------------[ cut here ]------------
NETDEV WATCHDOG: sl0 (): transmit queue 0 timed out
WARNING: CPU: 1 PID: 1847 at net/sched/sch_generic.c:526 dev_watchdog+0x6c0/0x700 net/sched/sch_generic.c:525
Modules linked in:
CPU: 1 PID: 1847 Comm: syz-executor.4 Not tainted 6.1.73-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/17/2023
RIP: 0010:dev_watchdog+0x6c0/0x700 net/sched/sch_generic.c:525
Code: ed f8 c6 05 d7 a4 c2 05 01 48 8b 1c 24 48 89 df e8 85 6a e5 ff 48 c7 c7 c0 9a e3 8b 48 89 de 48 89 c2 44 89 f1 e8 d0 cb b5 f8 <0f> 0b e9 8b fe ff ff 89 d9 80 e1 07 80 c1 03 38 c1 0f 8c c1 fb ff
RSP: 0018:ffffc900001e0b00 EFLAGS: 00010246
RAX: 04611f9263478400 RBX: ffff888021338000 RCX: ffff888050258000
RDX: 0000000000000102 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000100028141 R08: ffffffff8152774e R09: fffff5200003c0c1
R10: 0000000000000000 R11: dffffc0000000001 R12: 1ffff11004267089
R13: 0000000100027fd1 R14: 0000000000000000 R15: 0000000000000110
FS: 0000555555c44480(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f20a46f53b0 CR3: 000000004c1cc000 CR4: 00000000003526e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
call_timer_fn+0x1ad/0x6b0 kernel/time/timer.c:1474
expire_timers kernel/time/timer.c:1519 [inline]
__run_timers+0x67c/0x890 kernel/time/timer.c:1790
run_timer_softirq+0x63/0xf0 kernel/time/timer.c:1803
__do_softirq+0x2e9/0xa4c kernel/softirq.c:571
invoke_softirq kernel/softirq.c:445 [inline]
__irq_exit_rcu+0x155/0x240 kernel/softirq.c:650
irq_exit_rcu+0x5/0x20 kernel/softirq.c:662
sysvec_apic_timer_interrupt+0x91/0xb0 arch/x86/kernel/apic/apic.c:1106
asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:653
RIP: 0010:unwind_next_frame+0x76c/0x2220 arch/x86/kernel/unwind_orc.c:471
Code: 04 00 00 89 d9 80 e1 07 38 c1 0f 8c 38 04 00 00 be 02 00 00 00 49 89 fe 48 89 df e8 5e 28 a5 00 e9 63 19 00 00 48 8b 44 24 60 <80> 3c 38 00 4c 8b 24 24 48 8b 5c 24 68 74 0e 49 89 fe 48 89 df e8
RSP: 0018:ffffc90003d56ea0 EFLAGS: 00000297
RAX: 1ffff920007aadf7 RBX: 0000000000000005 RCX: ffffffff8e8ae6e8
RDX: ffffffff8ef9ff04 RSI: ffffffff81f7c974 RDI: dffffc0000000000
RBP: ffffffff8ef9ff04 R08: 0000000000000007 R09: ffffc90003d57070
R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000000000000
R13: ffffffff8ef9ff08 R14: ffffffff8e8ae6e4 R15: 1ffffffff1df3fe1
arch_stack_walk+0x10d/0x140 arch/x86/kernel/stacktrace.c:25
stack_trace_save+0x113/0x1c0 kernel/stacktrace.c:122
kasan_save_stack mm/kasan/common.c:45 [inline]
kasan_set_track+0x4b/0x70 mm/kasan/common.c:52
__kasan_slab_alloc+0x65/0x70 mm/kasan/common.c:328
kasan_slab_alloc include/linux/kasan.h:201 [inline]
slab_post_alloc_hook+0x52/0x3a0 mm/slab.h:737
slab_alloc_node mm/slub.c:3398 [inline]
slab_alloc mm/slub.c:3406 [inline]
