syzkaller syzkaller login: [ 14.358008][ T24] kauditd_printk_skb: 48 callbacks suppressed [ 14.358018][ T24] audit: type=1400 audit(1786343863.260:59): avc: denied { transition } for pid=217 comm="sshd-session" path="/bin/sh" dev="sda1" ino=90 scontext=system_u:system_r:sshd_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1 [ 14.362442][ T24] audit: type=1400 audit(1786343863.260:60): avc: denied { noatsecure } for pid=217 comm="sshd-session" scontext=system_u:system_r:sshd_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1 [ 14.365867][ T24] audit: type=1400 audit(1786343863.260:61): avc: denied { write } for pid=217 comm="sh" path="pipe:[13945]" dev="pipefs" ino=13945 scontext=root:sysadm_r:sysadm_t tcontext=system_u:system_r:sshd_t tclass=fifo_file permissive=1 [ 14.369596][ T24] audit: type=1400 audit(1786343863.260:62): avc: denied { rlimitinh } for pid=217 comm="sh" scontext=system_u:system_r:sshd_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1 [ 14.372831][ T24] audit: type=1400 audit(1786343863.260:63): avc: denied { siginh } for pid=217 comm="sh" scontext=system_u:system_r:sshd_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1 Warning: Permanently added '10.128.1.21' (ED25519) to the list of known hosts. 2026/08/10 06:37:52 parsed 1 programs 2026/08/10 06:37:52 serving rpc on tcp://46293 [ 23.477387][ T24] audit: type=1400 audit(1786343872.380:64): avc: denied { node_bind } for pid=287 comm="syz-execprog" saddr=::1 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:node_t tclass=tcp_socket permissive=1 [ 23.498214][ T24] audit: type=1400 audit(1786343872.380:65): avc: denied { create } for pid=287 comm="syz-execprog" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=rawip_socket permissive=1 [ 23.518114][ T24] audit: type=1400 audit(1786343872.380:66): avc: denied { module_request } for pid=287 comm="syz-execprog" kmod="net-pf-2-proto-262-type-1" scontext=root:sysadm_r:sysadm_t tcontext=system_u:system_r:kernel_t tclass=system permissive=1 [ 24.093569][ T24] audit: type=1400 audit(1786343872.990:67): avc: denied { mounton } for pid=293 comm="syz-executor" path="/syzcgroup/unified" dev="sda1" ino=2024 scontext=root:sysadm_r:sysadm_t tcontext=root:object_r:root_t tclass=dir permissive=1 [ 24.094622][ T293] cgroup: Unknown subsys name 'net' [ 24.116341][ T24] audit: type=1400 audit(1786343872.990:68): avc: denied { mount } for pid=293 comm="syz-executor" name="/" dev="cgroup2" ino=1 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:cgroup_t tclass=filesystem permissive=1 [ 24.143586][ T24] audit: type=1400 audit(1786343873.020:69): avc: denied { unmount } for pid=293 comm="syz-executor" scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:cgroup_t tclass=filesystem permissive=1 [ 24.143754][ T293] cgroup: Unknown subsys name 'devices' [ 24.257115][ T293] cgroup: Unknown subsys name 'hugetlb' [ 24.262709][ T293] cgroup: Unknown subsys name 'rlimit' [ 24.376134][ T24] audit: type=1400 audit(1786343873.280:70): avc: denied { setattr } for pid=293 comm="syz-executor" name="raw-gadget" dev="devtmpfs" ino=253 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:device_t tclass=chr_file permissive=1 [ 24.400429][ T24] audit: type=1400 audit(1786343873.280:71): avc: denied { create } for pid=293 comm="syz-executor" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=netlink_generic_socket permissive=1 [ 24.420810][ T24] audit: type=1400 audit(1786343873.280:72): avc: denied { write } for pid=293 comm="syz-executor" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=netlink_generic_socket permissive=1 [ 24.441130][ T24] audit: type=1400 audit(1786343873.280:73): avc: denied { read } for pid=293 