./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor2641915712 <...> forked to background, child pid 4648 no interfaces have a carrier [ 51.930635][ T4649] 8021q: adding VLAN 0 to HW filter on device bond0 [ 51.947233][ T4649] eql: remember to turn off Van-Jacobson compression on your slave devices Starting sshd: OK syzkaller Warning: Permanently added '10.128.10.33' (ECDSA) to the list of known hosts. execve("./syz-executor2641915712", ["./syz-executor2641915712"], 0x7fff84282f80 /* 10 vars */) = 0 brk(NULL) = 0x555555d87000 brk(0x555555d87c40) = 0x555555d87c40 arch_prctl(ARCH_SET_FS, 0x555555d87300) = 0 uname({sysname="Linux", nodename="syzkaller", ...}) = 0 readlink("/proc/self/exe", "/root/syz-executor2641915712", 4096) = 28 brk(0x555555da8c40) = 0x555555da8c40 brk(0x555555da9000) = 0x555555da9000 mprotect(0x7fc550b17000, 16384, PROT_READ) = 0 mmap(0x1ffff000, 4096, PROT_NONE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x1ffff000 mmap(0x20000000, 16777216, PROT_READ|PROT_WRITE|PROT_EXEC, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x20000000 mmap(0x21000000, 4096, PROT_NONE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x21000000 socket(AF_NETLINK, SOCK_RAW, NETLINK_ROUTE) = 3 socketpair(AF_UNIX, SOCK_RAW, 0, [4, 5]) = 0 ioctl(5, SIOCGIFINDEX, {ifr_name="lo", ifr_ifindex=1}) = 0 syzkaller login: [ 76.682586][ T5073] general protection fault, probably for non-canonical address 0xdffffc0000000002: 0000 [#1] PREEMPT SMP KASAN [ 76.694422][ T5073] KASAN: null-ptr-deref in range [0x0000000000000010-0x0000000000000017] [ 76.702875][ T5073] CPU: 1 PID: 5073 Comm: syz-executor264 Not tainted 6.2.0-rc6-syzkaller-01486-g0b34d68049b0 #0 [ 76.713314][ T5073] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/21/2023 [ 76.723554][ T5073] RIP: 0010:hrtimer_active+0x6f/0x1f0 [ 76.728996][ T5073] Code: 01 f0 48 89 44 24 10 e8 cf 87 10 00 48 8b 44 24 08 80 38 00 0f 85 71 01 00 00 49 8b 6d 30 48 8d 45 10 48 89 04 24 48 c1 e8 03 <42> 0f b6 04 30 84 c0 74 08 3c 03 0f 8e 42 01 00 00 8b 5d 10 31 ff [ 76.748624][ T5073] RSP: 0018:ffffc90003b0f360 EFLAGS: 00010202 [ 76.754701][ T5073] RAX: 0000000000000002 RBX: ffff88802a504340 RCX: 0000000000000000 [ 76.762679][ T5073] RDX: ffff888020509d40 RSI: ffffffff817073c1 RDI: ffff88802a504340 [ 76.770657][ T5073] RBP: 0000000000000000 R08: 0000000000000007 R09: fffffffffffff000 [ 76.778636][ T5073] R10: ffffffffffffffea R11: 0000000000000000 R12: 0000000000000000 [ 76.786620][ T5073] R13: ffff88802a504340 R14: dffffc0000000000 R15: 0000000080010000 [ 76.794620][ T5073] FS: 0000555555d87300(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000 [ 76.804223][ T5073] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 76.810836][ T5073] CR2: 00000000004585c0 CR3: 0000000078614000 CR4: 00000000003506e0 [ 76.818831][ T5073] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 76.826834][ T5073] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 76.835981][ T5073] Call Trace: [ 76.839299][ T5073] [ 76.842246][ T5073] hrtimer_try_to_cancel+0x25/0x1e0 [ 76.847492][ T5073] hrtimer_cancel+0x17/0x40 [ 76.852029][ T5073] cake_destroy+0x19/0x80 [ 76.856395][ T5073] ? cake_reconfigure+0x1830/0x1830 [ 76.861633][ T5073] qdisc_create+0xaca/0x1150 [ 76.866693][ T5073] ? tc_get_qdisc+0xb40/0xb40 [ 76.871410][ T5073] tc_modify_qdisc+0x488/0x19c0 [ 76.876303][ T5073] ? qdisc_create+0x1150/0x1150 [ 76.881191][ T5073] ? bpf_lsm_capable+0x9/0x10 [ 76.885901][ T5073] ? qdisc_create+0x1150/0x1150 [ 76.890807][ T5073] rtnetlink_rcv_msg+0x43e/0xca0 [ 76.896216][ T5073] ? rtnl_getlink+0xb00/0xb00 [ 76.900933][ T5073] ? lockdep_hardirqs_on_prepare+0x410/0x410 [ 76.907038][ T5073] ? do_syscall_64+0x39/0xb0 [ 76.911665][ T5073] ? lockdep_hardirqs_on_prepare+0x410/0x410 [ 76.917705][ T5073] netlink_rcv_skb+0x165/0x440 [ 76.922522][ T5073] ? rtnl_getlink+0xb00/0xb00 [ 76.927246][ T5073] ? netlink_ack+0x1370/0x1370 [ 76.932071][ T5073] ? netlink_deliver_tap+0x1b1/0xc50 [ 76.937571][ T5073] netlink_unicast+0x547/0x7f0 [ 76.942411][ T5073] ? netlink_attachskb+0x890/0x890 [ 76.947567][ T5073] ? __virt_addr_valid+0x61/0x2e0 [ 76.952652][ T5073] ? __phys_addr_symbol+0x30/0x70 [ 76.957712][ T5073] ? __check_object_size+0x2e2/0x5a0 [ 76.963221][ T5073] netlink_sendmsg+0x91b/0xe10 [ 76.968046][ T5073] ? netlink_unicast+0x7f0/0x7f0 [ 76.973061][ T5073] ? bpf_lsm_socket_sendmsg+0x9/0x10 [ 76.978373][ T5073] ? netlink_unicast+0x7f0/0x7f0 [ 76.983614][ T5073] sock_sendmsg+0xde/0x190 [ 76.988077][ T5073] ____sys_sendmsg+0x71c/0x900 [ 76.992872][ T5073] ? copy_msghdr_from_user+0xfc/0x150 [ 76.998280][ T5073] ? kernel_sendmsg+0x50/0x50 [ 77.003164][ T5073] ? lockdep_hardirqs_on_prepare+0x410/0x410 [ 77.009185][ T5073] ___sys_sendmsg+0x110/0x1b0 [ 77.013903][ T5073] ? do_recvmmsg+0x6e0/0x6e0 [ 77.018537][ T5073] ? lock_release+0x810/0x810 [ 77.023234][ T5073] ? ptrace_stop.part.0+0x4a3/0x8e0 [ 77.028466][ T5073] ? do_raw_spin_lock+0x124/0x2b0 [ 77.033526][ T5073] ? rwlock_bug.part.0+0x90/0x90 [ 77.038503][ T5073] ? _raw_spin_lock_irq+0x45/0x50 [ 77.043560][ T5073] ? __fget_light+0x20a/0x270 [ 77.048261][ T5073] __sys_sendmsg+0xf7/0x1c0 [ 77.052793][ T5073] ? __sys_sendmsg_sock+0x40/0x40 [ 77.057862][ T5073] ? lock_downgrade+0x6e0/0x6e0 [ 77.062736][ T5073] ? lockdep_hardirqs_on+0x7d/0x100 [ 77.067965][ T5073] ? _raw_spin_unlock_irq+0x2e/0x50 [ 77.073229][ T5073] ? ptrace_notify+0xfe/0x140 [ 77.077941][ T5073] do_syscall_64+0x39/0xb0 [ 77.082397][ T5073] entry_SYSCALL_64_after_hwframe+0x63/0xcd [ 77.088433][ T5073] RIP: 0033:0x7fc550aaacb9 [ 77.092876][ T5073] Code: 28 c3 e8 2a 14 00 00 66 2e 0f 1f 84 00 00 00 00 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 c0 ff ff ff f7 d8 64 89 01 48 [ 77.112532][ T5073] RSP: 002b:00007ffc12ae62e8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 77.121079][ T5073] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fc550aaacb9 [ 77.129073][ T5073] RDX: 0000000000000000 RSI: 0000000020000040 RDI: 0000000000000003 [ 77.137072][ T5073] RBP: 00007fc550a6ee60 R08: 00000000ffffffff R09: 0000000000000000 [ 77.145091][ T5073] R10: 00000000ffffffff R11: 0000000000000246 R12: 00007fc550a6eef0 [ 77.156398][ T5073] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 77.164556][ T5073] [ 77.167590][ T5073] Modules linked in: [ 77.172046][ T5073] ---[ end trace 0000000000000000 ]--- [ 77.177634][ T5073] RIP: 0010:hrtimer_active+0x6f/0x1f0 [ 77.183087][ T5073] Code: 01 f0 48 89 44 24 10 e8 cf 87 10 00 48 8b 44 24 08 80 38 00 0f 85 71 01 00 00 49 8b 6d 30 48 8d 45 10 48 89 04 24 48 c1 e8 03 <42> 0f b6 04 30 84 c0 74 08 3c 03 0f 8e 42 01 00 00 8b 5d 10 31 ff [ 77.202814][ T5073] RSP: 0018:ffffc90003b0f360 EFLAGS: 00010202 [ 77.208957][ T5073] RAX: 0000000000000002 RBX: ffff88802a504340 RCX: 0000000000000000 [ 77.217595][ T5073] RDX: ffff888020509d40 RSI: ffffffff817073c1 RDI: ffff88802a504340 [ 77.225723][ T5073] RBP: 0000000000000000 R08: 0000000000000007 R09: fffffffffffff000 [ 77.233761][ T5073] R10: ffffffffffffffea R11: 0000000000000000 R12: 0000000000000000 [ 77.241830][ T5073] R13: ffff88802a504340 R14: dffffc0000000000 R15: 0000000080010000 [ 77.249855][ T5073] FS: 0000555555d87300(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000 [ 77.258908][ T5073] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 77.265909][ T5073] CR2: 000055f47be0c6f8 CR3: 0000000078614000 CR4: 00000000003506f0 [ 77.273921][ T5073] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 77.281977][ T5073] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 77.290148][ T5073] Kernel panic - not syncing: Fatal exception [ 77.296717][ T5073] Kernel Offset: disabled [ 77.301063][ T5073] Rebooting in 86400 seconds..