Hello,

syzbot found the following issue on:

HEAD commit: a5541c0811a0 Merge branch 'for-next/core' into for-kernelci git tree: git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci console output: https://syzkaller.appspot.com/x/log.txt?x=12b4018b880000 kernel config: https://syzkaller.appspot.com/x/.config?x=cbd4e584773e9397 dashboard link: https://syzkaller.appspot.com/bug?extid=656c0cde55a9d107a76f compiler: Debian clang version 13.0.1-++20220126092033+75e33f71c2da-1~exp1~20220126212112.63, GNU ld (GNU Binutils for Debian) 2.35.2 userspace arch: arm64

Unfortunately, I don't have any reproducer for this issue yet.

Downloadable assets: disk image: https://storage.googleapis.com/syzbot-assets/4b7702208fb9/disk-a5541c08.raw.... vmlinux: https://storage.googleapis.com/syzbot-assets/9ec0153ec051/vmlinux-a5541c08.x... kernel image: https://storage.googleapis.com/syzbot-assets/6f8725ad290a/Image-a5541c08.gz....

IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+656c0cde55a9d107a76f@syzkaller.appspotmail.com

------------[ cut here ]------------ kernel BUG at mm/vmalloc.c:2707! Internal error: Oops - BUG: 00000000f2000800 [#1] PREEMPT SMP Modules linked in: CPU: 1 PID: 9210 Comm: syz-executor.0 Not tainted 6.1.0-rc8-syzkaller-33330-ga5541c0811a0 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 pstate: 80400005 (Nzcv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : __vunmap+0x488/0x4cc mm/vmalloc.c:2707 lr : __vunmap+0x488/0x4cc mm/vmalloc.c:2707 sp : ffff800013d73ba0 x29: ffff800013d73bb0 x28: 00000000000c0002 x27: 0000000000002000 x26: ffff0000c5a44d68 x25: ffff0000c6a14080 x24: ffff00012b5ed000 x23: 0000000000000001 x22: 0000000000000200 x21: 0000000000000000 x20: ffff80000cbdd3b4 x19: ffff0001268cfa00 x18: 0000000000000000 x17: 0000000000000000 x16: ffff80000dbe6158 x15: ffff000114e01a40 x14: 0000000000000000 x13: 0000000000000000 x12: 0000000000000000 x11: ff808000084b647c x10: 0000000000000000 x9 : ffff8000084b647c x8 : ffff000114e01a40 x7 : ffff8000084bf4d4 x6 : 0000000000000000 x5 : 0000000000000080 x4 : 0000000000000000 x3 : 0000000000000000 x2 : 0000000000000000 x1 : ffff80000cbaae40 x0 : 0000000000000000 Call trace: __vunmap+0x488/0x4cc mm/vmalloc.c:2707 __vfree mm/vmalloc.c:2761 [inline] vfree+0xb0/0xfc mm/vmalloc.c:2792 snd_dma_vmalloc_free+0x20/0x30 sound/core/memalloc.c:356 snd_dma_free_pages+0x84/0xc0 sound/core/memalloc.c:127 do_free_pages sound/core/pcm_memory.c:65 [inline] snd_pcm_lib_free_pages+0xa0/0x12c sound/core/pcm_memory.c:471 do_hw_free sound/core/pcm_native.c:876 [inline] snd_pcm_release_substream+0x15c/0x1dc sound/core/pcm_native.c:2705 snd_pcm_oss_release_file sound/core/oss/pcm_oss.c:2413 [inline] snd_pcm_oss_release+0x98/0x130 sound/core/oss/pcm_oss.c:2592 __fput+0x198/0x3e4 fs/file_table.c:320 ____fput+0x20/0x30 fs/file_table.c:348 task_work_run+0x100/0x148 kernel/task_work.c:179 resume_user_mode_work include/linux/resume_user_mode.h:49 [inline] do_notify_resume+0x174/0x1f0 arch/arm64/kernel/signal.c:1132 prepare_exit_to_user_mode arch/arm64/kernel/entry-common.c:137 [inline] exit_to_user_mode arch/arm64/kernel/entry-common.c:142 [inline] el0_svc+0x9c/0x150 arch/arm64/kernel/entry-common.c:638 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655 el0t_64_sync+0x190/0x194 arch/arm64/kernel/entry.S:584 Code: 17ffff1f 97f7c16d 17ffff18 97f7c16b (d4210000) ---[ end trace 0000000000000000 ]---

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