[ OK ] Reached target Multi-User System. [ OK ] Reached target Graphical Interface. Starting Update UTMP about System Runlevel Changes... [ OK ] Started Update UTMP about System Runlevel Changes. Starting Load/Save RF Kill Switch Status... Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.1.62' (ECDSA) to the list of known hosts. 2021/07/10 00:45:38 fuzzer started 2021/07/10 00:45:38 connecting to host at 10.128.0.169:34107 2021/07/10 00:45:38 checking machine... 2021/07/10 00:45:38 checking revisions... 2021/07/10 00:45:38 testing simple program... syzkaller login: [ 76.258609][ T8482] chnl_net:caif_netlink_parms(): no params data found [ 76.314753][ T8482] bridge0: port 1(bridge_slave_0) entered blocking state [ 76.324441][ T8482] bridge0: port 1(bridge_slave_0) entered disabled state [ 76.333311][ T8482] device bridge_slave_0 entered promiscuous mode [ 76.342736][ T8482] bridge0: port 2(bridge_slave_1) entered blocking state [ 76.352279][ T8482] bridge0: port 2(bridge_slave_1) entered disabled state [ 76.361119][ T8482] device bridge_slave_1 entered promiscuous mode [ 76.383904][ T8482] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 76.396956][ T8482] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 76.421944][ T8482] team0: Port device team_slave_0 added [ 76.430093][ T8482] team0: Port device team_slave_1 added [ 76.449672][ T8482] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 76.457846][ T8482] batman_adv: batadv0: The MTU of interface batadv_slave_0 is too small (1500) to handle the transport of batman-adv packets. Packets going over this interface will be fragmented on layer2 which could impact the performance. Setting the MTU to 1560 would solve the problem. [ 76.487212][ T8482] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 76.500453][ T8482] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 76.509047][ T8482] batman_adv: batadv0: The MTU of interface batadv_slave_1 is too small (1500) to handle the transport of batman-adv packets. Packets going over this interface will be fragmented on layer2 which could impact the performance. Setting the MTU to 1560 would solve the problem. [ 76.536621][ T8482] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 76.564310][ T8482] device hsr_slave_0 entered promiscuous mode [ 76.572004][ T8482] device hsr_slave_1 entered promiscuous mode [ 76.679722][ T8482] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 76.692016][ T8482] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 76.702169][ T8482] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 76.714178][ T8482] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 76.741343][ T8482] bridge0: port 2(bridge_slave_1) entered blocking state [ 76.748918][ T8482] bridge0: port 2(bridge_slave_1) entered forwarding state [ 76.757285][ T8482] bridge0: port 1(bridge_slave_0) entered blocking state [ 76.764385][ T8482] bridge0: port 1(bridge_slave_0) entered forwarding state [ 76.809980][ T8482] 8021q: adding VLAN 0 to HW filter on device bond0 [ 76.824913][ T4933] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 76.839967][ T4933] bridge0: port 1(bridge_slave_0) entered disabled state [ 76.848607][ T4933] bridge0: port 2(bridge_slave_1) entered disabled state [ 76.859807][ T4933] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 76.874708][ T8482] 8021q: adding VLAN 0 to HW filter on device team0 [ 76.897215][ T4933] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 76.906127][ T4933] bridge0: port 1(bridge_slave_0) entered blocking state [ 76.913542][ T4933] bridge0: port 1(bridge_slave_0) entered forwarding state [ 76.922150][ T4933] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 76.931041][ T4933] bridge0: port 2(bridge_slave_1) entered blocking state [ 76.938186][ T4933] bridge0: port 2(bridge_slave_1) entered forwarding state [ 76.958275][ T8701] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 76.969153][ T8701] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 76.981600][ T20] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 76.995820][ T8701] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 77.009581][ T8482] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 77.022991][ T8482] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 77.033847][ T8701] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 77.057632][ T8482] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 77.066785][ T4933] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 77.076744][ T4933] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 77.096501][ T4933] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 77.118342][ T4933] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 77.127763][ T4933] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 77.136754][ T4933] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 77.148372][ T8482] device veth0_vlan entered promiscuous mode [ 77.163481][ T8482] device veth1_vlan entered promiscuous mode [ 77.189849][ T4933] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 77.200381][ T4933] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 77.210133][ T4933] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 77.228319][ T8482] device veth0_macvtap entered promiscuous mode [ 77.240528][ T8482] device veth1_macvtap entered promiscuous mode [ 77.261380][ T8482] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 77.270254][ T20] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 77.280853][ T20] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 77.294418][ T8482] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 77.302977][ T20] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 77.313308][ T20] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 77.329835][ T8482] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 77.339408][ T8482] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 77.348930][ T8482] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 77.358568][ T8482] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 77.459562][ T263] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 77.469817][ T263] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 77.498468][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready executing program [ 77.514298][ T263] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 77.525685][ T263] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 77.539785][ T8] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready 2021/07/10 00:45:41 building call list... [ 78.401119][ T275] netdevsim netdevsim0 netdevsim3 (unregistering): unset [1, 0] type 2 family 0 port 6081 - 0 [ 79.877189][ T8475] [ 79.879901][ T8475] ====================================================== [ 79.887423][ T8475] WARNING: possible circular locking dependency detected [ 79.894603][ T8475] 5.13.0-syzkaller #0 Not tainted [ 79.900538][ T8475] ------------------------------------------------------ [ 79.910712][ T8475] syz-fuzzer/8475 is trying to acquire lock: [ 79.917998][ T8475] ffffffff8ba9c180 (fs_reclaim){+.+.}-{0:0}, at: fs_reclaim_acquire+0xf7/0x160 [ 79.927854][ T8475] [ 79.927854][ T8475] but task is already holding lock: [ 79.935673][ T8475] ffff8880b9d4d620 (lock#2){-.-.}-{2:2}, at: __alloc_pages_bulk+0x4ad/0x1870 [ 79.945553][ T8475] [ 79.945553][ T8475] which lock already depends on the new lock. [ 79.945553][ T8475] [ 79.956522][ T8475] [ 79.956522][ T8475] the existing dependency chain (in reverse order) is: [ 79.965526][ T8475] [ 79.965526][ T8475] -> #1 (lock#2){-.-.}-{2:2}: [ 79.972955][ T8475] free_unref_page+0x1bf/0x690 [ 79.978533][ T8475] __mmdrop+0xcb/0x3f0 [ 79.983353][ T8475] finish_task_switch.isra.0+0x6da/0xa50 [ 79.989696][ T8475] __schedule+0x93c/0x2710 [ 79.994766][ T8475] preempt_schedule_irq+0x4e/0x90 [ 80.000604][ T8475] irqentry_exit+0x31/0x80 [ 80.006902][ T8475] asm_sysvec_apic_timer_interrupt+0x12/0x20 [ 80.013866][ T8475] lock_acquire+0x1ef/0x510 [ 80.018972][ T8475] fs_reclaim_acquire+0x117/0x160 [ 80.024808][ T8475] kmem_cache_alloc+0x3e/0x4a0 [ 80.030290][ T8475] getname_flags.part.0+0x50/0x4f0 [ 80.036145][ T8475] user_path_at_empty+0xa1/0x100 [ 80.041904][ T8475] vfs_statx+0x142/0x390 [ 80.046854][ T8475] __do_sys_newlstat+0x91/0x110 [ 80.052805][ T8475] do_syscall_64+0x35/0xb0 [ 80.058602][ T8475] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 80.065202][ T8475] [ 80.065202][ T8475] -> #0 (fs_reclaim){+.+.}-{0:0}: [ 80.073584][ T8475] __lock_acquire+0x2a07/0x54a0 [ 80.079957][ T8475] lock_acquire+0x1ab/0x510 [ 80.085087][ T8475] fs_reclaim_acquire+0x117/0x160 [ 80.090990][ T8475] prepare_alloc_pages+0x15c/0x580 [ 80.097175][ T8475] __alloc_pages+0x12f/0x500 [ 80.103172][ T8475] alloc_pages+0x18c/0x2a0 [ 80.108446][ T8475] stack_depot_save+0x39d/0x4e0 [ 80.114013][ T8475] save_stack+0x15e/0x1e0 [ 80.118967][ T8475] __set_page_owner+0x50/0x290 [ 80.124254][ T8475] __alloc_pages_bulk+0x8b9/0x1870 [ 80.130092][ T8475] __vmalloc_node_range+0x39d/0x960 [ 80.136161][ T8475] __vmalloc+0x69/0x80 [ 80.140879][ T8475] snd_dma_alloc_pages+0x433/0x590 [ 80.146855][ T8475] do_alloc_pages+0x9b/0x160 [ 80.152156][ T8475] snd_pcm_lib_malloc_pages+0x3f6/0x880 [ 80.158876][ T8475] snd_pcm_hw_params+0x1408/0x1990 [ 80.164931][ T8475] snd_pcm_kernel_ioctl+0xd1/0x240 [ 80.170659][ T8475] snd_pcm_oss_change_params_locked+0x1958/0x3990 [ 80.177998][ T8475] snd_pcm_oss_make_ready+0xe7/0x1b0 [ 80.183910][ T8475] snd_pcm_oss_sync+0x1de/0x800 [ 80.189422][ T8475] snd_pcm_oss_release+0x276/0x300 [ 80.195696][ T8475] __fput+0x288/0x920 [ 80.200708][ T8475] task_work_run+0xdd/0x1a0 [ 80.207702][ T8475] exit_to_user_mode_prepare+0x27e/0x290 [ 80.214156][ T8475] syscall_exit_to_user_mode+0x19/0x60 [ 80.220594][ T8475] do_syscall_64+0x42/0xb0 [ 80.225558][ T8475] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 80.232186][ T8475] [ 80.232186][ T8475] other info that might help us debug this: [ 80.232186][ T8475] [ 80.242502][ T8475] Possible unsafe locking scenario: [ 80.242502][ T8475] [ 80.249956][ T8475] CPU0 CPU1 [ 80.255580][ T8475] ---- ---- [ 80.260933][ T8475] lock(lock#2); [ 80.264753][ T8475] lock(fs_reclaim); [ 80.271551][ T8475] lock(lock#2); [ 80.277701][ T8475] lock(fs_reclaim); [ 80.281862][ T8475] [ 80.281862][ T8475] *** DEADLOCK *** [ 80.281862][ T8475] [ 80.290472][ T8475] 2 locks held by syz-fuzzer/8475: [ 80.295874][ T8475] #0: ffff888020c63440 (&runtime->oss.params_lock){+.+.}-{3:3}, at: snd_pcm_oss_make_ready+0xc7/0x1b0 [ 80.307423][ T8475] #1: ffff8880b9d4d620 (lock#2){-.-.}-{2:2}, at: __alloc_pages_bulk+0x4ad/0x1870 [ 80.317272][ T8475] [ 80.317272][ T8475] stack backtrace: [ 80.323338][ T8475] CPU: 1 PID: 8475 Comm: syz-fuzzer Not tainted 5.13.0-syzkaller #0 [ 80.331326][ T8475] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 80.341531][ T8475] Call Trace: [ 80.344903][ T8475] dump_stack_lvl+0xcd/0x134 [ 80.349506][ T8475] check_noncircular+0x25f/0x2e0 [ 80.354962][ T8475] ? print_circular_bug+0x1e0/0x1e0 [ 80.360886][ T8475] ? __kernel_text_address+0x9/0x30 [ 80.366077][ T8475] ? unwind_get_return_address+0x51/0x90 [ 80.372200][ T8475] ? lockdep_lock+0xc6/0x200 [ 80.376996][ T8475] ? call_rcu_zapped+0xb0/0xb0 [ 80.381858][ T8475] __lock_acquire+0x2a07/0x54a0 [ 80.386828][ T8475] ? lockdep_hardirqs_on_prepare+0x400/0x400 [ 80.392981][ T8475] lock_acquire+0x1ab/0x510 [ 80.397779][ T8475] ? fs_reclaim_acquire+0xf7/0x160 [ 80.403871][ T8475] ? lock_release+0x720/0x720 [ 80.408555][ T8475] ? lock_chain_count+0x20/0x20 [ 80.413497][ T8475] ? mark_lock+0xef/0x17b0 [ 80.418196][ T8475] ? deref_stack_reg+0xee/0x150 [ 80.423260][ T8475] fs_reclaim_acquire+0x117/0x160 [ 80.428529][ T8475] ? fs_reclaim_acquire+0xf7/0x160 [ 80.433903][ T8475] prepare_alloc_pages+0x15c/0x580 [ 80.439452][ T8475] ? exit_to_user_mode_prepare+0x27e/0x290 [ 80.445258][ T8475] __alloc_pages+0x12f/0x500 [ 80.449932][ T8475] ? __alloc_pages_slowpath.constprop.0+0x21b0/0x21b0 [ 80.457124][ T8475] ? __unwind_start+0x51b/0x800 [ 80.462412][ T8475] ? __kernel_text_address+0x9/0x30 [ 80.467776][ T8475] alloc_pages+0x18c/0x2a0 [ 80.472804][ T8475] stack_depot_save+0x39d/0x4e0 [ 80.477667][ T8475] save_stack+0x15e/0x1e0 [ 80.482073][ T8475] ? register_early_stack+0xb0/0xb0 [ 80.488053][ T8475] ? __alloc_pages_bulk+0x8b9/0x1870 [ 80.493544][ T8475] ? __vmalloc_node_range+0x39d/0x960 [ 80.499241][ T8475] ? __vmalloc+0x69/0x80 [ 80.504261][ T8475] ? snd_dma_alloc_pages+0x433/0x590 [ 80.510474][ T8475] ? do_alloc_pages+0x9b/0x160 [ 80.515255][ T8475] ? snd_pcm_lib_malloc_pages+0x3f6/0x880 [ 80.521143][ T8475] ? snd_pcm_hw_params+0x1408/0x1990 executing program [ 80.526513][ T8475] ? snd_pcm_kernel_ioctl+0xd1/0x240 [ 80.531975][ T8475] ? snd_pcm_oss_change_params_locked+0x1958/0x3990 [ 80.538916][ T8475] ? snd_pcm_oss_make_ready+0xe7/0x1b0 [ 80.544392][ T8475] ? snd_pcm_oss_sync+0x1de/0x800 [ 80.549963][ T8475] ? snd_pcm_oss_release+0x276/0x300 [ 80.555539][ T8475] ? __fput+0x288/0x920 [ 80.559778][ T8475] ? task_work_run+0xdd/0x1a0 [ 80.564468][ T8475] ? exit_to_user_mode_prepare+0x27e/0x290 [ 80.570348][ T8475] ? syscall_exit_to_user_mode+0x19/0x60 [ 80.576143][ T8475] ? preempt_count_add+0x74/0x140 [ 80.581446][ T8475] __set_page_owner+0x50/0x290 [ 80.586966][ T8475] ? post_alloc_hook+0x145/0x1e0 [ 80.591985][ T8475] __alloc_pages_bulk+0x8b9/0x1870 [ 80.597131][ T8475] ? __alloc_pages+0x500/0x500 [ 80.602410][ T8475] ? rcu_read_lock_sched_held+0x3a/0x70 [ 80.608234][ T8475] ? trace_kmalloc_node+0xbe/0xf0 [ 80.613339][ T8475] __vmalloc_node_range+0x39d/0x960 [ 80.618960][ T8475] ? vfree_atomic+0xe0/0xe0 [ 80.623770][ T8475] ? snd_dma_alloc_pages+0x433/0x590 [ 80.629053][ T8475] __vmalloc+0x69/0x80 [ 80.633123][ T8475] ? snd_dma_alloc_pages+0x433/0x590 [ 80.638410][ T8475] snd_dma_alloc_pages+0x433/0x590 [ 80.643524][ T8475] do_alloc_pages+0x9b/0x160 [ 80.648743][ T8475] snd_pcm_lib_malloc_pages+0x3f6/0x880 [ 80.654386][ T8475] ? snd_pcm_hw_params+0x828/0x1990 [ 80.659922][ T8475] snd_pcm_hw_params+0x1408/0x1990 [ 80.665125][ T8475] ? snd_pcm_playback_open+0x130/0x130 [ 80.670915][ T8475] ? snd_pcm_hw_param_near.constprop.0+0x6ca/0x8f0 [ 80.677491][ T8475] ? snd_pcm_oss_disconnect_minor+0x370/0x370 [ 80.683804][ T8475] snd_pcm_kernel_ioctl+0xd1/0x240 [ 80.689388][ T8475] snd_pcm_oss_change_params_locked+0x1958/0x3990 [ 80.695837][ T8475] ? snd_pcm_plugin_append+0x190/0x190 [ 80.703653][ T8475] ? snd_pcm_oss_make_ready+0xc7/0x1b0 [ 80.710258][ T8475] ? locks_remove_posix+0x33b/0x5e0 [ 80.715719][ T8475] ? lockdep_hardirqs_on_prepare+0x400/0x400 [ 80.722479][ T8475] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 80.728894][ T8475] ? __fsnotify_parent+0x488/0x9d0 [ 80.734254][ T8475] snd_pcm_oss_make_ready+0xe7/0x1b0 [ 80.739812][ T8475] snd_pcm_oss_sync+0x1de/0x800 [ 80.744859][ T8475] snd_pcm_oss_release+0x276/0x300 [ 80.749988][ T8475] __fput+0x288/0x920 [ 80.753968][ T8475] ? snd_pcm_oss_sync+0x800/0x800 [ 80.759073][ T8475] task_work_run+0xdd/0x1a0 [ 80.763588][ T8475] exit_to_user_mode_prepare+0x27e/0x290 [ 80.769498][ T8475] syscall_exit_to_user_mode+0x19/0x60 [ 80.775273][ T8475] do_syscall_64+0x42/0xb0 [ 80.780137][ T8475] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 80.786035][ T8475] RIP: 0033:0x4af19b [ 80.790129][ T8475] Code: fb ff eb bd e8 a6 b6 fb ff e9 61 ff ff ff cc e8 9b 