./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor3111214751 <...> forked to background, child pid 3179 no interfaces have a carrier [ 25.973756][ T3180] 8021q: adding VLAN 0 to HW filter on device bond0 [ 25.985016][ T3180] eql: remember to turn off Van-Jacobson compression on your slave devices Starting sshd: OK syzkaller Warning: Permanently added '10.128.1.60' (ECDSA) to the list of known hosts. execve("./syz-executor3111214751", ["./syz-executor3111214751"], 0x7ffe03f96dd0 /* 10 vars */) = 0 brk(NULL) = 0x555556f79000 brk(0x555556f79c40) = 0x555556f79c40 arch_prctl(ARCH_SET_FS, 0x555556f79300) = 0 uname({sysname="Linux", nodename="syzkaller", ...}) = 0 readlink("/proc/self/exe", "/root/syz-executor3111214751", 4096) = 28 brk(0x555556f9ac40) = 0x555556f9ac40 brk(0x555556f9b000) = 0x555556f9b000 mprotect(0x7fadafc93000, 16384, PROT_READ) = 0 mmap(0x1ffff000, 4096, PROT_NONE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x1ffff000 mmap(0x20000000, 16777216, PROT_READ|PROT_WRITE|PROT_EXEC, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x20000000 mmap(0x21000000, 4096, PROT_NONE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x21000000 mkdir("/syzcgroup", 0777) = 0 mkdir("/syzcgroup/unified", 0777) = 0 mount("none", "/syzcgroup/unified", "cgroup2", 0, NULL) = 0 chmod("/syzcgroup/unified", 0777) = 0 openat(AT_FDCWD, "/syzcgroup/unified/cgroup.subtree_control", O_WRONLY) = 3 write(3, "+cpu", 4) = 4 write(3, "+memory", 7) = 7 write(3, "+io", 3) = 3 write(3, "+pids", 5) = 5 close(3) = 0 mkdir("/syzcgroup/net", 0777) = 0 mount("none", "/syzcgroup/net", "cgroup", 0, "net") = -1 EINVAL (Invalid argument) mount("none", "/syzcgroup/net", "cgroup", 0, "net_prio") = 0 umount2("/syzcgroup/net", 0) = 0 mount("none", "/syzcgroup/net", "cgroup", 0, "devices") = 0 umount2("/syzcgroup/net", 0) = 0 mount("none", "/syzcgroup/net", "cgroup", 0, "blkio") = 0 umount2("/syzcgroup/net", 0) = 0 mount("none", "/syzcgroup/net", "cgroup", 0, "freezer") = 0 umount2("/syzcgroup/net", 0) = 0 syzkaller login: [ 49.592392][ T3600] cgroup: Unknown subsys name 'net' mount("none", "/syzcgroup/net", "cgroup", 0, "net_prio,devices,blkio,freezer") = ? ERESTARTNOINTR (To be restarted) mount("none", "/syzcgroup/net", "cgroup", 0, "net_prio,devices,blkio,freezer") = ? ERESTARTNOINTR (To be restarted) mount("none", "/syzcgroup/net", "cgroup", 0, "net_prio,devices,blkio,freezer") = ? ERESTARTNOINTR (To be restarted) mount("none", "/syzcgroup/net", "cgroup", 0, "net_prio,devices,blkio,freezer") = ? ERESTARTNOINTR (To be restarted) mount("none", "/syzcgroup/net", "cgroup", 0, "net_prio,devices,blkio,freezer") = 0 chmod("/syzcgroup/net", 0777) = 0 mkdir("/syzcgroup/cpu", 0777) = 0 mount("none", "/syzcgroup/cpu", "cgroup", 0, "cpuset") = 0 umount2("/syzcgroup/cpu", 0) = 0 mount("none", "/syzcgroup/cpu", "cgroup", 0, "cpuacct") = 0 umount2("/syzcgroup/cpu", 0) = 0 mount("none", "/syzcgroup/cpu", "cgroup", 0, "hugetlb") = 0 umount2("/syzcgroup/cpu", 0) = 0 mount("none", "/syzcgroup/cpu", "cgroup", 0, "rlimit") = -1 EINVAL (Invalid argument) mount("none", "/syzcgroup/cpu", "cgroup", 0, "cpuset,cpuacct,hugetlb") = ? ERESTARTNOINTR (To be restarted) mount("none", "/syzcgroup/cpu", "cgroup", 