INFO: task khugepaged:37 blocked for more than 143 seconds. Not tainted 6.11.0-rc5-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:khugepaged state:D stack:28000 pid:37 tgid:37 ppid:2 flags:0x00004000 Call Trace: context_switch kernel/sched/core.c:5188 [inline] __schedule+0xe37/0x5490 kernel/sched/core.c:6529 __schedule_loop kernel/sched/core.c:6606 [inline] schedule+0xe7/0x350 kernel/sched/core.c:6621 schedule_timeout+0x258/0x2a0 kernel/time/timer.c:2557 do_wait_for_common kernel/sched/completion.c:95 [inline] __wait_for_common+0x3de/0x5f0 kernel/sched/completion.c:116 __flush_work+0x776/0xc30 kernel/workqueue.c:4212 __lru_add_drain_all+0x52c/0x740 mm/swap.c:920 khugepaged_do_scan mm/khugepaged.c:2501 [inline] khugepaged+0x108/0x1600 mm/khugepaged.c:2570 kthread+0x2c1/0x3a0 kernel/kthread.c:389 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244 INFO: task syz.0.906:7654 blocked for more than 144 seconds. Not tainted 6.11.0-rc5-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz.0.906 state:D stack:27168 pid:7654 tgid:7653 ppid:5227 flags:0x00004004 Call Trace: context_switch kernel/sched/core.c:5188 [inline] __schedule+0xe37/0x5490 kernel/sched/core.c:6529 __schedule_loop kernel/sched/core.c:6606 [inline] schedule+0xe7/0x350 kernel/sched/core.c:6621 schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6678 __mutex_lock_common kernel/locking/mutex.c:684 [inline] __mutex_lock+0x5b8/0x9c0 kernel/locking/mutex.c:752 __lru_add_drain_all+0x69/0x740 mm/swap.c:875 do_migrate_pages+0xaa/0x690 mm/mempolicy.c:1117 kernel_migrate_pages+0x5b2/0x750 mm/mempolicy.c:1707 __do_sys_migrate_pages mm/mempolicy.c:1725 [inline] __se_sys_migrate_pages mm/mempolicy.c:1721 [inline] __x64_sys_migrate_pages+0x96/0x100 mm/mempolicy.c:1721 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f58eab79e79 RSP: 002b:00007f58eb963038 EFLAGS: 00000246 ORIG_RAX: 0000000000000100 RAX: ffffffffffffffda RBX: 00007f58ead15f80 RCX: 00007f58eab79e79 RDX: 00000000200002c0 RSI: 0000000000000003 RDI: 0000000000000000 RBP: 00007f58eabe793e R08: 0000000000000000 R09: 0000000000000000 R10: 0000000020000300 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007f58ead15f80 R15: 00007ffe4170e108 INFO: task syz.2.907:7656 blocked for more than 145 seconds. Not tainted 6.11.0-rc5-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz.2.907 state:D stack:29008 pid:7656 tgid:7655 ppid:5231 flags:0x00004004 Call Trace: context_switch kernel/sched/core.c:5188 [inline] __schedule+0xe37/0x5490 kernel/sched/core.c:6529 __schedule_loop kernel/sched/core.c:6606 [inline] schedule+0xe7/0x350 kernel/sched/core.c:6621 schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6678 __mutex_lock_common kernel/locking/mutex.c:684 [inline] __mutex_lock+0x5b8/0x9c0 kernel/locking/mutex.c:752 __lru_add_drain_all+0x69/0x740 mm/swap.c:875 madvise_collapse+0x224/0xaf0 