syzbot


BUG: sleeping function called from invalid context in usb_tx_block

Status: upstream: reported C repro on 2026/02/24 18:56
Subsystems: usb
[Documentation on labels]
Reported-by: syzbot+74afbb6355826ffc2239@syzkaller.appspotmail.com
First crash: 10d, last: 27m
Discussions (1)
Title Replies (including bot) Last reply
[syzbot] [usb?] BUG: sleeping function called from invalid context in usb_tx_block 1 (3) 2026/02/25 05:59
Last patch testing requests (1)
Created Duration User Patch Repo Result
2026/02/25 04:58 59m hdanton@sina.com patch https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing OK log

Sample crash report:
usb8xxx: URB in failure status: -2
BUG: sleeping function called from invalid context at drivers/usb/core/urb.c:706
in_atomic(): 1, irqs_disabled(): 1, non_block: 0, pid: 0, name: swapper/1
preempt_count: 101, expected: 0
RCU nest depth: 0, expected: 0
no locks held by swapper/1/0.
irq event stamp: 328389
hardirqs last  enabled at (328388): [<ffffffff876b10b2>] __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:178 [inline]
hardirqs last  enabled at (328388): [<ffffffff876b10b2>] _raw_spin_unlock_irqrestore+0x52/0x80 kernel/locking/spinlock.c:194
hardirqs last disabled at (328389): [<ffffffff876b0dc2>] __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:130 [inline]
hardirqs last disabled at (328389): [<ffffffff876b0dc2>] _raw_spin_lock_irqsave+0x52/0x60 kernel/locking/spinlock.c:162
softirqs last  enabled at (328372): [<ffffffff8176f0bd>] __do_softirq kernel/softirq.c:656 [inline]
softirqs last  enabled at (328372): [<ffffffff8176f0bd>] invoke_softirq kernel/softirq.c:496 [inline]
softirqs last  enabled at (328372): [<ffffffff8176f0bd>] __irq_exit_rcu+0xed/0x150 kernel/softirq.c:723
softirqs last disabled at (328385): [<ffffffff8176f0bd>] __do_softirq kernel/softirq.c:656 [inline]
softirqs last disabled at (328385): [<ffffffff8176f0bd>] invoke_softirq kernel/softirq.c:496 [inline]
softirqs last disabled at (328385): [<ffffffff8176f0bd>] __irq_exit_rcu+0xed/0x150 kernel/softirq.c:723
Preemption disabled at:
[<0000000000000000>] 0x0
CPU: 1 UID: 0 PID: 0 Comm: swapper/1 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2026
Call Trace:
 <IRQ>
 __dump_stack lib/dump_stack.c:94 [inline]
 dump_stack_lvl+0x100/0x190 lib/dump_stack.c:120
 __might_resched.cold+0x1ec/0x232 kernel/sched/core.c:8884
 usb_kill_urb+0x8e/0x320 drivers/usb/core/urb.c:706
 usb_tx_block+0x91/0x320 drivers/net/wireless/marvell/libertas/if_usb.c:429
 if_usb_send_fw_pkt.isra.0+0x2e4/0x550 drivers/net/wireless/marvell/libertas/if_usb.c:366
 if_usb_receive_fwload+0x5d3/0x780 drivers/net/wireless/marvell/libertas/if_usb.c:592
 __usb_hcd_giveback_urb+0x38d/0x610 drivers/usb/core/hcd.c:1657
 usb_hcd_giveback_urb+0x3ca/0x4a0 drivers/usb/core/hcd.c:1741
 dummy_timer+0xd85/0x3670 drivers/usb/gadget/udc/dummy_hcd.c:1995
 __run_hrtimer kernel/time/hrtimer.c:1785 [inline]
 __hrtimer_run_queues+0x50e/0xa70 kernel/time/hrtimer.c:1849
 hrtimer_run_softirq+0x17d/0x350 kernel/time/hrtimer.c:1866
 handle_softirqs+0x1de/0x9d0 kernel/softirq.c:622
 __do_softirq kernel/softirq.c:656 [inline]
 invoke_softirq kernel/softirq.c:496 [inline]
 __irq_exit_rcu+0xed/0x150 kernel/softirq.c:723
 irq_exit_rcu+0x9/0x30 kernel/softirq.c:739
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1056 [inline]
 sysvec_apic_timer_interrupt+0x8f/0xb0 arch/x86/kernel/apic/apic.c:1056
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:697
RIP: 0010:pv_native_safe_halt+0xf/0x20 arch/x86/kernel/paravirt.c:63
Code: be b1 01 e9 13 e8 02 00 0f 1f 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 66 90 0f 00 2d d3 f1 1d 00 fb f4 <c3> cc cc cc cc 66 2e 0f 1f 84 00 00 00 00 00 66 90 90 90 90 90 90
RSP: 0018:ffffc9000013fe00 EFLAGS: 00000242
RAX: 00000000000502bf RBX: ffff8881022a1d00 RCX: ffffffff876888d5
RDX: 0000000000000000 RSI: ffffffff8901d71b RDI: ffffffff87afa420
RBP: 0000000000000001 R08: 0000000000000001 R09: ffffed103eae6725
R10: ffff8881f573392b R11: 0000000000000000 R12: ffffed10204543a0
R13: 0000000000000001 R14: ffffffff8aefe2d0 R15: 0000000000000000
 arch_safe_halt arch/x86/include/asm/paravirt.h:73 [inline]
 default_idle+0x9/0x10 arch/x86/kernel/process.c:767
 default_idle_call+0x6c/0xb0 kernel/sched/idle.c:122
 cpuidle_idle_call kernel/sched/idle.c:191 [inline]
 do_idle+0x35b/0x4b0 kernel/sched/idle.c:332
 cpu_startup_entry+0x4f/0x60 kernel/sched/idle.c:430
 start_secondary+0x21d/0x2d0 arch/x86/kernel/smpboot.c:312
 common_startup_64+0x13e/0x148
 </TASK>
BUG: scheduling while atomic: swapper/1/0/0x00000102
