Warning: Permanently added '10.128.0.197' (ECDSA) to the list of known hosts. 2020/11/23 11:10:44 fuzzer started 2020/11/23 11:10:44 dialing manager at 10.128.0.105:43505 2020/11/23 11:10:44 syscalls: 3448 2020/11/23 11:10:44 code coverage: enabled 2020/11/23 11:10:44 comparison tracing: enabled 2020/11/23 11:10:44 extra coverage: enabled 2020/11/23 11:10:44 setuid sandbox: enabled 2020/11/23 11:10:44 namespace sandbox: enabled 2020/11/23 11:10:44 Android sandbox: /sys/fs/selinux/policy does not exist 2020/11/23 11:10:44 fault injection: enabled 2020/11/23 11:10:44 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled 2020/11/23 11:10:44 net packet injection: enabled 2020/11/23 11:10:44 net device setup: enabled 2020/11/23 11:10:44 concurrency sanitizer: enabled 2020/11/23 11:10:44 devlink PCI setup: PCI device 0000:00:10.0 is not available 2020/11/23 11:10:44 USB emulation: enabled 2020/11/23 11:10:44 hci packet injection: enabled 2020/11/23 11:10:44 wifi device emulation: enabled 2020/11/23 11:10:44 suppressing KCSAN reports in functions: 'expire_timers' 'ext4_free_inode' '__ext4_new_inode' 'blk_mq_rq_ctx_init' '__add_to_page_cache_locked' 11:10:50 executing program 0: r0 = socket$packet(0x11, 0x3, 0x300) r1 = bpf$PROG_LOAD(0x5, &(0x7f0000000080)={0x1, 0x5, &(0x7f0000000e80)=ANY=[@ANYBLOB="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"], &(0x7f0000000140)='GPL\x00'}, 0x48) setsockopt$sock_attach_bpf(r0, 0x1, 0x32, &(0x7f0000000000)=r1, 0x4) r2 = socket$kcm(0x10, 0x2, 0x10) sendmsg$kcm(r2, &(0x7f0000000000)={0x0, 0x0, &(0x7f0000000040)=[{&(0x7f00000000c0)='.\x00\x00\x00', 0x4}], 0x1}, 0x0) 11:10:50 executing program 1: r0 = socket$inet_mptcp(0x2, 0x1, 0x106) bind$inet(r0, &(0x7f0000000080)={0x2, 0x4e24, @multicast2}, 0x10) connect$inet(r0, &(0x7f00000000c0)={0x2, 0x4e24, @local}, 0x10) sendmsg$RDMA_NLDEV_CMD_STAT_DEL(0xffffffffffffffff, 0x0, 0x0) sendto$inet(r0, &(0x7f0000000100)="f6", 0xffffffe7, 0xc000, 0x0, 0x0) openat$cgroup_ro(0xffffffffffffff9c, 0x0, 0x7a05, 0x1700) getsockopt$TIPC_SRC_DROPPABLE(0xffffffffffffffff, 0x10f, 0x80, 0x0, 0x0) recvmmsg(r0, &(0x7f0000002d00)=[{{0x0, 0x7a1d, &(0x7f00000003c0)=[{&(0x7f00000001c0)=""/155, 0x9b}], 0x1, 0x0, 0x15000000, 0x1000000}}, {{0x0, 0x0, &(0x7f0000000440)=[{&(0x7f0000000640)=""/198, 0xff965}], 0x1}}], 0x2, 0x0, 0x0) 11:10:50 executing program 2: r0 = openat$kvm(0xffffffffffffff9c, &(0x7f0000000000)='/dev/kvm\x00', 0x0, 0x0) r1 = ioctl$KVM_CREATE_VM(r0, 0xae01, 0x0) add_key$keyring(&(0x7f0000000040)='keyring\x00', 0x0, 0x0, 0x0, 0xffffffffffffffff) ioctl$KVM_SET_USER_MEMORY_REGION(r1, 0x4020ae46, &(0x7f0000000740)={0x3, 0x2, 0xf000, 0x1000, &(0x7f0000000000/0x1000)=nil}) r2 = ioctl$KVM_CREATE_VCPU(r1, 0xae41, 0x0) ioctl$sock_netdev_private(0xffffffffffffffff, 0x0, &(0x7f0000000080)="282526185e3dcc1d9e08fe6651") ioctl$KVM_SET_USER_MEMORY_REGION(r1, 0x4020ae46, &(0x7f0000000100)={0x0, 0x0, 0x0, 0x2000, &(0x7f0000000000/0x2000)=nil}) ioctl$KVM_SET_REGS(r2, 0x4090ae82, &(0x7f0000000200)={[0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0xfb]}) ioctl$KVM_RUN(r2, 0xae80, 0x0) ioctl$KVM_RUN(r2, 0xae80, 0x0) 11:10:50 executing program 3: clone3(&(0x7f0000000340)={0x42000000, 0x0, &(0x7f0000000040), 0x0, {}, 0x0, 0x0, 0x0, 0x0}, 0x58) 11:10:50 executing program 4: unshare(0x24020400) r0 = memfd_create(&(0x7f0000000040)='\xb2w\x9f\v\x170\xd1!