mm/khugepaged.c:2728 madvise_vma_behavior+0x349/0x18e0 mm/madvise.c:1097 madvise_walk_vmas+0x1cf/0x2c0 mm/madvise.c:1271 do_madvise+0x310/0x7a0 mm/madvise.c:1467 __do_sys_madvise mm/madvise.c:1484 [inline] __se_sys_madvise mm/madvise.c:1482 [inline] __x64_sys_madvise+0xa9/0x110 mm/madvise.c:1482 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f01b7979e79 RSP: 002b:00007f01b87fe038 EFLAGS: 00000246 ORIG_RAX: 000000000000001c RAX: ffffffffffffffda RBX: 00007f01b7b15f80 RCX: 00007f01b7979e79 RDX: 0000000000000019 RSI: 0000000000600003 RDI: 0000000020000000 RBP: 00007f01b79e793e R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007f01b7b15f80 R15: 00007ffe3f4fe318 Showing all locks held in the system: 1 lock held by khungtaskd/30: #0: ffffffff8ddb5be0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:326 [inline] #0: ffffffff8ddb5be0 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:838 [inline] #0: ffffffff8ddb5be0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x75/0x340 kernel/locking/lockdep.c:6626 1 lock held by khugepaged/37: #0: ffffffff8ded4bc8 (lock#3){+.+.}-{3:3}, at: __lru_add_drain_all+0x69/0x740 mm/swap.c:875 4 locks held by kworker/1:1/47: 3 locks held by kworker/0:3/1172: #0: ffff888015880948 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x1277/0x1b40 kernel/workqueue.c:3206 #1: ffffc900045b7d80 (deferred_process_work){+.+.}-{0:0}, at: process_one_work+0x921/0x1b40 kernel/workqueue.c:3207 #2: ffffffff8fa23768 (rtnl_mutex){+.+.}-{3:3}, at: switchdev_deferred_process_work+0xe/0x20 net/switchdev/switchdev.c:104 2 locks held by kworker/1:2/1185: 2 locks held by getty/4979: #0: ffff88802af820a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x24/0x80 drivers/tty/tty_ldisc.c:243 #1: ffffc900031232f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0xfc8/0x1490 drivers/tty/n_tty.c:2211 2 locks held by kworker/1:3/5217: 5 locks held by kworker/1:5/5277: 1 lock held by syz.3.155/5714: 5 locks held by kworker/u8:16/6443: #0: ffff8880166e3148 ((wq_completion)netns){+.+.}-{0:0}, at: process_one_work+0x1277/0x1b40 kernel/workqueue.c:3206 #1: ffffc90003d6fd80 (net_cleanup_work){+.+.}-{0:0}, at: process_one_work+0x921/0x1b40 kernel/workqueue.c:3207 #2: ffffffff8fa0dfd0 (pernet_ops_rwsem){++++}-{3:3}, at: cleanup_net+0xbb/0xbb0 net/core/net_namespace.c:594 #3: ffff88802f6d50e8 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:1009 [inline] #3: ffff88802f6d50e8 (&dev->mutex){....}-{3:3}, at: devl_dev_lock net/devlink/devl_internal.h:108 [inline] #3: ffff88802f6d50e8 (&dev->mutex){....}-{3:3}, at: devlink_pernet_pre_exit+0x12d/0x2b0 net/devlink/core.c:506 #4: ffff88802f6d6250 (&devlink->lock_key#4){+.+.}-{3:3}, at: devl_lock net/devlink/core.c:276 [inline] #4: ffff88802f6d6250 (&devlink->lock_key#4){+.+.}-{3:3}, at: devl_dev_lock net/devlink/devl_internal.h:109 [inline] #4: ffff88802f6d6250 (&devlink->lock_key#4){+.