general protection fault, probably for non-canonical address 0xdffffc0000000001: 0000 [#1] PREEMPT SMP KASAN KASAN: null-ptr-deref in range [0x0000000000000008-0x000000000000000f] CPU: 0 PID: 8 Comm: kworker/0:0 Not tainted 6.6.98-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 Workqueue: do_submit_urb (wg-crypt-wg0) RIP: 0010:process_one_work kernel/workqueue.c:2575 [inline] RIP: 0010:process_scheduled_works+0x5aa/0x15b0 kernel/workqueue.c:2711 Code: 89 ac 24 10 01 00 00 44 89 e8 c1 e8 05 83 e0 0f 89 03 48 8b 44 24 38 48 8d 58 08 48 89 d8 48 c1 e8 03 48 89 84 24 80 00 00 00 <42> 80 3c 20 00 74 08 48 89 df e8 17 1a 85 00 48 89 5c 24 48 4c 8b RSP: 0018:ffffc900000d7bc0 EFLAGS: 00010002 RAX: 0000000000000001 RBX: 0000000000000008 RCX: 0000001fffffffc0 RDX: 0000000000000000 RSI: 0000000000000004 RDI: 00000000ffffffff RBP: ffffc900000d7da8 R08: ffffffff97169b1b R09: 1ffffffff2e2d363 R10: dffffc0000000000 R11: fffffbfff2e2d364 R12: dffffc0000000000 R13: 0000001fffffffc0 R14: ffff888025ca8690 R15: ffff888019672818 FS: 0000000000000000(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00005555562b0808 CR3: 0000000062b29000 CR4: 00000000003506f0 Call Trace: worker_thread+0xa55/0xfc0 kernel/workqueue.c:2792 kthread+0x2fa/0x390 kernel/kthread.c:388 ret_from_fork+0x48/0x80 arch/x86/kernel/process.c:152 ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:293 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:process_one_work kernel/workqueue.c:2575 [inline] RIP: 0010:process_scheduled_works+0x5aa/0x15b0 kernel/workqueue.c:2711 Code: 89 ac 24 10 01 00 00 44 89 e8 c1 e8 05 83 e0 0f 89 03 48 8b 44 24 38 48 8d 58 08 48 89 d8 48 c1 e8 03 48 89 84 24 80 00 00 00 <42> 80 3c 20 00 74 08 48 89 df e8 17 1a 85 00 48 89 5c 24 48 4c 8b RSP: 0018:ffffc900000d7bc0 EFLAGS: 00010002 RAX: 0000000000000001 RBX: 0000000000000008 RCX: 0000001fffffffc0 RDX: 0000000000000000 RSI: 0000000000000004 RDI: 00000000ffffffff RBP: ffffc900000d7da8 R08: ffffffff97169b1b R09: 1ffffffff2e2d363 R10: dffffc0000000000 R11: fffffbfff2e2d364 R12: dffffc0000000000 R13: 0000001fffffffc0 R14: ffff888025ca8690 R15: ffff888019672818 FS: 0000000000000000(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00005555562b0808 CR3: 0000000062b29000 CR4: 00000000003506f0 ---------------- Code disassembly (best guess): 0: 89 ac 24 10 01 00 00 mov %ebp,0x110(%rsp) 7: 44 89 e8 mov %r13d,%eax a: c1 e8 05 shr $0x5,%eax d: 83 e0 0f and $0xf,%eax 10: 89 03 mov %eax,(%rbx) 12: 48 8b 44 24 38 mov 0x38(%rsp),%rax 17: 48 8d 58 08 lea 0x8(%rax),%rbx 1b: 48 89 d8 mov %rbx,%rax 1e: 48 c1 e8 03 shr $0x3,%rax 22: 48 89 84 24 80 00 00 mov %rax,0x80(%rsp) 29: 00 * 2a: 42 80 3c 20 00 cmpb $0x0,(%rax,%r12,1) <-- trapping instruction 2f: 74 08 je 0x39 31: 48 89 df mov %rbx,%rdi 34: e8 17 1a 85 00 call 0x851a50 39: 48 89 5c 24 48 mov %rbx,0x48(%rsp) 3e: 4c rex.WR 3f: 8b .byte 0x8b