On Fri, Jul 21, 2023 at 02:52:14AM +0200, Daniel Borkmann wrote: > On 7/20/23 5:06 PM, syzbot wrote: > > Hello, > > > > syzbot found the following issue on: > > > > HEAD commit: 03b123debcbc tcp: tcp_enter_quickack_mode() should be static > > git tree: net-next > > console+strace: https://syzkaller.appspot.com/x/log.txt?x=17ac9ffaa80000 > > kernel config: https://syzkaller.appspot.com/x/.config?x=32e3dcc11fd0d297 > > dashboard link: https://syzkaller.appspot.com/bug?extid=14736e249bce46091c18 > > compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 > > syz repro: https://syzkaller.appspot.com/x/repro.syz?x=133f36c6a80000 > > C reproducer: https://syzkaller.appspot.com/x/repro.c?x=11a8e73aa80000 > > > > Downloadable assets: > > disk image: https://storage.googleapis.com/syzbot-assets/348462fb61fa/disk-03b123de.raw.xz > > vmlinux: https://storage.googleapis.com/syzbot-assets/33375730f77f/vmlinux-03b123de.xz > > kernel image: https://storage.googleapis.com/syzbot-assets/b6882fbac041/bzImage-03b123de.xz > > > > IMPORTANT: if you fix the issue, please add the following tag to the commit: > > Reported-by: syzbot+14736e249bce46091c18@xxxxxxxxxxxxxxxxxxxxxxxxx > > Thanks, I'll take a look this evening. Did anybody post a fix for that? We are experiencing the following kernel panic in netdev commit b57e0d48b300 (net-next/main) Merge branch '100GbE' of git://git.kernel.org/pub/scm/linux/kernel/git/tnguy/next-queue [ 935.131864] ------------[ cut here ]------------ [ 935.133223] WARNING: CPU: 7 PID: 32248 at kernel/bpf/tcx.c:114 tcx_uninstall+0x158/0x1a0 [ 935.135408] Modules linked in: act_tunnel_key vxlan act_mirred act_skbedit cls_matchall nfnetlink_cttimeout act_gact cls_flower sch_ingress bonding mlx5_vfio_pci vfio_pci vfio_pci_core vfio_iommu_type1 vfio mlx5_ib mlx5_core ip6_gre ib_ipoib nf_tables rdma_ucm ib_uverbs geneve ip_gre gre ip6_tunnel tunnel6 ipip tunnel4 ib_umad iptable_raw openvswitch nsh xt_conntrack xt_MASQUERADE nf_conntrack_netlink nfnetlink xt_addrtype iptable_nat nf_nat br_netfilter rpcrdma ib_iser libiscsi scsi_transport_iscsi rdma_cm iw_cm ib_cm rpcsec_gss_krb5 auth_rpcgss oid_registry ib_core overlay zram zsmalloc fuse [last unloaded: ib_uverbs] [ 935.141679] CPU: 7 PID: 32248 Comm: devlink Not tainted 6.5.0-rc2_net_next_mlx5_89edf40 #1 [ 935.142577] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS rel-1.13.0-0-gf21b5a4aeb02-prebuilt.qemu.org 04/01/2014 [ 935.143758] RIP: 0010:tcx_uninstall+0x158/0x1a0 [ 935.144297] Code: f0 fe ff ff ba 4c 00 00 00 48 c7 c6 e7 33 27 82 48 c7 c7 c0 32 27 82 c6 05 5c 0a 3d 01 01 e8 4f a7 e8 ff 0f 0b e9 ca fe ff ff <0f> 0b eb 9d 44 0f b6 35 45 0a 3d 01 41 80 fe 01 0f 87 f6 8b 91 00 [ 935.146192] RSP: 0018:ffff8881eb853928 EFLAGS: 00010202 [ 935.146789] RAX: 0000000000000000 RBX: 0000000000000001 RCX: 0000000000000000 [ 935.147548] RDX: ffff8881066f2808 RSI: ffff888106c40000 RDI: 0000000000000000 [ 935.148328] RBP: ffff8881066f2808 R08: 0000000000000001 R09: 00000000000003fe [ 935.149081] R10: 0000000000000001 R11: 00000000fa83b2da R12: 0000000000000001 [ 935.149847] R13: ffff8881066f2808 R14: