From: syzbot <[email protected]>
To: [email protected], [email protected],
[email protected], [email protected],
[email protected], [email protected]
Subject: memory leak in io_submit_sqes
Date: Tue, 11 Aug 2020 06:57:17 -0700 [thread overview]
Message-ID: <[email protected]> (raw)
Hello,
syzbot found the following issue on:
HEAD commit: d6efb3ac Merge tag 'tty-5.9-rc1' of git://git.kernel.org/p..
git tree: upstream
console output: https://syzkaller.appspot.com/x/log.txt?x=13cb0762900000
kernel config: https://syzkaller.appspot.com/x/.config?x=42163327839348a9
dashboard link: https://syzkaller.appspot.com/bug?extid=a730016dc0bdce4f6ff5
compiler: gcc (GCC) 10.1.0-syz 20200507
syz repro: https://syzkaller.appspot.com/x/repro.syz?x=16e877dc900000
C reproducer: https://syzkaller.appspot.com/x/repro.c?x=1608291a900000
IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: [email protected]
executing program
executing program
executing program
executing program
executing program
BUG: memory leak
unreferenced object 0xffff888124949100 (size 256):
comm "syz-executor808", pid 6480, jiffies 4294949911 (age 33.960s)
hex dump (first 32 bytes):
00 78 74 2a 81 88 ff ff 00 00 00 00 00 00 00 00 .xt*............
90 b0 51 81 ff ff ff ff 00 00 00 00 00 00 00 00 ..Q.............
backtrace:
[<0000000084e46f34>] io_alloc_req fs/io_uring.c:1503 [inline]
[<0000000084e46f34>] io_submit_sqes+0x5dc/0xc00 fs/io_uring.c:6306
[<000000006d4e19eb>] __do_sys_io_uring_enter+0x582/0x830 fs/io_uring.c:8036
[<00000000a4116b07>] do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46
[<0000000067b2aefc>] entry_SYSCALL_64_after_hwframe+0x44/0xa9
BUG: memory leak
unreferenced object 0xffff88811751d200 (size 96):
comm "syz-executor808", pid 6480, jiffies 4294949911 (age 33.960s)
hex dump (first 32 bytes):
00 78 74 2a 81 88 ff ff 00 00 00 00 00 00 00 00 .xt*............
0e 01 00 00 00 00 75 22 00 00 00 00 00 0f 1f 04 ......u"........
backtrace:
[<00000000073ea2ba>] kmalloc include/linux/slab.h:555 [inline]
[<00000000073ea2ba>] io_arm_poll_handler fs/io_uring.c:4773 [inline]
[<00000000073ea2ba>] __io_queue_sqe+0x445/0x6b0 fs/io_uring.c:5988
[<000000001551bde0>] io_queue_sqe+0x309/0x550 fs/io_uring.c:6060
[<000000002dfb908f>] io_submit_sqe fs/io_uring.c:6130 [inline]
[<000000002dfb908f>] io_submit_sqes+0x8b8/0xc00 fs/io_uring.c:6327
[<000000006d4e19eb>] __do_sys_io_uring_enter+0x582/0x830 fs/io_uring.c:8036
[<00000000a4116b07>] do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46
[<0000000067b2aefc>] entry_SYSCALL_64_after_hwframe+0x44/0xa9
---
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next reply other threads:[~2020-08-11 13:57 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-08-11 13:57 syzbot [this message]
2020-08-11 14:59 ` memory leak in io_submit_sqes Jens Axboe
2020-08-11 15:23 ` Jens Axboe
2020-08-11 15:49 ` Jens Axboe
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