binder: 11835:11846 ioctl c0306201 20000200 returned -22 ================================================================================ UBSAN: Undefined behaviour in fs/ext4/super.c:3763:25 shift exponent 536870914 is too large for 32-bit type 'int' CPU: 0 PID: 11859 Comm: syz-executor.3 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:00007f8cc82cba88 EFLAGS: 00000202 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 00007f8cc82cbb20 RCX: 00000000004608aa RDX: 0000000020000000 RSI: 0000000020000100 RDI: 00007f8cc82cbae0 RBP: 00007f8cc82cbae0 R08: 00007f8cc82cbb20 R09: 0000000020000000 R10: 0000000000000000 R11: 0000000000000202 R12: 0000000020000000 R13: 0000000020000100 R14: 0000000020000a80 R15: 0000000020000040 ================================================================================ EXT4-fs (loop3): couldn't mount RDWR because of unsupported optional features (fe0000) EXT4-fs (loop3): couldn't mount RDWR because of unsupported optional features (fe0000) audit: type=1804 audit(1603112068.399:13): pid=11870 uid=0 auid=0 ses=4 subj=system_u:system_r:kernel_t:s0 op=invalid_pcr cause=ToMToU comm="syz-executor.5" name="/root/syzkaller-testdir958239269/syzkaller.cE6IJO/266/bus" dev="sda1" ino=16206 res=1 audit: type=1804 audit(1603112068.949:14): pid=11872 uid=0 auid=0 ses=4 subj=system_u:system_r:kernel_t:s0 op=invalid_pcr cause=open_writers comm="syz-executor.5" name="/root/syzkaller-testdir958239269/syzkaller.cE6IJO/266/bus" dev="sda1" ino=16206 res=1 binder: 11876:11880 unknown command 0 binder: 11876:11880 ioctl c0306201 20000200 returned -22 FAT-fs (loop2): bogus number of FAT structure FAT-fs (loop3): Unrecognized mount option "measure" or missing value GRED: Unable to relocate VQ 0x0 after dequeue, screwing up backlog FAT-fs (loop2): Can't find a valid FAT filesystem FAT-fs (loop3): Unrecognized mount option "measure" or missing value binder: 11899:11904 unknown command 0 binder: 11899:11904 ioctl c0306201 20000200 returned -22 FAT-fs (loop2): bogus number of FAT structure FAT-fs (loop2): Can't find a valid FAT filesystem FAT-fs (loop0): Invalid FSINFO signature: 0x00000000, 0x00000000 (sector = 1) binder: 11922:11923 unknown command 0 binder: 11922:11923 ioctl c0306201 20000200 returned -22 binder: 11937:11940 unknown command 0 binder: 11937:11940 ioctl c0306201 20000200 returned -22 FAT-fs (loop1): bogus number of reserved sectors binder: 11958:11965 unknown command 0 binder: 11958:11965 ioctl c0306201 20000200 returned -22 FAT-fs (loop1): Can't find a valid FAT filesystem FAT-fs (loop1): bogus number of reserved sectors FAT-fs (loop1): Can't find a valid FAT filesystem binder: 11980:11985 unknown command 0 binder: 11980:11985 ioctl c0306201 20000200 returned -22 FAT-fs (loop0): bogus number of reserved sectors FAT-fs (loop0): Can't find a valid FAT filesystem FAT-fs (loop0): bogus number of reserved sectors FAT-fs (loop0): Can't find a valid FAT filesystem binder: 12002:12008 unknown command 0 binder: 12002:12008 ioctl c0306201 20000200 returned -22 binder: 12002:12008 ioctl c0306201 20000000 returned -22 EXT4-fs (loop1): Unrecognized mount option "B" or missing value EXT4-fs (loop1): failed to parse options in superblock: B EXT4-fs (loop1): Can't read superblock on 2nd try binder: 12021:12024 unknown command 0 binder: 12021:12024 ioctl c0306201 20000200 returned -22 binder: 12021:12024 ioctl c0306201 20000000 returned -22 EXT4-fs (loop1): Unrecognized mount option "B" or missing value EXT4-fs (loop1): failed to parse options in superblock: B EXT4-fs (loop1): Can't read superblock on 2nd try binder: 12036:12042 unknown command 0 binder: 12036:12042 ioctl c0306201 20000200 returned -22 EXT4-fs (loop2): filesystem too large to mount safely on this system binder: 12036:12050 ioctl c0306201 20000000 returned -22 EXT4-fs (loop2): filesystem too large to mount safely on this system FAT-fs (loop5): bogus number of reserved sectors FAT-fs (loop5): Can't find a valid FAT filesystem FAT-fs (loop5): bogus number of reserved sectors FAT-fs (loop5): Can't find a valid FAT filesystem audit: type=1401 audit(1603112071.629:15): op=fscreate invalid_context=":" FAT-fs (loop1): Unrecognized mount option "uid=00000000000000060929" or missing value binder: 12118:12123 ioctl c0306201 20000000 returned -22 FAT-fs (loop1): Unrecognized mount option "uid=00000000000000060929" or missing value binder: 12145:12150 ioctl c0306201 20000000 returned -22 binder: 12159:12160 ioctl c0306201 20000000 returned -22 binder: 12168:12173 unknown command 0 binder: 12168:12173 ioctl c0306201 20000200 returned -22 binder: 12176:12183 ioctl c018620c 0 returned -22 FAT-fs (loop2): Unrecognized mount option "fsname=" or missing value FAT-fs (loop2): Unrecognized mount option "fsname=" or missing value binder: 12192:12200 unknown command 0 binder: 12192:12200 ioctl c0306201 20000200 returned -22 binder: 12210:12214 unknown command 0 binder: 12210:12214 ioctl c0306201 20000200 returned -22 binder: 12229:12234 unknown command 0 binder: 12229:12234 ioctl c0306201 20000200 returned -22 binder: 12248:12252 unknown command 0 binder: 12248:12252 ioctl c0306201 20000200 returned -22 binder: 12269:12272 unknown command 0 binder: 12269:12272 ioctl c0306201 20000200 returned -22 binder: 12281:12287 unknown command 0 binder: 12281:12287 ioctl c0306201 20000200 returned -22 binder: 12296:12300 unknown command 0 binder: 12296:12300 ioctl c0306201 20000200 returned -22 binder: 12311:12313 unknown command 0 binder: 12311:12313 ioctl c0306201 20000200 returned -22 binder: 12320:12324 unknown command 0 binder: 12320:12324 ioctl c0306201 20000200 returned -22 binder: 12335:12338 unknown command 0 binder: 12335:12338 ioctl c0306201 20000200 returned -22 binder: 12349:12354 unknown command 0 binder: 12349:12354 ioctl c0306201 20000200 returned -22 binder: 12367:12373 ioctl c0306201 20000000 returned -22 binder: 12381:12383 ioctl c0306201 20000000 returned -22 binder: 12393:12397 ioctl c0306201 20000000 returned -22 binder: 12431:12433 ioctl c0306201 0 returned -14 binder: 12442:12445 ioctl c0306201 0 returned -14 binder: 12454:12457 ioctl c0306201 0 returned -14