dead000000000122 R15: dead000000000100 [ 935.150490] FS: 00007fa48de38800(0000) GS:ffff88852cb80000(0000) knlGS:0000000000000000 [ 935.151213] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 935.151753] CR2: 00007fa48dd7b1e0 CR3: 0000000125f06002 CR4: 0000000000370ea0 [ 935.152378] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 935.153000] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 935.153620] Call Trace: [ 935.153918] <TASK> [ 935.154194] ? __warn+0x79/0x120 [ 935.154545] ? tcx_uninstall+0x158/0x1a0 [ 935.154936] ? report_bug+0x17c/0x190 [ 935.155320] ? handle_bug+0x3c/0x60 [ 935.155686] ? exc_invalid_op+0x14/0x70 [ 935.156088] ? asm_exc_invalid_op+0x16/0x20 [ 935.156499] ? tcx_uninstall+0x158/0x1a0 [ 935.156896] ? tcx_uninstall+0x57/0x1a0 [ 935.157287] unregister_netdevice_many_notify+0x32f/0x960 [ 935.157790] unregister_netdevice_queue+0x8d/0xe0 [ 935.158236] unregister_netdev+0x18/0x20 [ 935.158630] mlx5e_vport_rep_unload+0x30/0x90 [mlx5_core] [ 935.159221] esw_offloads_unload_rep+0x24/0x40 [mlx5_core] [ 935.159777] mlx5_eswitch_unload_vf_vports+0x7a/0xc0 [mlx5_core] [ 935.160358] mlx5_eswitch_disable_pf_vf_vports+0x15/0xa0 [mlx5_core] [ 935.160953] esw_offloads_disable+0xe/0x60 [mlx5_core] [ 935.161469] mlx5_eswitch_disable_locked+0x15a/0x180 [mlx5_core] [ 935.162058] mlx5_devlink_eswitch_mode_set+0xad/0x380 [mlx5_core] [ 935.162637] ? devlink_get_from_attrs_lock+0x9e/0x110 [ 935.163108] devlink_nl_cmd_eswitch_set_doit+0x60/0xe0 [ 935.163579] genl_family_rcv_msg_doit.isra.0+0xc2/0x110 [ 935.164086] genl_rcv_msg+0x17d/0x2b0 [ 935.164460] ? devlink_get_from_attrs_lock+0x110/0x110 [ 935.164936] ? devlink_nl_cmd_eswitch_get_doit+0x290/0x290 [ 935.165436] ? devlink_pernet_pre_exit+0xf0/0xf0 [ 935.165880] ? genl_family_rcv_msg_doit.isra.0+0x110/0x110 [ 935.166381] netlink_rcv_skb+0x54/0x100 [ 935.166769] genl_rcv+0x24/0x40 [ 935.167109] netlink_unicast+0x1f6/0x2c0 [ 935.167496] netlink_sendmsg+0x239/0x4b0 [ 935.167901] sock_sendmsg+0x38/0x60 [ 935.168265] ? _copy_from_user+0x2a/0x60 [ 935.168654] __sys_sendto+0x110/0x160 [ 935.169023] ? handle_mm_fault+0xe4/0x270 [ 935.169422] ? do_user_addr_fault+0x270/0x620 [ 935.169849] __x64_sys_sendto+0x20/0x30 [ 935.170232] do_syscall_64+0x3d/0x90 [ 935.170600] entry_SYSCALL_64_after_hwframe+0x46/0xb0 [ 935.171075] RIP: 0033:0x7fa48dd1340a [ 935.171438] Code: d8 64 89 02 48 c7 c0 ff ff ff ff eb b8 0f 1f 00 f3 0f 1e fa 41 89 ca 64 8b 04 25 18 00 00 00 85 c0 75 15 b8 2c 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 7e c3 0f 1f 44 00 00 41 54 48 83 ec 30 44 89 [ 935.172982] RSP: 002b:00007ffcd3a8a498 EFLAGS: 00000246 ORIG_RAX: 000000000000002c [ 935.173683] RAX: ffffffffffffffda RBX: 00000000008eeb00 RCX: 00007fa48dd1340a [ 935.174296] RDX: 0000000000000038 RSI: 00000000008eeb00 RDI: 0000000000000003 [ 935.174913] RBP: 00000000008ee910 R08: 00007fa48df37200 R09: 000000000000000c [ 935.175532] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 935.176166] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000001 [ 935.176790] </TASK> [ 935.177060] ---[ end trace 0000000000000000 ]--- Thanks
