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BUG: KASAN: stack-out-of-bounds in iov_iter_revert+0x269/0xa30 lib/iov_iter.c:1144
Read of size 8 at addr ffffc9000022ef38 by task syz-executor921/366
CPU: 0 PID: 366 Comm: syz-executor921 Not tainted 5.10.75-syzkaller-01082-g234d53d2bb60 #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_lvl+0x1e2/0x24b lib/dump_stack.c:118
print_address_description+0x8d/0x3d0 mm/kasan/report.c:233
__kasan_report+0x142/0x220 mm/kasan/report.c:419
kasan_report+0x51/0x70 mm/kasan/report.c:436
__asan_report_load8_noabort+0x14/0x20 mm/kasan/report_generic.c:309
iov_iter_revert+0x269/0xa30 lib/iov_iter.c:1144
io_write+0xaf1/0xf80 fs/io_uring.c:3615
io_issue_sqe+0x1397/0xfc10 fs/io_uring.c:6030
__io_queue_sqe+0x2cf/0x2fa0 fs/io_uring.c:6352
io_queue_sqe+0x295/0x1180 fs/io_uring.c:6418
io_submit_sqe+0x385/0xfd0 fs/io_uring.c:6487
io_submit_sqes+0x1050/0x2da0 fs/io_uring.c:6715
__do_sys_io_uring_enter fs/io_uring.c:9110 [inline]
__se_sys_io_uring_enter+0x322/0x12b0 fs/io_uring.c:9052
__x64_sys_io_uring_enter+0xe5/0x100 fs/io_uring.c:9052
do_syscall_64+0x31/0x70 arch/x86/entry/common.c:46
entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x7fad2a468a59
Code: 28 c3 e8 1a 15 00 00 66 2e 0f 1f 84 00 00 00 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 c0 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffcb1010af8 EFLAGS: 00000246 ORIG_RAX: 00000000000001aa
RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 00007fad2a468a59
RDX: 0000000000000000 RSI: 0000000000007cdc RDI: 0000000000000004
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffcb1010b20
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
addr ffffc9000022ef38 is located in stack of task syz-executor921/366 at offset 24 in frame:
io_write+0x0/0xf80 include/trace/events/io_uring.h:360
this frame has 3 objects:
[32, 160) 'inline_vecs'
[192, 200) 'iovec'
[224, 264) '__iter'
Memory state around the buggy address:
ffffc9000022ee00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
ffffc9000022ee80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
>ffffc9000022ef00: 00 00 00 00 f1 f1 f1 f1 00 00 00 00 00 00 00 00