[....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [ 52.429736][ T25] audit: type=1800 audit(1575412870.284:25): pid=8349 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2414 res=0 [ 52.459912][ T25] audit: type=1800 audit(1575412870.294:26): pid=8349 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 52.491626][ T25] audit: type=1800 audit(1575412870.294:27): pid=8349 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed(directio) comm="startpar" name="restorecond" dev="sda1" ino=2436 res=0 [....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 Warning: Permanently added '10.128.0.124' (ECDSA) to the list of known hosts. 2019/12/03 22:41:22 fuzzer started 2019/12/03 22:41:23 dialing manager at 10.128.0.26:42111 2019/12/03 22:41:23 syscalls: 2689 2019/12/03 22:41:23 code coverage: enabled 2019/12/03 22:41:23 comparison tracing: enabled 2019/12/03 22:41:23 extra coverage: extra coverage is not supported by the kernel 2019/12/03 22:41:23 setuid sandbox: enabled 2019/12/03 22:41:23 namespace sandbox: enabled 2019/12/03 22:41:23 Android sandbox: /sys/fs/selinux/policy does not exist 2019/12/03 22:41:23 fault injection: enabled 2019/12/03 22:41:23 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled 2019/12/03 22:41:23 net packet injection: enabled 2019/12/03 22:41:23 net device setup: enabled 2019/12/03 22:41:23 concurrency sanitizer: /sys/kernel/debug/kcsan does not exist 2019/12/03 22:41:23 devlink PCI setup: PCI device 0000:00:10.0 is not available 22:41:24 executing program 0: unshare(0x400) r0 = openat$uinput(0xffffffffffffff9c, &(0x7f0000000080)='/dev/uinput\x00', 0x0, 0x0) ioctl$UI_SET_FFBIT(r0, 0x4008556c, 0x0) 22:41:25 executing program 1: perf_event_open(&(0x7f0000000440)={0x2, 0x70, 0xb8, 0x2, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, @perf_bp={0x0}, 0x0, 0x0, 0x0, 0x0, 0x4000000000000000}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0) r0 = perf_event_open(&(0x7f000001d000)={0x1, 0x70, 0x0, 0x0, 0x0, 0x0, 0x0, 0x41c1, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, @perf_config_ext}, 0x0, 0xffffffffffffffff, 0xffffffffffffffff, 0x0) r1 = socket$inet6_tcp(0xa, 0x1, 0x0) r2 = open$dir(&(0x7f0000000100)='./file0\x00', 0x4002, 0x0) ioctl$LOOP_SET_FD(0xffffffffffffffff, 0x4c00, r2) name_to_handle_at(r2, &(0x7f0000000500)='./file0\x00', &(0x7f0000000540)=ANY=[@ANYBLOB="2a0000008b050000910cdbf565d4e1de4c7f0000009756586a1a193cce30b3c2bc61497ca02884dc112b"], &(0x7f0000000580), 0x1000) bind$inet6(r1, &(0x7f0000d84000)={0xa, 0x2}, 0x1c) setsockopt$inet6_tcp_TCP_MD5SIG(r1, 0x6, 0xe, &(0x7f0000000180)={@in6={{0xa, 0x0, 0x0, @loopback}}, 0x0, 0x2, 0x0, "8b63e98a6e9a990ceacccaa0722f7b17adbfb251c09e5993d319d88199f6923e646c1d3eaad49bc3c0a86bd1683c51ec36b5d2dab5a220e04e0b20637e2b5a8dd3403bbe1ccf681d083e2307d3f5597b"}, 0xd8) sendto$inet6(r1, &(0x7f00000005c0)="460c80511b34550cfee0c63b563d5b492151a02943d1ac1d57bcd2a744c719539e0683cfd2400af83899a54431230148e926c87471d9abda4684ca306376c8235ccab51b9e02cfea0c36d3d3cea28aa97599150259e4cb5033aa5b79ea95c62bfbcb879071f745881ffe90ce9ff65c92afeaac207810f6a41ebd1d7129134d86eb17417c9ebb89c48ae96ef142849b843faf22ff476f5c5579c06c9ad82f678bb629682a2fc53231ea608f79f02d627dc712475e9c171f6b658bc9505ce62b5d8a3755b1bf0a5c725403a69f4b49699d1d4ad0918c9ee836544c80412f84deb0b86a9a5e71f366936add54ad228c", 0xee, 0x20000004, &(0x7f0000b63fe4)={0xa, 0x2}, 0x1c) read(r0, &(0x7f0000000000)=""/71, 0x47) openat$ptmx(0xffffffffffffff9c, 