comm="syz-executor" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=netlink_generic_socket permissive=1 [ 24.603592][ T297] SELinux: Context root:object_r:swapfile_t is not valid (left unmapped). Setting up swapspace version 1, size = 127995904 bytes [ 24.677927][ T293] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k [ 25.014620][ T299] request_module fs-gadgetfs succeeded, but still no fs? [ 25.025038][ T299] cgroup: cgroup: disabling cgroup2 socket matching due to net_prio or net_cls activation [ 25.267255][ T323] bridge0: port 1(bridge_slave_0) entered blocking state [ 25.274322][ T323] bridge0: port 1(bridge_slave_0) entered disabled state [ 25.281735][ T323] device bridge_slave_0 entered promiscuous mode [ 25.288712][ T323] bridge0: port 2(bridge_slave_1) entered blocking state [ 25.295808][ T323] bridge0: port 2(bridge_slave_1) entered disabled state [ 25.303044][ T323] device bridge_slave_1 entered promiscuous mode [ 25.334708][ T323] bridge0: port 2(bridge_slave_1) entered blocking state [ 25.341804][ T323] bridge0: port 2(bridge_slave_1) entered forwarding state [ 25.349087][ T323] bridge0: port 1(bridge_slave_0) entered blocking state [ 25.356127][ T323] bridge0: port 1(bridge_slave_0) entered forwarding state [ 25.372547][ T7] bridge0: port 1(bridge_slave_0) entered disabled state [ 25.380014][ T7] bridge0: port 2(bridge_slave_1) entered disabled state [ 25.387574][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 25.394924][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 25.404157][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 25.412574][ T7] bridge0: port 1(bridge_slave_0) entered blocking state [ 25.419614][ T7] bridge0: port 1(bridge_slave_0) entered forwarding state [ 25.428154][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 25.436358][ T7] bridge0: port 2(bridge_slave_1) entered blocking state [ 25.443356][ T7] bridge0: port 2(bridge_slave_1) entered forwarding state [ 25.454659][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 25.463501][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 25.475166][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 25.488068][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 25.496307][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 25.503665][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 25.511832][ T323] device veth0_vlan entered promiscuous mode [ 25.522084][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 25.531192][ T323] device veth1_macvtap entered promiscuous mode [ 25.539684][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 25.549534][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready 2026/08/10 06:37:54 executed programs: 0 [ 26.072898][ T364] bridge0: port 1(bridge_slave_0) entered blocking state [ 26.080436][ T364] bridge0: port 1(bridge_slave_0) entered disabled state [ 26.087850][ T364] device bridge_slave_0 entered promiscuous mode [ 26.094729][ T364] bridge0: port 2(bridge_slave_1) entered blocking state [ 26.101824][ T364] bridge0: port 2(bridge_slave_1) entered disabled state [ 26.109231][ T364] device bridge_slave_1 entered promiscuous mode [ 26.144687][ T364] bridge0: port 2(bridge_slave_1) entered blocking state [ 26.151740][ T364] bridge0: port 2(bridge_slave_1) entered forwarding state [ 26.158996][ T364] bridge0: port 1(bridge_slave_0) entered blocking state [ 26.166040][ T364] bridge0: port 1(bridge_slave_0) entered forwarding state [ 26.181027][ T330] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 26.188952][ T330] bridge0: port 1(bridge_slave_0) entered disabled state [ 26.196867][ T330] bridge0: port 2(bridge_slave_1) entered disabled state [ 26.205408][ T330] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 26.213796][ T330] bridge0: port 