R13: 0000000000000004 R14: 0000000020000248 R15: 0000000000000003 FAT-fs (loop7): Unrecognized mount option "@" or missing value ------------[ cut here ]------------ refcount_t: underflow; use-after-free. WARNING: CPU: 0 PID: 19957 at lib/refcount.c:28 refcount_warn_saturate+0x103/0x1f0 lib/refcount.c:28 Modules linked in: CPU: 0 PID: 19957 Comm: syz-executor.1 Not tainted 5.10.45 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.14.0-0-g155821a1990b-prebuilt.qemu.org 04/01/2014 RIP: 0010:refcount_warn_saturate+0x103/0x1f0 lib/refcount.c:28 Code: 1d f4 a4 54 03 31 ff 89 de e8 f9 73 51 ff 84 db 75 a3 e8 c0 7a 51 ff 48 c7 c7 20 34 3b 84 c6 05 d4 a4 54 03 01 e8 0d 97 c8 01 <0f> 0b eb 87 e8 a4 7a 51 ff 0f b6 1d bd a4 54 03 31 ff 89 de e8 c4 RSP: 0018:ffff8880682479f8 EFLAGS: 00010286 RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000 RDX: 0000000000040000 RSI: ffffffff812943f3 RDI: ffffed100d048f31 RBP: ffff888018ac955c R08: 0000000000000001 R09: ffff88806ce1ff9b R10: 0000000000000000 R11: 0000000000000001 R12: ffff888018ac955c R13: 0000000000002844 R14: ffff888018ac9918 R15: 0000000000000000 FS: 00007fdf15e54700(0000) GS:ffff88806ce00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000000052f770 CR3: 000000006035c000 CR4: 0000000000350ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000dd060a Call Trace: __refcount_sub_and_test include/linux/refcount.h:283 [inline] __refcount_dec_and_test include/linux/refcount.h:315 [inline] refcount_dec_and_test include/linux/refcount.h:333 [inline] io_put_req+0xc6/0x100 fs/io_uring.c:2220 __io_queue_sqe+0x1df/0xd00 fs/io_uring.c:6365 io_queue_sqe+0x5bc/0x1020 fs/io_uring.c:6410 io_queue_link_head fs/io_uring.c:6421 [inline] io_submit_sqe fs/io_uring.c:6462 [inline] io_submit_sqes+0x176b/0x2300 fs/io_uring.c:6707 __do_sys_io_uring_enter+0x1092/0x1910 fs/io_uring.c:9100 do_syscall_64+0x33/0x40 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x466609 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 bc ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007fdf15e54188 EFLAGS: 00000246 ORIG_RAX: 00000000000001aa RAX: ffffffffffffffda RBX: 000000000056c038 RCX: 0000000000466609 RDX: 0000000000000000 RSI: 00000000000076d3 RDI: 0000000000000003 RBP: 00000000004bfcb9 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000056c038 R13: 00007ffebcd42b3f R14: 00007fdf15e54300 R15: 0000000000022000 irq event stamp: 543 hardirqs last enabled at (549): [] console_trylock_spinning kernel/printk/printk.c:1847 [inline] hardirqs last enabled at (549): [] vprintk_emit+0x482/0x4d0 kernel/printk/printk.c:2051 hardirqs last disabled at (554): [] console_trylock_spinning kernel/printk/printk.c:1826 [inline] hardirqs last disabled at (554): [] vprintk_emit+0x414/0x4d0 kernel/printk/printk.c:2051 softirqs last enabled at (242): [] asm_call_irq_on_stack+0x12/0x20 softirqs last disabled at (233): [] asm_call_irq_on_stack+0x12/0x20 ---[ end trace e68f0a6a38fda212 ]--- EXT4-fs error (device loop2): ext4_fill_super:4947: inode #2: comm syz-executor.2: casefold flag without casefold feature EXT4-fs (loop2): corrupt root inode, run e2fsck EXT4-fs (loop2): mount failed FAULT_INJECTION: forcing a failure. name failslab, interval 1, probability 0, space 0, times 0 CPU: 1 PID: 19988 Comm: syz-executor.2 Tainted: G W 5.10.45 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.14.0-0-g155821a1990b-prebuilt.qemu.org 04/01/2014 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x107/0x163 lib/dump_stack.c:118 fail_dump lib/fault-inject.c:52 [inline] should_fail.cold+0x5/0xa lib/fault-inject.c:146 should_failslab+0x5/0x10 mm/slab_common.c:1194 slab_pre_alloc_hook mm/slab.h:516 [inline] slab_alloc_node mm/slub.c:2813 [inline] slab_alloc mm/slub.c:2896 [inline] kmem_cache_alloc+0x5b/0x350 mm/slub.c:2901 mem_pool_alloc mm/kmemleak.c:423 [inline] create_object.isra.0+0x3a/0xa20 mm/kmemleak.c:578 kmemleak_alloc_recursive include/linux/kmemleak.h:43 [inline] slab_post_alloc_hook mm/slab.h:535 [inline] slab_alloc_node mm/slub.c:2888 [inline] slab_alloc mm/slub.c:2896 [inline] kmem_cache_alloc_trace+0x151/0x360 mm/slub.c:2913 kmalloc include/linux/slab.h:552 [inline] kzalloc include/linux/slab.h:664 [inline] kobject_uevent_env+0x22b/0xf90 lib/kobject_uevent.c:524 loop_set_size drivers/block/loop.c:259 [inline] loop_configure+0x1163/0x1480 drivers/block/loop.c:1169 lo_ioctl+0xa6e/0x1760 drivers/block/loop.c:1691 __blkdev_driver_ioctl block/ioctl.c:237 [inline] blkdev_ioctl+0x28d/0x700 block/ioctl.c:632 block_ioctl+0xf9/0x140 fs/block_dev.c:1893 vfs_ioctl fs/ioctl.c:48 [inline] __do_sys_ioctl fs/ioctl.c:753 [inline] __se_sys_ioctl fs/ioctl.c:739 [inline] __x64_sys_ioctl+0x196/0x210 fs/ioctl.c:739 do_syscall_64+0x33/0x40 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x4663c7 Code: 3c 1c 48 f7 d8 49 39 c4 72 b8 e8 84 49 02 00 85 c0 78 bd 48 83 c4 08 4c 89 e0 5b 41 5c c3 0f 1f 44 00 00 b8 10 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 bc ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f404a204f48 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00000000004afcc0 RCX: 00000000004663c7 RDX: 0000000000000004 RSI: 0000000000004c00 RDI: 0000000000000005 RBP: 0000000000000005 R08: 0000000000000000 R09: ffffffffffffffff R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000004 R13: 0000000000000004 R14: 0000000020000248 R15: 0000000000000003 EXT4-fs error (device loop2): ext4_fill_super:4947: inode #2: comm syz-executor.2: casefold flag without casefold feature EXT4-fs (loop2): corrupt root inode, run e2fsck EXT4-fs (loop2): mount failed netlink: 56 bytes leftover after parsing attributes in process `syz-executor.0'. EXT4-fs (loop4): Unrecognized mount option "ivqseryTӅ+xqO'qM?aZo9Pf4m#b=" or missing value EXT4-fs (loop4): Unrecognized mount option "ivqseryTӅ+xqO'qM?aZo9Pf4m#b=" or missing value