[ 61.440839][ T40] audit: type=1400 audit(1780367523.261:190): avc: denied { transition } for pid=5825 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 [ 61.450180][ T40] audit: type=1400 audit(1780367523.271:191): avc: denied { noatsecure } for pid=5825 comm="sshd-session" scontext=system_u:system_r:sshd_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1 [ 61.458199][ T40] audit: type=1400 audit(1780367523.281:192): avc: denied { rlimitinh } for pid=5825 comm="sh" scontext=system_u:system_r:sshd_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1 [ 61.465838][ T40] audit: type=1400 audit(1780367523.281:193): avc: denied { siginh } for pid=5825 comm="sh" scontext=system_u:system_r:sshd_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1 Warning: Permanently added '[localhost]:53834' (ED25519) to the list of known hosts. [ 65.783928][ T40] audit: type=1400 audit(1780367527.611:194): avc: denied { execute } for pid=5841 comm="sh" name="syz-execprog" dev="sda1" ino=2020 scontext=root:sysadm_r:sysadm_t tcontext=root:object_r:etc_runtime_t tclass=file permissive=1 [ 65.790575][ T40] audit: type=1400 audit(1780367527.611:195): avc: denied { execute_no_trans } for pid=5841 comm="sh" path="/syz-execprog" dev="sda1" ino=2020 scontext=root:sysadm_r:sysadm_t tcontext=root:object_r:etc_runtime_t tclass=file permissive=1 2026/06/02 02:32:07 ignoring optional flag "type"="qemu" 2026/06/02 02:32:07 parsed 1 programs [ 66.163561][ T40] audit: type=1400 audit(1780367527.991:196): avc: denied { unlink } for pid=5849 comm="syz-executor" name="swap-file" dev="sda1" ino=2027 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:unlabeled_t tclass=file permissive=1 trawcon="root:object_r:swapfile_t" [ 66.349088][ T40] audit: type=1400 audit(1780367528.171:197): avc: denied { write } for pid=5850 comm="dhcpcd-run-hook" name="hook-state" dev="tmpfs" ino=1842 scontext=system_u:system_r:dhcpc_t tcontext=system_u:object_r:tmpfs_t tclass=dir permissive=1 [ 66.392415][ T40] audit: type=1400 audit(1780367528.221:198): avc: denied { write } for pid=5853 comm="rm" name="hook-state" dev="tmpfs" ino=1842 scontext=system_u:system_r:dhcpc_t tcontext=system_u:object_r:tmpfs_t tclass=dir permissive=1 [ 66.817251][ T40] audit: type=1400 audit(1780367528.641:199): avc: denied { write } for pid=5857 comm="dhcpcd-run-hook" name="hook-state" dev="tmpfs" ino=1842 scontext=system_u:system_r:dhcpc_t tcontext=system_u:object_r:tmpfs_t tclass=dir permissive=1 [ 66.881663][ T40] audit: type=1400 audit(1780367528.711:200): avc: denied { write } for pid=5860 comm="rm" name="hook-state" dev="tmpfs" ino=1842 scontext=system_u:system_r:dhcpc_t tcontext=system_u:object_r:tmpfs_t tclass=dir permissive=1 [ 66.969861][ T40] audit: type=1400 audit(1780367528.791:201): avc: denied { write } for pid=5864 comm="dhcpcd-run-hook" name="hook-state" dev="tmpfs" ino=1842 scontext=system_u:system_r:dhcpc_t tcontext=system_u:object_r:tmpfs_t tclass=dir permissive=1 [ 67.042571][ T40] audit: type=1400 audit(1780367528.871:202): avc: denied { write } for pid=5867 comm="rm" name="hook-state" dev="tmpfs" ino=1842 scontext=system_u:system_r:dhcpc_t tcontext=system_u:object_r:tmpfs_t tclass=dir permissive=1 [ 67.281003][ T5849] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k 2026/06/02 02:32:09 executed programs: 0 [ 67.327451][ T5095] Bluetooth: hci0: unexpected cc 0x0c03 length: 249 > 1 [ 67.332237][ T5095] Bluetooth: hci0: unexpected cc 0x1003 length: 249 > 9 [ 67.336060][ T5095] Bluetooth: