./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor3462983415 <...> forked to background, child pid 4746 no interfaces have a carrier [ 52.718267][ T4747] 8021q: adding VLAN 0 to HW filter on device bond0 [ 52.755628][ T4747] eql: remember to turn off Van-Jacobson compression on your slave devices Starting sshd: OK syzkaller Warning: Permanently added '10.128.0.249' (ED25519) to the list of known hosts. execve("./syz-executor3462983415", ["./syz-executor3462983415"], 0x7ffd394da4d0 /* 10 vars */) = 0 brk(NULL) = 0x55556b19b000 brk(0x55556b19bd00) = 0x55556b19bd00 arch_prctl(ARCH_SET_FS, 0x55556b19b380) = 0 set_tid_address(0x55556b19b650) = 5081 set_robust_list(0x55556b19b660, 24) = 0 rseq(0x55556b19bca0, 0x20, 0, 0x53053053) = 0 prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlink("/proc/self/exe", "/root/syz-executor3462983415", 4096) = 28 getrandom("\x32\xec\xc4\x0a\x49\x41\x6c\xee", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x55556b19bd00 brk(0x55556b1bcd00) = 0x55556b1bcd00 brk(0x55556b1bd000) = 0x55556b1bd000 mprotect(0x7f3c1c8c0000, 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, "+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: [ 83.458309][ T5081] 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") = ? 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, "memory") = 0 umount2("/syzcgroup/cpu", 0) = 0 mount("none", "/syzcgroup/cpu", "cgroup", 0, "cpuset,cpuacct,hugetlb,memory") = ? ERESTARTNOINTR (To be restarted) [ 83.675726][ T5081] cgroup: Unknown subsys name 'rlimit' mount("none", "/syzcgroup/cpu", "cgroup", 0, "cpuset,cpuacct,hugetlb,memory") = ? ERESTARTNOINTR (To be restarted) mount("none", "/syzcgroup/cpu", "cgroup", 0, "cpuset,cpuacct,hugetlb,memory") = ? ERESTARTNOINTR (To be restarted) mount("none", "/syzcgroup/cpu", "cgroup", 0, "cpuset,cpuacct,hugetlb,memory") = 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 mkdir("./syzkaller.OLEvbP", 0700) = 0 chmod("./syzkaller.OLEvbP", 0777) = 0 chdir("./syzkaller.OLEvbP") = 0 unshare(CLONE_NEWPID) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5082 attached [pid 5082] set_robust_list(0x55556b19b660, 24 [pid 5081] <... clone resumed>, child_tidptr=0x55556b19b650) = 5082 [pid 5082] <... set_robust_list resumed>) = 0 [pid 5082] mount(NULL, "/sys/fs/fuse/connections", "fusectl", 0, NULL) = -1 EBUSY (Device or resource busy) [pid 5082] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5082] setsid() = 1 [pid 5082] prlimit64(0, RLIMIT_AS, {rlim_cur=204800*1024, rlim_max=204800*1024}, NULL) = 0 [pid 5082] prlimit64(0, RLIMIT_MEMLOCK, {rlim_cur=32768*1024, rlim_max=32768*1024}, NULL) = 0 [pid 5082] prlimit64(0, RLIMIT_FSIZE, {rlim_cur=139264*1024, rlim_max=139264*1024}, NULL) = 0 [pid 5082] prlimit64(0, RLIMIT_STACK, {rlim_cur=1024*1024, rlim_max=1024*1024}, NULL) = 0 [pid 5082] prlimit64(0, RLIMIT_CORE, {rlim_cur=131072*1024, rlim_max=131072*1024}, NULL) = 0 [pid 5082] prlimit64(0, RLIMIT_NOFILE, {rlim_cur=256, rlim_max=256}, NULL) = 0 [pid 5082] unshare(CLONE_NEWNS) = 0 [pid 5082] mount(NULL, "/", NULL, MS_REC|MS_PRIVATE, NULL) = 0 [pid 5082] unshare(CLONE_NEWIPC) = 0 [pid 5082] unshare(CLONE_NEWCGROUP) = 0 [pid 5082] unshare(CLONE_NEWUTS) = 0 [pid 5082] unshare(CLONE_SYSVSEM) = 0 [pid 5082] openat(AT_FDCWD, "/proc/sys/kernel/shmmax", O_WRONLY|O_CLOEXEC) = 3 [pid 5082] write(3, "16777216", 8) = 8 [pid 5082] close(3) = 0 [pid 5082] openat(AT_FDCWD, "/proc/sys/kernel/shmall", O_WRONLY|O_CLOEXEC) = 3 [pid 5082] write(3, "536870912", 9) = 9 [pid 5082] close(3) = 0 [pid 5082] openat(AT_FDCWD, "/proc/sys/kernel/shmmni", O_WRONLY|O_CLOEXEC) = 3 [pid 5082] write(3, "1024", 4) = 4 [pid 5082] close(3) = 0 [pid 5082] openat(AT_FDCWD, "/proc/sys/kernel/msgmax", O_WRONLY|O_CLOEXEC) = 