0x0, 0x0, 0x0) r3 = openat$vcs(0xffffffffffffff9c, 0x0, 0x0, 0x0) r4 = socket$inet(0x10, 0x2000000003, 0x0) syz_open_dev$swradio(&(0x7f0000000080)='/dev/swradio#\x00', 0x0, 0x2) setsockopt$inet_group_source_req(0xffffffffffffffff, 0x0, 0x2f, &(0x7f0000006580)={0x6, {{0x2, 0x4e24, @loopback}}, {{0x2, 0x4e23, @local}}}, 0x108) sendmsg(r4, &(0x7f0000000040)={0x0, 0x262, &(0x7f0000009ff0)}, 0x0) clone(0x2000000002000100, 0x0, 0xfffffffffffffffe, 0x0, 0xffffffffffffffff) ioctl$sock_SIOCGPGRP(r4, 0x8904, &(0x7f0000000400)) ioctl$KVM_SET_CPUID(r3, 0x4008ae8a, &(0x7f00000066c0)=ANY=[@ANYBLOB="02000000001000003458979a8d000083000000f9ffffffffff08000000df0000000800000000000010585f31487615c79284cee09045e910a5fc027e788b4aae7cdba93f974c731cb710a4a37c066338c77bf55aed1cfde566a4150a446b18ff92a040ba2a24ca7be5b017ae5775f99f6f65ecda14acfca1b8ba222de62957beea1323390f98fad33699e32c7eff5c7be4b6cfe3c95f87d3ba5d451b38586a75d8f460298a31a66e7eb7efec268a9dd52968775d818ab3c0324156ae082dc45c265d16"]) r5 = gettid() clone(0x4200a400, 0x0, 0x0, 0x0, 0x0) ptrace$setopts(0x4206, r5, 0x0, 0x0) r6 = socket$alg(0x26, 0x5, 0x0) bind$alg(r6, &(0x7f0000000000)={0x26, 'skcipher\x00', 0x0, 0x0, 'salsa20\x00'}, 0x58) setsockopt$ALG_SET_KEY(r6, 0x117, 0x1, &(0x7f0000000100)="71e67a111fde54fe46b904832c8fff73", 0x10) r7 = accept4$alg(r6, 0x0, 0x0, 0x0) write$binfmt_script(r7, &(0x7f0000000300)=ANY=[], 0xfe08) read(r7, &(0x7f0000000380)=""/225, 0xfffffd0d) r8 = gettid() pipe(&(0x7f0000000180)) tkill(r8, 0x1000000000016) syzkaller login: [ 67.174651][ T8516] IPVS: ftp: loaded support on port[0] = 21 [ 67.296418][ T8516] chnl_net:caif_netlink_parms(): no params data found [ 67.344781][ T8516] bridge0: port 1(bridge_slave_0) entered blocking state [ 67.354176][ T8516] bridge0: port 1(bridge_slave_0) entered disabled state [ 67.363023][ T8516] device bridge_slave_0 entered promiscuous mode [ 67.374409][ T8516] bridge0: port 2(bridge_slave_1) entered blocking state [ 67.382042][ T8516] bridge0: port 2(bridge_slave_1) entered disabled state [ 67.392224][ T8516] device bridge_slave_1 entered promiscuous mode [ 67.416448][ T8516] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 67.419544][ T8519] IPVS: ftp: loaded support on port[0] = 21 [ 67.433803][ T8516] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 67.461208][ T8516] team0: Port device team_slave_0 added 22:41:25 executing program 2: r0 = perf_event_open(&(0x7f00000003c0)={0x2, 0x70, 0xeb, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, @perf_config_ext}, 0x0, 0x0, 0xffffffffffffffff, 0x0) ioctl$PERF_EVENT_IOC_SET_FILTER(r0, 0xc008240a, &(0x7f0000000040)='mime_type\x00') [ 67.469677][ T8516] team0: Port device team_slave_1 added [ 67.545255][ T8516] device hsr_slave_0 entered promiscuous mode [ 67.610575][ T8516] device hsr_slave_1 entered promiscuous mode [ 67.683857][ T8521] IPVS: ftp: loaded support on port[0] = 21 22:41:25 executing program 3: accept$packet(0xffffffffffffffff, 0x0, 0x0) userfaultfd(0x0) ioctl$UFFDIO_API(0xffffffffffffffff, 0xc018aa3f, 0x0) r0 = creat(&(0x7f0000000280)='./file0\x00', 0x0) close(r0) r1 = userfaultfd(0x0) mount$9p_fd(0x0, &(0x7f0000000000)='./file0\x00', &(0x7f0000000040)='9p\x00', 0x0, &(0x7f00000002c0)=ANY=[@ANYBLOB='trans=fd,rfdno=', @ANYRESHEX=r0, @ANYBLOB=',wfdno=', @ANYRESHEX=r1]) [ 67.749107][ T8516] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 67.827471][ T8516] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 