hci0: unexpected cc 0x1001 length: 249 > 9 [ 67.341597][ T5095] Bluetooth: hci0: unexpected cc 0x0c23 length: 249 > 4 [ 67.345501][ T5095] Bluetooth: hci0: unexpected cc 0x0c38 length: 249 > 2 [ 67.423318][ T40] audit: type=1400 audit(1780367529.251:203): avc: denied { write } for pid=5883 comm="dhcpcd-run-hook" name="hook-state" dev="tmpfs" ino=1842 scontext=system_u:system_r:dhcpc_t tcontext=system_u:object_r:tmpfs_t tclass=dir permissive=1 [ 67.472365][ T40] audit: type=1400 audit(1780367529.301:204): avc: denied { write } for pid=5889 comm="rm" name="hook-state" dev="tmpfs" ino=1842 scontext=system_u:system_r:dhcpc_t tcontext=system_u:object_r:tmpfs_t tclass=dir permissive=1 [ 67.699039][ T5876] bridge0: port 1(bridge_slave_0) entered blocking state [ 67.702182][ T5876] bridge0: port 1(bridge_slave_0) entered disabled state [ 67.705420][ T5876] bridge_slave_0: entered allmulticast mode [ 67.709280][ T5876] bridge_slave_0: entered promiscuous mode [ 67.717418][ T5876] bridge0: port 2(bridge_slave_1) entered blocking state [ 67.720503][ T5876] bridge0: port 2(bridge_slave_1) entered disabled state [ 67.723561][ T5876] bridge_slave_1: entered allmulticast mode [ 67.727448][ T5876] bridge_slave_1: entered promiscuous mode [ 67.782420][ T5876] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 67.789236][ T5876] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 67.841212][ T5876] team0: Port device team_slave_0 added [ 67.845242][ T5876] team0: Port device team_slave_1 added [ 67.894661][ T5876] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 67.897282][ T5876] 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 1532 would solve the problem. [ 67.906784][ T5876] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 67.912283][ T5876] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 67.914997][ T5876] 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 1532 would solve the problem. [ 67.924679][ T5876] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 67.985492][ T5876] hsr_slave_0: entered promiscuous mode [ 67.988940][ T5876] hsr_slave_1: entered promiscuous mode [ 68.153158][ T40] audit: type=1400 audit(1780367529.981:205): avc: denied { write } for pid=5903 comm="dhcpcd-run-hook" name="hook-state" dev="tmpfs" ino=1842 scontext=system_u:system_r:dhcpc_t tcontext=system_u:object_r:tmpfs_t tclass=dir permissive=1 [ 68.212574][ T40] audit: type=1400 audit(1780367530.041:206): avc: denied { write } for pid=5906 comm="rm" name="hook-state" dev="tmpfs" ino=1842 scontext=system_u:system_r:dhcpc_t tcontext=system_u:object_r:tmpfs_t tclass=dir permissive=1 [ 68.293472][ T40] audit: type=1400 audit(1780367530.121:207): avc: denied { write } for pid=5908 comm="dhcpcd-run-hook" name="hook-state" dev="tmpfs" ino=1842 scontext=system_u:system_r:dhcpc_t tcontext=system_u:object_r:tmpfs_t tclass=dir permissive=1 [ 68.337634][ T40] audit: type=1400 audit(1780367530.161:208): avc: denied { write } for pid=5911 comm="rm" name="hook-state" dev="tmpfs" ino=1842 scontext=system_u:system_r:dhcpc_t tcontext=system_u:object_r:tmpfs_t tclass=dir permissive=1 [ 68.490758][ T5876] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 68.495660][ T5876] 8021q: adding VLAN 0 to HW filter on device netdevsim0 [ 68.498541][ T5876] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 68.502639][ T5876] 8021q: adding VLAN 0 to HW filter on device netdevsim1 [ 68.505612][ T5876] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 68.509826][ T5876] 8021q: