./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor3346864792 <...> cess permissive=1 [ 17.655169][ T36] audit: type=1400 audit(1751398058.890:63): avc: denied { siginh } for pid=231 comm="sh" scontext=system_u:system_r:sshd_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1 Warning: Permanently added '10.128.1.10' (ED25519) to the list of known hosts. execve("./syz-executor3346864792", ["./syz-executor3346864792"], 0x7ffd5b62c890 /* 10 vars */) = 0 brk(NULL) = 0x555577fe8000 brk(0x555577fe8d00) = 0x555577fe8d00 arch_prctl(ARCH_SET_FS, 0x555577fe8380) = 0 set_tid_address(0x555577fe8650) = 296 set_robust_list(0x555577fe8660, 24) = 0 rseq(0x555577fe8ca0, 0x20, 0, 0x53053053) = -1 ENOSYS (Function not implemented) prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlink("/proc/self/exe", "/root/syz-executor3346864792", 4096) = 28 getrandom("\xfc\x33\x78\x91\xf7\x47\xa1\xfd", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x555577fe8d00 brk(0x555578009d00) = 0x555578009d00 brk(0x55557800a000) = 0x55557800a000 mprotect(0x7f4b6d73e000, 16384, PROT_READ) = 0 mmap(0x1ffffffff000, 4096, PROT_NONE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x1ffffffff000 mmap(0x200000000000, 16777216, PROT_READ|PROT_WRITE|PROT_EXEC, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x200000000000 mmap(0x200001000000, 4096, PROT_NONE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0executing program ) = 0x200001000000 write(1, "executing program\n", 18) = 18 openat(AT_FDCWD, "/dev/usbmon0", O_RDONLY) = 3 openat(AT_FDCWD, "/dev/raw-gadget", O_RDWR) = 4 ioctl(4, USB_RAW_IOCTL_INIT, 0x7ffea2bf1060) = 0 ioctl(4, UI_DEV_CREATE or USB_RAW_IOCTL_RUN, 0) = 0 ioctl(4, USB_RAW_IOCTL_EVENT_FETCH, 0x7ffea2bf1060) = 0 [ 28.290848][ T36] audit: type=1400 audit(1751398069.530:64): avc: denied { execmem } for pid=296 comm="syz-executor334" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1 [ 28.310999][ T36] audit: type=1400 audit(1751398069.530:65): avc: denied { read } for pid=296 comm="syz-executor334" name="usbmon0" dev="devtmpfs" ino=90 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:usbmon_device_t tclass=chr_file permissive=1 [ 28.334734][ T36] audit: type=1400 audit(1751398069.530:66): avc: denied { open } for pid=296 comm="syz-executor334" path="/dev/usbmon0" dev="devtmpfs" ino=90 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:usbmon_device_t tclass=chr_file permissive=1 [ 28.358566][ T36] audit: type=1400 audit(1751398069.540:67): avc: denied { read write } for pid=296 comm="syz-executor334" name="raw-gadget" dev="devtmpfs" ino=190 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:device_t tclass=chr_file permissive=1 ioctl(4, USB_RAW_IOCTL_EVENT_FETCH, 0x7ffea2bf1060) = 0 [ 28.382313][ T36] audit: type=1400 audit(1751398069.540:68): avc: denied { open } for pid=296 comm="syz-executor334" path="/dev/raw-gadget" dev="devtmpfs" ino=190 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:device_t tclass=chr_file permissive=1 [ 28.406164][ T36] audit: type=1400 audit(1751398069.540:69): avc: denied { ioctl } for pid=296 comm="syz-executor334" path="/dev/raw-gadget" dev="devtmpfs" ino=190 ioctlcmd=0x5500 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:device_t tclass=chr_file permissive=1 ioctl(4, USB_RAW_IOCTL_EVENT_FETCH, 0x7ffea2bf1060) = 0 ioctl(4, USB_RAW_IOCTL_EVENT_FETCH, 0x7ffea2bf1060) = 0 ioctl(4, USB_RAW_IOCTL_EP0_WRITE, 0x7ffea2bf0050) = 18 ioctl(4, USB_RAW_IOCTL_EVENT_FETCH, 0x7ffea2bf1060) = 0 [ 28.532746][ T10] usb 1-1: new high-speed USB device number 2 using dummy_hcd ioctl(4, USB_RAW_IOCTL_EVENT_FETCH, 0x7ffea2bf1060) = 0 ioctl(4, USB_RAW_IOCTL_EVENT_FETCH, 0x7ffea2bf1060) = 0 ioctl(4, USB_RAW_IOCTL_EP0_WRITE, 0x7ffea2bf0050) = 18 ioctl(4, USB_RAW_IOCTL_EVENT_FETCH, 0x7ffea2bf1060) = 0 ioctl(4, USB_RAW_IOCTL_EP0_WRITE, 0x7ffea2bf0050) = 9 ioctl(4, USB_RAW_IOCTL_EVENT_FETCH, 0x7ffea2bf1060) = 0 ioctl(4, USB_RAW_IOCTL_EP0_WRITE, 0x7ffea2bf0050) = 36 [ 28.682740][ T10] usb 1-1: Using ep0 maxpacket: 16 [ 28.689744][ T10] usb 1-1: config 0 interface 0 altsetting 0 endpoint 0x81 has an invalid bInterval 0, changing to 7 [ 28.700742][ T10] usb 1-1: config 0 interface 0 altsetting 0 endpoint 0x81 has invalid wMaxPacketSize 0 [ 28.710528][ T10] usb 1-1: config 0 interface 0 altsetting 0 has 1 endpoint descriptor, different from the interface descriptor's value: 9 [ 28.723470][ T10] usb 1-1: New USB device found, idVendor=045e, idProduct=07da, bcdDevice= 0.00 ioctl(4, USB_RAW_IOCTL_EVENT_FETCH, 0x7ffea2bf1060) = 0 ioctl(4, USB_RAW_IOCTL_VBUS_DRAW, 0) = 0 ioctl(4, USB_RAW_IOCTL_CONFIGURE, 0) = 0 ioctl(4, USB_RAW_IOCTL_EP_ENABLE, 0x7f4b6d7443cc) = -1 EINVAL (Invalid argument) ioctl(4, USB_RAW_IOCTL_EP0_READ, 0x7ffea2bf0050) = 0 [ 28.732511][ T10] usb 1-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 28.741721][ T10] usb 1-1: config 0 descriptor?? ioctl(4, USB_RAW_IOCTL_EVENT_FETCH, 0x7ffea2bf1090) = 0 ioctl(4, USB_RAW_IOCTL_EP0_READ, 0x7ffea2bf0080) = 0 ioctl(4, USB_RAW_IOCTL_EVENT_FETCH, 0x7ffea2bf1090) = 0 ioctl(4, USB_RAW_IOCTL_EP0_WRITE, 0x7ffea2bf0080) = 34 [ 29.152014][ T10] microsoft 0003:045E:07DA.0001: unknown main item tag 0x0 [ 29.159323][ T10] microsoft 0003:045E:07DA.0001: ignoring exceeding usage max [ 29.169804][ T10] ================================================================== [ 29.177887][ T10] BUG: KASAN: slab-out-of-bounds in mon_bin_event+0x12c1/0x23e0 [ 29.185532][ T10] Read of size 832 at addr ffff88811e4be481 by task kworker/0:1/10 [ 29.193417][ T10] [ 29.195743][ T10] CPU: 0 UID: 0 PID: 10 Comm: kworker/0:1 Not tainted 6.12.30-syzkaller-g648383294760 #0 93f95243d2c671158253b6b51cea62df3148036e [ 29.195770][ T10] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 [ 29.195782][ T10] Workqueue: usb_hub_wq hub_event [ 29.195819][ T10] Call Trace: [ 29.195824][ T10] [ 29.195832][ T10] __dump_stack+0x21/0x30 [ 29.195854][ T10] dump_stack_lvl+0x10c/0x190 [ 29.195872][ T10] ? __cfi_dump_stack_lvl+0x10/0x10 [ 29.195892][ T10] ? __cfi__printk+0x10/0x10 [ 29.195916][ T10] print_address_description+0x71/0x220 [ 29.195933][ T10] print_report+0x4a/0x70 [ 29.195947][ T10] kasan_report+0x163/0x1a0 [ 29.195977][ T10] ? mon_bin_event+0x12c1/0x23e0 [ 29.195997][ T10] ? mon_bin_event+0x12c1/0x23e0 [ 29.196016][ T10] kasan_check_range+0x299/0x2a0 [ 29.196041][ T10] ? mon_bin_event+0x12c1/0x23e0 [ 29.196060][ T10] __asan_memcpy+0x31/0x80 [ 29.196080][ T10] mon_bin_event+0x12c1/0x23e0 [ 29.196102][ T10] ? mon_bin_complete+0x50/0x50 [ 29.196120][ T10] ? __kmalloc_noprof+0x1b1/0x450 [ 29.196141][ T10] ? __hid_request+0x1e8/0x410 [ 29.196161][ T10] ? hid_connect+0x49a/0x1a20 [ 29.196181][ T10] ? hid_hw_start+0xcb/0x160 [ 29.196200][ T10] ? ms_probe+0x194/0x460 [ 29.196219][ T10] ? __cfi_mon_bin_submit+0x10/0x10 [ 29.196238][ T10] mon_bin_submit+0x2b/0x40 [ 29.196256][ T10] mon_submit+0x1b9/0x230 [ 29.196273][ T10] usb_hcd_submit_urb+0x12d/0x1a20 [ 29.196298][ T10] ? bus_probe_device+0x18b/0x270 [ 29.196316][ T10] ? usb_probe_device+0x1d4/0x380 [ 29.196338][ T10] ? really_probe+0x2d3/0x890 [ 29.196361][ T10] ? __driver_probe_device+0x198/0x280 [ 29.196384][ T10] ? driver_probe_device+0x54/0x3f0 [ 29.196407][ T10] ? __device_attach_driver+0x2f1/0x4b0 [ 29.196432][ T10] usb_submit_urb+0x111b/0x1800 [ 29.196451][ T10] usb_start_wait_urb+0x11b/0x2f0 [ 29.196471][ T10] ? usb_api_blocking_completion+0xd0/0xd0 [ 29.196491][ T10] ? __kasan_kmalloc+0x96/0xb0 [ 29.196515][ T10] ? __kasan_check_write+0x18/0x20 [ 29.196534][ T10] ? usb_alloc_urb+0x9b/0x200 [ 29.196551][ T10] usb_control_msg+0x25a/0x490 [ 29.196571][ T10] usbhid_raw_request+0x457/0x590 [ 29.196590][ T10] __hid_request+0x1e8/0x410 [ 29.196611][ T10] hidinput_connect+0x241b/0x3340 [ 29.196640][ T10] hid_connect+0x49a/0x1a20 [ 29.196661][ T10] ? usbhid_start+0x1a67/0x2530 [ 29.196679][ T10] ? __cfi_hid_connect+0x10/0x10 [ 29.196701][ T10] hid_hw_start+0xcb/0x160 [ 29.196721][ T10] ms_probe+0x194/0x460 [ 29.196741][ T10] hid_device_probe+0x2c4/0x5d0 [ 29.196763][ T10] ? __cfi_hid_device_probe+0x10/0x10 [ 29.196785][ T10] really_probe+0x2d3/0x890 [ 29.196809][ T10] __driver_probe_device+0x198/0x280 [ 29.196832][ T10] driver_probe_device+0x54/0x3f0 [ 29.196855][ T10] ? __device_attach_driver+0x2db/0x4b0 [ 29.196878][ T10] __device_attach_driver+0x2f1/0x4b0 [ 29.196902][ T10] bus_for_each_drv+0x260/0x2f0 [ 29.196919][ T10] ? __cfi___device_attach_driver+0x10/0x10 [ 29.196943][ T10] ? __cfi_bus_for_each_drv+0x10/0x10 [ 29.196969][ T10] ? _raw_spin_unlock_irqrestore+0x4a/0x70 [ 29.196986][ T10] __device_attach+0x2bd/0x3a0 [ 29.197008][ T10] ? device_attach+0x40/0x40 [ 29.197029][ T10] ? _raw_spin_lock+0x8c/0x120 [ 29.197054][ T10] ? __cfi__raw_spin_lock+0x10/0x10 [ 29.197079][ T10] device_initial_probe+0x1e/0x30 [ 29.197101][ T10] bus_probe_device+0x18b/0x270 [ 29.197119][ T10] device_add+0x80c/0xc00 [ 29.197141][ T10] hid_add_device+0x39b/0x560 [ 29.197164][ T10] usbhid_probe+0xde3/0x12b0 [ 29.197183][ T10] usb_probe_interface+0x696/0xc00 [ 29.197208][ T10] ? __cfi_usb_probe_interface+0x10/0x10 [ 29.197231][ T10] really_probe+0x2d3/0x890 [ 29.197255][ T10] __driver_probe_device+0x198/0x280 [ 29.197278][ T10] driver_probe_device+0x54/0x3f0 [ 29.197302][ T10] ? __device_attach_driver+0x2db/0x4b0 [ 29.197326][ T10] __device_attach_driver+0x2f1/0x4b0 [ 29.197350][ T10] bus_for_each_drv+0x260/0x2f0 [ 29.197367][ T10] ? __cfi___device_attach_driver+0x10/0x10 [ 29.197391][ T10] ? __cfi_bus_for_each_drv+0x10/0x10 [ 29.197409][ T10] ? _raw_spin_unlock_irqrestore+0x4a/0x70 [ 29.197425][ T10] __device_attach+0x2bd/0x3a0 [ 29.197448][ T10] ? device_attach+0x40/0x40 [ 29.197469][ T10] ? _raw_spin_lock+0x8c/0x120 [ 29.197493][ T10] ? __cfi__raw_spin_lock+0x10/0x10 [ 29.197518][ T10] device_initial_probe+0x1e/0x30 [ 29.197540][ T10] bus_probe_device+0x18b/0x270 [ 29.197558][ T10] device_add+0x80c/0xc00 [ 29.197580][ T10] usb_set_configuration+0x1ad4/0x20b0 [ 29.197606][ T10] usb_generic_driver_probe+0x95/0x160 [ 29.197626][ T10] usb_probe_device+0x1d4/0x380 [ 29.197648][ T10] ? __cfi_usb_probe_device+0x10/0x10 [ 29.197671][ T10] really_probe+0x2d3/0x890 [ 29.197695][ T10] __driver_probe_device+0x198/0x280 [ 29.197718][ T10] driver_probe_device+0x54/0x3f0 [ 29.197742][ T10] ? __device_attach_driver+0x2db/0x4b0 [ 29.197766][ T10] __device_attach_driver+0x2f1/0x4b0 [ 29.197790][ T10] bus_for_each_drv+0x260/0x2f0 [ 29.197807][ T10] ? __cfi___device_attach_driver+0x10/0x10 [ 29.197832][ T10] ? __cfi_bus_for_each_drv+0x10/0x10 [ 29.197851][ T10] ? _raw_spin_unlock_irqrestore+0x4a/0x70 [ 29.197867][ T10] __device_attach+0x2bd/0x3a0 [ 29.197889][ T10] ? device_attach+0x40/0x40 [ 29.197910][ T10] ? _raw_spin_lock+0x8c/0x120 [ 29.197934][ T10] ? __cfi__raw_spin_lock+0x10/0x10 [ 29.197964][ T10] device_initial_probe+0x1e/0x30 [ 29.197986][ T10] bus_probe_device+0x18b/0x270 [ 29.198004][ T10] device_add+0x80c/0xc00 [ 29.198026][ T10] usb_new_device+0x9ed/0x1590 [ 29.198047][ T10] ? __cfi_usb_new_device+0x10/0x10 [ 29.198068][ T10] hub_event+0x265b/0x41a0 [ 29.198096][ T10] ? __cfi_hub_event+0x10/0x10 [ 29.198118][ T10] ? __kasan_check_write+0x18/0x20 [ 29.198137][ T10] ? pwq_dec_nr_in_flight+0x6c7/0xc60 [ 29.198160][ T10] ? __cfi__raw_spin_lock_irq+0x10/0x10 [ 29.198185][ T10] ? kick_pool+0xb9/0x550 [ 29.198200][ T10] process_scheduled_works+0x7d2/0x1020 [ 29.198226][ T10] worker_thread+0xc58/0x1250 [ 29.198250][ T10] ? schedule+0xc6/0x240 [ 29.198266][ T10] kthread+0x2ca/0x370 [ 29.198290][ T10] ? __cfi_worker_thread+0x10/0x10 [ 29.198312][ T10] ? __cfi_kthread+0x10/0x10 [ 29.198336][ T10] ret_from_fork+0x64/0xa0 [ 29.198355][ T10] ? __cfi_kthread+0x10/0x10 [ 29.198379][ T10] ret_from_fork_asm+0x1a/0x30 [ 29.198402][ T10] [ 29.198408][ T10] [ 29.825680][ T10] Allocated by task 10: [ 29.829917][ T10] kasan_save_track+0x3e/0x80 [ 29.834608][ T10] kasan_save_alloc_info+0x40/0x50 [ 29.839750][ T10] __kasan_kmalloc+0x96/0xb0 [ 29.846356][ T10] __kmalloc_noprof+0x1b1/0x450 [ 29.851205][ T10] __hid_request+0xa9/0x410 [ 29.855706][ T10] hidinput_connect+0x241b/0x3340 [ 29.860750][ T10] hid_connect+0x49a/0x1a20 [ 29.865270][ T10] hid_hw_start+0xcb/0x160 [ 29.869687][ T10] ms_probe+0x194/0x460 [ 29.873855][ T10] hid_device_probe+0x2c4/0x5d0 [ 29.878706][ T10] really_probe+0x2d3/0x890 [ 29.883208][ T10] __driver_probe_device+0x198/0x280 [ 29.888497][ T10] driver_probe_device+0x54/0x3f0 [ 29.893532][ T10] __device_attach_driver+0x2f1/0x4b0 [ 29.898933][ T10] bus_for_each_drv+0x260/0x2f0 [ 29.903783][ T10] __device_attach+0x2bd/0x3a0 [ 29.908546][ T10] device_initial_probe+0x1e/0x30 [ 29.913609][ T10] bus_probe_device+0x18b/0x270 [ 29.918459][ T10] device_add+0x80c/0xc00 [ 29.922789][ T10] hid_add_device+0x39b/0x560 [ 29.927470][ T10] usbhid_probe+0xde3/0x12b0 [ 29.932058][ T10] usb_probe_interface+0x696/0xc00 [ 29.937175][ T10] really_probe+0x2d3/0x890 [ 29.942202][ T10] __driver_probe_device+0x198/0x280 [ 29.947489][ T10] driver_probe_device+0x54/0x3f0 [ 29.952512][ T10] __device_attach_driver+0x2f1/0x4b0 [ 29.957886][ T10] bus_for_each_drv+0x260/0x2f0 [ 29.962732][ T10] __device_attach+0x2bd/0x3a0 [ 29.967495][ T10] device_initial_probe+0x1e/0x30 [ 29.972518][ T10] bus_probe_device+0x18b/0x270 [ 29.977366][ T10] device_add+0x80c/0xc00 [ 29.981695][ T10] usb_set_configuration+0x1ad4/0x20b0 [ 29.987153][ T10] usb_generic_driver_probe+0x95/0x160 [ 29.992607][ T10] usb_probe_device+0x1d4/0x380 [ 29.997459][ T10] really_probe+0x2d3/0x890 [ 30.001962][ T10] __driver_probe_device+0x198/0x280 [ 30.007266][ T10] driver_probe_device+0x54/0x3f0 [ 30.012294][ T10] __device_attach_driver+0x2f1/0x4b0 [ 30.017666][ T10] bus_for_each_drv+0x260/0x2f0 [ 30.022515][ T10] __device_attach+0x2bd/0x3a0 [ 30.027282][ T10] device_initial_probe+0x1e/0x30 [ 30.032308][ T10] bus_probe_device+0x18b/0x270 [ 30.037152][ T10] device_add+0x80c/0xc00 [ 30.041491][ T10] usb_new_device+0x9ed/0x1590 [ 30.046252][ T10] hub_event+0x265b/0x41a0 [ 30.050668][ T10] process_scheduled_works+0x7d2/0x1020 [ 30.056215][ T10] worker_thread+0xc58/0x1250 [ 30.060895][ T10] kthread+0x2ca/0x370 [ 30.064963][ T10] ret_from_fork+0x64/0xa0 [ 30.069376][ T10] ret_from_fork_asm+0x1a/0x30 [ 30.074141][ T10] [ 30.076466][ T10] The buggy address belongs to the object at ffff88811e4be480 [ 30.076466][ T10] which belongs to the cache kmalloc-8 of size 8 [ 30.090164][ T10] The buggy address is located 1 bytes inside of [ 30.090164][ T10] allocated 7-byte region [ffff88811e4be480, ffff88811e4be487) [ 30.103955][ T10] [ 30.106270][ T10] The buggy address belongs to the physical page: [ 30.112681][ T10] page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x11e4be [ 30.121556][ T10] flags: 0x4000000000000000(zone=1) [ 30.126751][ T10] page_type: f5(slab) [ 30.130727][ T10] raw: 4000000000000000 ffff888100041500 dead000000000122 0000000000000000 [ 30.139304][ T10] raw: 0000000000000000 0000000080800080 00000001f5000000 0000000000000000 [ 30.147873][ T10] page dumped because: kasan: bad access detected [ 30.154283][ T10] page_owner tracks the page as allocated [ 30.159987][ T10] page last allocated via order 0, migratetype Unmovable, gfp_mask 0x52cc0(GFP_KERNEL|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP), pid 145, tgid 145 (dhcpcd), ts 7524742718, free_ts 0 [ 30.177623][ T10] post_alloc_hook+0x3b9/0x3f0 [ 30.182384][ T10] prep_new_page+0x1c/0x120 [ 30.186880][ T10] get_page_from_freelist+0x46bb/0x4750 [ 30.192422][ T10] __alloc_pages_noprof+0x30d/0x6c0 [ 30.197613][ T10] alloc_slab_page+0x6b/0x1f0 [ 30.202292][ T10] allocate_slab+0x69/0x440 [ 30.206798][ T10] ___slab_alloc+0x59a/0x8b0 [ 30.211390][ T10] __kmalloc_node_noprof+0x23e/0x450 [ 30.216677][ T10] __vmalloc_node_range_noprof+0x544/0x1420 [ 30.222565][ T10] __vmalloc_noprof+0xfe/0x1d0 [ 30.227325][ T10] bpf_prog_alloc_no_stats+0x67/0x7a0 [ 30.232961][ T10] bpf_prog_alloc+0x44/0x230 [ 30.237561][ T10] bpf_prog_create_from_user+0xac/0x2c0 [ 30.243115][ T10] do_seccomp+0x7bd/0xee0 [ 30.247455][ T10] prctl_set_seccomp+0x50/0x80 [ 30.252231][ T10] __se_sys_prctl+0x2e4/0x1460 [ 30.257009][ T10] page_owner free stack trace missing [ 30.262375][ T10] [ 30.264695][ T10] Memory state around the buggy address: [ 30.270315][ T10] ffff88811e4be380: fa fc fc fc fa fc fc fc 04 fc fc fc fc fc fc fc [ 30.278388][ T10] ffff88811e4be400: fa fc fc fc 04 fc fc fc fc fc fc fc fc fc fc fc [ 30.286439][ T10] >ffff88811e4be480: 07 fc fc fc fc fc fc fc fa fc fc fc fa fc fc fc [ 30.294500][ T10] ^ [ 30.298562][ T10] ffff88811e4be500: fa fc fc fc fa fc fc fc fc fc fc fc fc fc fc fc exit_group(0) = ? +++ exited with 0 +++ [ 30.30