[syzbot] [sound?] BUG: sleeping function called from invalid context in vfree

[syzbot <syzbot+351f8764833934c68836@syzkaller.appspotmail.com>]

Hello,

syzbot found the following issue on:

HEAD commit:    9f16d5e6f220 Merge tag 'for-linus' of git://git.kernel.org..
git tree:       upstream
console output: https://syzkaller.appspot.com/x/log.txt?x=154bc778580000
kernel config:  https://syzkaller.appspot.com/x/.config?x=47cc5fc1922531f
dashboard link: https://syzkaller.appspot.com/bug?extid=351f8764833934c68836
compiler:       gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40
userspace arch: i386

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

Downloadable assets:
disk image (non-bootable): https://storage.googleapis.com/syzbot-assets/7feb34a89c2a/non_bootable_disk-9f16d5e6.raw.xz
vmlinux: https://storage.googleapis.com/syzbot-assets/dddd5525a287/vmlinux-9f16d5e6.xz
kernel image: https://storage.googleapis.com/syzbot-assets/7c9e082ba50b/bzImage-9f16d5e6.xz

IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+351f8764833934c68836@syzkaller.appspotmail.com

BUG: sleeping function called from invalid context at mm/vmalloc.c:3359
in_atomic(): 1, irqs_disabled(): 1, non_block: 0, pid: 6938, name: syz.1.230
preempt_count: 1, expected: 0
RCU nest depth: 0, expected: 0
2 locks held by syz.1.230/6938:
 #0: ffff88804a2d2968 (&rmidi->open_mutex){+.+.}-{4:4}, at: class_mutex_constructor include/linux/mutex.h:201 [inline]
 #0: ffff88804a2d2968 (&rmidi->open_mutex){+.+.}-{4:4}, at: snd_rawmidi_output_params+0x51/0x1c0 sound/core/rawmidi.c:748
 #1: ffff888045e5ed48 (&substream->lock){....}-{3:3}, at: spin_lock_irq include/linux/spinlock.h:376 [inline]
 #1: ffff888045e5ed48 (&substream->lock){....}-{3:3}, at: class_spinlock_irq_constructor include/linux/spinlock.h:565 [inline]
 #1: ffff888045e5ed48 (&substream->lock){....}-{3:3}, at: resize_runtime_buffer+0x243/0x530 sound/core/rawmidi.c:727
irq event stamp: 1218
hardirqs last  enabled at (1217): [<ffffffff8b189e32>] __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:151 [inline]
hardirqs last  enabled at (1217): [<ffffffff8b189e32>] _raw_spin_unlock_irqrestore+0x52/0x80 kernel/locking/spinlock.c:194
hardirqs last disabled at (1218): [<ffffffff8b189ad5>] __raw_spin_lock_irq include/linux/spinlock_api_smp.h:117 [inline]
hardirqs last disabled at (1218): [<ffffffff8b189ad5>] _raw_spin_lock_irq+0x45/0x50 kernel/locking/spinlock.c:170
softirqs last  enabled at (0): [<ffffffff814e57ac>] copy_process+0x1e9c/0x6f20 kernel/fork.c:2321
softirqs last disabled at (0): [<0000000000000000>] 0x0
Preemption disabled at:
[<0000000000000000>] 0x0
CPU: 1 UID: 0 PID: 6938 Comm: syz.1.230 Not tainted 6.12.0-syzkaller-09073-g9f16d5e6f220 #0
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:94 [inline]
 dump_stack_lvl+0x116/0x1f0 lib/dump_stack.c:120
 __might_resched+0x3c0/0x5e0 kernel/sched/core.c:8758
 vfree+0x75/0x890 mm/vmalloc.c:3359
 kvfree+0x33/0x50 mm/util.c:699
 resize_runtime_buffer+0x3a7/0x530 sound/core/rawmidi.c:736
 snd_rawmidi_output_params+0xeb/0x1c0 sound/core/rawmidi.c:751
 snd_rawmidi_ioctl_params_compat sound/core/rawmidi_compat.c:37 [inline]
 snd_rawmidi_ioctl_compat+0x3ac/0x3e0 sound/core/rawmidi_compat.c:120
 __do_compat_sys_ioctl+0x1cb/0x2c0 fs/ioctl.c:1004
 do_syscall_32_irqs_on arch/x86/entry/common.c:165 [inline]
 __do_fast_syscall_32+0x73/0x120 arch/x86/entry/common.c:386
 do_fast_syscall_32+0x32/0x80 arch/x86/entry/common.c:411
 entry_SYSENTER_compat_after_hwframe+0x84/0x8e
RIP: 0023:0xf7f01579
Code: b8 01 10 06 03 74 b4 01 10 07 03 74 b0 01 10 08 03 74 d8 01 00 00 00 00 00 00 00 00 00 00 00 00 00 51 52 55 89 e5 0f 34 cd 80 <5d> 5a 59 c3 90 90 90 90 8d b4 26 00 00 00 00 8d b4 26 00 00 00 00
RSP: 002b:00000000f506555c EFLAGS: 00000296 ORIG_RAX: 0000000000000036
RAX: ffffffffffffffda RBX: 0000000000000007 RCX: 00000000c0205710
RDX: 0000000020000100 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000296 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
 </TASK>
----------------
Code disassembly (best guess), 2 bytes skipped:
   0:	10 06                	adc    %al,(%rsi)
   2:	03 74 b4 01          	add    0x1(%rsp,%rsi,4),%esi
   6:	10 07                	adc    %al,(%rdi)
   8:	03 74 b0 01          	add    0x1(%rax,%rsi,4),%esi
   c:	10 08                	adc    %cl,(%rax)
   e:	03 74 d8 01          	add    0x1(%rax,%rbx,8),%esi
  1e:	00 51 52             	add    %dl,0x52(%rcx)
  21:	55                   	push   %rbp
  22:	89 e5                	mov    %esp,%ebp
  24:	0f 34                	sysenter
  26:	cd 80                	int    $0x80
* 28:	5d                   	pop    %rbp <-- trapping instruction
  29:	5a                   	pop    %rdx
  2a:	59                   	pop    %rcx
  2b:	c3                   	ret
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	90                   	nop
  2f:	90                   	nop
  30:	8d b4 26 00 00 00 00 	lea    0x0(%rsi,%riz,1),%esi
  37:	8d b4 26 00 00 00 00 	lea    0x0(%rsi,%riz,1),%esi


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