adding VLAN 0 to HW filter on device netdevsim2 [ 68.513232][ T5876] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 68.520320][ T5876] 8021q: adding VLAN 0 to HW filter on device netdevsim3 [ 68.532649][ T5876] bridge0: port 2(bridge_slave_1) entered blocking state [ 68.534873][ T5876] bridge0: port 2(bridge_slave_1) entered forwarding state [ 68.537217][ T5876] bridge0: port 1(bridge_slave_0) entered blocking state [ 68.539387][ T5876] bridge0: port 1(bridge_slave_0) entered forwarding state [ 68.573163][ T5876] 8021q: adding VLAN 0 to HW filter on device bond0 [ 68.582205][ T12] bridge0: port 1(bridge_slave_0) entered disabled state [ 68.584972][ T12] bridge0: port 2(bridge_slave_1) entered disabled state [ 68.595259][ T5876] 8021q: adding VLAN 0 to HW filter on device team0 [ 68.601655][ T59] bridge0: port 1(bridge_slave_0) entered blocking state [ 68.604093][ T59] bridge0: port 1(bridge_slave_0) entered forwarding state [ 68.612327][ T12] bridge0: port 2(bridge_slave_1) entered blocking state [ 68.614807][ T12] bridge0: port 2(bridge_slave_1) entered forwarding state [ 68.883451][ T5876] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 68.915278][ T5876] veth0_vlan: entered promiscuous mode [ 68.924804][ T5876] veth1_vlan: entered promiscuous mode [ 68.952441][ T5876] veth0_macvtap: entered promiscuous mode [ 68.957979][ T5876] veth1_macvtap: entered promiscuous mode [ 68.971867][ T5876] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 68.981542][ T5876] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 68.992201][ T46] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 68.995578][ T46] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 68.999719][ T46] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 69.003817][ T46] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 69.178149][ T5959] FAULT_INJECTION: forcing a failure. [ 69.178149][ T5959] name failslab, interval 1, probability 0, space 0, times 1 [ 69.183768][ T5959] CPU: 0 UID: 0 PID: 5959 Comm: syz-executor.0 Not tainted syzkaller #0 PREEMPT(full) [ 69.183833][ T5959] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 69.183843][ T5959] Call Trace: [ 69.183850][ T5959] [ 69.183854][ T5959] dump_stack_lvl+0x100/0x190 [ 69.183873][ T5959] should_fail_ex.cold+0x5/0xa [ 69.183889][ T5959] should_failslab+0xc2/0x120 [ 69.183902][ T5959] __kmalloc_cache_node_noprof+0x7d/0x770 [ 69.183915][ T5959] ? sbitmap_queue_init_node+0x291/0x4a0 [ 69.183930][ T5959] sbitmap_queue_init_node+0x291/0x4a0 [ 69.183944][ T5959] blk_mq_init_tags+0x184/0x300 [ 69.183956][ T5959] blk_mq_alloc_map_and_rqs+0x218/0xeb0 [ 69.183975][ T5959] ? __kmalloc_node_noprof+0x324/0x850 [ 69.183991][ T5959] ? blk_mq_update_nr_hw_queues+0xa5d/0x15f0 [ 69.184011][ T5959] blk_mq_update_nr_hw_queues+0xc77/0x15f0 [ 69.184028][ T5959] ? nbd_start_device+0x107/0xbd0 [ 69.184084][ T5959] ? __pfx_blk_mq_update_nr_hw_queues+0x10/0x10 [ 69.184112][ T5959] nbd_start_device+0x1a6/0xbd0 [ 69.184130][ T5959] ? security_capable+0x80/0x260 [ 69.184146][ T5959] nbd_ioctl+0x4a6/0xd30 [ 69.184162][ T5959] ? __pfx_do_vfs_ioctl+0x10/0x10 [ 69.184174][ T5959] ? __pfx_nbd_ioctl+0x10/0x10 [ 69.184189][ T5959] ? __pfx_ioctl_has_perm.constprop.0.isra.0+0x10/0x10 [ 69.184210][ T5959] ? __fget_files+0x215/0x3d0 [ 69.184224][ T5959] ? __pfx_nbd_ioctl+0x10/0x10 [ 69.184241][ T5959] blkdev_ioctl+0x5ad/0x6f0 [ 69.184256][ T5959] ? __pfx_blkdev_ioctl+0x10/0x10 [ 69.184274][ T5959] ? selinux_file_ioctl+0x13b/0x290 [ 69.184289][ T5959] ? selinux_file_ioctl+0xb6/0x290 [ 69.184306][ T5959] ? __pfx_blkdev_ioctl+0x10/0x10 [ 69.184321][ T5959] __x64_sys_ioctl+0x18e/0x210 [ 69.184334][ T5959] do_syscall_64+0x115/0x870 [ 69.184424][ T5959] ? clear_bhb_loop+0x40/0x90 [ 69.184443][ T5959] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 69.184459][ T5959] RIP: 0033:0x7f20f2a6d179 [ 69.184473][ T5959] 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 d0 ff ff ff f7 d8 64 89 01 48 [ 69.184490][ T5959] RSP: 002b:00007f20f37e3078 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 69.184506][ T5959] RAX: ffffffffffffffda RBX: 00007f20f2babf80 RCX: 00007f20f2a6d179 [ 69.184519][ T5959] RDX: 0000000000000000 RSI: 000000000000ab03 RDI: 0000000000000007 [ 69.184528][ T5959] RBP: 00007f20f37e30e0 R08: 0000000000000000 R09: 0000000000000000 [ 69.184540][ T5959] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002 [ 69.184550][ T5959] R13: 000000000000000b R14: 00007f20f2babf80 R15: 00007ffc1be217a8 [ 69.184574][ T5959] [ 69.421518][ T62] Bluetooth: hci0: command tx timeout [ 69.882098][ T5688] block nbd0: Receive control failed (result -32) [ 69.882099][ T5095] block nbd0: Receive control failed (result -32) [ 69.888399][ T5959] block nbd0: shutting down sockets [ 70.040190][ T5992] block nbd0: Device being setup by another task [ 70.045199][ T5991] FAULT_INJECTION: forcing a failure. [ 70.045199][ T5991] name failslab, interval 1, probability 0, space 0, times 0 [ 70.050499][ T5991] CPU: 3 UID: 0 PID: 5991 Comm: syz-executor.0 Not tainted syzkaller #0 PREEMPT(full) [ 70.050521][ T5991] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 70.050530][ T5991] Call Trace: [ 70.050536][ T5991] [ 70.050543][ T5991] dump_stack_lvl+0x100/0x190 [ 70.050569][ T5991] should_fail_ex.cold+0x5/0xa [ 70.050592][ T5991] should_failslab+0xc2/0x120 [ 70.050612][ T5991] kmem_cache_alloc_noprof+0x7b/0x6e0 [ 70.050636][ T5991] ? security_inode_alloc+0x3b/0x2c0 [ 70.050658][ T5991] ? lockdep_init_map_type+0x5c/0x250 [ 70.050682][ T5991] security_inode_alloc+0x3b/0x2c0 [ 70.050711][ T5991] inode_init_always_gfp+0xc77/0xfb0 [ 70.050736][ T5991] alloc_inode+0x8e/0x250 [ 70.050752][ T5991] new_inode+0x22/0x1c0 [ 70.050771][ T5991] __debugfs_create_file+0x105/0x4f0 [ 70.050795][ T5991] debugfs_create_file_full+0x41/0x60 [ 70.050817][ T5991] nbd_start_device+0x4b3/0xbd0 [ 70.050843][ T5991] ? security_capable+0x80/0x260 [ 70.050865][ T5991] nbd_ioctl+0x4a6/0xd30 [ 70.050888][ T5991] ? __pfx_do_vfs_ioctl+0x10/0x10 [ 70.050906][ T5991] ? __pfx_nbd_ioctl+0x10/0x10 [ 70.050927][ T5991] ? __pfx_ioctl_has_perm.constprop.0.isra.0+0x10/0x10 [ 70.050958][ T5991] ? __fget_files+0x215/0x3d0 [ 70.050979][ T5991] ? __pfx_nbd_ioctl+0x10/0x10 [ 70.051002][ T5991] blkdev_ioctl+0x5ad/0x6f0 [ 70.051025][ T5991] ? __pfx_blkdev_ioctl+0x10/0x10 [ 70.051045][ T5991] ? selinux_file_ioctl+0x13b/0x290 [ 70.051068][ T5991] ? selinux_file_ioctl+0xb6/0x290 [ 70.051092][ T5991] ? __pfx_blkdev_ioctl+0x10/0x10 [ 70.051115][ T5991] __x64_sys_ioctl+0x18e/0x210 [ 70.051134][ T5991] do_syscall_64+0x115/0x870 [ 70.051154][ T5991] ? clear_bhb_loop+0x40/0x90 [ 70.051174][ T5991] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 70.051191][ T5991] RIP: 0033:0x7f20f2a6d179 [ 70.051205][ T5991] 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 d0 ff ff ff f7 d8 64 89 01 48 [ 70.051219][ T5991] RSP: 002b:00007f20f37e3078 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 70.051235][ T5991] RAX: ffffffffffffffda RBX: 00007f20f2babf80 