general protection fault, probably for non-canonical address 0xdffffc0000000066: 0000 [#1] PREEMPT SMP KASAN KASAN: null-ptr-deref in range [0x0000000000000330-0x0000000000000337] CPU: 1 PID: 25106 Comm: syz-executor.3 Not tainted 5.7.0-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:ax25_send_frame+0xe1/0x660 net/ax25/ax25_out.c:56 Code: c6 00 00 48 85 c0 0f 85 0c 04 00 00 e8 e8 1c 6f fa 49 8d bc 24 30 03 00 00 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 d2 04 00 00 49 8b 84 24 30 03 00 00 48 85 c0 48 RSP: 0018:ffffc90000da8ab8 EFLAGS: 00010206 RAX: dffffc0000000000 RBX: ffff8880a892e808 RCX: 1ffffffff1516a22 RDX: 0000000000000066 RSI: ffffffff87047508 RDI: 0000000000000330 RBP: ffffffff8d25d100 R08: 0000000000000000 R09: 0000000000000001 R10: ffffffff8c31db37 R11: fffffbfff1863b66 R12: 0000000000000000 R13: 0000000000000104 R14: 0000000000000000 R15: ffff888095edf340 FS: 00007ff70391e700(0000) GS:ffff8880ae700000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007ff7038dbdb8 CR3: 0000000090083000 CR4: 00000000001406e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: rose_send_frame+0xcc/0x2f0 net/rose/rose_link.c:106 rose_transmit_clear_request+0x1de/0x290 net/rose/rose_link.c:255 rose_rx_call_request+0x488/0x1960 net/rose/af_rose.c:996 rose_loopback_timer+0x15d/0x470 net/rose/rose_loopback.c:100 call_timer_fn+0x1ac/0x780 kernel/time/timer.c:1404 expire_timers kernel/time/timer.c:1449 [inline] __run_timers kernel/time/timer.c:1773 [inline] __run_timers kernel/time/timer.c:1740 [inline] run_timer_softirq+0x623/0x1600 kernel/time/timer.c:1786 __do_softirq+0x26c/0x9f7 kernel/softirq.c:292 invoke_softirq kernel/softirq.c:373 [inline] irq_exit+0x192/0x1d0 kernel/softirq.c:413 exiting_irq arch/x86/include/asm/apic.h:546 [inline] smp_apic_timer_interrupt+0x19e/0x600 arch/x86/kernel/apic/apic.c:1107 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:829 RIP: 0010:unwind_next_frame+0x12d6/0x1df0 arch/x86/kernel/unwind_orc.c:587 Code: 02 48 b9 00 00 00 00 00 fc ff df 49 8d 57 40 48 89 f8 48 c1 e8 03 0f b6 34 08 49 8d 40 03 49 89 c1 49 c1 e9 03 41 0f b6 0c 09 <49> 89 f9 41 83 e1 07 44 38 ce 41 0f 9e c1 40 84 f6 40 0f 95 c6 41 RSP: 0018:ffffc90001ec7210 EFLAGS: 00000a02 ORIG_RAX: ffffffffffffff13 RAX: ffffffff8b01d0fb RBX: 1ffff920003d8e4a RCX: 0000000000000000 RDX: ffffc90001ec7328 RSI: 0000000000000000 RDI: ffffffff8b01d0fa RBP: 0000000000000001 R08: ffffffff8b01d0f8 R09: 1ffffffff1603a1f R10: 00000000000348e5 R11: 000000000007001e R12: ffffc90001ec7858 R13: ffffc90001ec731d R14: ffffc90001ec7338 R15: ffffc90001ec72e8 arch_stack_walk+0x81/0xf0 arch/x86/kernel/stacktrace.c:25 stack_trace_save+0x8c/0xc0 kernel/stacktrace.c:123 save_stack+0x1b/0x40 mm/kasan/common.c:48 set_track mm/kasan/common.c:56 [inline] __kasan_kmalloc mm/kasan/common.c:494 [inline] __kasan_kmalloc.constprop.0+0xbf/0xd0 mm/kasan/common.c:467 slab_post_alloc_hook mm/slab.h:586 [inline] slab_alloc mm/slab.c:3320 [inline] kmem_cache_alloc+0x11b/0x740 mm/slab.c:3484 kmem_cache_zalloc include/linux/slab.h:659 [inline] __kernfs_new_node+0xd4/0x880 fs/kernfs/dir.c:627 kernfs_new_node+0x93/0x120 fs/kernfs/dir.c:689 __kernfs_create_file+0x51/0x350 fs/kernfs/file.c:1001 sysfs_add_file_mode_ns+0x224/0x520 fs/sysfs/file.c:305 create_files fs/sysfs/group.c:64 [inline] internal_create_group+0x327/0xba0 fs/sysfs/group.c:149 add_port drivers/infiniband/core/sysfs.c:1118 [inline] ib_setup_port_attrs+0x9d8/0x1320 drivers/infiniband/core/sysfs.c:1347 add_one_compat_dev drivers/infiniband/core/device.c:906 [inline] add_one_compat_dev+0x4af/0x800 drivers/infiniband/core/device.c:857 rdma_dev_init_net+0x2dc/0x480 drivers/infiniband/core/device.c:1122 ops_init+0xaf/0x420 net/core/net_namespace.c:151 setup_net+0x2de/0x860 net/core/net_namespace.c:341 copy_net_ns+0x293/0x590 net/core/net_namespace.c:482 create_new_namespaces+0x3fb/0xb30 kernel/nsproxy.c:110 unshare_nsproxy_namespaces+0xbd/0x1f0 kernel/nsproxy.c:231 ksys_unshare+0x43d/0x8e0 kernel/fork.c:2984 __do_sys_unshare kernel/fork.c:3052 [inline] __se_sys_unshare kernel/fork.c:3050 [inline] __x64_sys_unshare+0x2d/0x40 kernel/fork.c:3050 do_syscall_64+0xf6/0x7d0 arch/x86/entry/common.c:295 entry_SYSCALL_64_after_hwframe+0x49/0xb3 RIP: 0033:0x45ca59 Code: 0d b7 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 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 0f 83 db b6 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007ff70391dc78 EFLAGS: 00000246 ORIG_RAX: 0000000000000110 RAX: ffffffffffffffda RBX: 000000000050aea0 RCX: 000000000045ca59 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000040000000 RBP: 000000000078bf00 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff R13: 0000000000000c71 R14: 00000000004cec7a R15: 00007ff70391e6d4 Modules linked in: ---[ end trace 24ed2b543c2964ac ]--- RIP: 0010:ax25_send_frame+0xe1/0x660 net/ax25/ax25_out.c:56 Code: c6 00 00 48 85 c0 0f 85 0c 04 00 00 e8 e8 1c 6f fa 49 8d bc 24 30 03 00 00 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 d2 04 00 00 49 8b 84 24 30 03 00 00 48 85 c0 48 RSP: 0018:ffffc90000da8ab8 EFLAGS: 00010206 RAX: dffffc0000000000 RBX: ffff8880a892e808 RCX: 1ffffffff1516a22 RDX: 0000000000000066 RSI: ffffffff87047508 RDI: 0000000000000330 RBP: ffffffff8d25d100 R08: 0000000000000000 R09: 0000000000000001 R10: ffffffff8c31db37 R11: fffffbfff1863b66 R12: 0000000000000000 R13: 0000000000000104 R14: 0000000000000000 R15: ffff888095edf340 FS: 00007ff70391e700(0000) GS:ffff8880ae700000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007ff7038dbdb8 CR3: 0000000090083000 CR4: 00000000001406e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400