0, "cpuset,cpuacct,hugetlb") = ? ERESTARTNOINTR (To be restarted) [ 49.740019][ T3600] cgroup: Unknown subsys name 'rlimit' mount("none", "/syzcgroup/cpu", "cgroup", 0, "cpuset,cpuacct,hugetlb") = ? ERESTARTNOINTR (To be restarted) mount("none", "/syzcgroup/cpu", "cgroup", 0, "cpuset,cpuacct,hugetlb") = 0 chmod("/syzcgroup/cpu", 0777) = 0 openat(AT_FDCWD, "/syzcgroup/cpu/cgroup.clone_children", O_WRONLY|O_CLOEXEC) = 3 write(3, "1", 1) = 1 close(3) = 0 openat(AT_FDCWD, "/syzcgroup/cpu/cpuset.memory_pressure_enabled", O_WRONLY|O_CLOEXEC) = 3 write(3, "1", 1) = 1 close(3) = 0 openat(AT_FDCWD, "/sys/kernel/debug/failslab/ignore-gfp-wait", O_WRONLY|O_CLOEXEC) = 3 write(3, "N", 1) = 1 close(3) = 0 openat(AT_FDCWD, "/sys/kernel/debug/fail_futex/ignore-private", O_WRONLY|O_CLOEXEC) = 3 write(3, "N", 1) = 1 close(3) = 0 openat(AT_FDCWD, "/sys/kernel/debug/fail_page_alloc/ignore-gfp-highmem", O_WRONLY|O_CLOEXEC) = 3 write(3, "N", 1) = 1 close(3) = 0 openat(AT_FDCWD, "/sys/kernel/debug/fail_page_alloc/ignore-gfp-wait", O_WRONLY|O_CLOEXEC) = 3 write(3, "N", 1) = 1 close(3) = 0 openat(AT_FDCWD, "/sys/kernel/debug/fail_page_alloc/min-order", O_WRONLY|O_CLOEXEC) = 3 write(3, "0", 1) = 1 close(3) = 0 getpid() = 3600 mkdir("./syzkaller.ehe1tp", 0700) = 0 chmod("./syzkaller.ehe1tp", 0777) = 0 chdir("./syzkaller.ehe1tp") = 0 unshare(CLONE_NEWPID) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556f795d0) = 3602 ./strace-static-x86_64: Process 3602 attached [pid 3602] mount(NULL, "/sys/fs/fuse/connections", "fusectl", 0, NULL) = -1 EBUSY (Device or resource busy) [pid 3602] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3602] setsid() = 1 [pid 3602] prlimit64(0, RLIMIT_AS, {rlim_cur=204800*1024, rlim_max=204800*1024}, NULL) = 0 [pid 3602] prlimit64(0, RLIMIT_MEMLOCK, {rlim_cur=32768*1024, rlim_max=32768*1024}, NULL) = 0 [pid 3602] prlimit64(0, RLIMIT_FSIZE, {rlim_cur=139264*1024, rlim_max=139264*1024}, NULL) = 0 [pid 3602] prlimit64(0, RLIMIT_STACK, {rlim_cur=1024*1024, rlim_max=1024*1024}, NULL) = 0 [pid 3602] prlimit64(0, RLIMIT_CORE, {rlim_cur=0, rlim_max=0}, NULL) = 0 [pid 3602] prlimit64(0, RLIMIT_NOFILE, {rlim_cur=256, rlim_max=256}, NULL) = 0 [pid 3602] unshare(CLONE_NEWNS) = 0 [pid 3602] mount(NULL, "/", NULL, MS_REC|MS_PRIVATE, NULL) = 0 [pid 3602] unshare(CLONE_NEWIPC) = 0 [pid 3602] unshare(CLONE_NEWCGROUP) = 0 [pid 3602] unshare(CLONE_NEWUTS) = 0 [pid 3602] unshare(CLONE_SYSVSEM) = 0 [pid 3602] openat(AT_FDCWD, "/proc/sys/kernel/shmmax", O_WRONLY|O_CLOEXEC) = 3 [pid 3602] write(3, "16777216", 8) = 8 [pid 3602] close(3) = 0 [pid 3602] openat(AT_FDCWD, "/proc/sys/kernel/shmall", O_WRONLY|O_CLOEXEC) = 3 [pid 3602] write(3, "536870912", 9) = 9 [pid 3602] close(3) = 0 [pid 3602] openat(AT_FDCWD, "/proc/sys/kernel/shmmni", O_WRONLY|O_CLOEXEC) = 3 [pid 3602] write(3, "1024", 4) = 4 [pid 3602] close(3) = 0 [pid 3602] openat(AT_FDCWD, "/proc/sys/kernel/msgmax", O_WRONLY|O_CLOEXEC) = 3 [pid 3602] write(3, "8192", 4) = 4 [pid 3602] close(3) = 0 [pid 3602] openat(AT_FDCWD, "/proc/sys/kernel/msgmni", O_WRONLY|O_CLOEXEC) = 3 [pid 3602] write(3, "1024", 4) = 4 [pid 3602] close(3) = 0 [pid 3602] openat(AT_FDCWD, "/proc/sys/kernel/msgmnb", O_WRONLY|O_CLOEXEC) = 