+.}-{3:3}, at: devlink_pernet_pre_exit+0x137/0x2b0 net/devlink/core.c:506 3 locks held by kworker/u8:22/6460: 3 locks held by kworker/u8:23/6462: #0: ffff888015889148 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work+0x1277/0x1b40 kernel/workqueue.c:3206 #1: ffffc90003f47d80 ((linkwatch_work).work){+.+.}-{0:0}, at: process_one_work+0x921/0x1b40 kernel/workqueue.c:3207 #2: ffffffff8fa23768 (rtnl_mutex){+.+.}-{3:3}, at: linkwatch_event+0x51/0xc0 net/core/link_watch.c:276 1 lock held by syz.0.906/7654: #0: ffffffff8ded4bc8 (lock#3){+.+.}-{3:3}, at: __lru_add_drain_all+0x69/0x740 mm/swap.c:875 2 locks held by syz.2.907/7656: #0: ffff888021059498 (&mm->mmap_lock){++++}-{3:3}, at: mmap_read_lock include/linux/mmap_lock.h:144 [inline] #0: ffff888021059498 (&mm->mmap_lock){++++}-{3:3}, at: do_madvise+0x44e/0x7a0 mm/madvise.c:1445 #1: ffffffff8ded4bc8 (lock#3){+.+.}-{3:3}, at: __lru_add_drain_all+0x69/0x740 mm/swap.c:875 2 locks held by syz-executor/7662: #0: ffffffff8fa23768 (rtnl_mutex){+.+.}-{3:3}, at: tun_detach drivers/net/tun.c:698 [inline] #0: ffffffff8fa23768 (rtnl_mutex){+.+.}-{3:3}, at: tun_chr_close+0x3e/0x230 drivers/net/tun.c:3510 #1: ffffffff8ddc1378 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock+0x282/0x3b0 kernel/rcu/tree_exp.h:296 2 locks held by syz-executor/7671: #0: ffffffff8fa0dfd0 (pernet_ops_rwsem){++++}-{3:3}, at: copy_net_ns+0x2d6/0x700 net/core/net_namespace.c:504 #1: ffffffff8fa23768 (rtnl_mutex){+.+.}-{3:3}, at: wg_netns_pre_exit+0x1b/0x230 drivers/net/wireguard/device.c:414 2 locks held by syz-executor/7673: #0: ffffffff8fa0dfd0 (pernet_ops_rwsem){++++}-{3:3}, at: copy_net_ns+0x2d6/0x700 net/core/net_namespace.c:504 #1: ffffffff8fa23768 (rtnl_mutex){+.+.}-{3:3}, at: ip_tunnel_init_net+0x218/0x780 net/ipv4/ip_tunnel.c:1158 2 locks held by syz-executor/7677: #0: ffffffff8fa0dfd0 (pernet_ops_rwsem){++++}-{3:3}, at: copy_net_ns+0x2d6/0x700 net/core/net_namespace.c:504 #1: ffffffff8fa23768 (rtnl_mutex){+.+.}-{3:3}, at: setup_net+0x621/0xb40 net/core/net_namespace.c:365 2 locks held by syz-executor/7682: #0: ffffffff8fa0dfd0 (pernet_ops_rwsem){++++}-{3:3}, at: copy_net_ns+0x2d6/0x700 net/core/net_namespace.c:504 #1: ffffffff8fa23768 (rtnl_mutex){+.+.}-{3:3}, at: ip_tunnel_init_net+0x218/0x780 net/ipv4/ip_tunnel.c:1158 3 locks held by syz-executor/7696: #0: ffff88805e968d80 (&hdev->req_lock){+.+.}-{3:3}, at: hci_dev_do_close+0x26/0x90 net/bluetooth/hci_core.c:481 #1: ffff88805e968078 (&hdev->lock){+.+.}-{3:3}, at: hci_dev_close_sync+0x346/0x1110 net/bluetooth/hci_sync.c:5145 #2: ffffffff8fc880e8 (hci_cb_list_lock){+.+.}-{3:3}, at: hci_disconn_cfm include/net/bluetooth/hci_core.h:1977 [inline] #2: ffffffff8fc880e8 (hci_cb_list_lock){+.+.}-{3:3}, at: hci_conn_hash_flush+0xc4/0x260 net/bluetooth/hci_conn.c:2592 3 locks held by syz-executor/7698: #0: ffff888078d1cd80 (&hdev->req_lock){+.