Re: [syzbot] [net?] [usb?] BUG: using smp_processor_id() in preemptible code in tx_complete

syzbot <[email protected]>
Newsgroups org.kernel.vger.linux-usb,org.kernel.vger.linux-kernel,org.kernel.vger.netdev
Message-ID <[email protected]> 
syzbot has found a reproducer for the following issue on:

HEAD commit:    a59f57e2aa12 Merge tag 'watchdog-for-v7.2-rc7' of git://gi..
git tree:       upstream
console output: https://syzkaller.appspot.com/x/log.txt?x=127defb9580000
kernel config:  https://syzkaller.appspot.com/x/.config?x=d07fbc6821d72a61
dashboard link: https://syzkaller.appspot.com/bug?extid=04cd90bb99c6ef81a65d
compiler:       gcc (Debian 14.2.0-19) 14.2.0, GNU ld (GNU Binutils for Debian) 2.44
C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=17106fb9580000

IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: [email protected]

BUG: using smp_processor_id() in preemptible [00000000] code: vhci_rx/6048
caller is tx_complete+0x237/0x770 drivers/net/usb/usbnet.c:1301
CPU: 2 UID: 0 PID: 6048 Comm: vhci_rx 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
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:94 [inline]
 dump_stack_lvl+0x100/0x190 lib/dump_stack.c:120
 check_preemption_disabled+0xd8/0xe0 lib/smp_processor_id.c:47
 tx_complete+0x237/0x770 drivers/net/usb/usbnet.c:1301
 __usb_hcd_giveback_urb+0x38d/0x610 drivers/usb/core/hcd.c:1657
 usb_hcd_giveback_urb+0x3ca/0x4a0 drivers/usb/core/hcd.c:1741
 vhci_recv_ret_submit drivers/usb/usbip/vhci_rx.c:107 [inline]
 vhci_rx_pdu drivers/usb/usbip/vhci_rx.c:242 [inline]
 vhci_rx_loop+0x60e/0xa60 drivers/usb/usbip/vhci_rx.c:265
 kthread+0x370/0x450 kernel/kthread.c:436
 ret_from_fork+0x72b/0xd50 arch/x86/kernel/process.c:158
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
 </TASK>
BUG: using smp_processor_id() in preemptible [00000000] code: vhci_rx/6048
caller is tx_complete+0x237/0x770 drivers/net/usb/usbnet.c:1301
CPU: 1 UID: 0 PID: 6048 Comm: vhci_rx 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
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:94 [inline]
 dump_stack_lvl+0x100/0x190 lib/dump_stack.c:120
 check_preemption_disabled+0xd8/0xe0 lib/smp_processor_id.c:47
 tx_complete+0x237/0x770 drivers/net/usb/usbnet.c:1301
 __usb_hcd_giveback_urb+0x38d/0x610 drivers/usb/core/hcd.c:1657
 usb_hcd_giveback_urb+0x3ca/0x4a0 drivers/usb/core/hcd.c:1741
 vhci_recv_ret_submit drivers/usb/usbip/vhci_rx.c:107 [inline]
 vhci_rx_pdu drivers/usb/usbip/vhci_rx.c:242 [inline]
 vhci_rx_loop+0x60e/0xa60 drivers/usb/usbip/vhci_rx.c:265
 kthread+0x370/0x450 kernel/kthread.c:436
 ret_from_fork+0x72b/0xd50 arch/x86/kernel/process.c:158
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
 </TASK>
BUG: using smp_processor_id() in preemptible [00000000] code: vhci_rx/6048
caller is tx_complete+0x237/0x770 drivers/net/usb/usbnet.c:1301
CPU: 3 UID: 0 PID: 6048 Comm: vhci_rx 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
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:94 [inline]
 dump_stack_lvl+0x100/0x190 lib/dump_stack.c:120
 check_preemption_disabled+0xd8/0xe0 lib/smp_processor_id.c:47
 tx_complete+0x237/0x770 drivers/net/usb/usbnet.c:1301
 __usb_hcd_giveback_urb+0x38d/0x610 drivers/usb/core/hcd.c:1657
 usb_hcd_giveback_urb+0x3ca/0x4a0 drivers/usb/core/hcd.c:1741
 vhci_recv_ret_submit drivers/usb/usbip/vhci_rx.c:107 [inline]
 vhci_rx_pdu drivers/usb/usbip/vhci_rx.c:242 [inline]
 vhci_rx_loop+0x60e/0xa60 drivers/usb/usbip/vhci_rx.c:265
 kthread+0x370/0x450 kernel/kthread.c:436
 ret_from_fork+0x72b/0xd50 arch/x86/kernel/process.c:158
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
 </TASK>
BUG: using smp_processor_id() in preemptible [00000000] code: vhci_rx/6048
caller is tx_complete+0x237/0x770 drivers/net/usb/usbnet.c:1301
CPU: 0 UID: 0 PID: 6048 Comm: vhci_rx 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
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:94 [inline]
 dump_stack_lvl+0x100/0x190 lib/dump_stack.c:120
 check_preemption_disabled+0xd8/0xe0 lib/smp_processor_id.c:47
 tx_complete+0x237/0x770 drivers/net/usb/usbnet.c:1301
 __usb_hcd_giveback_urb+0x38d/0x610 drivers/usb/core/hcd.c:1657
 usb_hcd_giveback_urb+0x3ca/0x4a0 drivers/usb/core/hcd.c:1741
