./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor3183844314 <...> forked to background, child pid 3175 no interfaces have a carrier [ 20.706488][ T3176] 8021q: adding VLAN 0 to HW filter on device bond0 [ 20.715597][ T3176] eql: remember to turn off Van-Jacobson compression on your slave devices Starting sshd: OK syzkaller Warning: Permanently added '10.128.0.132' (ECDSA) to the list of known hosts. execve("./syz-executor3183844314", ["./syz-executor3183844314"], 0x7ffdf22f9f90 /* 10 vars */) = 0 brk(NULL) = 0x55555560c000 brk(0x55555560cc40) = 0x55555560cc40 arch_prctl(ARCH_SET_FS, 0x55555560c300) = 0 uname({sysname="Linux", nodename="syzkaller", ...}) = 0 readlink("/proc/self/exe", "/root/syz-executor3183844314", 4096) = 28 brk(0x55555562dc40) = 0x55555562dc40 brk(0x55555562e000) = 0x55555562e000 mprotect(0x7f28bf0be000, 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 openat(AT_FDCWD, "/dev/raw-gadget", O_RDWR) = 3 ioctl(3, USB_RAW_IOCTL_INIT, 0x7ffdf13b8ae0) = 0 ioctl(3, UI_DEV_CREATE or USB_RAW_IOCTL_RUN, 0) = 0 ioctl(3, USB_RAW_IOCTL_EVENT_FETCH, 0x7ffdf13b8ae0) = 0 ioctl(3, USB_RAW_IOCTL_EVENT_FETCH, 0x7ffdf13b8ae0) = 0 ioctl(3, USB_RAW_IOCTL_EP0_WRITE, 0x7ffdf13b7ad0) = 18 syzkaller login: [ 36.032428][ T140] usb 1-1: new high-speed USB device number 2 using dummy_hcd ioctl(3, USB_RAW_IOCTL_EVENT_FETCH, 0x7ffdf13b8ae0) = 0 ioctl(3, USB_RAW_IOCTL_EP0_WRITE, 0x7ffdf13b7ad0) = 18 ioctl(3, USB_RAW_IOCTL_EVENT_FETCH, 0x7ffdf13b8ae0) = 0 ioctl(3, USB_RAW_IOCTL_EP0_WRITE, 0x7ffdf13b7ad0) = 9 ioctl(3, USB_RAW_IOCTL_EVENT_FETCH, 0x7ffdf13b8ae0) = 0 ioctl(3, USB_RAW_IOCTL_EP0_WRITE, 0x7ffdf13b7ad0) = 27 ioctl(3, USB_RAW_IOCTL_EVENT_FETCH, 0x7ffdf13b8ae0) = 0 ioctl(3, USB_RAW_IOCTL_VBUS_DRAW, 0x13) = 0 ioctl(3, USB_RAW_IOCTL_CONFIGURE, 0) = 0 ioctl(3, USB_RAW_IOCTL_EP_ENABLE, 0x7f28bf0c43ac) = 12 ioctl(3, USB_RAW_IOCTL_EP0_READ, 0x7ffdf13b7ad0) = 0 [ 36.412498][ T140] usb 1-1: config 0 interface 0 altsetting 0 endpoint 0x84 has an invalid bInterval 0, changing to 7 [ 36.423632][ T140] usb 1-1: New USB device found, idVendor=15c2, idProduct=0039, bcdDevice=a9.8c [ 36.432877][ T140] usb 1-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 36.444214][ T140] usb 1-1: config 0 descriptor?? [ 36.485788][ T140] input: iMON Panel, Knob and Mouse(15c2:0039) as /devices/platform/dummy_hcd.0/usb1/1-1/1-1:0.0/input/input5 ioctl(3, USB_RAW_IOCTL_EVENT_FETCH, 0x7ffdf13b8b10) = 0 ioctl(3, USB_RAW_IOCTL_EP0_READ, 0x7ffdf13b7b00) = 8 [ 36.782385][ T140] rc_core: IR keymap rc-imon-pad not found [ 36.788452][ T140] Registered IR keymap rc-empty [ 36.793923][ T140] imon 1-1:0.0: Looks like you're trying to use an IR protocol this device does not support [ 36.804019][ T140] imon 1-1:0.0: Unsupported IR protocol specified, overriding to iMON IR protocol ioctl(3, USB_RAW_IOCTL_EVENT_FETCH, 0x7ffdf13b8b10) = 0 ioctl(3, USB_RAW_IOCTL_EP0_READ, 0x7ffdf13b7b00) = 8 [ 36.933611][ T140] rc rc0: iMON Remote (15c2:0039) as /devices/platform/dummy_hcd.0/usb1/1-1/1-1:0.0/rc/rc0 [ 36.944329][ T140] input: iMON Remote (15c2:0039) as /devices/platform/dummy_hcd.0/usb1/1-1/1-1:0.0/rc/rc0/input6 [ 36.958322][ T140] imon 1-1:0.0: iMON device (15c2:0039, intf0) on usb<1:2> initialized [ 37.113499][ T3594] [ 37.115945][ T3594] ====================================================== [ 37.123296][ T3594] WARNING: possible circular locking dependency detected [ 37.130346][ T3594] 5.18.0-rc7-syzkaller-00048-gf993aed406ea #0 Not tainted [ 37.137425][ T3594] ------------------------------------------------------ [ 37.144424][ T3594] syz-executor318/3594 is trying to acquire lock: [ 37.150804][ T3594] ffffffff8cf4e6e8 (driver_lock){+.+.}-{3:3}, at: display_open+0x1f/0x220 [ 37.159321][ T3594] [ 37.159321][ T3594] but task is already holding lock: [ 37.166656][ T3594] ffffffff8cc8e670 (minor_rwsem#2){++++}-{3:3}, at: usb_open+0x24/0x2e0 [ 37.174993][ T3594] [ 37.174993][ T3594] which lock already depends on the new lock. [ 37.174993][ T3594] [ 37.185454][ T3594] [ 37.185454][ T3594] the existing dependency chain (in reverse order) is: [ 37.194539][ T3594] [ 37.194539][ T3594] -> #2 (minor_rwsem#2){++++}-{3:3}: [ 37.202000][ T3594] down_write+0x90/0x150 [ 37.206739][ T3594] usb_register_dev+0x19d/0x7e0 [ 37.212086][ T3594] imon_probe+0x2506/0x2b90 [ 37.217093][ T3594] usb_probe_interface+0x315/0x7f0 [ 37.222723][ T3594] really_probe+0x23e/0xb20 [ 37.227720][ T3594] __driver_probe_device+0x338/0x4d0 [ 37.233753][ T3594] driver_probe_device+0x4c/0x1a0 [ 37.239466][ T3594] __device_attach_driver+0x20b/0x2f0 [ 37.245562][ T3594] bus_for_each_drv+0x15f/0x1e0 [ 37.250908][ T3594] __device_attach+0x228/0x4a0 [ 37.256187][ T3594] bus_probe_device+0x1e4/0x290 [ 37.261539][ T3594] device_add+0xb83/0x1e20 [ 37.266862][ T3594] usb_set_configuration+0x101e/0x1900 [ 37.272830][ T3594] usb_generic_driver_probe+0xba/0x100 [ 37.278789][ T3594] usb_probe_device+0xd9/0x2c0 [ 37.284046][ T3594] really_probe+0x23e/0xb20 [ 37.289049][ T3594] __driver_probe_device+0x338/0x4d0 [ 37.294829][ T3594] driver_probe_device+0x4c/0x1a0 [ 37.300350][ T3594] __device_attach_driver+0x20b/0x2f0 [ 37.306303][ T3594] bus_for_each_drv+0x15f/0x1e0 [ 37.311738][ T3594] __device_attach+0x228/0x4a0 [ 37.316993][ T3594] bus_probe_device+0x1e4/0x290 [ 37.322342][ T3594] device_add+0xb83/0x1e20 [ 37.327267][ T3594] usb_new_device.cold+0x641/0x1091 [ 37.332961][ T3594] hub_event+0x25c6/0x4680 [ 37.337871][ T3594] process_one_work+0x996/0x1610 [ 37.343317][ T3594] worker_thread+0x665/0x1080 [ 37.348485][ T3594] kthread+0x2e9/0x3a0 [ 37.353044][ T3594] ret_from_fork+0x1f/0x30 [ 37.357955][ T3594] [ 37.357955][ T3594] -> #1 (&ictx->lock){+.+.