================================================================================ UBSAN: Undefined behaviour in fs/ext4/super.c:3763:25 shift exponent 64 is too large for 32-bit type 'int' CPU: 1 PID: 14382 Comm: syz-executor.1 Not tainted 4.19.152-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 ext4_fill_super.cold+0x33b/0x4ea fs/ext4/super.c:3763 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:00007f7ebbb03a88 EFLAGS: 00000202 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 00007f7ebbb03b20 RCX: 00000000004608aa RDX: 0000000020000200 RSI: 0000000020000080 RDI: 00007f7ebbb03ae0 RBP: 00007f7ebbb03ae0 R08: 00007f7ebbb03b20 R09: 0000000020000200 R10: 0000000000000000 R11: 0000000000000202 R12: 0000000020000200 R13: 0000000020000080 R14: 00000000200004c0 R15: 00000000200001c0 ================================================================================ EXT4-fs (loop1): error: could not find journal device path: error -2 EXT4-fs (loop1): error: could not find journal device path: error -2 SELinux: unrecognized netlink message: protocol=0 nlmsg_type=113 sclass=netlink_route_socket pid=14450 comm=syz-executor.1 audit: type=1400 audit(1603032361.527:13): avc: denied { create } for pid=14467 comm="syz-executor.0" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=dccp_socket permissive=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. audit: type=1400 audit(1603032361.557:14): avc: denied { name_bind } for pid=14467 comm="syz-executor.0" src=20003 scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:object_r:port_t:s0 tclass=dccp_socket permissive=1 audit: type=1400 audit(1603032361.557:15): avc: denied { node_bind } for pid=14467 comm="syz-executor.0" src=20003 scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:object_r:node_t:s0 tclass=dccp_socket permissive=1 audit: type=1400 audit(1603032361.557:16): avc: denied { name_connect } for pid=14467 comm="syz-executor.0" dest=20003 scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:object_r:port_t:s0 tclass=dccp_socket permissive=1 audit: type=1800 audit(1603032361.677:17): pid=14483 uid=0 auid=0 ses=4 subj=system_u:system_r:kernel_t:s0 op=collect_data cause=failed(directio) comm="syz-executor.1" name="bus" dev="sda1" ino=16306 res=0 audit: type=1800 audit(1603032361.767:18): pid=14483 uid=0 auid=0 ses=4 subj=system_u:system_r:kernel_t:s0 op=collect_data cause=failed(directio) comm="syz-executor.1" name="bus" dev="sda1" ino=16306 res=0 audit: type=1800 audit(1603032362.127:19): pid=14473 uid=0 auid=0 ses=4 subj=system_u:system_r:kernel_t:s0 op=collect_data cause=failed comm="syz-executor.0" name="cgroup.controllers" dev="sda1" ino=16922 res=0 audit: type=1804 audit(1603032364.427:20): pid=14517 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-testdir926797283/syzkaller.ItOQwX/417/bus" dev="sda1" ino=16941 res=1 audit: type=1804 audit(1603032364.457:21): pid=14517 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-testdir926797283/syzkaller.ItOQwX/417/bus" dev="sda1" ino=16941 res=1 audit: type=1804 audit(1603032364.477:22): pid=14517 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-testdir926797283/syzkaller.ItOQwX/417/bus" dev="sda1" ino=16941 res=1