attempt to access beyond end of device loop1: rw=2049, want=52, limit=32 Buffer I/O error on dev loop1, logical block 25, lost async page write ================================================================================ UBSAN: Undefined behaviour in fs/jfs/jfs_mount.c:385:25 shift exponent -14836 is negative CPU: 0 PID: 29527 Comm: syz-executor.5 Not tainted 4.19.150-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __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 chkSuper.cold+0x1e/0x98 fs/jfs/jfs_mount.c:385 jfs_mount+0x47/0x3d0 fs/jfs/jfs_mount.c:94 jfs_fill_super+0x55c/0xb50 fs/jfs/super.c:589 mount_bdev+0x2fc/0x3b0 fs/super.c:1158 mount_fs+0xa3/0x318 fs/super.c:1261 vfs_kern_mount.part.0+0x68/0x470 fs/namespace.c:961 vfs_kern_mount fs/namespace.c:951 [inline] do_new_mount fs/namespace.c:2469 [inline] do_mount+0x51c/0x2f10 fs/namespace.c:2799 ksys_mount+0xcf/0x130 fs/namespace.c:3015 __do_sys_mount fs/namespace.c:3029 [inline] __se_sys_mount fs/namespace.c:3026 [inline] __x64_sys_mount+0xba/0x150 fs/namespace.c:3026 do_syscall_64+0xf9/0x670 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x4608aa Code: b8 a6 00 00 00 0f 05 48 3d 01 f0 ff ff 0f 83 ad 89 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 0f 83 8a 89 fb ff c3 66 0f 1f 84 00 00 00 00 00 RSP: 002b:00007f52db77da88 EFLAGS: 00000202 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 00007f52db77db20 RCX: 00000000004608aa RDX: 0000000020000000 RSI: 0000000020000100 RDI: 00007f52db77dae0 RBP: 00007f52db77dae0 R08: 00007f52db77db20 R09: 0000000020000000 R10: 0000000000000000 R11: 0000000000000202 R12: 0000000020000000 R13: 0000000020000100 R14: 0000000020000200 R15: 000000002006d200 ================================================================================ audit: type=1804 audit(1602873462.468:22): pid=29543 uid=0 auid=0 ses=4 subj=system_u:system_r:kernel_t:s0 op=invalid_pcr cause=open_writers comm="syz-executor.4" name="/root/syzkaller-testdir948265394/syzkaller.svbIGi/952/bus" dev="sda1" ino=17916 res=1 ================================================================================ UBSAN: Undefined behaviour in fs/jfs/jfs_imap.c:458:7 shift exponent 14848 is too large for 32-bit type 'unsigned int' CPU: 1 PID: 29527 Comm: syz-executor.5 Not tainted 4.19.150-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __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 diReadSpecial.cold+0x1b/0x3e fs/jfs/jfs_imap.c:458 jfs_mount+0x83/0x3d0 fs/jfs/jfs_mount.c:98 jfs_fill_super+0x55c/0xb50 fs/jfs/super.c:589 mount_bdev+0x2fc/0x3b0 fs/super.c:1158 mount_fs+0xa3/0x318 fs/super.c:1261 vfs_kern_mount.part.0+0x68/0x470 fs/namespace.c:961 vfs_kern_mount fs/namespace.c:951 [inline] do_new_mount fs/namespace.c:2469 [inline] do_mount+0x51c/0x2f10 fs/namespace.c:2799 ksys_mount+0xcf/0x130 fs/namespace.c:3015 __do_sys_mount fs/namespace.c:3029 [inline] __se_sys_mount fs/namespace.c:3026 [inline] __x64_sys_mount+0xba/0x150 fs/namespace.c:3026 do_syscall_64+0xf9/0x670 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x4608aa Code: b8 a6 00 00 00 0f 05 48 3d 01 f0 ff ff 0f 83 ad 89 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 0f 83 8a 89 fb ff c3 66 0f 1f 84 00 00 00 00 00 RSP: 002b:00007f52db77da88 EFLAGS: 00000202 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 00007f52db77db20 RCX: 00000000004608aa RDX: 0000000020000000 RSI: 0000000020000100 RDI: 00007f52db77dae0 RBP: 00007f52db77dae0 R08: 00007f52db77db20 R09: 0000000020000000 R10: 0000000000000000 R11: 0000000000000202 R12: 0000000020000000 R13: 0000000020000100 R14: 0000000020000200 R15: 000000002006d200 ================================================================================ audit: type=1800 audit(1602873462.468:23): pid=29543 uid=0 auid=0 ses=4 subj=system_u:system_r:kernel_t:s0 op=collect_data cause=failed(directio) comm="syz-executor.4" name="bus" dev="sda1" ino=17916 res=0 audit: type=1400 audit(1602873462.468:24): avc: denied { module_load } for pid=29542 comm="syz-executor.4" path="/root/syzkaller-testdir948265394/syzkaller.svbIGi/952/bus" dev="sda1" ino=17916 scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:object_r:unlabeled_t:s0 tclass=system permissive=1 audit: type=1804 audit(1602873462.738:25): pid=29543 uid=0 auid=0 ses=4 subj=system_u:system_r:kernel_t:s0 op=invalid_pcr cause=open_writers comm="syz-executor.4" name="/root/syzkaller-testdir948265394/syzkaller.svbIGi/952/bus" dev="sda1" ino=17916 