no locks held by swapper/1/0.
Modules linked in:
irq event stamp: 328389
hardirqs last  enabled at (328388): [<ffffffff876b10b2>] __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:178 [inline]
hardirqs last  enabled at (328388): [<ffffffff876b10b2>] _raw_spin_unlock_irqrestore+0x52/0x80 kernel/locking/spinlock.c:194
hardirqs last disabled at (328389): [<ffffffff876b0dc2>] __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:130 [inline]
hardirqs last disabled at (328389): [<ffffffff876b0dc2>] _raw_spin_lock_irqsave+0x52/0x60 kernel/locking/spinlock.c:162
softirqs last  enabled at (328372): [<ffffffff8176f0bd>] __do_softirq kernel/softirq.c:656 [inline]
softirqs last  enabled at (328372): [<ffffffff8176f0bd>] invoke_softirq kernel/softirq.c:496 [inline]
softirqs last  enabled at (328372): [<ffffffff8176f0bd>] __irq_exit_rcu+0xed/0x150 kernel/softirq.c:723
softirqs last disabled at (328385): [<ffffffff8176f0bd>] __do_softirq kernel/softirq.c:656 [inline]
softirqs last disabled at (328385): [<ffffffff8176f0bd>] invoke_softirq kernel/softirq.c:496 [inline]
softirqs last disabled at (328385): [<ffffffff8176f0bd>] __irq_exit_rcu+0xed/0x150 kernel/softirq.c:723
Preemption disabled at:
[<0000000000000000>] 0x0
----------------
Code disassembly (best guess):
   0:	be b1 01 e9 13       	mov    $0x13e901b1,%esi
   5:	e8 02 00 0f 1f       	call   0x1f0f000c
   a:	00 90 90 90 90 90    	add    %dl,-0x6f6f6f70(%rax)
  10:	90                   	nop
  11:	90                   	nop
  12:	90                   	nop
  13:	90                   	nop
  14:	90                   	nop
  15:	90                   	nop
  16:	90                   	nop
  17:	90                   	nop
  18:	90                   	nop
  19:	90                   	nop
  1a:	90                   	nop
  1b:	f3 0f 1e fa          	endbr64
  1f:	66 90                	xchg   %ax,%ax
  21:	0f 00 2d d3 f1 1d 00 	verw   0x1df1d3(%rip)        # 0x1df1fb
  28:	fb                   	sti
  29:	f4                   	hlt
* 2a:	c3                   	ret <-- trapping instruction
  2b:	cc                   	int3
  2c:	cc                   	int3
  2d:	cc                   	int3
  2e:	cc                   	int3
  2f:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
  36:	00 00 00
  39:	66 90                	xchg   %ax,%ax
  3b:	90                   	nop
  3c:	90                   	nop
  3d:	90                   	nop
  3e:	90                   	nop
  3f:	90                   	nop

Crashes (157):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2026/02/20 22:16 https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing 8bf22c33e7a1 6e7b5511 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-upstream-usb BUG: sleeping function called from invalid context in usb_tx_block
2026/02/20 21:15 https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing 8bf22c33e7a1 6e7b5511 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-upstream-usb BUG: sleeping function called from invalid context in usb_tx_block
2026/02/20 20:16 https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing 8bf22c33e7a1 6e7b5511 .config console log report syz / log C [disk image] [vmlinux] [kernel image] ci2-upstream-usb BUG: sleeping function called from invalid context in usb_tx_block
2026/03/02 20:23 https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing bb375c251ab4 b9dd6534 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-usb BUG: sleeping function called from invalid context in usb_tx_block
2026/03/02 15:13 https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing bb375c251ab4 b9dd6534 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-usb BUG: sleeping function called from invalid context in usb_tx_block
2026/03/02 13:04 https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing bb375c251ab4 b9dd6534 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-usb BUG: sleeping function called from invalid context in usb_tx_block
2026/03/02 05:57 https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing bb375c251ab4 43249bac .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-usb BUG: sleeping function called from invalid context in usb_tx_block
2026/03/02 03:12 https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing bb375c251ab4 43249bac .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-usb BUG: sleeping function called from invalid context in usb_tx_block
2026/03/02 02:11 https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing bb375c251ab4 43249bac .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-usb BUG: sleeping function called from invalid context in usb_tx_block
