attempt to access beyond end of device ================================================================================ ptrace attach of "/root/syz-executor.5"[21104] was attempted by "/root/syz-executor.5"[21108] UBSAN: Undefined behaviour in drivers/usb/gadget/udc/dummy_hcd.c:2302:33 shift exponent 16403 is too large for 32-bit type 'int' CPU: 1 PID: 21111 Comm: syz-executor.0 Not tainted 4.19.149-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: loop3: rw=12288, want=4104, limit=20 __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x22c/0x33e lib/dump_stack.c:118 ubsan_epilogue+0xe/0x3a lib/ubsan.c:161 __ubsan_handle_shift_out_of_bounds.cold+0x1c4/0x250 lib/ubsan.c:422 attempt to access beyond end of device dummy_hub_control.cold+0x1a/0xbf drivers/usb/gadget/udc/dummy_hcd.c:2302 loop3: rw=12288, want=8200, limit=20 rh_call_control drivers/usb/core/hcd.c:679 [inline] rh_urb_enqueue drivers/usb/core/hcd.c:838 [inline] usb_hcd_submit_urb+0xb7e/0x20d0 drivers/usb/core/hcd.c:1651 usb_submit_urb+0xba2/0x13b0 drivers/usb/core/urb.c:571 usb_start_wait_urb+0x108/0x2b0 drivers/usb/core/message.c:57 usb_internal_control_msg drivers/usb/core/message.c:101 [inline] usb_control_msg+0x31c/0x4a0 drivers/usb/core/message.c:152 proc_control+0x360/0x6d0 drivers/usb/core/devio.c:1143 usbdev_do_ioctl+0x15fc/0x3580 drivers/usb/core/devio.c:2423 F2FS-fs (loop3): Failed to get valid F2FS checkpoint usbdev_ioctl+0x21/0x30 drivers/usb/core/devio.c:2580 vfs_ioctl fs/ioctl.c:46 [inline] file_ioctl fs/ioctl.c:501 [inline] do_vfs_ioctl+0xcdb/0x12e0 fs/ioctl.c:688 binder: 21101:21104 unknown command 0 binder: 21101:21104 ioctl c0306201 20000200 returned -22 ksys_ioctl+0x9b/0xc0 fs/ioctl.c:705 __do_sys_ioctl fs/ioctl.c:712 [inline] __se_sys_ioctl fs/ioctl.c:710 [inline] __x64_sys_ioctl+0x6f/0xb0 fs/ioctl.c:710 do_syscall_64+0xf9/0x670 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x45dd99 Code: 0d b4 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 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 0f 83 db b3 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007f6d74b89c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 000000000001afc0 RCX: 000000000045dd99 RDX: 0000000020000000 RSI: 00000000c0185500 RDI: 0000000000000003 RBP: 000000000118bf60 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000118bf2c R13: 00007ffc5eb6789f R14: 00007f6d74b8a9c0 R15: 000000000118bf2c ================================================================================ A link change request failed with some changes committed already. Interface caif0 may have been left with an inconsistent configuration, please check. netlink: 24 bytes leftover after parsing attributes in process `syz-executor.4'. F2FS-fs (loop3): Magic Mismatch, valid(0xf2f52010) - read(0x0) F2FS-fs (loop3): Can't find valid F2FS filesystem in 1th superblock attempt to access beyond end of device loop3: rw=12288, want=4104, limit=20 attempt to access beyond end of device loop3: rw=12288, want=8200, limit=20 F2FS-fs (loop3): Failed to get valid F2FS checkpoint F2FS-fs (loop3): Magic Mismatch, valid(0xf2f52010) - read(0x0) attempt to access beyond end of device loop3: rw=12288, want=4104, limit=20 attempt to access beyond end of device loop3: rw=12288, want=8200, limit=20 IPv6: ADDRCONF(NETDEV_CHANGE): vcan0: link becomes ready overlayfs: upperdir is in-use as upperdir/workdir of another mount, mount with '-o index=off' to override exclusive upperdir protection. A link change request failed with some changes committed already. Interface caif0 may have been left with an inconsistent configuration, please check. ptrace attach of "/root/syz-executor.5"[21134] was attempted by "/root/syz-executor.5"[21135] binder: 21132:21134 unknown command 0 binder: 21132:21134 ioctl c0306201 20000200 returned -22 netlink: 24 bytes leftover after parsing attributes in process `syz-executor.4'. attempt to access beyond end of device loop3: rw=12288, want=4104, limit=20 IPv6: ADDRCONF(NETDEV_CHANGE): vcan0: link becomes ready attempt to access beyond end of device A link change request failed with some changes committed already. Interface