./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor1977687360

<...>
DUID 00:04:dc:6c:a8:75:19:b8:f7:30:df:f1:e8:1e:24:9d:66:1e
forked to background, child pid 4657
[   32.543777][ T4658] 8021q: adding VLAN 0 to HW filter on device bond0
[   32.557187][ T4658] eql: remember to turn off Van-Jacobson compression on your slave devices
Starting sshd: OK

syzkaller
Warning: Permanently added '10.128.0.89' (ECDSA) to the list of known hosts.
execve("./syz-executor1977687360", ["./syz-executor1977687360"], 0x7fff44040390 /* 10 vars */) = 0
brk(NULL)                               = 0x5555563b6000
brk(0x5555563b6c40)                     = 0x5555563b6c40
arch_prctl(ARCH_SET_FS, 0x5555563b6300) = 0
uname({sysname="Linux", nodename="syzkaller", ...}) = 0
readlink("/proc/self/exe", "/root/syz-executor1977687360", 4096) = 28
brk(0x5555563d7c40)                     = 0x5555563d7c40
brk(0x5555563d8000)                     = 0x5555563d8000
mprotect(0x7f75370b5000, 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
unshare(CLONE_NEWPID)                   = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555563b65d0) = 5079
./strace-static-x86_64: Process 5079 attached
[pid  5079] mount(NULL, "/sys/fs/fuse/connections", "fusectl", 0, NULL) = -1 EBUSY (Device or resource busy)
[pid  5079] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid  5079] setsid()                    = 1
[pid  5079] prlimit64(0, RLIMIT_AS, {rlim_cur=204800*1024, rlim_max=204800*1024}, NULL) = 0
[pid  5079] prlimit64(0, RLIMIT_MEMLOCK, {rlim_cur=32768*1024, rlim_max=32768*1024}, NULL) = 0
[pid  5079] prlimit64(0, RLIMIT_FSIZE, {rlim_cur=139264*1024, rlim_max=139264*1024}, NULL) = 0
[pid  5079] prlimit64(0, RLIMIT_STACK, {rlim_cur=1024*1024, rlim_max=1024*1024}, NULL) = 0
[pid  5079] prlimit64(0, RLIMIT_CORE, {rlim_cur=131072*1024, rlim_max=131072*1024}, NULL) = 0
[pid  5079] prlimit64(0, RLIMIT_NOFILE, {rlim_cur=256, rlim_max=256}, NULL) = 0
[pid  5079] unshare(CLONE_NEWNS)        = 0
[pid  5079] mount(NULL, "/", NULL, MS_REC|MS_PRIVATE, NULL) = 0
[pid  5079] unshare(CLONE_NEWIPC)       = 0
[pid  5079] unshare(CLONE_NEWCGROUP)    = 0
[pid  5079] unshare(CLONE_NEWUTS)       = 0
[pid  5079] unshare(CLONE_SYSVSEM)      = 0
[pid  5079] openat(AT_FDCWD, "/proc/sys/kernel/shmmax", O_WRONLY|O_CLOEXEC) = 3
[pid  5079] write(3, "16777216", 8)     = 8
[pid  5079] close(3)                    = 0
[pid  5079] openat(AT_FDCWD, "/proc/sys/kernel/shmall", O_WRONLY|O_CLOEXEC) = 3
[pid  5079] write(3, "536870912", 9)    = 9
[pid  5079] close(3)                    = 0
[pid  5079] openat(AT_FDCWD, "/proc/sys/kernel/shmmni", O_WRONLY|O_CLOEXEC) = 3
[pid  5079] write(3, "1024", 4)         = 4
[pid  5079] close(3)                    = 0