2026/03/01 19:34 https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing bb375c251ab4 43249bac .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-usb BUG: sleeping function called from invalid context in usb_tx_block
2026/03/01 17:14 https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing bb375c251ab4 43249bac .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-usb BUG: sleeping function called from invalid context in usb_tx_block
2026/03/01 16:04 https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing bb375c251ab4 43249bac .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-usb BUG: sleeping function called from invalid context in usb_tx_block
2026/03/01 14:17 https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing bb375c251ab4 43249bac .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-usb BUG: sleeping function called from invalid context in usb_tx_block
2026/03/01 12:26 https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing bb375c251ab4 43249bac .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-usb BUG: sleeping function called from invalid context in usb_tx_block
2026/03/01 10:51 https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing bb375c251ab4 43249bac .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-usb BUG: sleeping function called from invalid context in usb_tx_block
2026/03/01 07:05 https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing bb375c251ab4 43249bac .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-usb BUG: sleeping function called from invalid context in usb_tx_block
2026/03/01 05:34 https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing bb375c251ab4 43249bac .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-usb BUG: sleeping function called from invalid context in usb_tx_block
2026/03/01 03:15 https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing bb375c251ab4 43249bac .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-usb BUG: sleeping function called from invalid context in usb_tx_block
2026/02/28 23:46 https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing bb375c251ab4 43249bac .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-usb BUG: sleeping function called from invalid context in usb_tx_block
2026/02/28 22:30 https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing bb375c251ab4 43249bac .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-usb BUG: sleeping function called from invalid context in usb_tx_block
2026/02/28 20:27 https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing bb375c251ab4 43249bac .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-usb BUG: sleeping function called from invalid context in usb_tx_block
2026/02/28 18:58 https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing bb375c251ab4 43249bac .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-usb BUG: sleeping function called from invalid context in usb_tx_block
2026/02/28 17:25 https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing bb375c251ab4 43249bac .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-usb BUG: sleeping function called from invalid context in usb_tx_block
2026/02/28 16:19 https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing bb375c251ab4 43249bac .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-usb BUG: sleeping function called from invalid context in usb_tx_block
2026/02/28 14:24 https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing bb375c251ab4 43249bac .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-usb BUG: sleeping function called from invalid context in usb_tx_block
2026/02/28 11:46 https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing bb375c251ab4 43249bac .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-usb BUG: sleeping function called from invalid context in usb_tx_block
2026/02/28 09:03 https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing bb375c251ab4 43249bac .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-usb BUG: sleeping function called from invalid context in usb_tx_block
2026/02/28 07:30 https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing bb375c251ab4 43249bac .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-usb BUG: sleeping function called from invalid context in usb_tx_block
2026/02/28 04:16 https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing bb375c251ab4 43249bac .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-usb BUG: sleeping function called from invalid context in usb_tx_block