\x16\x11O\xdd\xdfk(F\x99\xdf', 0x3) fcntl$addseals(r0, 0x409, 0x8) 11:10:51 executing program 5: mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./file0\x00', 0x0) mount(0x0, &(0x7f0000000080)='./file0\x00', &(0x7f0000000040)='cpuset\x00', 0x0, 0x0) setxattr$trusted_overlay_redirect(&(0x7f0000000100)='./file0\x00', &(0x7f0000000140)='trusted.overlay.redirect\x00', 0x0, 0x0, 0x0) syzkaller login: [ 36.438821][ T1] ================================================================== [ 36.447017][ T1] BUG: KCSAN: data-race in cgroup_procs_write_start / handle_mm_fault [ 36.455150][ T1] [ 36.457471][ T1] write to 0xffff8881024eb4c0 of 2 bytes by task 8470 on cpu 0: [ 36.465088][ T1] handle_mm_fault+0x1a7/0x1770 [ 36.470018][ T1] do_user_addr_fault+0x33e/0x730 [ 36.475030][ T1] exc_page_fault+0x91/0x290 [ 36.479593][ T1] asm_exc_page_fault+0x1e/0x30 [ 36.484411][ T1] [ 36.486726][ T1] read to 0xffff8881024eb4c0 of 2 bytes by task 1 on cpu 1: [ 36.493987][ T1] cgroup_procs_write_start+0x13c/0x270 [ 36.499505][ T1] __cgroup1_procs_write+0x5d/0x220 [ 36.504675][ T1] cgroup1_procs_write+0x26/0x30 [ 36.509608][ T1] cgroup_file_write+0x173/0x2f0 [ 36.514834][ T1] kernfs_fop_write+0x207/0x2c0 [ 36.519675][ T1] vfs_write+0x21a/0x7c0 [ 36.523896][ T1] ksys_write+0xce/0x180 [ 36.528119][ T1] __x64_sys_write+0x3e/0x50 [ 36.532684][ T1] do_syscall_64+0x39/0x80 [ 36.537083][ T1] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 36.542940][ T1] [ 36.545242][ T1] Reported by Kernel Concurrency Sanitizer on: [ 36.551386][ T1] CPU: 1 PID: 1 Comm: systemd Not tainted 5.10.0-rc5-syzkaller #0 [ 36.559158][ T1] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 36.569556][ T1] ================================================================== [ 36.577603][ T1] Kernel panic - not syncing: panic_on_warn set ... [ 36.584174][ T1] CPU: 1 PID: 1 Comm: systemd Not tainted 5.10.0-rc5-syzkaller #0 [ 36.591947][ T1] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 36.601976][ T1] Call Trace: [ 36.605253][ T1] dump_stack+0x116/0x15d [ 36.609568][ T1] panic+0x1e7/0x5fa [ 36.613476][ T1] ? vprintk_emit+0x2f2/0x370 [ 36.618134][ T1] kcsan_report+0x67b/0x680 [ 36.622611][ T1] ? kcsan_setup_watchpoint+0x46a/0x4d0 [ 36.628174][ T1] ? cgroup_procs_write_start+0x13c/0x270 [ 36.633872][ T1] ? __cgroup1_procs_write+0x5d/0x220 [ 36.639229][ T1] ? cgroup1_procs_write+0x26/0x30 [ 36.644314][ T1] ? cgroup_file_write+0x173/0x2f0 [ 36.649399][ T1] ? kernfs_fop_write+0x207/0x2c0 [ 36.654415][ T1] ? vfs_write+0x21a/0x7c0 [ 36.658811][ T1] ? ksys_write+0xce/0x180 [ 36.663215][ T1] ? __x64_sys_write+0x3e/0x50 [ 36.667952][ T1] ? do_syscall_64+0x39/0x80 [ 36.672529][ T1] ? entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 36.678590][ T1] kcsan_setup_watchpoint+0x46a/0x4d0 [ 36.683940][ T1] ? idr_find+0x28/0x30 [ 36.688087][ T1] cgroup_procs_write_start+0x13c/0x270 [ 36.693606][ T1] __cgroup1_procs_write+0x5d/0x220 [ 36.698777][ T1] cgroup1_procs_write+0x26/0x30 [ 36.703686][ T1] ? cgroup_pidlist_stop+0xa0/0xa0 [ 36.708770][ T1] cgroup_file_write+0x173/0x2f0 [ 36.713690][ T1] ? cgroup_seqfile_stop+0x70/0x70 [ 36.718783][ T1] kernfs_fop_write+0x207/0x2c0 [ 36.723618][ T1] ? kernfs_fop_read+0x2f0/0x2f0 [ 36.728539][ T1] vfs_write+0x21a/0x7c0 [ 36.732762][ T1] ? __fget_light+0xd0/0x260 [ 36.737328][ T1] ksys_write+0xce/0x180 [ 36.741578][ T1] __x64_sys_write+0x3e/0x50 [ 36.746163][ T1] do_syscall_64+0x39/0x80 [ 36.750557][ T1] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 36.756462][ T1] RIP: 0033:0x7fbcce6ce98d [ 36.760851][ T1] Code: 2d 2c 00 00 75 10 b8 01 00 00 00 0f 05 48 3d 01 f0 ff ff 73 31 c3 48 83 ec 08 e8 7e 9b 01 00 48 89 04 24 b8 01 00 00 00 0f 05 <48> 8b 3c 24 48 89 c2 e8 c7 9b 01 00 48 89 d0 48 83 c4 08 48 3d 01 [ 36.780439][ T1] RSP: 002b:00007ffeb1e85050 EFLAGS: 00000293 ORIG_RAX: 0000000000000001 [ 36.788826][ T1] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007fbcce6ce98d [ 36.796791][ T1] RDX: 0000000000000005 RSI: 00005611018d2290 RDI: 0000000000000028 [ 36.804750][ T1] RBP: 00005611018d2290 R08: 00005611018d2010 R09: 00007fbcd0104500 [ 36.812695][ T1] R10: 00007fbcce98cbd8 R11: 0000000000000293 R12: 0000000000000005 [ 36.820645][ T1] R13: 0000000000000001 R14: 00005611018d1f30 R15: 0000000000000005 [ 36.829186][ T1] Kernel Offset: disabled [ 36.833520][ T1] Rebooting in 86400 seconds..