+.}-{3:3}, at: hci_dev_do_close+0x26/0x90 net/bluetooth/hci_core.c:481 #1: ffff888078d1c078 (&hdev->lock){+.+.}-{3:3}, at: hci_dev_close_sync+0x346/0x1110 net/bluetooth/hci_sync.c:5145 #2: ffffffff8fc880e8 (hci_cb_list_lock){+.+.}-{3:3}, at: hci_disconn_cfm include/net/bluetooth/hci_core.h:1977 [inline] #2: ffffffff8fc880e8 (hci_cb_list_lock){+.+.}-{3:3}, at: hci_conn_hash_flush+0xc4/0x260 net/bluetooth/hci_conn.c:2592 3 locks held by syz-executor/7701: #0: ffff888055a10d80 (&hdev->req_lock){+.+.}-{3:3}, at: hci_dev_do_close+0x26/0x90 net/bluetooth/hci_core.c:481 #1: ffff888055a10078 (&hdev->lock){+.+.}-{3:3}, at: hci_dev_close_sync+0x346/0x1110 net/bluetooth/hci_sync.c:5145 #2: ffffffff8fc880e8 (hci_cb_list_lock){+.+.}-{3:3}, at: hci_disconn_cfm include/net/bluetooth/hci_core.h:1977 [inline] #2: ffffffff8fc880e8 (hci_cb_list_lock){+.+.}-{3:3}, at: hci_conn_hash_flush+0xc4/0x260 net/bluetooth/hci_conn.c:2592 2 locks held by syz-executor/7706: #0: ffffffff8fa0dfd0 (pernet_ops_rwsem){++++}-{3:3}, at: copy_net_ns+0x2d6/0x700 net/core/net_namespace.c:504 #1: ffffffff8fa23768 (rtnl_mutex){+.+.}-{3:3}, at: register_nexthop_notifier+0x1b/0x70 net/ipv4/nexthop.c:3872 1 lock held by syz-executor/7716: #0: ffffffff8fa23768 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:79 [inline] #0: ffffffff8fa23768 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x372/0xea0 net/core/rtnetlink.c:6644 1 lock held by syz-executor/7723: #0: ffffffff8fa23768 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:79 [inline] #0: ffffffff8fa23768 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x372/0xea0 net/core/rtnetlink.c:6644 1 lock held by syz-executor/7727: #0: ffffffff8fa23768 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:79 [inline] #0: ffffffff8fa23768 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x372/0xea0 net/core/rtnetlink.c:6644 1 lock held by syz-executor/7729: #0: ffffffff8fa23768 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:79 [inline] #0: ffffffff8fa23768 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x372/0xea0 net/core/rtnetlink.c:6644 ============================================= NMI backtrace for cpu 0 CPU: 0 UID: 0 PID: 30 Comm: khungtaskd Not tainted 6.11.0-rc5-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024 Call Trace: __dump_stack lib/dump_stack.c:93 [inline] dump_stack_lvl+0x116/0x1f0 lib/dump_stack.c:119 nmi_cpu_backtrace+0x27b/0x390 lib/nmi_backtrace.c:113 nmi_trigger_cpumask_backtrace+0x29c/0x300 lib/nmi_backtrace.c:62 trigger_all_cpu_backtrace include/linux/nmi.h:162 [inline] check_hung_uninterruptible_tasks kernel/hung_task.c:223 [inline] watchdog+0xf0c/0x1240 kernel/hung_task.c:379 kthread+0x2c1/0x3a0 kernel/kthread.c:389 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 UID: 0 PID: 5277 Comm: kworker/1:5 Not tainted 