__kmem_cache_alloc_lru mm/slub.c:3413 [inline]
kmem_cache_alloc+0x10c/0x2d0 mm/slub.c:3422
kmem_cache_zalloc include/linux/slab.h:679 [inline]
lsm_inode_alloc security/security.c:596 [inline]
security_inode_alloc+0x24/0x110 security/security.c:1040
inode_init_always+0x943/0xc70 fs/inode.c:232
alloc_inode fs/inode.c:268 [inline]
new_inode_pseudo+0x94/0x1d0 fs/inode.c:1020
new_inode+0x25/0x1d0 fs/inode.c:1048
debugfs_get_inode fs/debugfs/inode.c:72 [inline]
__debugfs_create_file+0x147/0x500 fs/debugfs/inode.c:430
nsim_fib_debugfs_init drivers/net/netdevsim/fib.c:1526 [inline]
nsim_fib_create+0x1b1/0xba0 drivers/net/netdevsim/fib.c:1564
nsim_drv_probe+0x6e9/0xb20 drivers/net/netdevsim/dev.c:1583
really_probe+0x2ab/0xcb0 drivers/base/dd.c:639
__driver_probe_device+0x1a2/0x3d0 drivers/base/dd.c:785
driver_probe_device+0x50/0x420 drivers/base/dd.c:815
__device_attach_driver+0x2cf/0x510 drivers/base/dd.c:943
bus_for_each_drv+0x183/0x200 drivers/base/bus.c:427
__device_attach+0x359/0x570 drivers/base/dd.c:1015
bus_probe_device+0xba/0x1e0 drivers/base/bus.c:487
device_add+0xb48/0xfd0 drivers/base/core.c:3664
nsim_bus_dev_new drivers/net/netdevsim/bus.c:290 [inline]
new_device_store+0x3e5/0x800 drivers/net/netdevsim/bus.c:167
kernfs_fop_write_iter+0x3a2/0x4f0 fs/kernfs/file.c:330
call_write_iter include/linux/fs.h:2249 [inline]
new_sync_write fs/read_write.c:491 [inline]
vfs_write+0x7ae/0xba0 fs/read_write.c:584
ksys_write+0x19c/0x2c0 fs/read_write.c:637
do_syscall_x64 arch/x86/entry/common.c:51 [inline]
do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:81
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f559407baef
Code: 89 54 24 18 48 89 74 24 10 89 7c 24 08 e8 b9 80 02 00 48 8b 54 24 18 48 8b 74 24 10 41 89 c0 8b 7c 24 08 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 31 44 89 c7 48 89 44 24 08 e8 0c 81 02 00 48
RSP: 002b:00007ffc02e164c0 EFLAGS: 00000293 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f559407baef
RDX: 0000000000000003 RSI: 00007ffc02e16510 RDI: 0000000000000005
RBP: 00007f55940c9045 R08: 0000000000000000 R09: 00007ffc02e16317
R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000003
R13: 00007ffc02e16510 R14: 00007f5594cd4620 R15: 0000000000000003
----------------
Code disassembly (best guess):
0: 04 00 add $0x0,%al
2: 00 89 d9 80 e1 07 add %cl,0x7e180d9(%rcx)
8: 38 c1 cmp %al,%cl
a: 0f 8c 38 04 00 00 jl 0x448
10: be 02 00 00 00 mov $0x2,%esi
15: 49 89 fe mov %rdi,%r14
18: 48 89 df mov %rbx,%rdi
1b: e8 5e 28 a5 00 call 0xa5287e
20: e9 63 19 00 00 jmp 0x1988
25: 48 8b 44 24 60 mov 0x60(%rsp),%rax
* 2a: 80 3c 38 00 cmpb $0x0,(%rax,%rdi,1) <-- trapping instruction
2e: 4c 8b 24 24 mov (%rsp),%r12
32: 48 8b 5c 24 68 mov 0x68(%rsp),%rbx
37: 74 0e je 0x47
39: 49 89 fe mov %rdi,%r14
3c: 48 89 df mov %rbx,%rdi
3f: e8 .byte 0xe8