------------[ cut here ]------------
NETDEV WATCHDOG: lec0 (): transmit queue 0 timed out
WARNING: CPU: 1 PID: 7221 at net/sched/sch_generic.c:481 dev_watchdog+0x85d/0xa40 net/sched/sch_generic.c:480
Modules linked in:
CPU: 1 PID: 7221 Comm: syz.6.960 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/15/2026
RIP: 0010:dev_watchdog+0x85d/0xa40 net/sched/sch_generic.c:480
Code: 77 4c 06 01 48 8b 5c 24 20 48 89 df e8 9c ca e3 ff 48 c7 c7 c0 68 23 8b 48 89 de 48 8b 1c 24 48 89 c2 44 89 e1 e8 83 96 b1 01 <0f> 0b e9 51 fe ff ff e8 37 3a 6c f9 0f 0b e9 33 fe ff ff 89 d9 80
RSP: 0018:ffffc90000dd0af0 EFLAGS: 00010246
RAX: 8b2e07d11126c500 RBX: ffff888078ee4448 RCX: ffff8880211a8000
RDX: 0000000000000100 RSI: 0000000000000101 RDI: 0000000000000000
RBP: dffffc0000000000 R08: ffffc90000dd0627 R09: 1ffff920001ba0c4
R10: dffffc0000000000 R11: fffff520001ba0c5 R12: 0000000000000000
R13: ffff888078ee4540 R14: 0000000000000000 R15: dffffc0000000000
FS:  00007f96f84906c0(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b32923ffc CR3: 00000000721b0000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <IRQ>
 call_timer_fn+0x17b/0x540 kernel/time/timer.c:1648
 expire_timers kernel/time/timer.c:1699 [inline]
 __run_timers+0x56c/0x810 kernel/time/timer.c:1970
 run_timer_softirq+0x63/0xf0 kernel/time/timer.c:1983
 handle_softirqs+0x336/0x830 kernel/softirq.c:576
 __do_softirq kernel/softirq.c:610 [inline]
 invoke_softirq kernel/softirq.c:450 [inline]
 __irq_exit_rcu+0x13b/0x230 kernel/softirq.c:659
 irq_exit_rcu+0x5/0x20 kernel/softirq.c:671
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1108 [inline]
 sysvec_apic_timer_interrupt+0xa0/0xc0 arch/x86/kernel/apic/apic.c:1108
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:676
RIP: 0010:is_bpf_text_address+0xa/0x270 kernel/bpf/core.c:722
Code: 08 e8 3a 1b e0 ff e8 55 a4 00 00 48 89 d8 48 83 c4 20 5b 41 5c 41 5d 41 5e 41 5f 5d c3 0f 1f 00 55 41 57 41 56 41 55 41 54 53 <50> 48 89 fb e8 ed d0 f3 ff e8 b8 1a e0 ff e8 f3 a3 00 00 e8 ce 34
RSP: 0018:ffffc9000465eec8 EFLAGS: 00000246
RAX: 0000000000000000 RBX: 0000000000000001 RCX: 0000000000000000
RDX: ffffc9000465ff00 RSI: ffffffff8a7a50e0 RDI: 00007f96fa1fa34e
RBP: 0000000000007401 R08: ffffc9000465ff58 R09: 000000000000000c
R10: dffffc0000000000 R11: fffff520008cbdf5 R12: ffff8880211a8000
R13: 1ffff110042350b0 R14: 00007f96fa1fa34e R15: 1ffff920008cbdf2
 kernel_text_address kernel/extable.c:151 [inline]
 __kernel_text_address+0x9a/0x100 kernel/extable.c:105
 unwind_get_return_address+0x49/0x80 arch/x86/kernel/unwind_orc.c:323
 arch_stack_walk+0xf2/0x140 arch/x86/kernel/stacktrace.c:26
 stack_trace_save+0xa6/0xf0 kernel/stacktrace.c:122
 save_stack+0x121/0x230 mm/page_owner.c:119
 __set_page_owner+0x41/0x2d0 mm/page_owner.c:181
 prep_new_page mm/page_alloc.c:2426 [inline]
 get_page_from_freelist+0x24f6/0x2670 mm/page_alloc.c:4192
 __alloc_pages+0x1ee/0x480 mm/page_alloc.c:5501
 alloc_pages_vma+0x2bc/0x790 mm/mempolicy.c:2146
 shmem_alloc_page mm/shmem.c:1586 [inline]
 shmem_alloc_and_acct_page+0x47f/0xbe0 mm/shmem.c:1611
 shmem_getpage_gfp+0x14be/0x2c10 mm/shmem.c:1906
 shmem_getpage mm/shmem.c:151 [inline]
 shmem_write_begin+0xcd/0x1a0 mm/shmem.c:2474
 generic_perform_write+0x2b6/0x550 mm/filemap.c:3785
 __generic_file_write_iter+0x261/0x4e0 mm/filemap.c:3912
 generic_file_write_iter+0xa6/0x1b0 mm/filemap.c:3944
 call_write_iter include/linux/fs.h:2179 [inline]
 new_sync_write fs/read_write.c:507 [inline]
 vfs_write+0x748/0xd70 fs/read_write.c:594
 ksys_write+0x153/0x260 fs/read_write.c:647
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7f96fa1fa34e
Code: 08 0f 85 a5 a8 ff ff 49 89 fb 48 89 f0 48 89 d7 48 89 ce 4c 89 c2 4d 89 ca 4c 8b 44 24 08 4c 8b 4c 24 10 4c 89 5c 24 08 0f 05 <c3> 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 80 00 00 00 00 48 83 ec 08
RSP: 002b:00007f96f848fda8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f96f84906c0 RCX: 00007f96fa1fa34e
RDX: 00000000013bd7ef RSI: 00007f96f0070000 RDI: 0000000000000003
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000003
R13: 00007f96f848fee0 R14: 00007f96f848fea0 R15: 00007f96f0070000
 </TASK>
----------------
Code disassembly (best guess):
   0:	08 e8                	or     %ch,%al
   2:	3a 1b                	cmp    (%rbx),%bl
   4:	e0 ff                	loopne 0x5
   6:	e8 55 a4 00 00       	call   0xa460
   b:	48 89 d8             	mov    %rbx,%rax
   e:	48 83 c4 20          	add    $0x20,%rsp
  12:	5b                   	pop    %rbx
  13:	41 5c                	pop    %r12
  15:	41 5d                	pop    %r13
  17:	41 5e                	pop    %r14
  19:	41 5f                	pop    %r15
  1b:	5d                   	pop    %rbp
  1c:	c3                   	ret
  1d:	0f 1f 00             	nopl   (%rax)
  20:	55                   	push   %rbp
  21:	41 57                	push   %r15
  23:	41 56                	push   %r14
  25:	41 55                	push   %r13
  27:	41 54                	push   %r12
  29:	53                   	push   %rbx
* 2a:	50                   	push   %rax <-- trapping instruction
  2b:	48 89 fb             	mov    %rdi,%rbx
  2e:	e8 ed d0 f3 ff       	call   0xfff3d120
  33:	e8 b8 1a e0 ff       	call   0xffe01af0
  38:	e8 f3 a3 00 00       	call   0xa430
  3d:	e8                   	.byte 0xe8
  3e:	ce                   	(bad)
  3f:	34                   	.byte 0x34