Hello, syzbot found the following issue on: HEAD commit: 97e5bf60 Merge branch 'for-5.13-fixes' of git://git.kernel.. git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=17a782d3d00000 kernel config: https://syzkaller.appspot.com/x/.config?x=b8c23f7848d1c696 dashboard link: https://syzkaller.appspot.com/bug?extid=189b24ff132397acb8fd syz repro: https://syzkaller.appspot.com/x/repro.syz?x=122ff517d00000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=12cf7cb7d00000 IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+189b24ff132397acb8fd@xxxxxxxxxxxxxxxxxxxxxxxxx executing program BUG: memory leak unreferenced object 0xffff888117747500 (size 232): comm "syz-executor793", pid 8437, jiffies 4294941760 (age 14.380s) hex dump (first 32 bytes): 00 a2 11 02 81 88 ff ff 18 4e 6f 16 81 88 ff ff .........No..... 38 20 00 40 00 00 00 00 00 00 00 00 00 00 00 00 8 .@............ backtrace: [<ffffffff81613299>] io_alloc_req fs/io_uring.c:1707 [inline] [<ffffffff81613299>] io_submit_sqes+0x6c9/0x23b0 fs/io_uring.c:6721 [<ffffffff81615798>] __do_sys_io_uring_enter+0x818/0xf50 fs/io_uring.c:9319 [<ffffffff8435309a>] do_syscall_64+0x3a/0xb0 arch/x86/entry/common.c:47 [<ffffffff84400068>] entry_SYSCALL_64_after_hwframe+0x44/0xae BUG: memory leak unreferenced object 0xffff888117747400 (size 232): comm "syz-executor793", pid 8437, jiffies 4294941760 (age 14.380s) hex dump (first 32 bytes): 00 a2 11 02 81 88 ff ff 18 4e 6f 16 81 88 ff ff .........No..... 38 20 00 40 00 00 00 00 00 00 00 00 00 00 00 00 8 .@............ backtrace: [<ffffffff81613299>] io_alloc_req fs/io_uring.c:1707 [inline] [<ffffffff81613299>] io_submit_sqes+0x6c9/0x23b0 fs/io_uring.c:6721 [<ffffffff81615798>] __do_sys_io_uring_enter+0x818/0xf50 fs/io_uring.c:9319 [<ffffffff8435309a>] do_syscall_64+0x3a/0xb0 arch/x86/entry/common.c:47 [<ffffffff84400068>] entry_SYSCALL_64_after_hwframe+0x44/0xae BUG: memory leak unreferenced object 0xffff888117747300 (size 232): comm "syz-executor793", pid 8437, jiffies 4294941760 (age 14.380s) hex dump (first 32 bytes): 00 a2 11 02 81 88 ff ff 18 4e 6f 16 81 88 ff ff .........No..... 38 20 00 40 00 00 00 00 00 00 00 00 00 00 00 00 8 .@............ backtrace: [<ffffffff81613299>] io_alloc_req fs/io_uring.c:1707 [inline] [<ffffffff81613299>] io_submit_sqes+0x6c9/0x23b0 fs/io_uring.c:6721 [<ffffffff81615798>] __do_sys_io_uring_enter+0x818/0xf50 fs/io_uring.c:9319 [<ffffffff8435309a>] do_syscall_64+0x3a/0xb0 arch/x86/entry/common.c:47 [<ffffffff84400068>] entry_SYSCALL_64_after_hwframe+0x44/0xae BUG: memory leak unreferenced object 0xffff888117747200 (size 232): comm "syz-executor793", pid 8437, jiffies 4294941760 (age 14.380s) hex dump (first 32 bytes): 00 a2 11 02 81 88 ff ff 18 4e 6f 16 81 88 ff ff .........No..... 38 20 00 40 00 00 00 00 00 00 00 00 00 00 00 00 8 .