general protection fault, probably for non-canonical address 0xdffffc00000000b2: 0000 [#1] PREEMPT SMP KASAN KASAN: null-ptr-deref in range [0x0000000000000590-0x0000000000000597] CPU: 0 PID: 14494 Comm: syz-executor.5 Not tainted 5.14.0-rc6-next-20210820-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:latency_exceeded block/blk-wbt.c:237 [inline] RIP: 0010:wb_timer_fn+0x149/0x1750 block/blk-wbt.c:360 Code: 03 80 3c 02 00 0f 85 79 13 00 00 48 8b 9b c8 00 00 00 48 b8 00 00 00 00 00 fc ff df 48 8d bb 90 05 00 00 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 46 13 00 00 48 8b 9b 90 05 00 00 48 b8 00 00 00 RSP: 0018:ffffc90000007c98 EFLAGS: 00010206 RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 0000000000000100 RDX: 00000000000000b2 RSI: ffffffff83d4247d RDI: 0000000000000590 RBP: ffff88801a988c00 R08: 0000000000000003 R09: ffff88801a988d83 R10: ffffffff83d42472 R11: 0000000000000000 R12: 0000000000000003 R13: 0000000000000000 R14: ffff88801add7a80 R15: ffff88801a988cd0 FS: 00007fbb7890f700(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00000000203ff030 CR3: 0000000072ed7000 CR4: 00000000001526f0 Call Trace: call_timer_fn+0x1ab/0x6c0 kernel/time/timer.c:1421 expire_timers kernel/time/timer.c:1466 [inline] __run_timers.part.0+0x675/0xa20 kernel/time/timer.c:1734 __run_timers kernel/time/timer.c:1715 [inline] run_timer_softirq+0xb3/0x1d0 kernel/time/timer.c:1747 __do_softirq+0x29b/0x9c2 kernel/softirq.c:558 invoke_softirq kernel/softirq.c:432 [inline] __irq_exit_rcu+0x133/0x190 kernel/softirq.c:636 irq_exit_rcu+0x9/0x30 kernel/softirq.c:648 sysvec_apic_timer_interrupt+0x9b/0xc0 arch/x86/kernel/apic/apic.c:1097 asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:638 RIP: 0010:__module_address kernel/module.c:4686 [inline] RIP: 0010:__module_text_address+0x7/0x170 kernel/module.c:4728 Code: 00 00 00 48 39 3d f9 3b f4 09 77 0e 48 39 3d f8 3b f4 09 72 05 e9 b9 e4 fe ff 31 c0 c3 66 0f 1f 44 00 00 48 3b 3d d9 3b f4 09 <0f> 82 09 01 00 00 55 48 89 fd 53 48 83 ec 18 48 3b 3d cb 3b f4 09 RSP: 0018:ffffc9000a89e9b0 EFLAGS: 00000213 RAX: dffffc0000000000 RBX: 00000000004665e9 RCX: 1ffffffff207091c RDX: 1ffff11011d6727e RSI: 0000000000000004 RDI: 00000000004665e9 RBP: 00000000004665e9 R08: 0000000000000000 R09: ffff8880b9c32a4b R10: ffffed1017386549 R11: 0000000000086089 R12: ffffc9000a89eae8 R13: 0000000000000000 R14: ffff88808eb38000 R15: ffff88808bbca500 is_module_text_address+0x1c/0x60 kernel/module.c:4713 kernel_text_address kernel/extable.c:145 [inline] kernel_text_address+0x62/0xf0 kernel/extable.c:120 __kernel_text_address+0x9/0x30 kernel/extable.c:105 unwind_get_return_address arch/x86/kernel/unwind_orc.c:318 [inline] unwind_get_return_address+0x59/0xa0 arch/x86/kernel/unwind_orc.c:313 arch_stack_walk+0x93/0xe0 arch/x86/kernel/stacktrace.c:26 stack_trace_save+0x8c/0xc0 kernel/stacktrace.c:121 kasan_save_stack+0x1b/0x40 mm/kasan/common.c:38 kasan_set_track mm/kasan/common.c:46 [inline] set_alloc_info mm/kasan/common.c:434 [inline] ____kasan_kmalloc mm/kasan/common.c:513 [inline] ____kasan_kmalloc mm/kasan/common.c:472 [inline] __kasan_kmalloc+0xa8/0xe0 mm/kasan/common.c:522 kmalloc include/linux/slab.h:594 [inline] kzalloc