Re: [syzbot] [net?] WARNING in vmxnet3_probe_device

[syzbot <syzbot+e39090bc9b3cf457717f@syzkaller.appspotmail.com>]

syzbot has found a reproducer for the following issue on:

HEAD commit:    c4e9f74da438 Merge tag 'v7.3-p5' of git://git.kernel.org/p..
git tree:       upstream
console output: https://syzkaller.appspot.com/x/log.txt?x=13688405580000
kernel config:  https://syzkaller.appspot.com/x/.config?x=2b924f079099ba6e
dashboard link: https://syzkaller.appspot.com/bug?extid=e39090bc9b3cf457717f
compiler:       Debian clang version 22.1.8 (++20260613092233+e80beda6e255-1~exp1~20260613092250.77), Debian LLD 22.1.8
syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=17c1b4c9580000
C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=144d7805580000

Downloadable assets:
disk image (non-bootable): https://storage.googleapis.com/syzbot-assets/d900f083ada3/non_bootable_disk-c4e9f74d.raw.xz
vmlinux: https://storage.googleapis.com/syzbot-assets/1fb74cbe085d/vmlinux-c4e9f74d.xz
kernel image: https://storage.googleapis.com/syzbot-assets/ee8335337423/bzImage-c4e9f74d.xz

IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+e39090bc9b3cf457717f@syzkaller.appspotmail.com

------------[ cut here ]------------
vmxnet3 0000:00:00.0: rejecting DMA map of vmalloc memory
WARNING: ./include/linux/dma-mapping.h:532 at dma_map_single_attrs include/linux/dma-mapping.h:531 [inline], CPU#0: syz.0.17/5475
WARNING: ./include/linux/dma-mapping.h:532 at vmxnet3_probe_device+0xab8/0x2e70 drivers/net/vmxnet3/vmxnet3_drv.c:4047, CPU#0: syz.0.17/5475
Modules linked in:
CPU: 0 UID: 0 PID: 5475 Comm: syz.0.17 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
RIP: 0010:dma_map_single_attrs include/linux/dma-mapping.h:531 [inline]
RIP: 0010:vmxnet3_probe_device+0xb32/0x2e70 drivers/net/vmxnet3/vmxnet3_drv.c:4047
Code: 89 ff e8 e1 b3 f6 fa 4d 8b 2f eb 15 e8 37 0c 85 fa 41 bf 04 00 00 00 41 b6 03 eb 7d e8 27 0c 85 fa 48 89 df 4c 89 f6 4c 89 ea <67> 48 0f b9 3a 48 8b 04 24 48 05 88 c4 00 00 49 89 c6 48 c1 e8 03
RSP: 0018:ffffc900046777c0 EFLAGS: 00010246
RAX: 1ffff11003ece01a RBX: ffffffff9087fdf0 RCX: dffffc0000000000
RDX: ffff88801f3c32a0 RSI: ffffffff8fa99b40 RDI: ffffffff9087fdf0
RBP: ffffc90004677950 R08: 0000000000000003 R09: 0000000000000000
R10: dffffc0000000000 R11: ffffed1003ece0b3 R12: 0000000000000001
R13: ffff88801f3c32a0 R14: ffffffff8fa99b40 R15: ffff88801f6700d0
FS:  00007f931f3316c0(0000) GS:ffff88808c2c0000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000000 CR3: 0000000043cf1000 CR4: 0000000000352ef0
Call Trace:
 <TASK>
 local_pci_probe drivers/pci/pci-driver.c:354 [inline]
 pci_call_probe drivers/pci/pci-driver.c:416 [inline]
 __pci_device_probe drivers/pci/pci-driver.c:478 [inline]
 pci_device_probe+0x48e/0xd10 drivers/pci/pci-driver.c:512
 call_driver_probe drivers/base/dd.c:-1 [inline]
 really_probe+0x254/0xae0 drivers/base/dd.c:706
 __driver_probe_device+0x1e8/0x360 drivers/base/dd.c:868
 device_driver_attach+0xe0/0x1d0 drivers/base/dd.c:1203
 bind_store+0x1d0/0x220 drivers/base/bus.c:267
 kernfs_fop_write_iter+0x3a4/0x540 fs/kernfs/file.c:345
 new_sync_write fs/read_write.c:595 [inline]
 vfs_write+0x612/0xba0 fs/read_write.c:687
 ksys_write+0x150/0x270 fs/read_write.c:739
 do_syscall_x64 arch/x86/entry/syscall_64.c:61 [inline]
 do_syscall_64+0x166/0x520 arch/x86/entry/syscall_64.c:84
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f931e39e159
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 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 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f931f331028 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f931e625fa0 RCX: 00007f931e39e159
RDX: 000000000000000c RSI: 0000200000000240 RDI: 0000000000000006
RBP: 00007f931f331090 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001
R13: 00007f931e626038 R14: 00007f931e625fa0 R15: 00007fff4d3aed68
 </TASK>
----------------
Code disassembly (best guess):
   0:	89 ff                	mov    %edi,%edi
   2:	e8 e1 b3 f6 fa       	call   0xfaf6b3e8
   7:	4d 8b 2f             	mov    (%r15),%r13
   a:	eb 15                	jmp    0x21
   c:	e8 37 0c 85 fa       	call   0xfa850c48
  11:	41 bf 04 00 00 00    	mov    $0x4,%r15d
  17:	41 b6 03             	mov    $0x3,%r14b
  1a:	eb 7d                	jmp    0x99
  1c:	e8 27 0c 85 fa       	call   0xfa850c48
  21:	48 89 df             	mov    %rbx,%rdi
  24:	4c 89 f6             	mov    %r14,%rsi
  27:	4c 89 ea             	mov    %r13,%rdx
* 2a:	67 48 0f b9 3a       	ud1    (%edx),%rdi <-- trapping instruction
  2f:	48 8b 04 24          	mov    (%rsp),%rax
  33:	48 05 88 c4 00 00    	add    $0xc488,%rax
  39:	49 89 c6             	mov    %rax,%r14
  3c:	48 c1 e8 03          	shr    $0x3,%rax


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