82 fb ff 48 8b 7c 24 10 48 8b 74 24 18 48 8b 54 24 20 48 8b 44 24 08 0f 05 <48> 3d 01 f0 ff ff 76 20 48 c7 44 24 28 ff ff ff ff 48 c7 44 24 30 [ 80.810726][ T8475] RSP: 002b:000000c000337430 EFLAGS: 00000206 ORIG_RAX: 0000000000000003 [ 80.819206][ T8475] RAX: 0000000000000000 RBX: 000000c00001e800 RCX: 00000000004af19b [ 80.827259][ T8475] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000006 [ 80.835782][ T8475] RBP: 000000c000337470 R08: 0000000000000001 R09: 0000000000000000 [ 80.844526][ T8475] R10: 0000000000000000 R11: 0000000000000206 R12: 000000000000013e [ 80.852496][ T8475] R13: 000000000000013d R14: 0000000000000200 R15: 000000c0005a5400 [ 80.860571][ T8475] BUG: sleeping function called from invalid context at mm/page_alloc.c:5179 [ 80.870036][ T8475] in_atomic(): 0, irqs_disabled(): 1, non_block: 0, pid: 8475, name: syz-fuzzer [ 80.879536][ T8475] INFO: lockdep is turned off. [ 80.884543][ T8475] irq event stamp: 79968 [ 80.888777][ T8475] hardirqs last enabled at (79967): [] _raw_spin_unlock_irqrestore+0x50/0x70 [ 80.900515][ T8475] hardirqs last disabled at (79968): [] __alloc_pages_bulk+0x1017/0x1870 [ 80.910788][ T8475] softirqs last enabled at (79512): [] __irq_exit_rcu+0x16e/0x1c0 [ 80.920593][ T8475] softirqs last disabled at (79507): [] __irq_exit_rcu+0x16e/0x1c0 [ 80.930141][ T8475] CPU: 1 PID: 8475 Comm: syz-fuzzer Not tainted 5.13.0-syzkaller #0 [ 80.938290][ T8475] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 80.948894][ T8475] Call Trace: [ 80.952439][ T8475] dump_stack_lvl+0xcd/0x134 [ 80.957174][ T8475] ___might_sleep.cold+0x1f1/0x237 [ 80.962297][ T8475] prepare_alloc_pages+0x3da/0x580 [ 80.968088][ T8475] ? exit_to_user_mode_prepare+0x27e/0x290 [ 80.974043][ T8475] __alloc_pages+0x12f/0x500 [ 80.978812][ T8475] ? __alloc_pages_slowpath.constprop.0+0x21b0/0x21b0 [ 80.985672][ T8475] ? __unwind_start+0x51b/0x800 [ 80.990523][ T8475] ? __kernel_text_address+0x9/0x30 [ 80.996181][ T8475] alloc_pages+0x18c/0x2a0 [ 81.001003][ T8475] stack_depot_save+0x39d/0x4e0 [ 81.006248][ T8475] save_stack+0x15e/0x1e0 [ 81.010675][ T8475] ? register_early_stack+0xb0/0xb0 [ 81.016380][ T8475] ? __alloc_pages_bulk+0x8b9/0x1870 [ 81.021767][ T8475] ? __vmalloc_node_range+0x39d/0x960 [ 81.027319][ T8475] ? __vmalloc+0x69/0x80 [ 81.031718][ T8475] ? snd_dma_alloc_pages+0x433/0x590 [ 81.037743][ T8475] ? do_alloc_pages+0x9b/0x160 [ 81.042618][ T8475] ? snd_pcm_lib_malloc_pages+0x3f6/0x880 [ 81.048409][ T8475] ? snd_pcm_hw_params+0x1408/0x1990 [ 81.054245][ T8475] ? snd_pcm_kernel_ioctl+0xd1/0x240 [ 81.059930][ T8475] ? snd_pcm_oss_change_params_locked+0x1958/0x3990 [ 81.066730][ T8475] ? snd_pcm_oss_make_ready+0xe7/0x1b0 [ 81.072471][ T8475] ? snd_pcm_oss_sync+0x1de/0x800 [ 81.077528][ T8475] ? snd_pcm_oss_release+0x276/0x300 [ 81.082903][ T8475] ? __fput+0x288/0x920 [ 81.087060][ T8475] ? task_work_run+0xdd/0x1a0 [ 81.091829][ T8475] ? exit_to_user_mode_prepare+0x27e/0x290 [ 81.098261][ T8475] ? syscall_exit_to_user_mode+0x19/0x60 [ 81.104324][ T8475] ? preempt_count_add+0x74/0x140 [ 