[pid  5079] openat(AT_FDCWD, "/proc/sys/kernel/msgmax", O_WRONLY|O_CLOEXEC) = 3
[pid  5079] write(3, "8192", 4)         = 4
[pid  5079] close(3)                    = 0
[pid  5079] openat(AT_FDCWD, "/proc/sys/kernel/msgmni", O_WRONLY|O_CLOEXEC) = 3
[pid  5079] write(3, "1024", 4)         = 4
[pid  5079] close(3)                    = 0
[pid  5079] openat(AT_FDCWD, "/proc/sys/kernel/msgmnb", O_WRONLY|O_CLOEXEC) = 3
[pid  5079] write(3, "1024", 4)         = 4
[pid  5079] close(3)                    = 0
[pid  5079] openat(AT_FDCWD, "/proc/sys/kernel/sem", O_WRONLY|O_CLOEXEC) = 3
[pid  5079] write(3, "1024 1048576 500 1024", 21) = 21
[pid  5079] close(3)                    = 0
[pid  5079] getpid()                    = 1
[pid  5079] capget({version=_LINUX_CAPABILITY_VERSION_3, pid=1}, {effective=1<<CAP_CHOWN|1<<CAP_DAC_OVERRIDE|1<<CAP_DAC_READ_SEARCH|1<<CAP_FOWNER|1<<CAP_FSETID|1<<CAP_KILL|1<<CAP_SETGID|1<<CAP_SETUID|1<<CAP_SETPCAP|1<<CAP_LINUX_IMMUTABLE|1<<CAP_NET_BIND_SERVICE|1<<CAP_NET_BROADCAST|1<<CAP_NET_ADMIN|1<<CAP_NET_RAW|1<<CAP_IPC_LOCK|1<<CAP_IPC_OWNER|1<<CAP_SYS_MODULE|1<<CAP_SYS_RAWIO|1<<CAP_SYS_CHROOT|1<<CAP_SYS_PTRACE|1<<CAP_SYS_PACCT|1<<CAP_SYS_ADMIN|1<<CAP_SYS_BOOT|1<<CAP_SYS_NICE|1<<CAP_SYS_RESOURCE|1<<CAP_SYS_TIME|1<<CAP_SYS_TTY_CONFIG|1<<CAP_MKNOD|1<<CAP_LEASE|1<<CAP_AUDIT_WRITE|1<<CAP_AUDIT_CONTROL|1<<CAP_SETFCAP|1<<CAP_MAC_OVERRIDE|1<<CAP_MAC_ADMIN|1<<CAP_SYSLOG|1<<CAP_WAKE_ALARM|1<<CAP_BLOCK_SUSPEND|1<<CAP_AUDIT_READ|1<<CAP_PERFMON|1<<CAP_BPF|1<<CAP_CHECKPOINT_RESTORE, permitted=1<<CAP_CHOWN|1<<CAP_DAC_OVERRIDE|1<<CAP_DAC_READ_SEARCH|1<<CAP_FOWNER|1<<CAP_FSETID|1<<CAP_KILL|1<<CAP_SETGID|1<<CAP_SETUID|1<<CAP_SETPCAP|1<<CAP_LINUX_IMMUTABLE|1<<CAP_NET_BIND_SERVICE|1<<CAP_NET_BROADCAST|1<<CAP_NET_ADMIN|1<<CAP_NET_RAW|1<<CAP_IPC_LOCK|1<<CAP_IPC_OWNER|1<<CAP_SYS_MODULE|1<<CAP_SYS_RAWIO|1<<CAP_SYS_CHROOT|1<<CAP_SYS_PTRACE|1<<CAP_SYS_PACCT|1<<CAP_SYS_ADMIN|1<<CAP_SYS_BOOT|1<<CAP_SYS_NICE|1<<CAP_SYS_RESOURCE|1<<CAP_SYS_TIME|1<<CAP_SYS_TTY_CONFIG|1<<CAP_MKNOD|1<<CAP_LEASE|1<<CAP_AUDIT_WRITE|1<<CAP_AUDIT_CONTROL|1<<CAP_SETFCAP|1<<CAP_MAC_OVERRIDE|1<<CAP_MAC_ADMIN|1<<CAP_SYSLOG|1<<CAP_WAKE_ALARM|1<<CAP_BLOCK_SUSPEND|1<<CAP_AUDIT_READ|1<<CAP_PERFMON|1<<CAP_BPF|1<<CAP_CHECKPOINT_RESTORE, inheritable=0}) = 0
[pid  5079] capset({version=_LINUX_CAPABILITY_VERSION_3, pid=1}, {effective=1<<CAP_CHOWN|1<<CAP_DAC_OVERRIDE|1<<CAP_DAC_READ_SEARCH|1<<CAP_FOWNER|1<<CAP_FSETID|1<<CAP_KILL|1<<CAP_SETGID|1<<CAP_SETUID|1<<CAP_SETPCAP|1<<CAP_LINUX_IMMUTABLE|1<<CAP_NET_BIND_SERVICE|1<<CAP_NET_BROADCAST|1<<CAP_NET_ADMIN|1<<CAP_NET_RAW|1<<CAP_IPC_LOCK|1<<CAP_IPC_OWNER|1<<CAP_SYS_MODULE|1<<CAP_SYS_RAWIO|1<<CAP_SYS_CHROOT|1<<CAP_SYS_PACCT|1<<CAP_SYS_ADMIN|1<<CAP_SYS_BOOT|1<<CAP_SYS_RESOURCE|1<<CAP_SYS_TIME|1<<CAP_SYS_TTY_CONFIG|1<<CAP_MKNOD|1<<CAP_LEASE|1<<CAP_AUDIT_WRITE|1<<CAP_AUDIT_CONTROL|1<<CAP_SETFCAP|1<<CAP_MAC_OVERRIDE|1<<CAP_MAC_ADMIN|1<<CAP_SYSLOG|1<<CAP_WAKE_ALARM|1<<CAP_BLOCK_SUSPEND|1<<CAP_AUDIT_READ|1<<CAP_PERFMON|1<<CAP_BPF|1<<CAP_CHECKPOINT_RESTORE, permitted=1<<CAP_CHOWN|1<<CAP_DAC_OVERRIDE|1<<CAP_DAC_READ_SEARCH|1<<CAP_FOWNER|1<<CAP_FSETID|1<<CAP_KILL|1<<CAP_SETGID|1<<CAP_SETUID|1<<CAP_SETPCAP|1<<CAP_LINUX_IMMUTABLE|1<<CAP_NET_BIND_SERVICE|1<<CAP_NET_BROADCAST|1<<CAP_NET_ADMIN|1<<CAP_NET_RAW|1<<CAP_IPC_LOCK|1<<CAP_IPC_OWNER|1<<CAP_SYS_MODULE|1<<CAP_SYS_RAWIO|1<<CAP_SYS_CHROOT|1<<CAP_SYS_PACCT|1<<CAP_SYS_ADMIN|1<<CAP_SYS_BOOT|1<<CAP_SYS_RESOURCE|1<<CAP_SYS_TIME|1<<CAP_SYS_TTY_CONFIG|1<<CAP_MKNOD|1<<CAP_LEASE|1<<CAP_AUDIT_WRITE|1<<CAP_AUDIT_CONTROL|1<<CAP_SETFCAP|1<<CAP_MAC_OVERRIDE|1<<CAP_MAC_ADMIN|1<<CAP_SYSLOG|1<<CAP_WAKE_ALARM|1<<CAP_BLOCK_SUSPEND|1<<CAP_AUDIT_READ|1<<CAP_PERFMON|1<<CAP_BPF|1<<CAP_CHECKPOINT_RESTORE, inheritable=0}) = 0
[pid  5079] unshare(CLONE_NEWNET)       = 0
[pid  5079] openat(AT_FDCWD, "/proc/sys/net/ipv4/ping_group_range", O_WRONLY|O_CLOEXEC) = 3
[pid  5079] write(3, "0 65535", 7)      = 7
[pid  5079] close(3)                    = 0
[pid  5079] mkdir("/dev/binderfs", 0777) = 0
[pid  5079] mount("binder", "/dev/binderfs", "binder", 0, NULL) = 0
[pid  5079] symlink("/dev/binderfs", "./binderfs") = 0
[pid  5079] openat(AT_FDCWD, "/dev/ptmx", O_WRONLY|O_NOCTTY|O_TRUNC|O_APPEND|O_NOFOLLOW|FASYNC) = 3
[pid  5079] ioctl(3, TIOCSPTLCK, [0])   = 0
[pid  5079] socket(AF_INET6, SOCK_RAW, IPPROTO_IGMP) = 4
[pid  5079] ioctl(3, TIOCGPTN, [0])     = 0
[pid  5079] openat(AT_FDCWD, "/dev/pts/0", O_RDONLY) = 5
[pid  5079] io_uring_setup(1456, {flags=0, sq_thread_cpu=0, sq_thread_idle=0, sq_entries=2048, cq_entries=4096, features=IORING_FEAT_SINGLE_MMAP|IORING_FEAT_NODROP|IORING_FEAT_SUBMIT_STABLE|IORING_FEAT_RW_CUR_POS|IORING_FEAT_CUR_PERSONALITY|IORING_FEAT_FAST_POLL|IORING_FEAT_POLL_32BITS|IORING_FEAT_SQPOLL_NONFIXED|IORING_FEAT_EXT_ARG|IORING_FEAT_NATIVE_WORKERS|IORING_FEAT_RSRC_TAGS|IORING_FEAT_CQE_SKIP|IORING_FEAT_LINKED_FILE|0x2000, sq_off={head=0, tail=64, ring_mask=256, ring_entries=264, flags=276, dropped=272, array=65856}, cq_off={head=128, tail=192, ring_mask=260, ring_entries=268, overflow=284, cqes=320, flags=280}}) = 6
[pid  5079] mmap(0x20000000, 74048, PROT_READ|PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE, 6, 0) = 0x20000000
[pid  5079] mmap(0x20000000, 131008, PROT_READ|PROT_WRITE, MAP_SHARED|MAP_FIXED|MAP_POPULATE, 6, 0x10000000) = 0x20000000
[pid  5079] bpf(BPF_MAP_CREATE, 0x20000000, 72) = -1 EINVAL (Invalid argument)
[pid  5079] io_uring_enter(6, 22044, 0, 0, NULL, 0) = 2048
syzkaller login: [   52.001005][ T5079] general protection fault, probably for non-canonical address 0xdffffc0000000001: 0000 [#1] PREEMPT SMP KASAN