}-{3:3}: [ 37.365218][ T3594] __mutex_lock+0x12f/0x12f0 [ 37.370304][ T3594] imon_probe+0xff9/0x2b90 [ 37.375561][ T3594] usb_probe_interface+0x315/0x7f0 [ 37.381166][ T3594] really_probe+0x23e/0xb20 [ 37.386161][ T3594] __driver_probe_device+0x338/0x4d0 [ 37.391938][ T3594] driver_probe_device+0x4c/0x1a0 [ 37.397467][ T3594] __device_attach_driver+0x20b/0x2f0 [ 37.403591][ T3594] bus_for_each_drv+0x15f/0x1e0 [ 37.408942][ T3594] __device_attach+0x228/0x4a0 [ 37.414198][ T3594] bus_probe_device+0x1e4/0x290 [ 37.419547][ T3594] device_add+0xb83/0x1e20 [ 37.424458][ T3594] usb_set_configuration+0x101e/0x1900 [ 37.430412][ T3594] usb_generic_driver_probe+0xba/0x100 [ 37.436365][ T3594] usb_probe_device+0xd9/0x2c0 [ 37.441621][ T3594] really_probe+0x23e/0xb20 [ 37.446617][ T3594] __driver_probe_device+0x338/0x4d0 [ 37.452397][ T3594] driver_probe_device+0x4c/0x1a0 [ 37.457911][ T3594] __device_attach_driver+0x20b/0x2f0 [ 37.463789][ T3594] bus_for_each_drv+0x15f/0x1e0 [ 37.469135][ T3594] __device_attach+0x228/0x4a0 [ 37.474389][ T3594] bus_probe_device+0x1e4/0x290 [ 37.479730][ T3594] device_add+0xb83/0x1e20 [ 37.484637][ T3594] usb_new_device.cold+0x641/0x1091 [ 37.490331][ T3594] hub_event+0x25c6/0x4680 [ 37.496989][ T3594] process_one_work+0x996/0x1610 [ 37.502424][ T3594] worker_thread+0x665/0x1080 [ 37.507592][ T3594] kthread+0x2e9/0x3a0 [ 37.512156][ T3594] ret_from_fork+0x1f/0x30 [ 37.517065][ T3594] [ 37.517065][ T3594] -> #0 (driver_lock){+.+.}-{3:3}: [ 37.524329][ T3594] __lock_acquire+0x2ac6/0x56c0 [ 37.529675][ T3594] lock_acquire+0x1ab/0x510 [ 37.534682][ T3594] __mutex_lock+0x12f/0x12f0 [ 37.539778][ T3594] display_open+0x1f/0x220 [ 37.544702][ T3594] usb_open+0x204/0x2e0 [ 37.549355][ T3594] chrdev_open+0x266/0x770 [ 37.554280][ T3594] do_dentry_open+0x4a1/0x11e0 [ 37.559554][ T3594] path_openat+0x1c71/0x2910 [ 37.564827][ T3594] do_filp_open+0x1aa/0x400 [ 37.569829][ T3594] do_sys_openat2+0x16d/0x4c0 [ 37.575003][ T3594] __x64_sys_openat+0x13f/0x1f0 [ 37.580349][ T3594] do_syscall_64+0x35/0xb0 [ 37.585263][ T3594] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 37.591651][ T3594] [ 37.591651][ T3594] other info that might help us debug this: [ 37.591651][ T3594] [ 37.601853][ T3594] Chain exists of: [ 37.601853][ T3594] driver_lock --> &ictx->lock --> minor_rwsem#2 [ 37.601853][ T3594] [ 37.613992][ T3594] Possible unsafe locking scenario: [ 37.613992][ T3594] [ 37.621586][ T3594] CPU0 CPU1 [ 37.626929][ T3594] ---- ---- [ 37.632272][ T3594] lock(minor_rwsem#2); [ 37.636492][ T3594] lock(&ictx->lock); [ 37.643075][ T3594] lock(minor_rwsem#2); [ 37.649806][ T3594] lock(driver_lock); [ 37.653849][ T3594] [ 37.653849][ T3594] *** DEADLOCK *** [ 37.653849][ T3594] [ 37.662066][ T3594] 1 lock held by syz-executor318/3594: [ 37.667516][ T3594] #0: ffffffff8cc8e670 (minor_rwsem#2){++++}-{3:3}, at: usb_open+0x24/0x2e0 [ 37.676471][ T3594] [ 37.676471][ T3594] stack backtrace: [ 37.682931][ T3594] CPU: 1 PID: 3594 Comm: syz-executor318 Not tainted 5.18.0-rc7-syzkaller-00048-gf993aed406ea #0 [ 37.693403][ T3594] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 37.703441][ T3594] Call Trace: [ 37.706698][ T3594] [ 37.709691][ T3594] dump_stack_lvl+0xcd/0x134 [ 37.714259][ T3594] check_noncircular+0x25f/0x2e0 [ 37.719176][ T3594] ? print_circular_bug+0x1e0/0x1e0 [ 37.724366][ T3594] ? lock_chain_count+0x20/0x20 [ 37.729191][ T3594] __lock_acquire+0x2ac6/0x56c0 [ 37.734018][ T3594] ? lockdep_hardirqs_on_prepare+0x400/0x400 [ 37.739988][ T3594] ? __lock_acquire+0x2589/0x56c0 [ 37.745005][ T3594] lock_acquire+0x1ab/0x510 [ 37.749485][ T3594] ? display_open+0x1f/0x220 [ 37.754051][ T3594] ? lock_release+0x720/0x720 [ 37.758705][ T3594] __mutex_lock+0x12f/0x12f0 [ 37.763279][ T3594] ? display_open+0x1f/0x220 [ 37.767841][ T3594] ? lock_release+0x720/0x720 [ 37.772489][ T3594] ? display_open+0x1f/0x220 [ 37.777054][ T3594] ? mutex_lock_io_nested+0x1150/0x1150 [ 37.782570][ T3594] ? down_read+0x198/0x440 [ 37.786953][ T3594] ? chrdev_open+0x58c/0x770 [ 37.791515][ T3594] ? rwsem_down_read_slowpath+0xa70/0xa70 [ 37.797206][ T3594] ? do_raw_spin_lock+0x120/0x2a0 [ 37.802207][ T3594] display_open+0x1f/0x220 [ 37.806597][ T3594] ? display_close+0x160/0x160 [ 37.811338][ T3594] usb_open+0x204/0x2e0 [ 37.815467][ T3594] ? usb_devnode+0xa0/0xa0 [ 37.819857][ T3594] chrdev_open+0x266/0x770 [ 37.824248][ T3594] ? cdev_device_add+0x220/0x220 [ 37.829158][ T3594] ? fsnotify_perm.part.0+0x221/0x610 [ 37.834503][ T3594] do_dentry_open+0x4a1/0x11e0 [ 37.839239][ T3594] ? cdev_device_add+0x220/0x220 [ 37.844147][ T3594] ? may_open+0x1f6/0x420 [ 37.848451][ T3594] path_openat+0x1c71/0x2910 [ 37.853014][ T3594] ? path_lookupat+0x860/0x860 [ 37.857750][ T3594] ? lockdep_hardirqs_on_prepare+0x400/0x400 [ 37.863706][ T3594] do_filp_open+0x1aa/0x400 [ 37.868185][ T3594] ? may_open_dev+0xf0/0xf0 [ 37.872661][ T3594] ? rwlock_bug.part.0+0x90/0x90 [ 37.877575][ T3594] ? __sanitizer_cov_trace_const_cmp8+0x1d/0x70 [ 37.883787][ T3594] ? _find_next_bit+0x1e3/0x260 [ 37.888633][ T3594] ? _raw_spin_unlock+0x24/0x40 [ 37.893464][ T3594] ? alloc_fd+0x2f0/0x670 [ 37.897885][ T3594] do_sys_openat2+0x16d/0x4c0 [ 37.902543][ T3594] ? build_open_flags+0x6f0/0x6f0 [ 37.907806][ T3594] ? ptrace_notify+0xfa/0x140 [ 37.912495][ T3594] ? lock_downgrade+0x6e0/0x6e0 [ 37.917498][ T3594] __x64_sys_openat+0x13f/0x1f0 [ 37.922325][ T3594] ? __ia32_sys_open+0x1c0/0x1c0 [ 37.927328][ T3594] ? _raw_spin_unlock_irq+0x1f/0x40 [ 37.932498][ T3594] ? lockdep_hardirqs_on+0x79/0x100 [ 37.937758][ T3594] ? _raw_spin_unlock_irq+0x2a/0x40 [ 37.942945][ T3594] ? ptrace_notify+0xfa/0x140 [ 37.947615][ T3594] do_syscall_64+0x35/0xb0 [ 37.952011][ T3594] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 37.957880][ T3594] RIP: 0033:0x7f28bf00fbc7 [ 37.962270][ T3594] Code: 25 00 00 41 00 3d 00 00 41 00 74 47 64 8b 04 25 18 00 00 00 85 c0 75 6b 44 89 e2 48 89 ee bf 9c ff ff ff b8 01 01 00 00 0f 05 <48> 3d 00 f0 ff ff 0f 87 95 00 00 00 48 8b 4c 24 28 64 48 2b 0c 25 [ 37.981871][ T3594] RSP: 002b:00007ffdf13b9a30 EFLAGS: 00000246 ORIG_RAX: 0000000000000101 [ 37.990265][ T3594] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f28bf00fbc7 [ 37.998286][ T3594] RDX: 0000000000000002 RSI: 00007ffdf13b9ab0 RDI: 00000000ffffff9c [ 38.006244][ T3594] RBP: 00007ffdf13b9ab0 R08: 0000000000000000 R09: 000000000000000f openat(AT_FDCWD, "/dev/char/180:0", O_RDWR) = 4 exit_group(0) = ? +++ exited with 0 +++ [ 38.014195][ T3594] R10: 0000000000