3 [pid 3602] write(3, "1024", 4) = 4 [pid 3602] close(3) = 0 [pid 3602] openat(AT_FDCWD, "/proc/sys/kernel/sem", O_WRONLY|O_CLOEXEC) = 3 [pid 3602] write(3, "1024 1048576 500 1024", 21) = 21 [pid 3602] close(3) = 0 [pid 3602] getpid() = 1 [pid 3602] capget({version=_LINUX_CAPABILITY_VERSION_3, pid=1}, {effective=1< 0b 42 80 7c 25 00 00 0f 85 4e ff ff ff e9 51 ff ff ff 89 f9 80 [ 50.021720][ T3603] RSP: 0018:ffffc90002fafca8 EFLAGS: 00010293 [ 50.027875][ T3603] RAX: ffffffff81a9df07 RBX: ffff88801cc68a68 RCX: ffff88801c0d8000 [ 50.035860][ T3603] RDX: 0000000000000000 RSI: 00000000fffffff4 RDI: 0000000000000000 [ 50.043893][ T3603] RBP: 1ffff1100398d14d R08: ffffffff81a9de4d R09: 0000000000000dc0 [ 50.052075][ T3603] R10: fffffbfff1981067 R11: 1ffffffff1981066 R12: dffffc0000000000 [ 50.060089][ T3603] R13: ffffffff8a969260 R14: 00000000fffffff4 R15: ffff888074d50000 [ 50.068111][ T3603] FS: 0000555556f79300(0000) GS:ffff8880b9b00000(0000) knlGS:0000000000000000 [ 50.077060][ T3603] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 50.083691][ T3603] CR2: 0000000000c46408 CR3: 000000007474e000 CR4: 00000000003506e0 [ 50.091720][ T3603] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 50.099766][ T3603] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 50.107778][ T3603] Call Trace: [ 50.111060][ T3603] [ 50.114022][ T3603] ? local_lock_release+0x170/0x170 [ 50.119271][ T3603] bpf_link_put+0x21d/0x2b0 [ 50.123792][ T3603] bpf_link_release+0x37/0x40 [ 50.128521][ T3603] __fput+0x3b9/0x820 [ 50.132534][ T3603] task_work_run+0x146/0x1c0 [ 50.137140][ T3603] ptrace_notify+0x29a/0x340 [ 50.141797][ T3603] ? do_notify_parent+0xeb0/0xeb0 [ 50.146844][ T3603] ? fput+0x155/0x1a0 [ 50.150883][ T3603] ? filp_close+0x10a/0x150 [ 50.155395][ T3603] ? do_dup2+0x388/0x410 [ 50.159681][ T3603] syscall_exit_work+0x8c/0xe0 [ 50.164457][ T3603] syscall_exit_to_user_mode_prepare+0x6b/0xc0 [ 50.170677][ T3603] syscall_exit_to_user_mode+0xa/0x60 [ 50.176077][ T3603] entry_SYSCALL_64_after_hwframe+0x63/0xcd [ 50.182007][ T3603] RIP: 0033:0x7fadafc25239 [ 50.186431][ T3603] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 51 15 00 00 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 73 01 c3 48 c7 c1 c0 ff ff ff f7 d8 64 89 01 48 [ 50.206076][ T3603] RSP: 002b:00007fffed85eb38 EFLAGS: 00000246 ORIG_RAX: 0000000000000021 [ 50.214537][ T3603] RAX: 0000000000000005 RBX: 0000000000000003 RCX: 00007fadafc25239 [ 50.222548][ T3603] RDX: 0000000000000b60 RSI: 0000000000000005 RDI: 0000000000000003 [ 50.230588][ T3603] RBP: 00007fffed85eb60 R08: 0000000000000001 R09: 00007fffed85eb70 [ 50.238652][ T3603] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000009 [ 50.246646][ T3603] R13: 00007fffed85eb80 R14: 00007fffed85ebc0 R15: 0000000000000000 [ 50.254698][ T3603] [ 50.257748][ T3603] Kernel panic - not syncing: panic_on_warn set ... [ 50.264328][ T3603] CPU: 1 PID: 3603 Comm: syz-executor311 Not tainted 5.19.0-syzkaller-02972-g200e340f2196 #0 [ 50.274474][ T3603] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/22/2022 [ 50.284539][ T3603] Call Trace: [ 50.287847][ T3603] [ 50.291654][ T3603] dump_stack_lvl+0x1e3/0x2cb [ 