@............ backtrace: [<ffffffff81613299>] io_alloc_req fs/io_uring.c:1707 [inline] [<ffffffff81613299>] io_submit_sqes+0x6c9/0x23b0 fs/io_uring.c:6721 [<ffffffff81615798>] __do_sys_io_uring_enter+0x818/0xf50 fs/io_uring.c:9319 [<ffffffff8435309a>] do_syscall_64+0x3a/0xb0 arch/x86/entry/common.c:47 [<ffffffff84400068>] entry_SYSCALL_64_after_hwframe+0x44/0xae BUG: memory leak unreferenced object 0xffff888117747100 (size 232): comm "syz-executor793", pid 8437, jiffies 4294941760 (age 14.380s) hex dump (first 32 bytes): 00 a2 11 02 81 88 ff ff 18 4e 6f 16 81 88 ff ff .........No..... 38 20 00 40 00 00 00 00 00 00 00 00 00 00 00 00 8 .@............ backtrace: [<ffffffff81613299>] io_alloc_req fs/io_uring.c:1707 [inline] [<ffffffff81613299>] io_submit_sqes+0x6c9/0x23b0 fs/io_uring.c:6721 [<ffffffff81615798>] __do_sys_io_uring_enter+0x818/0xf50 fs/io_uring.c:9319 [<ffffffff8435309a>] do_syscall_64+0x3a/0xb0 arch/x86/entry/common.c:47 [<ffffffff84400068>] entry_SYSCALL_64_after_hwframe+0x44/0xae BUG: memory leak unreferenced object 0xffff88811774acc0 (size 64): comm "syz-executor793", pid 8437, jiffies 4294941760 (age 14.380s) hex dump (first 32 bytes): 00 00 00 00 00 00 00 00 00 4e 6f 16 81 88 ff ff .........No..... 38 20 00 40 00 00 00 00 00 00 00 00 00 00 00 00 8 .@............ backtrace: [<ffffffff81607a9a>] kmalloc include/linux/slab.h:556 [inline] [<ffffffff81607a9a>] __io_queue_proc+0x10a/0x1b0 fs/io_uring.c:5027 [<ffffffff824b8aa6>] poll_wait include/linux/poll.h:51 [inline] [<ffffffff824b8aa6>] n_tty_poll+0x76/0x3a0 drivers/tty/n_tty.c:2429 [<ffffffff824b3319>] tty_poll+0x89/0xc0 drivers/tty/tty_io.c:2231 [<ffffffff81600e79>] vfs_poll include/linux/poll.h:90 [inline] [<ffffffff81600e79>] __io_arm_poll_handler+0xb9/0x2b0 fs/io_uring.c:5118 [<ffffffff81607137>] io_poll_add.constprop.0+0x47/0x180 fs/io_uring.c:5402 [<ffffffff8160f6cf>] io_issue_sqe+0x19f/0x2880 fs/io_uring.c:6126 [<ffffffff81611e4a>] __io_queue_sqe+0x9a/0x620 fs/io_uring.c:6414 [<ffffffff81612a65>] io_queue_sqe+0x275/0x3e0 fs/io_uring.c:6463 [<ffffffff81614bf8>] io_submit_sqe fs/io_uring.c:6626 [inline] [<ffffffff81614bf8>] io_submit_sqes+0x2028/0x23b0 fs/io_uring.c:6734 [<ffffffff81615798>] __do_sys_io_uring_enter+0x818/0xf50 fs/io_uring.c:9319 [<ffffffff8435309a>] do_syscall_64+0x3a/0xb0 arch/x86/entry/common.c:47 [<ffffffff84400068>] entry_SYSCALL_64_after_hwframe+0x44/0xae --- This report is generated by a bot. It may contain errors. See https://goo.gl/tpsmEJ for more information about syzbot. syzbot engineers can be reached at syzkaller@xxxxxxxxxxxxxxxx. syzbot will keep track of this issue. See: https://goo.gl/tpsmEJ#status for how to communicate with syzbot. syzbot can test patches for this issue, for details see: https://goo.gl/tpsmEJ#testing-patches