include/linux/slab.h:731 [inline] kobject_uevent_env+0x240/0x1650 lib/kobject_uevent.c:524 rx_queue_add_kobject net/core/net-sysfs.c:1020 [inline] net_rx_queue_update_kobjects+0xf4/0x4f0 net/core/net-sysfs.c:1060 register_queue_kobjects net/core/net-sysfs.c:1711 [inline] netdev_register_kobject+0x276/0x430 net/core/net-sysfs.c:1959 register_netdevice+0xd3e/0x1510 net/core/dev.c:10295 __rtnl_newlink+0x10b0/0x1790 net/core/rtnetlink.c:3457 rtnl_newlink+0x68/0xa0 net/core/rtnetlink.c:3505 rtnetlink_rcv_msg+0x418/0xb80 net/core/rtnetlink.c:5571 netlink_rcv_skb+0x154/0x430 net/netlink/af_netlink.c:2504 netlink_unicast_kernel net/netlink/af_netlink.c:1314 [inline] netlink_unicast+0x533/0x7d0 net/netlink/af_netlink.c:1340 netlink_sendmsg+0x86d/0xdb0 net/netlink/af_netlink.c:1929 sock_sendmsg_nosec net/socket.c:704 [inline] sock_sendmsg+0xd7/0x130 net/socket.c:724 ____sys_sendmsg+0x331/0x810 net/socket.c:2403 ___sys_sendmsg+0xf3/0x170 net/socket.c:2457 __sys_sendmmsg+0x195/0x470 net/socket.c:2543 __do_sys_sendmmsg net/socket.c:2572 [inline] __se_sys_sendmmsg net/socket.c:2569 [inline] __x64_sys_sendmmsg+0x99/0x100 net/socket.c:2569 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x39/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x44/0xae RIP: 0033:0x4665e9 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 bc ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007fbb7890f188 EFLAGS: 00000246 ORIG_RAX: 0000000000000133 RAX: ffffffffffffffda RBX: 000000000056bf80 RCX: 00000000004665e9 RDX: 000000000000000f RSI: 0000000020000000 RDI: 0000000000000004 RBP: 00000000004bfcc4 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000056bf80 R13: 00007ffecbfad72f R14: 00007fbb7890f300 R15: 0000000000022000 Modules linked in: ---[ end trace f3fcb40b5f0db7d9 ]--- RIP: 0010:latency_exceeded block/blk-wbt.c:237 [inline] RIP: 0010:wb_timer_fn+0x149/0x1750 block/blk-wbt.c:360 Code: 03 80 3c 02 00 0f 85 79 13 00 00 48 8b 9b c8 00 00 00 48 b8 00 00 00 00 00 fc ff df 48 8d bb 90 05 00 00 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 46 13 00 00 48 8b 9b 90 05 00 00 48 b8 00 00 00 RSP: 0018:ffffc90000007c98 EFLAGS: 00010206 RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 0000000000000100 RDX: 00000000000000b2 RSI: ffffffff83d4247d RDI: 0000000000000590 RBP: ffff88801a988c00 R08: 0000000000000003 R09: ffff88801a988d83 R10: ffffffff83d42472 R11: 0000000000000000 R12: 0000000000000003 R13: 0000000000000000 R14: ffff88801add7a80 R15: ffff88801a988cd0 FS: 00007fbb7890f700(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00000000203ff030 CR3: 0000000072ed7000 CR4: 00000000001526f0 ---------------- Code disassembly (best guess): 0: 03 80 3c 02 00 0f add 0xf00023c(%rax),%eax 6: 85 79 13 test %edi,0x13(%rcx) 9: 00 00 add %al,(%rax) b: 48 8b 9b c8 00 00 00 mov 0xc8(%rbx),%rbx 12: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax 19: fc ff df 1c: 48 8d bb 90 05 00 00 lea 0x590(%rbx),%rdi 23: 48 89 fa mov %rdi,%rdx 26: 48 c1 ea 03 shr $0x3,%rdx * 2a: 80 3c 02 00 cmpb $0x0,(%rdx,%rax,1) <-- trapping instruction 2e: 0f 85 46 13 00 00 jne 0x137a 34: 48 8b 9b 90 05 00 00 mov 0x590(%rbx),%rbx 3b: 48 rex.W 3c: b8 .byte 0xb8 3d: 00 00 add %al,(%rax)