67.905175][ T8516] netdevsim netdevsim0 netdevsim2: renamed from eth2 22:41:25 executing program 4: r0 = socket$pppoe(0x18, 0x1, 0x0) connect$pppoe(r0, &(0x7f0000000040)={0x18, 0x0, {0x3, @local, 'bridge0\x00'}}, 0x1e) sendmmsg(r0, &(0x7f0000003100)=[{{&(0x7f0000000780)=@can, 0x80, 0x0}}, {{&(0x7f0000000c40)=@can, 0x80, 0x0}}], 0x2, 0x0) [ 67.967189][ T8524] IPVS: ftp: loaded support on port[0] = 21 [ 67.974964][ T8516] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 68.048994][ T8519] chnl_net:caif_netlink_parms(): no params data found [ 68.135993][ T8516] bridge0: port 2(bridge_slave_1) entered blocking state [ 68.143328][ T8516] bridge0: port 2(bridge_slave_1) entered forwarding state [ 68.151488][ T8516] bridge0: port 1(bridge_slave_0) entered blocking state [ 68.158583][ T8516] bridge0: port 1(bridge_slave_0) entered forwarding state [ 68.218691][ T8519] bridge0: port 1(bridge_slave_0) entered blocking state [ 68.228860][ T8519] bridge0: port 1(bridge_slave_0) entered disabled state [ 68.237319][ T8519] device bridge_slave_0 entered promiscuous mode [ 68.251991][ T8519] bridge0: port 2(bridge_slave_1) entered blocking state [ 68.259068][ T8519] bridge0: port 2(bridge_slave_1) entered disabled state [ 68.282775][ T8519] device bridge_slave_1 entered promiscuous mode [ 68.324994][ T8528] IPVS: ftp: loaded support on port[0] = 21 22:41:26 executing program 5: socketpair$unix(0x1, 0x1, 0x0, &(0x7f0000000200)={0xffffffffffffffff, 0xffffffffffffffff}) r1 = fcntl$dupfd(r0, 0x0, r0) ioctl$PERF_EVENT_IOC_ENABLE(r1, 0x8912, 0x400200) unshare(0x400) r2 = socket$inet6(0xa, 0x1, 0x8010000000000084) setsockopt$inet_sctp6_SCTP_DEFAULT_PRINFO(r2, 0x84, 0x72, &(0x7f0000000080)={0x0, 0x0, 0x10}, 0xc) [ 68.367815][ T17] bridge0: port 1(bridge_slave_0) entered disabled state [ 68.392077][ T17] bridge0: port 2(bridge_slave_1) entered disabled state [ 68.409412][ T8519] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 68.422904][ T8521] chnl_net:caif_netlink_parms(): no params data found [ 68.458364][ T8519] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 68.557209][ T8533] IPVS: ftp: loaded support on port[0] = 21 [ 68.566805][ T8519] team0: Port device team_slave_0 added [ 68.576446][ T8519] team0: Port device team_slave_1 added [ 68.594079][ T8521] bridge0: port 1(bridge_slave_0) entered blocking state [ 68.601698][ T8521] bridge0: port 1(bridge_slave_0) entered disabled state [ 68.609426][ T8521] device bridge_slave_0 entered promiscuous mode [ 68.618060][ T8521] bridge0: port 2(bridge_slave_1) entered blocking state [ 68.625198][ T8521] bridge0: port 2(bridge_slave_1) entered disabled state [ 68.633090][ T8521] device bridge_slave_1 entered promiscuous mode [ 68.641050][ T8524] chnl_net:caif_netlink_parms(): no params data found [ 68.652801][ T8516] 8021q: adding VLAN 0 to HW filter on device bond0 [ 68.712906][ T8519] device hsr_slave_0 entered promiscuous mode [ 68.750403][ T8519] device hsr_slave_1 entered promiscuous mode [ 68.780012][ T8519] debugfs: Directory 'hsr0' with parent '/' already present! [ 68.823706][ T8521] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 68.838174][ T8521] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 68.877227][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 68.885934][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 68.912527][ T8516] 8021q: adding VLAN 0 to HW filter on device team0 [ 