6.11.0-rc5-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024 Workqueue: events nsim_dev_trap_report_work RIP: 0010:preempt_count arch/x86/include/asm/preempt.h:26 [inline] RIP: 0010:check_kcov_mode kernel/kcov.c:182 [inline] RIP: 0010:__sanitizer_cov_trace_pc+0xc/0x70 kernel/kcov.c:216 Code: c3 cc cc cc cc 66 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 65 48 8b 15 84 61 79 7e <65> 8b 05 85 61 79 7e a9 00 01 ff 00 48 8b 34 24 74 1d f6 c4 01 74 RSP: 0018:ffffc90000a17e80 EFLAGS: 00000083 RAX: 0000000000010103 RBX: ffffc90000a17f08 RCX: ffffffff813ce0ff RDX: ffff88802d10bc00 RSI: ffffffff88e46fab RDI: 0000000000000006 RBP: 0000000000000001 R08: 0000000000000006 R09: ffffffff88e46fab R10: ffffffff8b400000 R11: 0000000000000000 R12: ffffffff88e46fab R13: 0000000000000000 R14: ffffc90000a17fc8 R15: ffffc90000a17f3d FS: 0000000000000000(0000) GS:ffff8880b9300000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b32607ff8 CR3: 000000000db7c000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: orc_find arch/x86/kernel/unwind_orc.c:209 [inline] unwind_next_frame+0x211/0x23a0 arch/x86/kernel/unwind_orc.c:494 arch_stack_walk+0x100/0x170 arch/x86/kernel/stacktrace.c:25 stack_trace_save+0x95/0xd0 kernel/stacktrace.c:122 kasan_save_stack+0x33/0x60 mm/kasan/common.c:47 kasan_save_track+0x14/0x30 mm/kasan/common.c:68 poison_kmalloc_redzone mm/kasan/common.c:370 [inline] __kasan_kmalloc+0xaa/0xb0 mm/kasan/common.c:387 kmalloc_noprof include/linux/slab.h:681 [inline] dummy_urb_enqueue+0x8d/0x8a0 drivers/usb/gadget/udc/dummy_hcd.c:1271 usb_hcd_submit_urb+0x2d1/0x2090 drivers/usb/core/hcd.c:1533 usb_submit_urb+0x87c/0x1730 drivers/usb/core/urb.c:581 ath9k_hif_usb_rx_cb+0xb53/0x16a0 drivers/net/wireless/ath/ath9k/hif_usb.c:723 __usb_hcd_giveback_urb+0x389/0x6e0 drivers/usb/core/hcd.c:1650 usb_hcd_giveback_urb+0x396/0x450 drivers/usb/core/hcd.c:1734 dummy_timer+0x17c3/0x38d0 drivers/usb/gadget/udc/dummy_hcd.c:1987 __run_hrtimer kernel/time/hrtimer.c:1689 [inline] __hrtimer_run_queues+0x20c/0xcc0 kernel/time/hrtimer.c:1753 hrtimer_interrupt+0x31b/0x800 kernel/time/hrtimer.c:1815 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1032 [inline] __sysvec_apic_timer_interrupt+0x10f/0x450 arch/x86/kernel/apic/apic.c:1049 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1043 [inline] sysvec_apic_timer_interrupt+0x43/0xb0 arch/x86/kernel/apic/apic.c:1043 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702 RIP: 0010:__sanitizer_cov_trace_pc+0x0/0x70 kernel/kcov.c:209 Code: be b0 01 00 00 e8 a0 ff ff ff 31 c0 c3 cc cc cc cc 66 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 0f 1e fa 65 48 8b 15 84 61 79 7e 65 8b 05 85 61 79 7e a9 00 01 RSP: 0018:ffffc90000a18b78 EFLAGS: 00000246 RAX: 0000000000000000 RBX: ffff88805b550530 RCX: ffffffff891fb0c2 RDX: ffff88802d10bc00 RSI: 0000000000000000 RDI: 0000000000000007 RBP: ffff88805de76300 R08: 0000000000000007 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 R13: 0000000000000000 R14: dffffc0000000000 R15: ffffed100bbcec5a pie_calculate_probability+0xf8/0x850 net/sched/sch_pie.c:326 fq_pie_timer+0x215/0x5a0 net/sched/sch_fq_pie.c:398 call_timer_fn+0x1a0/0x610 kernel/time/timer.c:1792 expire_timers kernel/time/timer.c:1843 [inline] __run_timers+0x74b/0xaf0 kernel/time/timer.c:2417 __run_timer_base kernel/time/timer.c:2428 [inline] __run_timer_base kernel/time/timer.c:2421 [inline] run_timer_base+0x111/0x190 kernel/time/timer.c:2437 run_timer_softirq+0x1a/0x40 kernel/time/timer.c:2447 handle_softirqs+0x216/0x8f0 kernel/softirq.c:554 __do_softirq kernel/softirq.c:588 [inline] invoke_softirq kernel/softirq.c:428 [inline] __irq_exit_rcu kernel/softirq.c:637 [inline] irq_exit_rcu+0xbb/0x120 kernel/softirq.c:649 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1043 [inline] sysvec_apic_timer_interrupt+0x95/0xb0 arch/x86/kernel/apic/apic.c:1043 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702 RIP: 0010:arch_stack_walk+0xd3/0x170 arch/x86/kernel/stacktrace.c:27 Code: 68 ff ff ff e8 8e ed 08 00 eb 4c e8 47 64 56 00 4c 89 e7 e8 ff c2 08 00 31 ff 48 89 c3 48 89 c6 e8 a2 66 56 00 48 85 db 74 40 28 64 56 00 48 89 de 4c 89 f7 41 ff d5 0f 1f 00 31 ff 89 c3 89 RSP: 0018:ffffc900031af748 EFLAGS: 00000286 RAX: 0000000000000000 RBX: ffffffff81761855 RCX: ffffffff8134153e RDX: ffff88802d10bc00 RSI: 0000000000000000 RDI: 0000000000000007 RBP: ffffc900031af7e0 R08: 0000000000000007 R09: 0000000000000000 R10: ffffffff81761855 R11: 0000000000000000 R12: ffffc900031af750 R13: ffffffff817615a0 R14: ffffc900031af810 R15: ffff88802d10bc00 stack_trace_save+0x95/0xd0 kernel/stacktrace.c:122 kasan_save_stack+0x33/0x60 mm/kasan/common.c:47 kasan_save_track+0x14/0x30 mm/kasan/common.c:68 kasan_save_free_info+0x3b/0x60 mm/kasan/generic.c:579 poison_slab_object+0xf7/0x160 mm/kasan/common.c:240 __kasan_slab_free+0x32/0x50 mm/kasan/common.c:256 kasan_slab_free include/linux/kasan.h:184 [inline] slab_free_hook mm/slub.c:2252 [inline] slab_free mm/slub.c:4473 [inline] kfree+0x12a/0x3b0 mm/slub.c:4594 skb_kfree_head net/core/skbuff.c:1084 [inline] skb_free_head+0x108/0x1d0 net/core/skbuff.c:1096 skb_release_data+0x75c/0x980 net/core/skbuff.c:1123 skb_release_all net/core/skbuff.c:1188 [inline] __kfree_skb net/core/skbuff.c:1202 [inline] consume_skb net/core/skbuff.c:1426 [inline] consume_skb+0xd0/0x160 net/core/skbuff.c:1420 nsim_dev_trap_report drivers/net/netdevsim/dev.c:821 [inline] nsim_dev_trap_report_work+0x878/0xc80 drivers/net/netdevsim/dev.c:850 process_one_work+0x9c5/0x1b40 kernel/workqueue.c:3231 process_scheduled_works kernel/workqueue.c:3312 [inline] worker_thread+0x6c8/0xed0 kernel/workqueue.c:3389 kthread+0x2c1/0x3a0 kernel/kthread.c:389 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244