[ 4184.366463][ C3] ================================================================== [ 4184.366711][ C3] BUG: KASAN: null-ptr-deref in sock_def_write_space_wfree+0x210/0x360 [ 4184.366948][ C3] Read of size 8 at addr 0000000000000008 by task swapper/3/0 [ 4184.367154][ C3] [ 4184.367229][ C3] CPU: 3 PID: 0 Comm: swapper/3 Not tainted 6.9.0-rc2-virtme #1 [ 4184.367462][ C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 4184.367783][ C3] Call Trace: [ 4184.367886][ C3] <IRQ> [ 4184.367957][ C3] dump_stack_lvl+0x82/0xd0 [ 4184.368110][ C3] kasan_report+0xbd/0xf0 [ 4184.368221][ C3] ? sock_def_write_space_wfree+0x210/0x360 [ 4184.368471][ C3] kasan_check_range+0x39/0x1c0 [ 4184.368610][ C3] sock_def_write_space_wfree+0x210/0x360 [ 4184.368758][ C3] sock_wfree+0x25f/0x3e0 [ 4184.368878][ C3] skb_release_head_state+0x7a/0x1e0 [ 4184.369014][ C3] consume_skb+0x76/0x110 [ 4184.369137][ C3] dummy_xmit+0x106/0x170 [ 4184.369241][ C3] ? trace_net_dev_start_xmit+0xff/0x170 [ 4184.369403][ C3] dev_hard_start_xmit+0x10e/0x360 [ 4184.369569][ C3] sch_direct_xmit+0x203/0x11c0 [ 4184.369716][ C3] ? __pfx_sch_direct_xmit+0x10/0x10 [ 4184.369854][ C3] __qdisc_run+0x1cd/0x3d0 [ 4184.369989][ C3] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 4184.370130][ C3] ? __pfx___qdisc_run+0x10/0x10 [ 4184.370263][ C3] ? do_raw_spin_lock+0x131/0x270 [ 4184.370407][ C3] ? __pfx_do_raw_spin_lock+0x10/0x10 [ 4184.370542][ C3] ? lock_acquire+0x32/0xc0 [ 4184.370683][ C3] ? net_tx_action+0x3a5/0x680 [ 4184.370823][ C3] net_tx_action+0x3f6/0x680 [ 4184.370960][ C3] __do_softirq+0x1f8/0x5df [ 4184.371100][ C3] irq_exit_rcu+0x97/0xc0 [ 4184.371207][ C3] sysvec_apic_timer_interrupt+0x75/0x80 [ 4184.371345][ C3] </IRQ> [ 4184.371418][ C3] <TASK> [ 4184.371486][ C3] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 4184.371681][ C3] RIP: 0010:default_idle+0xf/0x20 [ 4184.371825][ C3] Code: 4c 01 c7 4c 29 c2 e9 72 ff ff ff 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 66 90 0f 00 2d e3 cc 32 00 fb f4 <fa> c3 cc cc cc cc 66 66 2e 0f 1f 84 00 00 00 00 00 90 90 90 90 90 [ 4184.372305][ C3] RSP: 0018:ffffc9000016fdf8 EFLAGS: 00000242 [ 4184.372485][ C3] RAX: 00000000039bb1b5 RBX: 1ffff9200002dfc1 RCX: ffffffff8af34e95 [ 4184.372729][ C3] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff886ac0e4 [ 4184.372936][ C3] RBP: 0000000000000000 R08: 0000000000000001 R09: ffffed1006c3709c [ 4184.373138][ C3] R10: ffff8880361b84e3 R11: ffff8880361ad9b0 R12: 0000000000000000 [ 4184.373338][ C3] R13: ffff888001b98040 R14: dffffc0000000000 R15: 0000000000000000 [ 4184.373542][ C3] ? ct_kernel_exit.constprop.0+0xc5/0xf0 [ 4184.373680][ C3] ? cpuidle_idle_call+0x1f4/0x280 [ 4184.373821][ C3] default_idle_call+0x6d/0xb0 [ 4184.373956][ C3] cpuidle_idle_call+0x1f4/0x280 [ 4184.374090][ C3] ? __pfx_cpuidle_idle_call+0x10/0x10 [ 4184.374227][ C3] ? tsc_verify_tsc_adjust+0x5e/0x2b0 [ 4184.374368][ C3] do_idle+0xf9/0x160 [ 4184.374471][ C3] cpu_startup_entry+0x54/0x60 [ 4184.374606][ C3] start_secondary+0x21c/0x2b0 [ 4184.375032][ C3] ? __pfx_start_secondary+0x10/0x10 [ 4184.375175][ C3] common_startup_64+0x12c/0x138 [ 4184.375320][ C3] </TASK> [ 4184.375425][ C3] ================================================================== [ 4184.375638][ C3] Disabling lock debugging due to kernel taint [ 4184.375833][ C3] general protection fault, probably for non-canonical address 0xdffffc0000000001: 0000 [#1] PREEMPT SMP KASAN NOPTI [ 4184.376123][ C3] KASAN: null-ptr-deref in range [0x0000000000000008-0x000000000000000f] [ 4184.376323][ C3] CPU: 3 PID: 0 Comm: swapper/3 Tainted: G B 6.9.0-rc2-virtme #1 [ 4184.376564][ C3] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 4184.377020][ C3] RIP: 0010:sock_def_write_space_wfree+0x221/0x360 [ 4184.377196][ C3] Code: 00 4c 8b bb a0 01 00 00 be 08 00 00 00 4d 8d 77 08 4c 89 f7 e8 e0 0e 8b fe 4c 89 f2 48 b8 00 00 00 00 00 fc ff df 48 c1 ea 03 <80> 3c 02 00 0f 85 fe 00 00 00 49 8b 47 08 a8 04 0f 85 dc fe ff ff [ 4184.377669][ C3] RSP: 0018:ffffc90000288c30 EFLAGS: 00010202 [ 4184.377843][ C3] RAX: dffffc0000000000 RBX: ffff88800bc01140 RCX: ffffffff8859564a [ 4184.378040][ C3] RDX: 0000000000000001 RSI: 0000000000000008 RDI: ffffffff8dafda00 [ 4184.378335][ C3] RBP: ffff88800bc011a0 R08: 0000000000000001 R09: fffffbfff1b5fb40 [ 4184.378540][ C3] R10: ffffffff8dafda07 R11: 205d334320202020 R12: 0000000000000000 [ 4184.378740][ C3] R13: ffff88800bc012c0 R14: 0000000000000008 R15: 0000000000000000 [ 4184.378943][ C3] FS: 0000000000000000(0000) GS:ffff888036180000(0000) knlGS:0000000000000000 [ 4184.379175][ C3] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 4184.379344][ C3] CR2: 00007f7dfd1f0ac0 CR3: 0000000032b38003 CR4: 0000000000770ef0 [ 4184.379629][ C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 4184.379833][ C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 4184.380040][ C3] PKRU: 55555554 [ 4184.380223][ C3] Call Trace: [ 4184.380326][ C3] <IRQ> [ 4184.380393][ C3] ? die_addr+0x41/0xa0 [ 4184.380496][ C3] ? exc_general_protection+0x149/0x220 [ 4184.380638][ C3] ? asm_exc_general_protection+0x26/0x30 [ 4184.380855][ C3] ? add_taint+0x2a/0x90 [ 4184.380958][ C3] ? sock_def_write_space_wfree+0x221/0x360 [ 4184.381128][ C3] sock_wfree+0x25f/0x3e0 [ 4184.381232][ C3] skb_release_head_state+0x7a/0x1e0 [ 4184.381368][ C3] consume_skb+0x76/0x110 [ 4184.381470][ C3] dummy_xmit+0x106/0x170 [ 4184.381571][ C3] ? trace_net_dev_start_xmit+0xff/0x170 [ 4184.381716][ C3] dev_hard_start_xmit+0x10e/0x360 [ 4184.381852][ C3] sch_direct_xmit+0x203/0x11c0 [ 4184.382062][ C3] ? __pfx_sch_direct_xmit+0x10/0x10 [ 4184.382198][ C3] __qdisc_run+0x1cd/0x3d0 [ 4184.382332][ C3] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 4184.382466][ C3] ? __pfx___qdisc_run+0x10/0x10 [ 4184.382600][ C3] ? do_raw_spin_lock+0x131/0x270 [ 4184.382807][ C3] ? __pfx_do_raw_spin_lock+0x10/0x10 [ 4184.382945][ C3] ? lock_acquire+0x32/0xc0 [ 4184.383077][ C3] ? net_tx_action+0x3a5/0x680 [ 4184.383209][ C3] net_tx_action+0x3f6/0x680 [ 4184.383431][ C3] __do_softirq+0x1f8/0x5df [ 4184.383568][ C3] irq_exit_rcu+0x97/0xc0 [ 4184.383667][ C3] sysvec_apic_timer_interrupt+0x75/0x80 [ 4184.383802][ C3] </IRQ> [ 4184.383872][ C3] <TASK> [ 4184.383941][ C3] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 4184.384115][ C3] RIP: 0010:default_idle+0xf/0x20 [ 4184.384256][ C3] Code: 4c 01 c7 4c 29 c2 e9 72 ff ff ff 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 66 90 0f 00 2d e3 cc 32 00 fb f4 <fa> c3 cc cc cc cc 66 