[   52.012743][ T5079] KASAN: null-ptr-deref in range [0x0000000000000008-0x000000000000000f]
[   52.021143][ T5079] CPU: 0 PID: 5079 Comm: syz-executor197 Not tainted 6.3.0-rc2-syzkaller-00050-g9c1bec9c0b08 #0
[   52.031537][ T5079] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/02/2023
[   52.041583][ T5079] RIP: 0010:io_poll_remove_entries.part.0+0x376/0x810
[   52.048355][ T5079] Code: ea 03 80 3c 02 00 0f 85 89 03 00 00 48 8b 5b 40 e8 ef d8 78 fd 4c 8d 73 08 48 b8 00 00 00 00 00 fc ff df 4c 89 f2 48 c1 ea 03 <80> 3c 02 00 0f 85 33 03 00 00 48 8b 6b 08 48 85 ed 0f 84 29 01 00
[   52.067948][ T5079] RSP: 0018:ffffc90003c0fa40 EFLAGS: 00010202
[   52.074018][ T5079] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 0000000000000000
[   52.081975][ T5079] RDX: 0000000000000001 RSI: ffffffff840a0c11 RDI: ffff88802183b1c0
[   52.089936][ T5079] RBP: 0000000000000001 R08: 0000000000000001 R09: 0000000000000006
[   52.097893][ T5079] R10: 0000000000000001 R11: 0000000000000000 R12: ffff888075c08904
[   52.105851][ T5079] R13: 0000000000000000 R14: 0000000000000008 R15: ffff88802183b188
[   52.113809][ T5079] FS:  00005555563b6300(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000
[   52.122725][ T5079] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   52.129299][ T5079] CR2: 0000000001d6f3f8 CR3: 0000000021c98000 CR4: 00000000003506f0
[   52.137256][ T5079] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   52.145231][ T5079] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   52.153220][ T5079] Call Trace:
[   52.156488][ T5079]  <TASK>
[   52.159423][ T5079]  ? slab_free_freelist_hook+0x8b/0x1c0
[   52.164967][ T5079]  __io_arm_poll_handler+0x7ec/0xe00
[   52.170265][ T5079]  io_arm_poll_handler+0x4f2/0xc60
[   52.175372][ T5079]  ? __io_arm_poll_handler+0xe00/0xe00
[   52.180825][ T5079]  ? io_poll_remove_entries.part.0+0x4b6/0x810
[   52.186973][ T5079]  ? __io_queue_proc+0x8d0/0x8d0
[   52.191906][ T5079]  ? io_writev_prep_async+0x270/0x270
[   52.197267][ T5079]  io_queue_async+0xc1/0x5b0
[   52.201846][ T5079]  io_req_task_submit+0x256/0x290
[   52.206858][ T5079]  io_poll_task_func+0x994/0x1240
[   52.211875][ T5079]  ? lock_downgrade+0x690/0x690
[   52.216723][ T5079]  ? io_poll_remove_entries.part.0+0x810/0x810
[   52.222893][ T5079]  ? lockdep_hardirqs_on+0x7d/0x100
[   52.228082][ T5079]  ? _raw_spin_unlock_irqrestore+0x41/0x70
[   52.233883][ T5079]  tctx_task_work+0x2d7/0xa00
[   52.238548][ T5079]  ? ctx_flush_and_put+0x210/0x210
[   52.243673][ T5079]  ? do_raw_spin_lock+0x124/0x2b0
[   52.248692][ T5079]  ? spin_bug+0x1c0/0x1c0
[   52.253010][ T5079]  ? _raw_spin_unlock_irq+0x23/0x50
