Revision b4411616c26f26c4017b8fa4d3538b1a02028733 authored by Pavel Begunkov on 13 January 2021, 12:42:24 UTC, committed by Jens Axboe on 13 January 2021, 15:29:17 UTC
general protection fault, probably for non-canonical address
0xdffffc0000000022: 0000 [#1] KASAN: null-ptr-deref
in range [0x0000000000000110-0x0000000000000117]
RIP: 0010:io_ring_set_wakeup_flag fs/io_uring.c:6929 [inline]
RIP: 0010:io_disable_sqo_submit+0xdb/0x130 fs/io_uring.c:8891
Call Trace:
io_uring_create fs/io_uring.c:9711 [inline]
io_uring_setup+0x12b1/0x38e0 fs/io_uring.c:9739
do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46
entry_SYSCALL_64_after_hwframe+0x44/0xa9
io_disable_sqo_submit() might be called before user rings were
allocated, don't do io_ring_set_wakeup_flag() in those cases.
Reported-by: syzbot+ab412638aeb652ded540@syzkaller.appspotmail.com
Fixes: d9d05217cb69 ("io_uring: stop SQPOLL submit on creator's death")
Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
1 parent 621fadc
| File | Mode | Size |
|---|---|---|
| include | ||
| .gitignore | -rw-r--r-- | 94 bytes |
| Kconfig | -rw-r--r-- | 7.7 KB |
| Makefile | -rw-r--r-- | 2.9 KB |
| default_cpio_list | -rw-r--r-- | 153 bytes |
| gen_init_cpio.c | -rw-r--r-- | 12.8 KB |
| gen_initramfs.sh | -rwxr-xr-x | 5.7 KB |
| initramfs_data.S | -rw-r--r-- | 1.2 KB |
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