68.936482][ T8521] team0: Port device team_slave_0 added [ 68.967423][ T8524] bridge0: port 1(bridge_slave_0) entered blocking state [ 68.974878][ T8524] bridge0: port 1(bridge_slave_0) entered disabled state [ 68.982937][ T8524] device bridge_slave_0 entered promiscuous mode [ 68.991815][ T8524] bridge0: port 2(bridge_slave_1) entered blocking state [ 68.999070][ T8524] bridge0: port 2(bridge_slave_1) entered disabled state [ 69.006994][ T8524] device bridge_slave_1 entered promiscuous mode [ 69.015722][ T8529] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 69.024793][ T8529] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 69.033498][ T8529] bridge0: port 1(bridge_slave_0) entered blocking state [ 69.040645][ T8529] bridge0: port 1(bridge_slave_0) entered forwarding state [ 69.049412][ T8521] team0: Port device team_slave_1 added [ 69.059382][ T8519] netdevsim netdevsim1 netdevsim0: renamed from eth0 [ 69.099034][ T8519] netdevsim netdevsim1 netdevsim1: renamed from eth1 [ 69.203246][ T8521] device hsr_slave_0 entered promiscuous mode [ 69.270255][ T8521] device hsr_slave_1 entered promiscuous mode [ 69.330004][ T8521] debugfs: Directory 'hsr0' with parent '/' already present! [ 69.341418][ T8519] netdevsim netdevsim1 netdevsim2: renamed from eth2 [ 69.394271][ T8519] netdevsim netdevsim1 netdevsim3: renamed from eth3 [ 69.453573][ T8524] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 69.489455][ T43] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 69.499962][ T43] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 69.508404][ T43] bridge0: port 2(bridge_slave_1) entered blocking state [ 69.515524][ T43] bridge0: port 2(bridge_slave_1) entered forwarding state [ 69.532539][ T8524] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 69.554808][ T8528] chnl_net:caif_netlink_parms(): no params data found [ 69.567309][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 69.576635][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 69.596548][ T8533] chnl_net:caif_netlink_parms(): no params data found [ 69.615393][ T8524] team0: Port device team_slave_0 added [ 69.628186][ T8524] team0: Port device team_slave_1 added [ 69.636315][ T8529] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 69.645531][ T8529] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 69.654978][ T8529] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 69.667920][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 69.677428][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 69.715349][ T8516] hsr0: Slave A (hsr_slave_0) is not up; please bring it up to get a fully working HSR network [ 69.726966][ T8516] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 69.759157][ T8533] bridge0: port 1(bridge_slave_0) entered blocking state [ 69.766914][ T8533] bridge0: port 1(bridge_slave_0) entered disabled state [ 69.775855][ T8533] device bridge_slave_0 entered promiscuous mode [ 69.787801][ T8533] bridge0: port 2(bridge_slave_1) entered blocking state [ 69.794995][ T8533] bridge0: port 2(bridge_slave_1) entered disabled state [ 69.803260][ T8533] device bridge_slave_1 entered promiscuous mode [ 69.826033][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 69.836254][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 69.845877][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 69.854565][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 