1(bridge_slave_0) entered blocking state [ 26.220843][ T330] bridge0: port 1(bridge_slave_0) entered forwarding state [ 26.232990][ T330] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 26.241200][ T330] bridge0: port 2(bridge_slave_1) entered blocking state [ 26.248234][ T330] bridge0: port 2(bridge_slave_1) entered forwarding state [ 26.259084][ T330] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 26.272109][ T330] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 26.280453][ T330] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 26.294222][ T364] device veth0_vlan entered promiscuous mode [ 26.301413][ T330] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 26.310071][ T330] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 26.318577][ T330] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 26.326652][ T330] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 26.336437][ T330] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 26.344176][ T330] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 26.357112][ T364] device veth1_macvtap entered promiscuous mode [ 26.364925][ T330] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 26.373188][ T330] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 26.381680][ T330] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 26.390809][ T330] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 26.399180][ T330] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 26.412725][ T330] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 26.421345][ T330] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 26.441289][ T382] ================================================================== [ 26.449387][ T382] BUG: KASAN: use-after-free in pppol2tp_sock_to_session+0x1a0/0x1b0 [ 26.457429][ T382] Read of size 4 at addr ffff88811103b000 by task syz.2.17/382 [ 26.464949][ T382] [ 26.467273][ T382] CPU: 1 PID: 382 Comm: syz.2.17 Not tainted syzkaller #0 [ 26.474360][ T382] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026 [ 26.484404][ T382] Call Trace: [ 26.487699][ T382] __dump_stack+0x21/0x24 [ 26.492004][ T382] dump_stack_lvl+0x1a7/0x208 [ 26.496659][ T382] ? show_regs_print_info+0x18/0x18 [ 26.501832][ T382] ? thaw_kernel_threads+0x220/0x220 [ 26.507117][ T382] print_address_description+0x7f/0x2c0 [ 26.512660][ T382] ? pppol2tp_sock_to_session+0x1a0/0x1b0 [ 26.518358][ T382] kasan_report+0x100/0x140 [ 26.522834][ T382] ? __kasan_check_write+0x14/0x20 [ 26.527920][ T382] ? pppol2tp_sock_to_session+0x1a0/0x1b0 [ 26.533612][ T382] __asan_report_load4_noabort+0x14/0x20 [ 26.539237][ T382] pppol2tp_sock_to_session+0x1a0/0x1b0 [ 26.544754][ T382] pppol2tp_release+0x150/0x2b0 [ 26.549586][ T382] sock_close+0xb8/0x200 [ 26.553817][ T382] ? sock_mmap+0xa0/0xa0 [ 26.558049][ T382] __fput+0x2dc/0x730 [ 26.562004][ T382] ____fput+0x15/0x20 [ 26.566029][ T382] task_work_run+0x127/0x190 [ 26.570613][ T382] exit_to_user_mode_loop+0xcb/0xe0 [ 26.575792][ T382] exit_to_user_mode_prepare+0x76/0xa0 [ 26.581400][ T382] syscall_exit_to_user_mode+0x1d/0x40 [ 26.586835][ T382] do_syscall_64+0x3d/0x40 [ 26.591243][ T382] entry_SYSCALL_64_after_hwframe+0x61/0xcb [ 26.597111][ T382] RIP: 0033:0x7fccc74ef0d9 [ 26.601506][ T382] Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 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 e8 ff ff ff f7 d8 64 89 01 48 [ 26.621090][ T382] RSP: 002b:00007ffdb0a19398 EFLAGS: 00000246 ORIG_RAX: 00000000000001b4 [ 26.629491][ T382] RAX: 0000000000000000 RBX: 00007ffdb0a19480 RCX: 00007fccc74ef0d9 [ 26.637445][ T382] RDX: 0000000000000000 RSI: 000000000000001e RDI: 0000000000000003 [ 26.645409][ T382] RBP: 000000000000672d R08: 0000000000000001 R09: 0000000000000000 [ 26.653389][ T382] R10: 0000001b32b20000 R11: 0000000000000246 R12: 00007ffdb0a194c0 [ 26.661374][ T382] R13: 00007fccc7776fac R14: 0000000000006761 R15: 00007fccc7776fa0 [ 26.669324][ T382] [ 26.671714][ T382] Allocated by task 383: [ 26.675955][ T382] __kasan_kmalloc+0xd4/0x100 [ 26.680618][ T382] __kmalloc+0x19f/0x330 [ 26.684835][ T382] l2tp_session_create+0x39/0xb60 [ 26.689849][ T382] pppol2tp_connect+0xbf5/0x1640 [ 26.694775][ T382] __sys_connect+0x3ce/0x450 [ 26.699341][ T382] __x64_sys_connect+0x7a/0x90 [ 26.704172][ T382] do_syscall_64+0x31/0x40 [ 26.708558][ T382] entry_SYSCALL_64_after_hwframe+0x61/0xcb [ 26.714421][ T382] [ 26.716725][ T382] Freed by task 381: [ 26.720617][ T382] kasan_set_track+0x4a/0x70 [ 26.725183][ T382] kasan_set_free_info+0x23/0x40 [ 26.730109][ T382] ____kasan_slab_free+0x125/0x160 [ 26.735208][ T382] __kasan_slab_free+0x11/0x20 [ 26.739942][ T382] slab_free_freelist_hook+0xc5/0x190 [ 26.745285][ T382] kfree+0xc0/0x270 [ 26.749164][ T382] l2tp_session_put+0xb2/0x1a0 [ 26.753902][ T382] l2tp_session_delete+0x3a9/0x4a0 [ 26.758993][ T382] l2tp_tunnel_del_work+0x180/0x3d0 [ 26.764165][ T382] process_one_work+0x6fd/0xbc0 [ 26.768991][ T382] worker_thread+0xa8e/0x13c0 [ 26.773638][ T382] kthread+0x324/0x3b0 [ 26.777701][ T382] ret_from_fork+0x1f/0x30 [ 26.782095][ T382] [ 26.784398][ T382] The buggy address belongs to the object at ffff88811103b000 [ 26.784398][ T382] which belongs to the cache kmalloc-512 of size 512 [ 26.798428][ T382] The buggy address is located 0 bytes inside of [ 26.798428][ T382] 512-byte region [ffff88811103b000, ffff88811103b200) [ 26.811520][ T382] The buggy address belongs to the page: [ 26.817144][ T382] page:ffffea0004440e00 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x111038 [ 26.827356][ T382] head:ffffea0004440e00 order:2 compound_mapcount:0 compound_pincount:0 [ 26.835665][ T382] flags: 0x4000000000010200(slab|head) [ 26.841110][ T382] raw: 4000000000010200 dead000000000100 dead000000000122 ffff888100043080 [ 26.849697][ T382] raw: 0000000000000000 0000000080100010 00000001ffffffff 0000000000000000 [ 26.858263][ T382] page dumped because: kasan: bad access detected [ 26.864668][ T382] page_owner tracks the page as allocated [ 26.870556][ T382] page last allocated via order 2, migratetype Unmovable, gfp_mask 0x1d2a20(GFP_ATOMIC|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC|__GFP_HARDWALL), pid 25, ts 26437748115, free_ts 26431050964 [ 26.890256][ T382] prep_new_page+0x176/0x190 [ 26.894821][ T382] get_page_from_freelist+0x225f/0x23f0 [ 26.900346][ T382] __alloc_pages_nodemask+0x29a/0x640 [ 26.905724][ T382] new_slab+0x84/0x3f0 [ 26.909872][ T382] ___slab_alloc+0x2f8/0x4c0 [ 26.914435][ T382] __slab_alloc+0x63/0xa0 [ 26.918739][ T382] __kmalloc_track_caller+0x1e4/0x310 [ 26.924085][ T382] __alloc_skb+0xdc/0x520 [ 26.928499][ T382] ndisc_send_ns+0x347/0xb10 [ 26.933064][ T382] addrconf_dad_work+0xa40/0x1480 [ 26.938086][ T382] process_one_work+0x6fd/0xbc0 [ 26.942927][ T382] worker_thread+0xa8e/0x13c0 [ 26.947576][ T382] kthread+0x324/0x3b0 [ 26.951615][ T382] ret_from_fork+0x1f/0x30 [ 26.955997][ T382] page last free stack trace: [ 26.960647][ T382] __free_pages_ok+0x80b/0x830 [ 26.965378][ T382] __free_pages+0xd8/0x390 [ 26.969784][ T382] __free_slab+0xcf/0x190 [ 26.974080][ T382] unfreeze_partials+0x150/0x180 [ 26.979003][ T382] put_cpu_partial+0xc1/0x180 [ 26.983651][ T382] __slab_free+0x2c9/0x3a0 [ 26.988046][ T382] ___cache_free+0x10e/0x130 [ 26.992620][ T382] qlink_free+0x50/0x90 [ 26.996751][ T382] qlist_free_all+0x5f/0xb0 [ 27.001323][ T382] kasan_quarantine_reduce+0x14a/0x160 [ 27.007075][ T382] __kasan_slab_alloc+0x2f/0xe0 [ 27.011931][ T382] slab_post_alloc_hook+0x5d/0x2f0 [ 27.017119][ T382] __kmalloc+0x17b/0x330 [ 27.021337][ T382] fib6_info_alloc+0x34/0xe0 [ 27.025898][ T382] ip6_route_info_create+0x4c7/0x1450 [ 27.031260][ T382] ip6_route_add+0x27/0x130 [ 27.035730][ T382] [ 27.038030][ T382] Memory state around the buggy address: [ 27.043633][ T382] ffff88811103af00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 27.051665][ T382] ffff88811103af80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 27.059701][ T382] >ffff88811103b000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 27.067732][ T382] ^ [ 27.071790][ T382] ffff88811103b080: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 27.079828][ T382] ffff88811103b100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 27.087877][ T382] ================================================================== [ 27.095918][ T382] Disabling lock debugging due to kernel taint [ 27.106930][ T382] ------------[ cut here ]------------ [ 27.112421][ T382] WARNING: CPU: 1 PID: 382 at net/l2tp/l2tp_ppp.c:156 pppol2tp_sock_to_session+0x167/0x1b0 [ 27.122446][ T382] Modules linked in: [ 27.126715][ T382] CPU: 1 PID: 382 Comm: syz.2.17 Tainted: G B syzkaller #0 [ 27.135247][ T382] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026 [ 27.145352][ T382] RIP: 0010:pppol2tp_sock_to_session+0x167/0x1b0 [ 27.151843][ T382] Code: 5d c3 e8 8c dc 35 fd be 02 00 00 00 eb 0a e8 80 dc 35 fd be 01 00 00 00 4c 89 f7 e8 f3 32 0f fe e9 0f ff ff ff e8 69 dc 35 fd <0f> 0b 48 89 df e8 ef 00 00 00 eb bd e8 58 dc 35 fd 4c 89 f7 be 03 [ 27.171676][ T382] RSP: 0018:ffffc90002a17d68 EFLAGS: 00010293 [ 27.177881][ T382] RAX: ffffffff842ec977 RBX: ffff888111066800 RCX: ffff8881102393c0 [ 27.185893][ T382] RDX: 0000000000000000 RSI: 0000000005defa20 RDI: 000000000c04eb7d [ 27.193913][ T382] RBP: ffffc90002a17d88 R08: 0000000000000003 R09: 0000000000000004 [ 27.203036][ T382] R10: dffffc0000000000 R11: fffffbfff0dcf648 R12: dffffc0000000000 [ 27.211355][ T382] R13: dffffc0000000000 R14: 0000000005defa20 R15: ffff88811103b000 [ 27.219453][ T382] FS: 0000555561236500(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000 [ 27.228500][ T382] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 27.235103][ T382] CR2: 0000200000000240 CR3: 0000000110853000 CR4: 00000000003506a0 [ 27.243493][ T382] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 27.252128][ T382] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 27.260298][ T382] Call Trace: [ 27.263590][ T382] pppol2tp_release+0x150/0x2b0 [ 27.268490][ T382] sock_close+0xb8/0x200 [ 27.272738][ T382] ? sock_mmap+0xa0/0xa0 [ 27.276993][ T382] __fput+0x2dc/0x730 [ 27.280966][ T382] ____fput+0x15/0x20 [ 27.284925][ T382] task_work_run+0x127/0x190 [ 27.289683][ T382] exit_to_user_mode_loop+0xcb/0xe0 [ 27.294866][ T382] exit_to_user_mode_prepare+0x76/0xa0 [ 27.300329][ T382] syscall_exit_to_user_mode+0x1d/0x40 [ 27.305806][ T382] do_syscall_64+0x3d/0x40 [ 27.310425][ T382] entry_SYSCALL_64_after_hwframe+0x61/0xcb [ 27.317799][ T382] RIP: 0033:0x7fccc74ef0d9 [ 27.322226][ T382] Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 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 e8 ff ff ff f7 d8 64 89 01 48 [ 27.341993][ T382] RSP: 002b:00007ffdb0a19398 EFLAGS: 00000246 ORIG_RAX: 00000000000001b4 [ 27.350515][ T382] RAX: 0000000000000000 RBX: 00007ffdb0a19480 RCX: 00007fccc74ef0d9 [ 27.358540][ T382] RDX: 0000000000000000 RSI: 000000000000001e RDI: 0000000000000003 [ 27.366630][ T382] RBP: 000000000000672d R08: 0000000000000001 R09: 0000000000000000 [ 27.374624][ T382] R10: 0000001b32b20000 R11: 0000000000000246 R12: 00007ffdb0a194c0 [ 27.383400][ T382] R13: 00007fccc7776fac R14: 0000000000006761 R15: 00007fccc7776fa0 [ 27.391450][ T382] ---[ end trace e3a4c09e29d56093 ]---