random: sshd: uninitialized urandom read (32 bytes read)
random: crng init done
random: 1 urandom warning(s) missed due to ratelimiting
kasan: CONFIG_KASAN_INLINE enabled
kasan: GPF could be caused by NULL-ptr deref or user memory access
general protection fault: 0000 [#1] PREEMPT SMP KASAN
Modules linked in:
CPU: 0 PID: 2047 Comm: syz-executor514 Not tainted 4.9.141+ #1
task: ffff8801d1a417c0 task.stack: ffff8801cf8a8000
RIP: 0010:[<ffffffff815cf729>]  [<ffffffff815cf729>] __read_once_size include/linux/compiler.h:243 [inline]
RIP: 0010:[<ffffffff815cf729>]  [<ffffffff815cf729>] compound_head include/linux/page-flags.h:143 [inline]
RIP: 0010:[<ffffffff815cf729>]  [<ffffffff815cf729>] put_page include/linux/mm.h:782 [inline]
RIP: 0010:[<ffffffff815cf729>]  [<ffffffff815cf729>] dio_cleanup fs/direct-io.c:433 [inline]
RIP: 0010:[<ffffffff815cf729>]  [<ffffffff815cf729>] do_blockdev_direct_IO fs/direct-io.c:1276 [inline]
RIP: 0010:[<ffffffff815cf729>]  [<ffffffff815cf729>] __blockdev_direct_IO+0x1a99/0xbd10 fs/direct-io.c:1360
RSP: 0018:ffff8801cf8af340  EFLAGS: 00010207
RAX: 090a0488916916b2 RBX: dffffc0000000000 RCX: 0000000000000000
RDX: 0000000000000000 RSI: ffffffff815cf6f1 RDI: 485024448b48b595
RBP: ffff8801cf8af660 R08: ffff8801d1a42070 R09: 0000000000000001
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000001
R13: 485024448b48b575 R14: 0000000000000000 R15: ffff8801d2a98000
FS:  0000000000a5b880(0000) GS:ffff8801db600000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020011000 CR3: 00000001d2aa7000 CR4: 00000000001606b0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Stack:
 0000000000000246 fffffbfff0604a02 ffff8801cf8af450 ffff8801d2a98098
 ffff8801cedd0000 0000000000001000 ffffffff83c78930 ffff8801d2a98079
 ffff8801cf8af550 1513558eafb46824 ffff8801cf8af4b0 0000000000000fff
Call Trace:
 [<ffffffff816de318>] ext4_direct_IO_write fs/ext4/inode.c:3507 [inline]
 [<ffffffff816de318>] ext4_direct_IO+0x978/0x29c0 fs/ext4/inode.c:3663
 [<ffffffff81411f64>] generic_file_direct_write+0x284/0x510 mm/filemap.c:2655
 [<ffffffff8141240f>] __generic_file_write_iter+0x21f/0x540 mm/filemap.c:2835
 [<ffffffff816b328d>] ext4_file_write_iter+0x63d/0xd70 fs/ext4/file.c:165
 [<ffffffff815071c7>] vfs_iter_write+0x2d7/0x450 fs/read_write.c:390
 [<ffffffff815ae4fb>] iter_file_splice_write+0x5fb/0xb30 fs/splice.c:768
 [<ffffffff815b066d>] do_splice_from fs/splice.c:870 [inline]
 [<ffffffff815b066d>] do_splice fs/splice.c:1166 [inline]
 [<ffffffff815b066d>] SYSC_splice fs/splice.c:1416 [inline]
 [<ffffffff815b066d>] SyS_splice+0xe4d/0x14d0 fs/splice.c:1399
 [<ffffffff810056ef>] do_syscall_64+0x19f/0x550 arch/x86/entry/common.c:285
 [<ffffffff82817893>] entry_SYSCALL_64_after_swapgs+0x5d/0xdb
Code: 89 84 24 98 02 00 00 48 89 f8 48 c1 e8 03 80 3c 18 00 0f 85 7a 8e 00 00 4f 8b ac e7 a8 00 00 00 49 8d 7d 20 48 89 f8 48 c1 e8 03 <80> 3c 18 00 0f 85 93 8d 00 00 4d 8b 65 20 41 f6 c4 01 0f 85 8c 
RIP  [<ffffffff815cf729>] __read_once_size include/linux/compiler.h:243 [inline]
RIP  [<ffffffff815cf729>] compound_head include/linux/page-flags.h:143 [inline]
RIP  [<ffffffff815cf729>] put_page include/linux/mm.h:782 [inline]
RIP  [<ffffffff815cf729>] dio_cleanup fs/direct-io.c:433 [inline]
RIP  [<ffffffff815cf729>] do_blockdev_direct_IO fs/direct-io.c:1276 [inline]
RIP  [<ffffffff815cf729>] __blockdev_direct_IO+0x1a99/0xbd10 fs/direct-io.c:1360
 RSP <ffff8801cf8af340>
---[ end trace 5e6925c3ad15af0d ]---