[   52.258201][ T5079]  task_work_run+0x16f/0x270
[   52.262803][ T5079]  ? task_work_cancel+0x30/0x30
[   52.267650][ T5079]  ptrace_notify+0x118/0x140
[   52.272226][ T5079]  syscall_exit_to_user_mode_prepare+0x129/0x220
[   52.278547][ T5079]  syscall_exit_to_user_mode+0xd/0x50
[   52.283929][ T5079]  do_syscall_64+0x46/0xb0
[   52.288334][ T5079]  entry_SYSCALL_64_after_hwframe+0x63/0xcd
[   52.294218][ T5079] RIP: 0033:0x7f753700a5a3
[   52.298618][ T5079] Code: c7 c2 c0 ff ff ff f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb ba 0f 1f 00 64 8b 04 25 18 00 00 00 85 c0 75 14 b8 03 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 45 c3 0f 1f 40 00 48 83 ec 18 89 7c 24 0c e8
[   52.318211][ T5079] RSP: 002b:00007ffce2ad3f88 EFLAGS: 00000246 ORIG_RAX: 0000000000000003
[   52.326613][ T5079] RAX: 0000000000000000 RBX: 0000000000000004 RCX: 00007f753700a5a3
[   52.334572][ T5079] RDX: 0000000000000000 RSI: 000000000000561c RDI: 0000000000000003
[   52.342538][ T5079] RBP: 00007ffce2ad3fa0 R08: 0000000000000000 R09: 0000000000000000
[   52.350506][ T5079] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffce2ad3f98
[   52.358468][ T5079] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
[   52.366432][ T5079]  </TASK>
[   52.369435][ T5079] Modules linked in:
[   52.373460][ T5079] ---[ end trace 0000000000000000 ]---
[   52.379003][ T5079] RIP: 0010:io_poll_remove_entries.part.0+0x376/0x810
[   52.385810][ T5079] Code: ea 03 80 3c 02 00 0f 85 89 03 00 00 48 8b 5b 40 e8 ef d8 78 fd 4c 8d 73 08 48 b8 00 00 00 00 00 fc ff df 4c 89 f2 48 c1 ea 03 <80> 3c 02 00 0f 85 33 03 00 00 48 8b 6b 08 48 85 ed 0f 84 29 01 00
[   52.405503][ T5079] RSP: 0018:ffffc90003c0fa40 EFLAGS: 00010202
[   52.411606][ T5079] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 0000000000000000
[   52.419640][ T5079] RDX: 0000000000000001 RSI: ffffffff840a0c11 RDI: ffff88802183b1c0
[   52.427622][ T5079] RBP: 0000000000000001 R08: 0000000000000001 R09: 0000000000000006
[   52.435615][ T5079] R10: 0000000000000001 R11: 0000000000000000 R12: ffff888075c08904
[   52.443661][ T5079] R13: 0000000000000000 R14: 0000000000000008 R15: ffff88802183b188
[   52.451752][ T5079] FS:  00005555563b6300(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000
[   52.460756][ T5079] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   52.467330][ T5079] CR2: 00007f7537077b00 CR3: 0000000021c98000 CR4: 00000000003506e0
[   52.475334][ T5079] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   52.483353][ T5079] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   52.491356][ T5079] Kernel panic - not syncing: Fatal exception
[   52.497474][ T5079] Kernel Offset: disabled
[   52.501795][ T5079] Rebooting in 86400 seconds..