66 2e 0f 1f 84 00 00 00 00 00 90 90 90 90 90 [ 4184.384822][ C3] RSP: 0018:ffffc9000016fdf8 EFLAGS: 00000242 [ 4184.385069][ C3] RAX: 00000000039bb1b5 RBX: 1ffff9200002dfc1 RCX: ffffffff8af34e95 [ 4184.385280][ C3] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff886ac0e4 [ 4184.385487][ C3] RBP: 0000000000000000 R08: 0000000000000001 R09: ffffed1006c3709c [ 4184.385690][ C3] R10: ffff8880361b84e3 R11: ffff8880361ad9b0 R12: 0000000000000000 [ 4184.385982][ C3] R13: ffff888001b98040 R14: dffffc0000000000 R15: 0000000000000000 [ 4184.386186][ C3] ? ct_kernel_exit.constprop.0+0xc5/0xf0 [ 4184.386325][ C3] ? cpuidle_idle_call+0x1f4/0x280 [ 4184.386457][ C3] default_idle_call+0x6d/0xb0 [ 4184.386590][ C3] cpuidle_idle_call+0x1f4/0x280 [ 4184.386714][ C3] ? __pfx_cpuidle_idle_call+0x10/0x10 [ 4184.386850][ C3] ? tsc_verify_tsc_adjust+0x5e/0x2b0 [ 4184.386991][ C3] do_idle+0xf9/0x160 [ 4184.387169][ C3] cpu_startup_entry+0x54/0x60 [ 4184.387304][ C3] start_secondary+0x21c/0x2b0 [ 4184.387438][ C3] ? __pfx_start_secondary+0x10/0x10 [ 4184.387572][ C3] common_startup_64+0x12c/0x138 [ 4184.387784][ C3] </TASK> [ 4184.387962][ C3] Modules linked in: sctp bonding sch_etf sch_fq cls_matchall ip6_gre gre act_mirred act_tunnel_key bareudp xfrm_interface xt_length act_ct nf_flow_table nf_nat nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 drop_monitor netdevsim psample act_gact cls_flower sch_ingress poly1305_generic libpoly1305 chacha_generic libchacha chacha20poly1305 tls sha1_generic xfrm_user xt_policy nft_compat nf_tables libcrc32c vxlan mpls_iptunnel mpls_router [last unloaded: test_blackhole_dev] [ 4184.389447][ C3] ---[ end trace 0000000000000000 ]--- [ 4184.389582][ C3] RIP: 0010:sock_def_write_space_wfree+0x221/0x360 [ 4184.389755][ C3] Code: 00 4c 8b bb a0 01 00 00 be 08 00 00 00 4d 8d 77 08 4c 89 f7 e8 e0 0e 8b fe 4c 89 f2 48 b8 00 00 00 00 00 fc ff df 48 c1 ea 03 <80> 3c 02 00 0f 85 fe 00 00 00 49 8b 47 08 a8 04 0f 85 dc fe ff ff [ 4184.390315][ C3] RSP: 0018:ffffc90000288c30 EFLAGS: 00010202 [ 4184.390485][ C3] RAX: dffffc0000000000 RBX: ffff88800bc01140 RCX: ffffffff8859564a [ 4184.390687][ C3] RDX: 0000000000000001 RSI: 0000000000000008 RDI: ffffffff8dafda00 [ 4184.391050][ C3] RBP: ffff88800bc011a0 R08: 0000000000000001 R09: fffffbfff1b5fb40 [ 4184.391250][ C3] R10: ffffffff8dafda07 R11: 205d334320202020 R12: 0000000000000000 [ 4184.391532][ C3] R13: ffff88800bc012c0 R14: 0000000000000008 R15: 0000000000000000 [ 4184.391734][ C3] FS: 0000000000000000(0000) GS:ffff888036180000(0000) knlGS:0000000000000000 [ 4184.391971][ C3] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 4184.392301][ C3] CR2: 00007f7dfd1f0ac0 CR3: 0000000032b38003 CR4: 0000000000770ef0 [ 4184.392512][ C3] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 4184.392710][ C3] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 4184.392989][ C3] PKRU: 55555554 [ 4184.393091][ C3] Kernel panic - not syncing: Fatal exception in interrupt [ 4184.393485][ C3] Kernel Offset: 0x7200000 from 0xffffffff81000000 (relocation range: 0xffffffff80000000-0xffffffffbfffffff) [ 4184.393790][ C3] ---[ end Kernel panic - not syncing: Fatal exception in interrupt ]--- WAIT TIMEOUT stderr Ctrl-C stderr Ctrl-C stderr WAIT TIMEOUT stderr