caif0 may have been left with an inconsistent configuration, please check. ptrace attach of "/root/syz-executor.2"[21155] was attempted by "/root/syz-executor.2"[21159] loop3: rw=12288, want=8200, limit=20 binder: 21146:21155 unknown command 0 attempt to access beyond end of device binder: 21146:21155 ioctl c0306201 20000200 returned -22 loop3: rw=12288, want=4104, limit=20 attempt to access beyond end of device loop3: rw=12288, want=8200, limit=20 attempt to access beyond end of device loop3: rw=12288, want=4104, limit=20 attempt to access beyond end of device loop3: rw=12288, want=8200, limit=20 attempt to access beyond end of device loop3: rw=12288, want=4104, limit=20 attempt to access beyond end of device loop3: rw=12288, want=8200, limit=20 attempt to access beyond end of device loop3: rw=12288, want=4104, limit=20 attempt to access beyond end of device loop3: rw=12288, want=8200, limit=20 attempt to access beyond end of device loop3: rw=12288, want=4104, limit=20 attempt to access beyond end of device XFS (loop2): Invalid superblock magic number loop3: rw=12288, want=8200, limit=20 EXT4-fs (loop5): VFS: Can't find ext4 filesystem XFS (loop2): Invalid superblock magic number EXT4-fs (loop5): VFS: Can't find ext4 filesystem audit: type=1800 audit(1601651405.493:244): pid=21293 uid=0 auid=0 ses=4 subj=system_u:system_r:kernel_t:s0 op=collect_data cause=failed comm="syz-executor.2" name="bus" dev="sda1" ino=15815 res=0 Scheduler tracepoints stat_sleep, stat_iowait, stat_blocked and stat_runtime require the kernel parameter schedstats=enable or kernel.sched_schedstats=1 L1TF CPU bug present and SMT on, data leak possible. See CVE-2018-3646 and https://www.kernel.org/doc/html/latest/admin-guide/hw-vuln/l1tf.html for details. 9pnet_virtio: no channels available for device éq‰Y’3aK f2fs_msg: 20 callbacks suppressed F2FS-fs (loop3): Magic Mismatch, valid(0xf2f52010) - read(0x0) F2FS-fs (loop3): Can't find valid F2FS filesystem in 1th superblock F2FS-fs (loop3): Magic Mismatch, valid(0xf2f52010) - read(0x0) F2FS-fs (loop3): Can't find valid F2FS filesystem in 2th superblock F2FS-fs (loop3): Magic Mismatch, valid(0xf2f52010) - read(0x0) F2FS-fs (loop3): Can't find valid F2FS filesystem in 1th superblock F2FS-fs (loop3): Magic Mismatch, valid(0xf2f52010) - read(0x0) F2FS-fs (loop3): Can't find valid F2FS filesystem in 2th superblock F2FS-fs (loop3): Magic Mismatch, valid(0xf2f52010) - read(0x0) F2FS-fs (loop3): Can't find valid F2FS filesystem in 1th superblock FAT-fs (loop0): bogus number of FAT structure FAT-fs (loop0): Can't find a valid FAT filesystem audit: type=1804 audit(1601651408.943:245): pid=21525 uid=0 auid=0 ses=4 subj=system_u:system_r:kernel_t:s0 op=invalid_pcr cause=open_writers comm="syz-executor.0" name="/root/syzkaller-testdir166515159/syzkaller.HLvLhz/627/bus" dev="sda1" ino=16658 res=1 FAT-fs (loop0): bogus number of FAT structure FAT-fs (loop0): Can't find a valid FAT filesystem audit: type=1804 audit(1601651409.083:246): pid=21525 uid=0 auid=0 ses=4 subj=system_u:system_r:kernel_t:s0 op=invalid_pcr cause=ToMToU comm="syz-executor.0" name="/root/syzkaller-testdir166515159/syzkaller.HLvLhz/627/bus" dev="sda1" ino=16658 res=1 audit: type=1800 audit(1601651410.063:247): pid=21619 uid=0 auid=0 ses=4 subj=system_u:system_r:kernel_t:s0 op=collect_data cause=failed(directio) comm="syz-executor.0" name="bus" dev="sda1" ino=17280 res=0 kvm [21702]: vcpu0, guest rIP: 0x145 Hyper-V unhandled rdmsr: 0x40000007 kvm [21702]: vcpu0, guest rIP: 0x145 Hyper-V unhandled rdmsr: 0x40000009 kvm [21702]: vcpu0, guest rIP: 0x14c Hyper-V uhandled wrmsr: 0x4000001c data 0x26 audit: type=1804 audit(1601651411.833:248): pid=21740 uid=0 auid=0 ses=4 subj=system_u:system_r:kernel_t:s0 op=invalid_pcr cause=open_writers comm="syz-executor.1" name="/root/syzkaller-testdir280291596/syzkaller.uA0oGK/533/bus" dev="sda1" ino=16753 res=1 audit: type=1804 audit(1601651411.863:249): pid=21744 uid=0 auid=0 ses=4 subj=system_u:system_r:kernel_t:s0 op=invalid_pcr cause=open_writers comm="syz-executor.0" name="/root/syzkaller-testdir166515159/syzkaller.HLvLhz/635/bus" dev="sda1" ino=17266 res=1