IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready 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: 31993 Comm: kworker/0:4 Not tainted 5.4.0-rc3-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Workqueue: events nsim_dev_trap_report_work RIP: 0010:nsim_dev_trap_report_work+0xba/0xa80 drivers/net/netdevsim/dev.c:409 Code: 48 3b 45 88 48 89 45 d0 0f 84 2f 07 00 00 49 bc 00 00 00 00 00 fc ff df 48 8b 45 d0 48 05 68 01 00 00 48 89 45 90 48 c1 e8 03 <42> 80 3c 20 00 0f 85 56 09 00 00 48 8b 45 d0 48 8b 98 68 01 00 00 RSP: 0018:ffff88808b78fcb8 EFLAGS: 00010a06 RAX: 1bd5a0000000004d RBX: ffff88809676cdc0 RCX: 0000000000000000 RDX: 0000000000000001 RSI: 0000000000000004 RDI: ffffffff8a903420 RBP: ffff88808b78fd58 R08: ffffed1014faa696 R09: ffffed1014faa696 R10: ffffed1014faa695 R11: ffff8880a7d534ab R12: dffffc0000000000 R13: ffff888092fe8000 R14: 0000000000000022 R15: 0000000000000022 FS: 0000000000000000(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f9821e99000 CR3: 0000000094d11000 CR4: 00000000001406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: process_one_work+0x856/0x1630 kernel/workqueue.c:2269 worker_thread+0x85/0xb60 kernel/workqueue.c:2415 kthread+0x331/0x3f0 kernel/kthread.c:255 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:352 Modules linked in: ---[ end trace f2d0294c1585ab44 ]--- RIP: 0010:nsim_dev_trap_report_work+0xba/0xa80 drivers/net/netdevsim/dev.c:409 Code: 48 3b 45 88 48 89 45 d0 0f 84 2f 07 00 00 49 bc 00 00 00 00 00 fc ff df 48 8b 45 d0 48 05 68 01 00 00 48 89 45 90 48 c1 e8 03 <42> 80 3c 20 00 0f 85 56 09 00 00 48 8b 45 d0 48 8b 98 68 01 00 00 RSP: 0018:ffff88808b78fcb8 EFLAGS: 00010a06 RAX: 1bd5a0000000004d RBX: ffff88809676cdc0 RCX: 0000000000000000 RDX: 0000000000000001 RSI: 0000000000000004 RDI: ffffffff8a903420 RBP: ffff88808b78fd58 R08: ffffed1014faa696 R09: ffffed1014faa696 R10: ffffed1014faa695 R11: ffff8880a7d534ab R12: dffffc0000000000 R13: ffff888092fe8000 R14: 0000000000000022 R15: 0000000000000022 FS: 0000000000000000(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f9821e99000 CR3: 0000000094d11000 CR4: 00000000001406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400