 vhci_recv_ret_submit drivers/usb/usbip/vhci_rx.c:107 [inline]
 vhci_rx_pdu drivers/usb/usbip/vhci_rx.c:242 [inline]
 vhci_rx_loop+0x60e/0xa60 drivers/usb/usbip/vhci_rx.c:265
 kthread+0x370/0x450 kernel/kthread.c:436
 ret_from_fork+0x72b/0xd50 arch/x86/kernel/process.c:158
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
 </TASK>
BUG: using smp_processor_id() in preemptible [00000000] code: vhci_rx/6048
caller is tx_complete+0x237/0x770 drivers/net/usb/usbnet.c:1301
CPU: 0 UID: 0 PID: 6048 Comm: vhci_rx 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
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:94 [inline]
 dump_stack_lvl+0x100/0x190 lib/dump_stack.c:120
 check_preemption_disabled+0xd8/0xe0 lib/smp_processor_id.c:47
 tx_complete+0x237/0x770 drivers/net/usb/usbnet.c:1301
 __usb_hcd_giveback_urb+0x38d/0x610 drivers/usb/core/hcd.c:1657
 usb_hcd_giveback_urb+0x3ca/0x4a0 drivers/usb/core/hcd.c:1741
 vhci_recv_ret_submit drivers/usb/usbip/vhci_rx.c:107 [inline]
 vhci_rx_pdu drivers/usb/usbip/vhci_rx.c:242 [inline]
 vhci_rx_loop+0x60e/0xa60 drivers/usb/usbip/vhci_rx.c:265
 kthread+0x370/0x450 kernel/kthread.c:436
 ret_from_fork+0x72b/0xd50 arch/x86/kernel/process.c:158
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
 </TASK>
BUG: using smp_processor_id() in preemptible [00000000] code: vhci_rx/6048
caller is tx_complete+0x237/0x770 drivers/net/usb/usbnet.c:1301
CPU: 0 UID: 0 PID: 6048 Comm: vhci_rx 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
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:94 [inline]
 dump_stack_lvl+0x100/0x190 lib/dump_stack.c:120
 check_preemption_disabled+0xd8/0xe0 lib/smp_processor_id.c:47
 tx_complete+0x237/0x770 drivers/net/usb/usbnet.c:1301
 __usb_hcd_giveback_urb+0x38d/0x610 drivers/usb/core/hcd.c:1657
 usb_hcd_giveback_urb+0x3ca/0x4a0 drivers/usb/core/hcd.c:1741
 vhci_recv_ret_submit drivers/usb/usbip/vhci_rx.c:107 [inline]
 vhci_rx_pdu drivers/usb/usbip/vhci_rx.c:242 [inline]
 vhci_rx_loop+0x60e/0xa60 drivers/usb/usbip/vhci_rx.c:265
 kthread+0x370/0x450 kernel/kthread.c:436
 ret_from_fork+0x72b/0xd50 arch/x86/kernel/process.c:158
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
 </TASK>
BUG: using smp_processor_id() in preemptible [00000000] code: vhci_rx/6048
caller is tx_complete+0x237/0x770 drivers/net/usb/usbnet.c:1301
CPU: 2 UID: 0 PID: 6048 Comm: vhci_rx 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
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:94 [inline]
 dump_stack_lvl+0x100/0x190 lib/dump_stack.c:120
 check_preemption_disabled+0xd8/0xe0 lib/smp_processor_id.c:47
 tx_complete+0x237/0x770 drivers/net/usb/usbnet.c:1301
 __usb_hcd_giveback_urb+0x38d/0x610 drivers/usb/core/hcd.c:1657
 usb_hcd_giveback_urb+0x3ca/0x4a0 drivers/usb/core/hcd.c:1741
 vhci_recv_ret_submit drivers/usb/usbip/vhci_rx.c:107 [inline]
 vhci_rx_pdu drivers/usb/usbip/vhci_rx.c:242 [inline]
 vhci_rx_loop+0x60e/0xa60 drivers/usb/usbip/vhci_rx.c:265
 kthread+0x370/0x450 kernel/kthread.c:436
 ret_from_fork+0x72b/0xd50 arch/x86/kernel/process.c:158
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
 </TASK>
BUG: using smp_processor_id() in preemptible [00000000] code: vhci_rx/6048
caller is tx_complete+0x237/0x770 drivers/net/usb/usbnet.c:1301
CPU: 3 UID: 0 PID: 6048 Comm: vhci_rx 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
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:94 [inline]
 dump_stack_lvl+0x100/0x190 lib/dump_stack.c:120
 check_preemption_disabled+0xd8/0xe0 lib/smp_processor_id.c:47
 tx_complete+0x237/0x770 drivers/net/usb/usbnet.c:1301
 __usb_hcd_giveback_urb+0x38d/0x610 drivers/usb/core/hcd.c:1657
 usb_hcd_giveback_urb+0x3ca/0x4a0 drivers/usb/core/hcd.c:1741
 vhci_recv_ret_submit drivers/usb/usbip/vhci_rx.c:107 [inline]
 vhci_rx_pdu drivers/usb/usbip/vhci_rx.c:242 [inline]
 vhci_rx_loop+0x60e/0xa60 drivers/usb/usbip/vhci_rx.c:265
 kthread+0x370/0x450 kernel/kthread.c:436
 ret_from_fork+0x72b/0xd50 arch/x86/kernel/process.c:158
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
 </TASK>
vhci_hcd: connection reset by peer


---
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#syz test: git://repo/address.git branch-or-commit-hash
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