3 [pid 5082] write(3, "8192", 4) = 4 [pid 5082] close(3) = 0 [pid 5082] openat(AT_FDCWD, "/proc/sys/kernel/msgmni", O_WRONLY|O_CLOEXEC) = 3 [pid 5082] write(3, "1024", 4) = 4 [pid 5082] close(3) = 0 [pid 5082] openat(AT_FDCWD, "/proc/sys/kernel/msgmnb", O_WRONLY|O_CLOEXEC) = 3 [pid 5082] write(3, "1024", 4) = 4 [pid 5082] close(3) = 0 [pid 5082] openat(AT_FDCWD, "/proc/sys/kernel/sem", O_WRONLY|O_CLOEXEC) = 3 [pid 5082] write(3, "1024 1048576 500 1024", 21) = 21 [pid 5082] close(3) = 0 [pid 5082] getpid() = 1 [pid 5082] capget({version=_LINUX_CAPABILITY_VERSION_3, pid=1}, {effective=1<) = 0 [pid 5082] umount2("./0", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5082] openat(AT_FDCWD, "./0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5082] newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=140, ...}, AT_EMPTY_PATH) = 0 [pid 5082] getdents64(3, 0x55556b19c6f0 /* 7 entries */, 32768) = 208 [pid 5082] umount2("./0/cgroup", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5082] newfstatat(AT_FDCWD, "./0/cgroup", {st_mode=S_IFLNK|0777, st_size=23, ...}, AT_SYMLINK_NOFOLLOW) = 0 [ 84.873263][ T5085] syz-executor346 (5085) used greatest stack depth: 17424 bytes left [pid 5082] unlink("./0/cgroup") = 0 [pid 5082] umount2("./0/cgroup.cpu", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5082] newfstatat(AT_FDCWD, "./0/cgroup.cpu", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5082] unlink("./0/cgroup.cpu") = 0 [pid 5082] umount2("./0/cgroup.net", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5082] newfstatat(AT_FDCWD, "./0/cgroup.net", {st_mode=S_IFLNK|0777, st_size=19, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5082] unlink("./0/cgroup.net") = 0 [pid 5082] umount2("./0/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5082] newfstatat(AT_FDCWD, "./0/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 [pid 5082] unlink("./0/binderfs") = 0 [ 85.019360][ T5082] Oops: general protection fault, probably for non-canonical address 0xdffffc0000000001: 0000 [#1] PREEMPT SMP KASAN PTI [ 85.031996][ T5082] KASAN: null-ptr-deref in range [0x0000000000000008-0x000000000000000f] [ 85.040432][ T5082] CPU: 1 PID: 5082 Comm: syz-executor346 Not tainted 6.10.0-rc7-syzkaller-00141-g43db1e03c086 #0 [ 85.050958][ T5082] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/07/2024 [ 85.061043][ T5082] RIP: 0010:list_lru_add+0x1b1/0x390 [ 85.066387][ T5082] Code: 89 ef e8 e2 06 1c 00 48 8b 45 00 48 8b 4c 24 30 48 8d 6c 08 40 4c 8d 6d 08 4d 89 ec 49 c1 ec 03 48 b8 00 00 00 00 00 fc ff df <41> 80 3c 04 00 74 08 4c 89 ef e8 b0 06 1c 00 4c 8b 7d 08 4c 89 f7 [ 85.086024][ T5082] RSP: 0018:ffffc9000346fa78 EFLAGS: 00010202 [ 85.092117][ T5082] RAX: dffffc0000000000 RBX: 1ffff1100f661037 RCX: 0000000000000000 [ 85.100096][ T5082] RDX: 0000000000000003 RSI: ffffffff8bcaccc0 RDI: ffffffff8c1f54c0 [ 85.108090][ T5082] RBP: 0000000000000000 R08: ffffffff8fac686f R09: 1ffffffff1f58d0d [ 85.116080][ T5082] R10: dffffc0000000000 R11: fffffbfff1f58d0e R12: 0000000000000001 [ 85.124068][ T5082] R13: 0000000000000008 R14: ffff88807b3081b8 R15: 0000000000000000 [ 85.132049][ T5082] FS: 000055556b19b380(0000) GS:ffff8880b9500000(0000) knlGS:0000000000000000 [ 85.140987][ T5082] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 85.147589][ T5082] CR2: 000055556b1a46f8 CR3: 000000007911c000 CR4: 00000000003506f0 [ 85.155575][ T5082] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 85.163551][ T5082] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 85.171530][ T5082] Call Trace: [ 85.174826][ T5082] [ 85.177770][ T5082] ? __die_body+0x88/0xe0 [ 85.182145][ T5082] ? die_addr+0x108/0x140 [ 85.186490][ T5082] ? exc_general_protection+0x3dd/0x5d0 [ 85.192167][ T5082] ? xa_load+0x147/0x350 [ 85.196501][ T5082] ? asm_exc_general_protection+0x26/0x30 [ 85.202326][ T5082] ? list_lru_add+0x1b1/0x390 [ 85.207013][ T5082] ? list_lru_add+0x151/0x390 [ 85.211717][ T5082] iput+0x87a/0x930 [ 85.215607][ T5082] __dentry_kill+0x20d/0x630 [ 85.220237][ T5082] ? dput+0x37/0x2b0 [ 85.224146][ T5082] dput+0x19f/0x2b0 [ 85.227966][ T5082] shrink_dcache_for_umount+0x7d/0x130 [ 85.233442][ T5082] generic_shutdown_super+0x6a/0x2d0 [ 85.238768][ T5082] bch2_kill_sb+0x41/0x50 [ 85.243170][ T5082] deactivate_locked_super+0xc4/0x130 [ 85.248562][ T5082] cleanup_mnt+0x41f/0x4b0 [ 85.252992][ T5082] ? lockdep_hardirqs_on+0x99/0x150 [ 85.258245][ T5082] task_work_run+0x24f/0x310 [ 85.262879][ T5082] ? __pfx_task_work_run+0x10/0x10 [ 85.268001][ T5082] ? path_umount+0x284/0xf70 [ 85.272606][ T5082] ptrace_notify+0x2d2/0x380 [ 85.277220][ T5082] ? __pfx_path_umount+0x10/0x10 [ 85.282175][ T5082] ? user_path_at_empty+0x4c/0x60 [ 85.287222][ T5082] ? __pfx_ptrace_notify+0x10/0x10 [ 85.292349][ T5082] ? __x64_sys_umount+0x126/0x170 [ 85.297437][ T5082] ? __pfx___x64_sys_umount+0x10/0x10 [ 85.302914][ T5082] syscall_exit_work+0xc6/0x190 [ 85.307797][ T5082] syscall_exit_to_user_mode+0x273/0x360 [ 85.313453][ T5082] do_syscall_64+0x100/0x230 [ 85.318054][ T5082] ? clear_bhb_loop+0x35/0x90 [ 85.322740][ T5082] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 85.328655][ T5082] RIP: 0033:0x7f3c1c83ce77 [ 85.333093][ T5082] Code: 00 00 00 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 31 f6 e9 09 00 00 00 66 0f 1f 84 00 00 00 00 00 b8 a6 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 01 c3 48 c7 c2 b8 ff ff ff f7 d8 64 89 02 b8 [ 85.352984][ T5082] RSP: 002b:00007fffd0d57ec8 EFLAGS: 00000202 ORIG_RAX: 00000000000000a6 [ 85.361425][ T5082] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007f3c1c83ce77 [ 85.369410][ T5082] RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007fffd0d57f80 [ 85.377394][ T5082] RBP: 00007fffd0d57f80 R08: 0000000000000000 R09: 0000000000000000 [ 85.385369][ T5082] R10: 00000000ffffffff R11: 0000000000000202 R12: 00007fffd0d58ff0 [ 85.393349][ T5082] R13: 000055556b19c6c0 R14: 00007fffd0d58fec R15: 431bde82d7b634db [ 85.401345][ T5082] [ 85.404366][ T5082] Modules linked in: [ 85.408580][ T5082] ---[ end trace 0000000000000000 ]--- [ 85.414080][ T5082] RIP: 0010:list_lru_add+0x1b1/0x390 [ 85.419449][ T5082] Code: 89 ef e8 e2 06 1c 00 48 8b 45 00 48 8b 4c 24 30 48 8d 6c 08 40 4c 8d 6d 08 4d 89 ec 49 c1 ec 03 48 b8 00 00 00 00 00 fc ff df <41> 80 3c 04 00 74 08 4c 89 ef e8 b0 06 1c 00 4c 8b 7d 08 4c 89 f7 [ 85.439513][ T5082] RSP: 0018:ffffc9000346fa78 EFLAGS: 00010202 [ 85.445664][ T5082] RAX: dffffc0000000000 RBX: 1ffff1100f661037 RCX: 0000000000000000 [ 85.453679][ T5082] RDX: 0000000000000003 RSI: ffffffff8bcaccc0 RDI: ffffffff8c1f54c0 [ 85.461702][ T5082] RBP: 0000000000000000 R08: ffffffff8fac686f R09: 1ffffffff1f58d0d [ 85.469734][ T5082] R10: dffffc0000000000 R11: fffffbfff1f58d0e R12: 0000000000000001 [ 85.477831][ T5082] R13: 0000000000000008 R14: ffff88807b3081b8 R15: 0000000000000000 [ 85.485859][ T5082] FS: 000055556b19b380(0000) GS:ffff8880b9500000(0000) knlGS:0000000000000000 [ 85.494851][ T5082] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 85.501458][ T5082] CR2: 000055556b1a46f8 CR3: 000000007911c000 CR4: 00000000003506f0 [ 85.509489][ T5082] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 85.517564][ T5082] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 85.525585][ T5082] Kernel panic - not syncing: Fatal exception [ 85.532009][ T5082] Kernel Offset: disabled [ 85.536341][ T5082] Rebooting in 86400 seconds..