Warning: Permanently added '10.128.0.208' (ECDSA) to the list of known hosts.
executing program
syzkaller login: [   39.960368] audit: type=1400 audit(1600746196.933:8): avc:  denied  { execmem } for  pid=6480 comm="syz-executor445" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=process permissive=1
[   39.983647] ================================================================================
[   39.992952] UBSAN: Undefined behaviour in fs/jfs/jfs_imap.c:458:7
[   39.999226] shift exponent -1 is negative
[   40.003569] CPU: 1 PID: 6480 Comm: syz-executor445 Not tainted 4.19.146-syzkaller #0
[   40.011434] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   40.020889] Call Trace:
[   40.023480]  dump_stack+0x22c/0x33e
[   40.027093]  ubsan_epilogue+0xe/0x3a
[   40.030888]  __ubsan_handle_shift_out_of_bounds.cold+0x1c4/0x250
[   40.037018]  ? do_raw_spin_unlock+0x171/0x240
[   40.041583]  diReadSpecial.cold+0x1b/0x3e
[   40.045731]  jfs_mount+0x83/0x3d0
[   40.049334]  jfs_fill_super+0x55c/0xb50
[   40.053490]  ? parse_options+0xf50/0xf50
[   40.057558]  ? set_blocksize+0x163/0x3f0
[   40.065690]  mount_bdev+0x2fc/0x3b0
[   40.069316]  ? parse_options+0xf50/0xf50
[   40.073365]  mount_fs+0xa3/0x318
[   40.076797]  vfs_kern_mount.part.0+0x68/0x470
[   40.081288]  do_mount+0x51c/0x2f10
[   40.084914]  ? check_preemption_disabled+0x41/0x2b0
[   40.089930]  ? copy_mount_string+0x40/0x40
[   40.094154]  ? kmem_cache_alloc_trace+0x379/0x4b0
[   40.099080]  ? _copy_from_user+0xd2/0x130
[   40.103213]  ? copy_mount_options+0x261/0x370
[   40.107702]  ksys_mount+0xcf/0x130
[   40.111406]  __x64_sys_mount+0xba/0x150
[   40.115514]  ? lockdep_hardirqs_on+0x3c1/0x5e0
[   40.120089]  do_syscall_64+0xf9/0x670
[   40.123881]  entry_SYSCALL_64_after_hwframe+0x49/0xbe
[   40.129299] RIP: 0033:0x44cb0a
[   40.132542] Code: b8 08 00 00 00 0f 05 48 3d 01 f0 ff ff 0f 83 fd ad 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 da ad fb ff c3 66 0f 1f 84 00 00 00 00 00
[   40.151449] RSP: 002b:00007ffc64c90a18 EFLAGS: 00000283 ORIG_RAX: 00000000000000a5
[   40.159213] RAX: fffff