kasan: CONFIG_KASAN_INLINE enabled kasan: GPF could be caused by NULL-ptr deref or user memory access general protection fault: 0000 [#1] PREEMPT SMP KASAN CPU: 0 PID: 23765 Comm: syz-executor.2 Not tainted 5.0.0+ #8 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:strlen+0x1f/0xa0 lib/string.c:483 Code: 00 66 2e 0f 1f 84 00 00 00 00 00 48 b8 00 00 00 00 00 fc ff df 55 48 89 fa 48 89 e5 48 c1 ea 03 41 54 49 89 fc 53 48 83 ec 08 <0f> b6 04 02 48 89 fa 83 e2 07 38 d0 7f 04 84 c0 75 4d 41 80 3c 24 RSP: 0018:ffff88801b96f080 EFLAGS: 00010082 RAX: dffffc0000000000 RBX: ffff88809fe08428 RCX: 0000000000000000 kobject: 'loop0' (00000000c40c285a): kobject_uevent_env RDX: 1d00000000200062 RSI: ffff8880ae82c831 RDI: e800000001000313 RBP: ffff88801b96f098 R08: 0000000000000000 R09: 0000000000000001 R10: ffffed1015d05bcf R11: 0000000000000001 R12: e800000001000313 R13: 0000000000000000 R14: ffff8880ae82c831 R15: ffff88801b96f168 FS: 00007f08e786c700(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 kobject: 'loop0' (00000000c40c285a): fill_kobj_path: path = '/devices/virtual/block/loop0' CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000000000 CR3: 000000004f616000 CR4: 00000000001426f0 Call Trace: trace_event_get_offsets_lock_acquire include/trace/events/lock.h:13 [inline] perf_trace_lock_acquire+0xb9/0x580 include/trace/events/lock.h:13 trace_lock_acquire include/trace/events/lock.h:13 [inline] lock_acquire+0x29c/0x3f0 kernel/locking/lockdep.c:3840 __raw_spin_lock include/linux/spinlock_api_smp.h:142 [inline] _raw_spin_lock+0x2f/0x40 kernel/locking/spinlock.c:144 spin_lock include/linux/spinlock.h:329 [inline] __queue_work+0x23d/0x1180 kernel/workqueue.c:1437 __queue_delayed_work+0x1d6/0x270 kernel/workqueue.c:1542 mod_delayed_work_on+0xd8/0x200 kernel/workqueue.c:1616 mod_delayed_work include/linux/workqueue.h:542 [inline] addrconf_mod_dad_work+0x3f/0xa0 net/ipv6/addrconf.c:328 addrconf_dad_start+0x76/0xb0 net/ipv6/addrconf.c:4012 addrconf_add_linklocal+0x28c/0x3c0 net/ipv6/addrconf.c:3191 addrconf_addr_gen+0x34d/0x3a0 net/ipv6/addrconf.c:3314 addrconf_dev_config+0x1ea/0x2c0 net/ipv6/addrconf.c:3357 addrconf_notify+0x3c5/0x2280 net/ipv6/addrconf.c:3592 notifier_call_chain+0xc7/0x240 kernel/notifier.c:93 __raw_notifier_call_chain kernel/notifier.c:394 [inline] raw_notifier_call_chain+0x2e/0x40 kernel/notifier.c:401 call_netdevice_notifiers_info+0x3f/0x90 net/core/dev.c:1739 call_netdevice_notifiers_extack net/core/dev.c:1751 [inline] call_netdevice_notifiers net/core/dev.c:1765 [inline] __dev_notify_flags+0x121/0x2c0 net/core/dev.c:7605 dev_change_flags+0x10d/0x170 net/core/dev.c:7643 devinet_ioctl+0x1396/0x1c60 net/ipv4/devinet.c:1104 inet_ioctl+0x1fc/0x370 net/ipv4/af_inet.c:954 packet_ioctl+0xcb/0x2b0 net/packet/af_packet.c:4099 sock_do_ioctl+0xde/0x300 net/socket.c:972 sock_ioctl+0x32b/0x610 net/socket.c:1096 vfs_ioctl fs/ioctl.c:46 [inline] file_ioctl fs/ioctl.c:509 [inline] do_vfs_ioctl+0xd6e/0x1390 fs/ioctl.c:696 ksys_ioctl+0xab/0xd0 fs/ioctl.c:713 __do_sys_ioctl fs/ioctl.c:720 [inline] __se_sys_ioctl fs/ioctl.c:718 [inline] __x64_sys_ioctl+0x73/0xb0 fs/ioctl.c:718 do_syscall_64+0x103/0x610 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x457f29 Code: ad b8 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 7b b8 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007f08e786bc78 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000457f29 RDX: 0000000020000240 RSI: 0000000000008914 RDI: 0000000000000004 RBP: 000000000073bf00 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007f08e786c6d4 R13: 00000000004c35d0 R14: 00000000004d6408 R15: 00000000ffffffff Modules linked in: ---[ end trace 2c7811a1cf58c24e ]--- RIP: 0010:strlen+0x1f/0xa0 lib/string.c:483 Code: 00 66 2e 0f 1f 84 00 00 00 00 00 48 b8 00 00 00 00 00 fc ff df 55 48 89 fa 48 89 e5 48 c1 ea 03 41 54 49 89 fc 53 48 83 ec 08 <0f> b6 04 02 48 89 fa 83 e2 07 38 d0 7f 04 84 c0 75 4d 41 80 3c 24 RSP: 0018:ffff88801b96f080 EFLAGS: 00010082 RAX: dffffc0000000000 RBX: ffff88809fe08428 RCX: 0000000000000000 RDX: 1d00000000200062 RSI: ffff8880ae82c831 RDI: e800000001000313 RBP: ffff88801b96f098 R08: 0000000000000000 R09: 0000000000000001 R10: ffffed1015d05bcf R11: 0000000000000001 R12: e800000001000313 kobject: 'kvm' (000000007d76adfd): kobject_uevent_env R13: 0000000000000000 R14: ffff8880ae82c831 R15: ffff88801b96f168 FS: 00007f08e786c700(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000000000 CR3: 000000004f616000 CR4: 00000000001426f0