftp: loaded support on port[0] = 21 [ 75.887854][ T7969] device hsr_slave_0 entered promiscuous mode [ 75.956066][ T7969] device hsr_slave_1 entered promiscuous mode [ 76.035853][ T7969] debugfs: Directory 'hsr0' with parent '/' already present! [ 76.049422][ T7972] chnl_net:caif_netlink_parms(): no params data found [ 76.132352][ T7972] bridge0: port 1(bridge_slave_0) entered blocking state [ 76.140743][ T7972] bridge0: port 1(bridge_slave_0) entered disabled state [ 76.148678][ T7972] device bridge_slave_0 entered promiscuous mode [ 76.169829][ T7966] 8021q: adding VLAN 0 to HW filter on device bond0 [ 76.176607][ T10] ================================================================== [ 76.184787][ T10] BUG: KCSAN: data-race in rcu_gp_fqs_loop / rcu_preempt_deferred_qs_irqrestore [ 76.193791][ T10] [ 76.196127][ T10] write to 0xffffffff85c7d190 of 8 bytes by task 7969 on cpu 0: [ 76.199034][ T7972] bridge0: port 2(bridge_slave_1) entered blocking state [ 76.203756][ T10] rcu_preempt_deferred_qs_irqrestore+0x43d/0x580 [ 76.203781][ T10] __rcu_read_unlock+0x16a/0x3d0 [ 76.212820][ T7972] bridge0: port 2(bridge_slave_1) entered disabled state [ 76.217204][ T10] sock_def_readable+0xd0/0x140 [ 76.217221][ T10] __netlink_sendskb+0x65/0x80 [ 76.217248][ T10] netlink_broadcast_filtered+0x78a/0x960 [ 76.224613][ T7972] device bridge_slave_1 entered promiscuous mode [ 76.229263][ T10] netlink_broadcast+0x43/0x60 [ 76.229282][ T10] kobject_uevent_env+0x710/0xc80 [ 76.229307][ T10] kobject_uevent+0x29/0x40 [ 76.246654][ T7972] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 76.250901][ T10] driver_bound+0x13c/0x150 [ 76.257363][ T7972] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 76.260664][ T10] really_probe+0x2ae/0x4b0 [ 76.260679][ T10] driver_probe_device+0xbe/0x170 [ 76.260693][ T10] __device_attach_driver+0x13a/0x160 [ 76.260705][ T10] bus_for_each_drv+0xeb/0x140 [ 76.260728][ T10] __device_attach+0x18f/0x260 [ 76.275635][ T7972] team0: Port device team_slave_0 added [ 76.278697][ T10] device_initial_probe+0x24/0x30 [ 76.278710][ T10] bus_probe_device+0x14c/0x170 [ 76.278736][ T10] device_add+0xd9f/0x1040 [ 76.289211][ T7972] team0: Port device team_slave_1 added [ 76.292352][ T10] device_register+0x27/0x40 [ 76.350624][ T10] new_device_store+0x1b4/0x330 [ 76.355457][ T10] bus_attr_store+0x5e/0x80 [ 76.360034][ T10] sysfs_kf_write+0xb2/0xe0 [ 76.364650][ T10] kernfs_fop_write+0x1bd/0x300 [ 76.369660][ T10] __vfs_write+0x67/0xc0 [ 76.373886][ T10] vfs_write+0x18a/0x390 [ 76.378110][ T10] ksys_write+0xd5/0x1b0 [ 76.382339][ T10] __x64_sys_write+0x4c/0x60 [ 76.387085][ T10] do_syscall_64+0xcc/0x3a0 [ 76.391574][ T10] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 76.397444][ T10] [ 76.399755][ T10] read to 0xffffffff85c7d190 of 8 bytes by task 10 on cpu 1: [ 76.407259][ T10] rcu_gp_fqs_loop+0x23c/0x580 [ 76.412014][ T10] rcu_gp_kthread+0x143/0x230 [ 76.416681][ T10] kthread+0x1d4/0x200 [ 76.420733][ T10] ret_from_fork+0x1f/0x30 [ 76.425124][ T10] [ 76.427430][ T10] Reported by Kernel Concurrency Sanitizer on: [ 76.433660][ T10] CPU: 1 PID: 10 Comm: rcu_preempt Not tainted 5.5.0-rc1-syzkaller #0 [ 76.441797][ T10] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 76.452869][ T10] ================================================================== [ 76.460929][ T10] Kernel panic - not syncing: panic_on_warn set ... [ 76.467497][ T10] CPU: 1 PID: 10 Comm: rcu_preempt Not tainted 5.5.0-rc1-syzkaller #0 [ 76.475619][ T10] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 76.485658][ T10] Call Trace: [ 76.488932][ T10] dump_stack+0x11d/0x181 [ 76.493310][ T10] panic+0x210/0x640 [ 76.497202][ T10] ? vprintk_func+0x8d/0x140 [ 76.501775][ T10] kcsan_report.cold+0xc/0xd [ 76.507492][ T10] kcsan_setup_watchpoint+0x3fe/0x460 [ 76.513638][ T10] __tsan_read8+0xc6/0x100 [ 76.518036][ T10] rcu_gp_fqs_loop+0x23c/0x580 [ 76.522788][ T10] rcu_gp_kthread+0x143/0x230 [ 76.527470][ T10] kthread+0x1d4/0x200 [ 76.531525][ T10] ? rcu_gp_cleanup+0x520/0x520 [ 76.536355][ T10] ? kthread_unpark+0xe0/0xe0 [ 76.541028][ T10] ret_from_fork+0x1f/0x30 [ 76.547713][ T10] Kernel Offset: disabled [ 76.552039][ T10] Rebooting in 86400 seconds..