res=1 audit: type=1800 audit(1602873462.738:26): pid=29543 uid=0 auid=0 ses=4 subj=system_u:system_r:kernel_t:s0 op=collect_data cause=failed(directio) comm="syz-executor.4" name="bus" dev="sda1" ino=17916 res=0 ================================================================================ UBSAN: Undefined behaviour in fs/jfs/jfs_imap.c:126:7 shift exponent 14848 is too large for 32-bit type 'int' CPU: 1 PID: 29527 Comm: syz-executor.5 Not tainted 4.19.150-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __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 diMount.cold+0x17/0x1c fs/jfs/jfs_imap.c:126 jfs_mount+0xbf/0x3d0 fs/jfs/jfs_mount.c:111 jfs_fill_super+0x55c/0xb50 fs/jfs/super.c:589 mount_bdev+0x2fc/0x3b0 fs/super.c:1158 mount_fs+0xa3/0x318 fs/super.c:1261 vfs_kern_mount.part.0+0x68/0x470 fs/namespace.c:961 vfs_kern_mount fs/namespace.c:951 [inline] do_new_mount fs/namespace.c:2469 [inline] do_mount+0x51c/0x2f10 fs/namespace.c:2799 ksys_mount+0xcf/0x130 fs/namespace.c:3015 __do_sys_mount fs/namespace.c:3029 [inline] __se_sys_mount fs/namespace.c:3026 [inline] __x64_sys_mount+0xba/0x150 fs/namespace.c:3026 do_syscall_64+0xf9/0x670 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x4608aa Code: b8 a6 00 00 00 0f 05 48 3d 01 f0 ff ff 0f 83 ad 89 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 0f 83 8a 89 fb ff c3 66 0f 1f 84 00 00 00 00 00 RSP: 002b:00007f52db77da88 EFLAGS: 00000202 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 00007f52db77db20 RCX: 00000000004608aa RDX: 0000000020000000 RSI: 0000000020000100 RDI: 00007f52db77dae0 RBP: 00007f52db77dae0 R08: 00007f52db77db20 R09: 0000000020000000 R10: 0000000000000000 R11: 0000000000000202 R12: 0000000020000000 R13: 0000000020000100 R14: 0000000020000200 R15: 000000002006d200 ================================================================================ attempt to access beyond end of device loop1: rw=2049, want=52, limit=32 Buffer I/O error on dev loop1, logical block 25, lost async page write vhci_hcd: USB_PORT_FEAT_BH_PORT_RESET req not supported for USB 2.0 roothub attempt to access beyond end of device loop1: rw=2049, want=52, limit=32 Buffer I/O error on dev loop1, logical block 25, lost async page write audit: type=1400 audit(1602873463.818:27): avc: denied { sys_admin } for pid=29598 comm="syz-executor.4" capability=21 scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=cap_userns permissive=1 attempt to access beyond end of device loop1: rw=2049, want=52, limit=32 Buffer I/O error on dev loop1, logical block 25, lost async page write attempt to access beyond end of device loop1: rw=2049, want=52, limit=32 Buffer I/O error on dev loop1, logical block 25, lost async page write 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. kvm: vcpu 0: requested 128 ns lapic timer period limited to 200000 ns attempt to access beyond end of device loop1: rw=2049, want=52, limit=32 Buffer I/O error on dev loop1, logical block 25, lost async page write attempt to access beyond end of device loop1: rw=2049, want=52, limit=32 Buffer I/O error on dev loop1, logical block 25, lost async page write kvm: vcpu 0: requested 128 ns lapic timer period limited to 200000 ns attempt to access beyond end of device loop1: rw=2049, want=52, limit=32 Buffer I/O error on dev loop1, logical block 25, lost async page write kvm: vcpu 0: requested 128 ns lapic timer period limited to 200000 ns attempt to access beyond end of device loop1: rw=2049, want=52, limit=32 Buffer I/O error on dev loop1, logical block 25, lost async page write attempt to access beyond end of device loop1: rw=2049, want=52, limit=32 Buffer I/O error on dev loop1, logical block 25, lost async page write attempt to access beyond end of device loop1: rw=2049, want=52, limit=32 netlink: 'syz-executor.4': attribute type 1 has an invalid length. netlink: 'syz-executor.4': attribute type 2 has an invalid length. attempt to access beyond end of device loop1: rw=2049, want=52, limit=32 buffer_io_error: 1 callbacks suppressed Buffer I/O error on dev loop1, logical block 25, lost async page write netlink: 10 bytes leftover after parsing attributes in process `syz-executor.4'. SELinux: unrecognized netlink message: protocol=0 nlmsg_type=104 sclass=netlink_route_socket pid=30031 comm=syz-executor.3 SELinux: unrecognized netlink message: protocol=0 nlmsg_type=104 sclass=netlink_route_socket pid=30038 comm=syz-executor.3