2026/02/28 02:49 https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing bb375c251ab4 2cf092b8 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-usb BUG: sleeping function called from invalid context in usb_tx_block
2026/02/28 01:02 https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing bb375c251ab4 2cf092b8 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-usb BUG: sleeping function called from invalid context in usb_tx_block
2026/02/27 21:54 https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing bb375c251ab4 2cf092b8 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-usb BUG: sleeping function called from invalid context in usb_tx_block
2026/02/27 20:45 https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing bb375c251ab4 2cf092b8 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-usb BUG: sleeping function called from invalid context in usb_tx_block
2026/02/27 17:41 https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing bb375c251ab4 2cf092b8 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-usb BUG: sleeping function called from invalid context in usb_tx_block
2026/02/27 16:34 https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing bb375c251ab4 2cf092b8 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-usb BUG: sleeping function called from invalid context in usb_tx_block
2026/02/27 14:08 https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing bb375c251ab4 a2f13f71 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-usb BUG: sleeping function called from invalid context in usb_tx_block
2026/02/27 11:42 https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing bb375c251ab4 a2f13f71 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-usb BUG: sleeping function called from invalid context in usb_tx_block
2026/02/27 09:35 https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing bb375c251ab4 a2f13f71 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-usb BUG: sleeping function called from invalid context in usb_tx_block
2026/02/27 05:49 https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing bb375c251ab4 a2f13f71 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-usb BUG: sleeping function called from invalid context in usb_tx_block
2026/02/27 04:39 https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing bb375c251ab4 a2f13f71 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-usb BUG: sleeping function called from invalid context in usb_tx_block
2026/02/26 22:05 https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing bb375c251ab4 ffa54287 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-usb BUG: sleeping function called from invalid context in usb_tx_block
2026/02/26 17:24 https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing bb375c251ab4 ffa54287 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-usb BUG: sleeping function called from invalid context in usb_tx_block
2026/02/26 16:09 https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing bb375c251ab4 ffa54287 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-usb BUG: sleeping function called from invalid context in usb_tx_block
2026/02/26 14:18 https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing bb375c251ab4 ffa54287 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-usb BUG: sleeping function called from invalid context in usb_tx_block
2026/02/26 10:48 https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing bb375c251ab4 e0f78d93 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-usb BUG: sleeping function called from invalid context in usb_tx_block
2026/02/26 06:03 https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing bb375c251ab4 e0f78d93 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-usb BUG: sleeping function called from invalid context in usb_tx_block
2026/02/26 03:41 https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing bb375c251ab4 e0f78d93 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-usb BUG: sleeping function called from invalid context in usb_tx_block
2026/02/26 01:29 https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing bb375c251ab4 e0f78d93 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-usb BUG: sleeping function called from invalid context in usb_tx_block
2026/02/26 00:28 https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing bb375c251ab4 e0f78d93 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-usb BUG: sleeping function called from invalid context in usb_tx_block
* Struck through repros no longer work on HEAD.