general protection fault, probably for non-canonical address 0xdffffc000000000a: 0000 [#1] PREEMPT SMP KASAN
KASAN: null-ptr-deref in range [0x0000000000000050-0x0000000000000057]
CPU: 1 PID: 1279 Comm: aoe_tx0 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
RIP: 0010:dummy_queue+0x1a3/0x8c0 drivers/usb/gadget/udc/dummy_hcd.c:717
Code: fc ff df 80 3c 08 00 74 08 4c 89 e7 e8 66 85 53 fb 4d 8b 24 24 49 83 c4 50 4c 89 e0 48 c1 e8 03 48 b9 00 00 00 00 00 fc ff df <0f> b6 04 08 84 c0 0f 85 ea 05 00 00 45 8b 24 24 44 89 e6 83 e6 02
RSP: 0018:ffffc900001e0bd8 EFLAGS: 00010206
RAX: 000000000000000a RBX: ffff888030b3d610 RCX: dffffc0000000000
RDX: ffff8880276f0000 RSI: 0000000000000003 RDI: 0000000000000005
RBP: ffff888030b3d600 R08: ffff888055746c83 R09: 1ffff1100aae8d90
R10: dffffc0000000000 R11: ffffed100aae8d91 R12: 0000000000000050
R13: 1ffff11006167ac0 R14: ffff888027fe80e0 R15: ffff888027fe8c00
FS: 0000000000000000(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f6b6a7f14b8 CR3: 0000000030bf3000 CR4: 00000000003506e0
DR0: ffffffffffffffff DR1: 00000000000001f8 DR2: 0000000000000002
DR3: ffffffffefffff15 DR6: 00000000ffff0ff0 DR7: 0000000000000400
Call Trace:
usb_ep_queue+0xde/0x3d0 drivers/usb/gadget/udc/core.c:305
eth_start_xmit+0x8b2/0xe70 drivers/usb/gadget/function/u_ether.c:590
ncm_tx_timeout+0x80/0x90 drivers/usb/gadget/function/f_ncm.c:1166
__run_hrtimer kernel/time/hrtimer.c:1751 [inline]
__hrtimer_run_queues+0x522/0xc90 kernel/time/hrtimer.c:1815
hrtimer_run_softirq+0x173/0x290 kernel/time/hrtimer.c:1832
handle_softirqs+0x291/0x910 kernel/softirq.c:596
do_softirq+0x142/0x210 kernel/softirq.c:497
__local_bh_enable_ip+0x180/0x1c0 kernel/softirq.c:421
local_bh_enable include/linux/bottom_half.h:33 [inline]
rcu_read_unlock_bh include/linux/rcupdate.h:861 [inline]
__dev_queue_xmit+0x1d84/0x3810 net/core/dev.c:4411
dev_queue_xmit include/linux/netdevice.h:3051 [inline]
tx+0x67/0x170 drivers/block/aoe/aoenet.c:63
kthread+0x1d7/0x3d0 drivers/block/aoe/aoecmd.c:1241
kthread+0x29d/0x330 kernel/kthread.c:376
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:dummy_queue+0x1a3/0x8c0 drivers/usb/gadget/udc/dummy_hcd.c:717
Code: fc ff df 80 3c 08 00 74 08 4c 89 e7 e8 66 85 53 fb 4d 8b 24 24 49 83 c4 50 4c 89 e0 48 c1 e8 03 48 b9 00 00 00 00 00 fc ff df <0f> b6 04 08 84 c0 0f 85 ea 05 00 00 45 8b 24 24 44 89 e6 83 e6 02
RSP: 0018:ffffc900001e0bd8 EFLAGS: 00010206
RAX: 000000000000000a RBX: ffff888030b3d610 RCX: dffffc0000000000
RDX: ffff8880276f0000 RSI: 0000000000000003 RDI: 0000000000000005
RBP: ffff888030b3d600 R08: ffff888055746c83 R09: 1ffff1100aae8d90
R10: dffffc0000000000 R11: ffffed100aae8d91 R12: 0000000000000050
R13: 1ffff11006167ac0 R14: ffff888027fe80e0 R15: ffff888027fe8c00
FS: 0000000000000000(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f6b6a7f14b8 CR3: 0000000030bf3000 CR4: 00000000003506e0
DR0: ffffffffffffffff DR1: 00000000000001f8 DR2: 0000000000000002
DR3: ffffffffefffff15 DR6: 00000000ffff0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess):
0: fc cld
1: ff lcall (bad)
2: df 80 3c 08 00 74 filds 0x7400083c(%rax)
8: 08 4c 89 e7 or %cl,-0x19(%rcx,%rcx,4)
c: e8 66 85 53 fb call 0xfb538577
11: 4d 8b 24 24 mov (%r12),%r12
15: 49 83 c4 50 add $0x50,%r12
19: 4c 89 e0 mov %r12,%rax
1c: 48 c1 e8 03 shr $0x3,%rax
20: 48 b9 00 00 00 00 00 movabs $0xdffffc0000000000,%rcx
27: fc ff df
* 2a: 0f b6 04 08 movzbl (%rax,%rcx,1),%eax <-- trapping instruction
2e: 84 c0 test %al,%al
30: 0f 85 ea 05 00 00 jne 0x620
36: 45 8b 24 24 mov (%r12),%r12d
3a: 44 89 e6 mov %r12d,%esi
3d: 83 e6 02 and $0x2,%esi