50.296343][ T3603] ? io_notif_register+0x5e7/0x5e7 [ 50.301466][ T3603] ? panic+0x76e/0x76e [ 50.305544][ T3603] ? vscnprintf+0x59/0x80 [ 50.309875][ T3603] ? bpf_cgroup_link_release+0x150/0x1b0 [ 50.315529][ T3603] panic+0x312/0x76e [ 50.319430][ T3603] ? __warn+0x131/0x220 [ 50.323577][ T3603] ? fb_is_primary_device+0xcc/0xcc [ 50.328789][ T3603] ? bpf_cgroup_link_release+0x157/0x1b0 [ 50.334433][ T3603] __warn+0x1fa/0x220 [ 50.338407][ T3603] ? bpf_cgroup_link_release+0x157/0x1b0 [ 50.344032][ T3603] report_bug+0x1b3/0x2d0 [ 50.348356][ T3603] handle_bug+0x3d/0x70 [ 50.352513][ T3603] exc_invalid_op+0x16/0x40 [ 50.357035][ T3603] asm_exc_invalid_op+0x16/0x20 [ 50.361879][ T3603] RIP: 0010:bpf_cgroup_link_release+0x157/0x1b0 [ 50.368120][ T3603] Code: 41 de ff 48 c7 c7 c0 68 b4 8c 5b 41 5c 41 5e 41 5f 5d e9 5c 30 8a 08 e8 b7 41 de ff 5b 41 5c 41 5e 41 5f 5d c3 e8 a9 41 de ff <0f> 0b 42 80 7c 25 00 00 0f 85 4e ff ff ff e9 51 ff ff ff 89 f9 80 [ 50.387715][ T3603] RSP: 0018:ffffc90002fafca8 EFLAGS: 00010293 [ 50.393778][ T3603] RAX: ffffffff81a9df07 RBX: ffff88801cc68a68 RCX: ffff88801c0d8000 [ 50.401740][ T3603] RDX: 0000000000000000 RSI: 00000000fffffff4 RDI: 0000000000000000 [ 50.409704][ T3603] RBP: 1ffff1100398d14d R08: ffffffff81a9de4d R09: 0000000000000dc0 [ 50.417670][ T3603] R10: fffffbfff1981067 R11: 1ffffffff1981066 R12: dffffc0000000000 [ 50.425633][ T3603] R13: ffffffff8a969260 R14: 00000000fffffff4 R15: ffff888074d50000 [ 50.433604][ T3603] ? bpf_cgroup_link_release+0x9d/0x1b0 [ 50.439162][ T3603] ? bpf_cgroup_link_release+0x157/0x1b0 [ 50.444795][ T3603] ? bpf_cgroup_link_release+0x157/0x1b0 [ 50.450448][ T3603] ? local_lock_release+0x170/0x170 [ 50.455637][ T3603] bpf_link_put+0x21d/0x2b0 [ 50.460136][ T3603] bpf_link_release+0x37/0x40 [ 50.464804][ T3603] __fput+0x3b9/0x820 [ 50.468785][ T3603] task_work_run+0x146/0x1c0 [ 50.473374][ T3603] ptrace_notify+0x29a/0x340 [ 50.477970][ T3603] ? do_notify_parent+0xeb0/0xeb0 [ 50.482985][ T3603] ? fput+0x155/0x1a0 [ 50.486972][ T3603] ? filp_close+0x10a/0x150 [ 50.491473][ T3603] ? do_dup2+0x388/0x410 [ 50.495714][ T3603] syscall_exit_work+0x8c/0xe0 [ 50.500474][ T3603] syscall_exit_to_user_mode_prepare+0x6b/0xc0 [ 50.506624][ T3603] syscall_exit_to_user_mode+0xa/0x60 [ 50.511992][ T3603] entry_SYSCALL_64_after_hwframe+0x63/0xcd [ 50.517887][ T3603] RIP: 0033:0x7fadafc25239 [ 50.522382][ T3603] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 51 15 00 00 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 73 01 c3 48 c7 c1 c0 ff ff ff f7 d8 64 89 01 48 [ 50.541992][ T3603] RSP: 002b:00007fffed85eb38 EFLAGS: 00000246 ORIG_RAX: 0000000000000021 [ 50.550419][ T3603] RAX: 0000000000000005 RBX: 0000000000000003 RCX: 00007fadafc25239 [ 50.558398][ T3603] RDX: 0000000000000b60 RSI: 0000000000000005 RDI: 0000000000000003 [ 50.566448][ T3603] RBP: 00007fffed85eb60 R08: 0000000000000001 R09: 00007fffed85eb70 [ 50.574414][ T3603] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000009 [ 50.582376][ T3603] R13: 00007fffed85eb80 R14: 00007fffed85ebc0 R15: 0000000000000000 [ 50.590356][ T3603] [ 50.593649][ T3603] Kernel Offset: disabled [ 50.598052][ T3603] Rebooting in 86400 seconds..