69.863052][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 69.923104][ T8524] device hsr_slave_0 entered promiscuous mode [ 69.961178][ T8524] device hsr_slave_1 entered promiscuous mode [ 69.999989][ T8524] debugfs: Directory 'hsr0' with parent '/' already present! [ 70.009055][ T8533] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 70.018427][ T8528] bridge0: port 1(bridge_slave_0) entered blocking state [ 70.028555][ T8528] bridge0: port 1(bridge_slave_0) entered disabled state [ 70.036491][ T8528] device bridge_slave_0 entered promiscuous mode [ 70.049183][ T8528] bridge0: port 2(bridge_slave_1) entered blocking state [ 70.056425][ T8528] bridge0: port 2(bridge_slave_1) entered disabled state [ 70.064427][ T8528] device bridge_slave_1 entered promiscuous mode [ 70.077086][ T8533] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 70.112203][ T8528] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 70.129621][ T8521] netdevsim netdevsim2 netdevsim0: renamed from eth0 [ 70.202918][ T8521] netdevsim netdevsim2 netdevsim1: renamed from eth1 [ 70.265719][ T8521] netdevsim netdevsim2 netdevsim2: renamed from eth2 [ 70.313318][ T8521] netdevsim netdevsim2 netdevsim3: renamed from eth3 [ 70.385707][ T8528] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 70.416276][ T8533] team0: Port device team_slave_0 added [ 70.439196][ T8524] netdevsim netdevsim3 netdevsim0: renamed from eth0 [ 70.464610][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 70.472278][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 70.485998][ T8533] team0: Port device team_slave_1 added [ 70.494507][ T8528] team0: Port device team_slave_0 added [ 70.516767][ T8524] netdevsim netdevsim3 netdevsim1: renamed from eth1 [ 70.543440][ T8524] netdevsim netdevsim3 netdevsim2: renamed from eth2 [ 70.607601][ T8516] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 70.652886][ T8533] device hsr_slave_0 entered promiscuous mode [ 70.680738][ T8533] device hsr_slave_1 entered promiscuous mode [ 70.740082][ T8533] debugfs: Directory 'hsr0' with parent '/' already present! [ 70.749349][ T8528] team0: Port device team_slave_1 added [ 70.757482][ T8519] 8021q: adding VLAN 0 to HW filter on device bond0 [ 70.765423][ T8524] netdevsim netdevsim3 netdevsim3: renamed from eth3 [ 70.933141][ T8528] device hsr_slave_0 entered promiscuous mode [ 70.970608][ T8528] device hsr_slave_1 entered promiscuous mode [ 71.010434][ T8528] debugfs: Directory 'hsr0' with parent '/' already present! [ 71.022810][ T8519] 8021q: adding VLAN 0 to HW filter on device team0 [ 71.036369][ T8521] 8021q: adding VLAN 0 to HW filter on device bond0 [ 71.048477][ T8533] netdevsim netdevsim5 netdevsim0: renamed from eth0 [ 176.089799][ C1] rcu: INFO: rcu_preempt detected stalls on CPUs/tasks: [ 176.096833][ C1] (detected by 1, t=10502 jiffies, g=7221, q=59) [ 176.103248][ C1] rcu: All QSes seen, last rcu_preempt kthread activity 10503 (4294954673-4294944170), jiffies_till_next_fqs=1, root ->qsmask 0x0 [ 176.116590][ C1] syz-executor.0 R running task 27896 8538 8516 0x0000400e [ 176.124483][ C1] Call Trace: [ 176.127761][ C1] [ 176.130617][ C1] sched_show_task+0x40f/0x560 [ 176.135380][ C1] rcu_sched_clock_irq+0x1861/0x1ad0 [ 176.140661][ C1] update_process_times+0x12d/0x180 [ 176.145848][ C1] tick_sched_timer+0x263/0x420 [ 176.150686][ C1] ? tick_setup_sched_timer+0x3d0/0x3d0 [ 176.156232][ C1] __hrtimer_run_queues+0x403/0x840 [ 176.161458][ C1] hrtimer_interrupt+0x38c/0xda0 [ 176.166553][ C1] ? debug_smp_processor_id+0x9/0x20 [ 176.171862][ C1] smp_apic_timer_interrupt+0x109/0x280 [ 176.177445][ C1] apic_timer_interrupt+0xf/0x20 [ 176.182405][ C1] [ 176.185370][ C1] RIP: 0010:__sanitizer_cov_trace_pc+0x31/0x50 [ 176.191526][ C1] Code: 0c 25 c0 1d 02 00 65 8b 15 b8 81 8b 7e f7 c2 00 01 1f 00 75 2c 8b 91 80 13 00 00 83 fa 02 75 21 48 8b 91 88 13 00 00 48 8b 32 <48> 8d 7e 01 8b 89 84 13 00 00 48 39 cf 73 08 48 89 44 f2 08 48 89 [ 176.211128][ C1] RSP: 0018:ffffc90002767840 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff13 [ 176.219533][ C1] RAX: ffffffff81486ea4 RBX: ffffea000293bdc0 RCX: ffff888089318040 [ 176.227628][ C1] RDX: ffffc90001de9000 RSI: 000000000003ffff RDI: 0000000000040000 [ 176.235646][ C1] RBP: ffffc90002767880 R08: dffffc0000000000 R09: fffffbfff12877ed [ 176.243644][ C1] R10: fffffbfff12877ed R11: 0000000000000000 R12: ffff888098b8d4a0 [ 176.251620][ C1] R13: dffffc0000000000 R14: 1ffff11013171a94 R15: ffff888088c656e8 [ 176.259707][ C1] ? free_thread_stack+0x124/0x590 [ 176.264817][ C1] ? free_thread_stack+0x124/0x590 [ 176.269927][ C1] put_task_stack+0xa3/0x130 [ 176.274531][ C1] finish_task_switch+0x3f1/0x550 [ 176.279581][ C1] __schedule+0x9a8/0xcc0 [ 176.283922][ C1] schedule+0x181/0x210 [ 176.288334][ C1] futex_wait_queue_me+0x2a3/0x4b0 [ 176.293457][ C1] futex_wait+0x252/0x770 [ 176.297809][ C1] do_futex+0x437/0x3d60 [ 176.302048][ C1] ? __lock_acquire+0xc75/0x1be0 [ 176.307117][ C1] ? __might_fault+0xf9/0x160 [ 176.311794][ C1] ? __might_fault+0xf9/0x160 [ 176.316469][ C1] ? check_preemption_disabled+0xb4/0x260 [ 176.322203][ C1] ? debug_smp_processor_id+0x9/0x20 [ 176.327511][ C1] __se_sys_futex+0x28c/0x360 [ 176.332195][ C1] ? prepare_exit_to_usermode+0x221/0x5b0 [ 176.337911][ C1] ? trace_irq_disable_rcuidle+0x23/0x1e0 [ 176.343618][ C1] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 176.349068][ C1] __x64_sys_futex+0xe5/0x100 [ 176.353742][ C1] do_syscall_64+0xf7/0x1c0 [ 176.358244][ C1] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 176.364147][ C1] RIP: 0033:0x45a679 [ 176.368044][ C1] Code: ad b6 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 7b b6 fb ff c3 66 2e 0f 1f 84 00 00 00 00 [ 176.388534][ C1] RSP: 002b:00007f6b85addcf8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca [ 176.396940][ C1] RAX: ffffffffffffffda RBX: 000000000075bf28 RCX: 000000000045a679 [ 176.404902][ C1] RDX: 0000000000000000 RSI: 0000000000000080 RDI: 000000000075bf28 [ 176.412892][ C1] RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000 [ 176.420865][ C1] R10: 0000000000000000 R11: 0000000000000246 R12: 000000000075bf2c [ 176.428830][ C1] R13: 00007ffff514c57f R14: 00007f6b85ade9c0 R15: 000000000075bf2c [ 176.436819][ C1] rcu: rcu_preempt kthread starved for 10536 jiffies! g7221 f0x2 RCU_GP_WAIT_FQS(5) ->state=0x0 ->cpu=0 [ 176.447911][ C1] rcu: RCU grace-period kthread stack dump: [ 176.453806][ C1] rcu_preempt R running task 29032 10 2 0x80004000 [ 176.461708][ C1] Call Trace: [ 176.465005][ C1] __schedule+0x9a0/0xcc0 [ 176.469336][ C1] schedule+0x181/0x210 [ 176.473496][ C1] schedule_timeout+0x14f/0x240 [ 176.478368][ C1] ? run_local_timers+0x120/0x120 [ 176.483480][ C1] rcu_gp_kthread+0xed8/0x1770 [ 176.488246][ C1] kthread+0x332/0x350 [ 176.492308][ C1] ? rcu_report_qs_rsp+0x140/0x140 [ 176.497412][ C1] ? kthread_blkcg+0xe0/0xe0 [ 176.502001][ C1] ret_from_fork+0x24/0x30