F2FS-fs (loop3): Magic Mismatch, valid(0xf2f52010) - read(0x0)
F2FS-fs (loop3): Can't find valid F2FS filesystem in 1th superblock
netlink: 'syz-executor.4': attribute type 4 has an invalid length.
================================================================================
UBSAN: Undefined behaviour in fs/f2fs/super.c:2227:16
shift exponent 2316 is too large for 32-bit type 'int'
CPU: 1 PID: 8514 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
 sanity_check_raw_super fs/f2fs/super.c:2227 [inline]
 read_raw_super_block fs/f2fs/super.c:2631 [inline]
 f2fs_fill_super.cold+0x1f9/0x5fb fs/f2fs/super.c:2842
 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:00007ffa11f96a88 EFLAGS: 00000202 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007ffa11f96b20 RCX: 00000000004608aa
RDX: 0000000020000080 RSI: 0000000020000100 RDI: 00007ffa11f96ae0
RBP: 00007ffa11f96ae0 R08: 00007ffa11f96b20 R09: 0000000020000080
R10: 0000000000000000 R11: 0000000000000202 R12: 0000000020000080
R13: 0000000020000100 R14: 0000000020000200 R15: 0000000020000040
================================================================================
IPv6: ADDRCONF(NETDEV_CHANGE): lo: link becomes ready
syz-executor.4 (8515) used greatest stack depth: 22640 bytes left
VFS: could not find a valid V7 on loop5.
VFS: could not find a valid V7 on loop5.
BFS-fs: bfs_fill_super(): Superblock is corrupted
F2FS-fs (loop3): Invalid log blocks per segment (256)

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): Invalid log blocks per segment (256)

F2FS-fs (loop3): Can't find valid F2FS filesystem in 2th superblock
device wlan1 entered promiscuous mode
device wlan1 left promiscuous mode
device wlan1 entered promiscuous mode
IPv6: ADDRCONF(NETDEV_UP): wlan1: link is not ready
xt_l2tp: missing protocol rule (udp|l2tpip)
device wlan1 left promiscuous mode
EXT4-fs (loop0): mounted filesystem without journal. Opts: ,errors=continue
audit: type=1800 audit(1603049965.147:27): pid=8609 uid=0 auid=0 ses=4 subj=system_u:system_r:kernel_t:s0 op=collect_data cause=failed comm="syz-executor.5" name="bus" dev="sda1" ino=15838 res=0
FAT-fs (loop5): Invalid FSINFO signature: 0x00000000, 0x00000000 (sector = 1)
SELinux: unrecognized netlink message: protocol=0 nlmsg_type=0 sclass=netlink_route_socket pid=8650 comm=syz-executor.0
device wlan1 entered promiscuous mode
IPv6: ADDRCONF(NETDEV_UP): wlan1: link is not ready
netlink: 3286 bytes leftover after parsing attributes in process `syz-executor.1'.
netlink: 3286 bytes leftover after parsing attributes in process `syz-executor.1'.
netlink: 'syz-executor.0': attribute type 1 has an invalid length.
netlink: 'syz-executor.0': attribute type 1 has an invalid length.
SELinux: unrecognized netlink message: protocol=0 nlmsg_type=0 sclass=netlink_route_socket pid=8644 comm=syz-executor.0
audit: type=1804 audit(1603049966.457:28): pid=8664 uid=0 auid=0 ses=4 subj=system_u:system_r:kernel_t:s0 op=invalid_pcr cause=open_writers comm="syz-executor.2" name="/root/syzkaller-testdir913455329/syzkaller.gykuRY/13/file1/bus" dev="loop2" ino=3 res=1
audit: type=1804 audit(1603049966.607:29): pid=8681 uid=0 auid=0 ses=4 subj=system_u:system_r:kernel_t:s0 op=invalid_pcr cause=open_writers comm="syz-executor.2" name="/root/syzkaller-testdir913455329/syzkaller.gykuRY/13/file1/bus" dev="loop2" ino=3 res=1
device lo entered promiscuous mode
batman_adv: batadv0: Interface deactivated: batadv_slave_0
batman_adv: batadv0: Removing interface: batadv_slave_0
batman_adv: batadv0: Interface deactivated: batadv_slave_1
batman_adv: batadv0: Removing interface: batadv_slave_1
device bridge_slave_1 left promiscuous mode
bridge0: port 2(bridge_slave_1) entered disabled state
device bridge_slave_0 left promiscuous mode
bridge0: port 1(bridge_slave_0) entered disabled state
device veth1_macvtap left promiscuous mode
device veth0_macvtap left promiscuous mode
device veth1_vlan left promiscuous mode
device veth0_vlan left promiscuous mode