81.109449][ T8475] __set_page_owner+0x50/0x290 [ 81.114442][ T8475] ? post_alloc_hook+0x145/0x1e0 [ 81.119477][ T8475] __alloc_pages_bulk+0x8b9/0x1870 [ 81.124968][ T8475] ? __alloc_pages+0x500/0x500 [ 81.129938][ T8475] ? rcu_read_lock_sched_held+0x3a/0x70 [ 81.135689][ T8475] ? trace_kmalloc_node+0xbe/0xf0 [ 81.141327][ T8475] __vmalloc_node_range+0x39d/0x960 [ 81.146597][ T8475] ? vfree_atomic+0xe0/0xe0 [ 81.151474][ T8475] ? snd_dma_alloc_pages+0x433/0x590 [ 81.157127][ T8475] __vmalloc+0x69/0x80 [ 81.161338][ T8475] ? snd_dma_alloc_pages+0x433/0x590 [ 81.166756][ T8475] snd_dma_alloc_pages+0x433/0x590 [ 81.172043][ T8475] do_alloc_pages+0x9b/0x160 [ 81.176753][ T8475] snd_pcm_lib_malloc_pages+0x3f6/0x880 [ 81.182738][ T8475] ? snd_pcm_hw_params+0x828/0x1990 [ 81.188314][ T8475] snd_pcm_hw_params+0x1408/0x1990 [ 81.193557][ T8475] ? snd_pcm_playback_open+0x130/0x130 [ 81.199723][ T8475] ? snd_pcm_hw_param_near.constprop.0+0x6ca/0x8f0 [ 81.206762][ T8475] ? snd_pcm_oss_disconnect_minor+0x370/0x370 [ 81.213179][ T8475] snd_pcm_kernel_ioctl+0xd1/0x240 [ 81.218438][ T8475] snd_pcm_oss_change_params_locked+0x1958/0x3990 [ 81.225019][ T8475] ? snd_pcm_plugin_append+0x190/0x190 [ 81.230596][ T8475] ? snd_pcm_oss_make_ready+0xc7/0x1b0 [ 81.236338][ T8475] ? locks_remove_posix+0x33b/0x5e0 [ 81.241654][ T8475] ? lockdep_hardirqs_on_prepare+0x400/0x400 [ 81.247641][ T8475] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 81.254227][ T8475] ? __fsnotify_parent+0x488/0x9d0 [ 81.259330][ T8475] snd_pcm_oss_make_ready+0xe7/0x1b0 [ 81.264659][ T8475] snd_pcm_oss_sync+0x1de/0x800 [ 81.270094][ T8475] snd_pcm_oss_release+0x276/0x300 [ 81.275589][ T8475] __fput+0x288/0x920 [ 81.279577][ T8475] ? snd_pcm_oss_sync+0x800/0x800 [ 81.285212][ T8475] task_work_run+0xdd/0x1a0 [ 81.289956][ T8475] exit_to_user_mode_prepare+0x27e/0x290 [ 81.296484][ T8475] syscall_exit_to_user_mode+0x19/0x60 [ 81.303140][ T8475] do_syscall_64+0x42/0xb0 [ 81.307582][ T8475] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 81.314145][ T8475] RIP: 0033:0x4af19b [ 81.318233][ T8475] Code: fb ff eb bd e8 a6 b6 fb ff e9 61 ff ff ff cc e8 9b 82 fb ff 48 8b 7c 24 10 48 8b 74 24 18 48 8b 54 24 20 48 8b 44 24 08 0f 05 <48> 3d 01 f0 ff ff 76 20 48 c7 44 24 28 ff ff ff ff 48 c7 44 24 30 [ 81.338203][ T8475] RSP: 002b:000000c000337430 EFLAGS: 00000206 ORIG_RAX: 0000000000000003 [ 81.347764][ T8475] RAX: 0000000000000000 RBX: 000000c00001e800 RCX: 00000000004af19b [ 81.356434][ T8475] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000006 [ 81.364864][ T8475] RBP: 000000c000337470 R08: 0000000000000001 R09: 0000000000000000 [ 81.373343][ T8475] R10: 0000000000000000 R11: 0000000000000206 R12: 000000000000013e [ 81.381653][ T8475] R13: 000000000000013d R14: 0000000000000200 R15: 000000c0005a5400 [ 81.496453][ T8475] can: request_module (can-proto-0) failed. [ 81.510325][ T8475] can: request_module (can-proto-0) failed. [ 81.522497][ T8475] can: request_module (can-proto-0) failed. [ 81.698548][ T8475] base_sock_release(ffff8880392a64c0) sk=ffff88801863c000