syz-executor.3 (20877) used greatest stack depth: 23216 bytes left audit: type=1804 audit(1603297514.773:40): pid=20882 uid=0 auid=0 ses=4 subj=system_u:system_r:kernel_t:s0 op=invalid_pcr cause=open_writers comm="syz-executor.3" name="/root/syzkaller-testdir042293293/syzkaller.Ri25Ro/801/bus" dev="sda1" ino=17222 res=1 ================================================================================ UBSAN: Undefined behaviour in fs/ext4/super.c:3763:25 shift exponent 64 is too large for 32-bit type 'int' CPU: 1 PID: 20895 Comm: syz-executor.0 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 audit: type=1800 audit(1603297514.903:41): pid=20904 uid=0 auid=0 ses=4 subj=system_u:system_r:kernel_t:s0 op=collect_data cause=failed(directio) comm="syz-executor.3" name="bus" dev="sda1" ino=17224 res=0 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:00007fde3147da88 EFLAGS: 00000202 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 00007fde3147db20 RCX: 00000000004608aa RDX: 0000000020000000 RSI: 0000000020000100 RDI: 00007fde3147dae0 RBP: 00007fde3147dae0 R08: 00007fde3147db20 R09: 0000000020000000 R10: 0000000000000000 R11: 0000000000000202 R12: 0000000020000000 R13: 0000000020000100 R14: 0000000020000200 R15: 0000000020013a00 ================================================================================ EXT4-fs (loop0): Invalid log block size: 64 EXT4-fs (loop0): Invalid log block size: 64 nla_parse: 2 callbacks suppressed netlink: 12 bytes leftover after parsing attributes in process `syz-executor.2'. bond18 (uninitialized): Released all slaves audit: type=1804 audit(1603297515.693:42): pid=20929 uid=0 auid=0 ses=4 subj=system_u:system_r:kernel_t:s0 op=invalid_pcr cause=open_writers comm="syz-executor.3" name="/root/syzkaller-testdir042293293/syzkaller.Ri25Ro/803/bus" dev="sda1" ino=17219 res=1 netlink: 12 bytes leftover after parsing attributes in process `syz-executor.2'. bond18 (uninitialized): Released all slaves netlink: 12 bytes leftover after parsing attributes in process `syz-executor.2'. bond18 (uninitialized): Released all slaves netlink: 12 bytes leftover after parsing attributes in process `syz-executor.2'. bond18 (uninitialized): Released all slaves FAT-fs (loop5): Invalid FSINFO signature: 0x00000000, 0x00000000 (sector = 1) netlink: 12 bytes leftover after parsing attributes in process `syz-executor.2'. FAT-fs (loop5): Invalid FSINFO signature: 0x00000000, 0x00000000 (sector = 1) bond18 (uninitialized): Released all slaves netlink: 12 bytes leftover after parsing attributes in process `syz-executor.2'. FAT-fs (loop0): Invalid FSINFO signature: 0x00000000, 0x00000000 (sector = 1) bond18 (uninitialized): Released all slaves FAT-fs (md0): unable to read boot sector FAT-fs (loop0): Invalid FSINFO signature: 0x00000000, 0x00000000 (sector = 1) netlink: 12 bytes leftover after parsing attributes in process `syz-executor.2'. device bond18 entered promiscuous mode IPv6: ADDRCONF(NETDEV_UP): bond18: link is not ready 8021q: adding VLAN 0 to HW filter on device bond18 FAT-fs (loop0): bogus logical sector size 1037 FAT-fs (loop0): Can't find a valid FAT filesystem netlink: 12 bytes leftover after parsing attributes in process `syz-executor.2'. device bond19 entered promiscuous mode IPv6: ADDRCONF(NETDEV_UP): bond19: link is not ready 8021q: adding VLAN 0 to HW filter on device bond19 netlink: 12 bytes leftover after parsing attributes in process `syz-executor.2'. FAT-fs (loop1): Invalid FSINFO signature: 0x00000000, 0x00000000 (sector = 1) device bond20 entered promiscuous mode IPv6: ADDRCONF(NETDEV_UP): bond20: link is not ready 8021q: adding VLAN 0 to HW filter on device bond20 FAT-fs (loop1): Invalid FSINFO signature: 0x00000000, 0x00000000 (sector = 1) netlink: 12 bytes leftover after parsing attributes in process `syz-executor.2'. device bond21 entered promiscuous mode IPv6: ADDRCONF(NETDEV_UP): bond21: link is not ready 8021q: adding VLAN 0 to HW filter on device bond21 FAT-fs (loop1): Invalid FSINFO signature: 0x00000000, 0x00000000 (sector = 1) device bond22 entered promiscuous mode IPv6: ADDRCONF(NETDEV_UP): bond22: link is not ready 8021q: adding VLAN 0 to HW filter on device bond22 EXT4-fs (loop0): invalid inodes per group: 62343 EXT4-fs (loop0): invalid inodes per group: 62343 FAT-fs (loop1): Invalid FSINFO signature: 0x00000000, 0x00000000 (sector = 1) nla_parse: 1 callbacks suppressed netlink: 12 bytes leftover after parsing attributes in process `syz-executor.2'. device bond23 entered promiscuous mode IPv6: ADDRCONF(NETDEV_UP): bond23: link is not ready 8021q: adding VLAN 0 to HW filter on device bond23 netlink: 12 bytes leftover after parsing attributes in process `syz-executor.2'. device bond24 entered promiscuous mode IPv6: ADDRCONF(NETDEV_UP): bond24: link is not ready 8021q: adding VLAN 0 to HW filter on device bond24 netlink: 12 bytes leftover after parsing attributes in process `syz-executor.2'. device bond25 entered promiscuous mode IPv6: ADDRCONF(NETDEV_UP): bond25: link is not ready 8021q: adding VLAN 0 to HW filter on device bond25 netlink: 12 bytes leftover after parsing attributes in process `syz-executor.2'. device bond26 entered promiscuous mode IPv6: ADDRCONF(NETDEV_UP): bond26: link is not ready 8021q: adding VLAN 0 to HW filter on device bond26 netlink: 12 bytes leftover after parsing attributes in process `syz-executor.2'. bond27 (uninitialized): Released all slaves netlink: 12 bytes leftover after parsing attributes in process `syz-executor.2'. bond27 (uninitialized): Released all slaves netlink: 12 bytes leftover after parsing attributes in process `syz-executor.2'. bond27 (uninitialized): Released all slaves netlink: 12 bytes leftover after parsing attributes in process `syz-executor.2'. bond27 (uninitialized): Released all slaves netlink: 12 bytes leftover after parsing attributes in process `syz-executor.2'. bond27 (uninitialized): Released all slaves netlink: 12 bytes leftover after parsing attributes in process `syz-executor.2'. bond27 (uninitialized): Released all slaves