RCX: 00007f20f2a6d179 [ 70.051245][ T5991] RDX: 0000000000000000 RSI: 000000000000ab03 RDI: 0000000000000007 [ 70.051255][ T5991] RBP: 00007f20f37e30e0 R08: 0000000000000000 R09: 0000000000000000 [ 70.051264][ T5991] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002 [ 70.051273][ T5991] R13: 000000000000000b R14: 00007f20f2babf80 R15: 00007ffc1be217a8 [ 70.051295][ T5991] [ 70.051315][ T5991] debugfs: out of free dentries, can not create file 'flags' [ 70.742317][ T5095] block nbd0: Receive control failed (result -32) [ 70.745511][ T5991] block nbd0: shutting down sockets [ 70.932173][ T5994] ================================================================== [ 70.934650][ T5994] BUG: KASAN: slab-out-of-bounds in blk_mq_free_rqs+0x6e2/0x760 [ 70.937008][ T5994] Read of size 8 at addr ffff8880280d4828 by task syz-executor.0/5994 [ 70.941179][ T5994] [ 70.942491][ T5994] CPU: 2 UID: 0 PID: 5994 Comm: syz-executor.0 Not tainted syzkaller #0 PREEMPT(full) [ 70.942509][ T5994] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 70.942519][ T5994] Call Trace: [ 70.942525][ T5994] [ 70.942536][ T5994] dump_stack_lvl+0x100/0x190 [ 70.942557][ T5994] print_report+0x13d/0x4b0 [ 70.942577][ T5994] ? __virt_addr_valid+0x239/0x430 [ 70.942588][ T5994] ? blk_mq_free_rqs+0x6e2/0x760 [ 70.942606][ T5994] kasan_report+0xdf/0x1d0 [ 70.942618][ T5994] ? blk_mq_free_rqs+0x6e2/0x760 [ 70.942633][ T5994] blk_mq_free_rqs+0x6e2/0x760 [ 70.942649][ T5994] blk_mq_free_map_and_rqs+0x30/0x120 [ 70.942665][ T5994] blk_mq_free_sched_tags+0xeb/0x1b0 [ 70.942679][ T5994] blk_mq_free_sched_res+0x52/0x150 [ 70.942692][ T5994] elevator_change_done+0x187/0x650 [ 70.942704][ T5994] ? lockdep_hardirqs_on+0x78/0x100 [ 70.942718][ T5994] ? __pfx_elevator_change_done+0x10/0x10 [ 70.942731][ T5994] elevator_change+0x2d7/0x530 [ 70.942743][ T5994] elevator_set_none+0x92/0xf0 [ 70.942755][ T5994] ? __pfx_elevator_set_none+0x10/0x10 [ 70.942767][ T5994] ? blk_mq_unregister_hctx.part.0+0x1ba/0x230 [ 70.942782][ T5994] blk_mq_update_nr_hw_queues+0x4c1/0x15f0 [ 70.942798][ T5994] ? nbd_start_device+0x107/0xbd0 [ 70.942814][ T5994] ? __mutex_unlock_slowpath+0x15d/0x8a0 [ 70.942828][ T5994] ? __pfx_blk_mq_update_nr_hw_queues+0x10/0x10 [ 70.942847][ T5994] nbd_start_device+0x1a6/0xbd0 [ 70.942862][ T5994] ? security_capable+0x80/0x260 [ 70.942875][ T5994] nbd_ioctl+0x4a6/0xd30 [ 70.942890][ T5994] ? __pfx_do_vfs_ioctl+0x10/0x10 [ 70.942900][ T5994] ? __pfx_nbd_ioctl+0x10/0x10 [ 70.942914][ T5994] ? __pfx_ioctl_has_perm.constprop.0.isra.0+0x10/0x10 [ 70.942932][ T5994] ? __fget_files+0x215/0x3d0 [ 70.942945][ T5994] ? __pfx_nbd_ioctl+0x10/0x10 [ 70.942959][ T5994] blkdev_ioctl+0x5ad/0x6f0 [ 70.942973][ T5994] ? __pfx_blkdev_ioctl+0x10/0x10 [ 70.942986][ T5994] ? selinux_file_ioctl+0x13b/0x290 [ 70.943001][ T5994] ? selinux_file_ioctl+0xb6/0x290 [ 70.943016][ T5994] ? __pfx_blkdev_ioctl+0x10/0x10 [ 70.943029][ T5994] __x64_sys_ioctl+0x18e/0x210 [ 70.943041][ T5994] do_syscall_64+0x115/0x870 [ 70.943054][ T5994] ? clear_bhb_loop+0x40/0x90 [ 70.943066][ T5994] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 70.943076][ T5994] RIP: 0033:0x7f20f2a6d179 [ 70.943085][ T5994] 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 d0 ff ff ff f7 d8 64 89 01 48 [ 70.943095][ T5994] RSP: 002b:00007f20f37e3078 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 70.943105][ T5994] RAX: ffffffffffffffda RBX: 00007f20f2babf80 RCX: 00007f20f2a6d179 [ 70.943112][ T5994] RDX: 0000000000000000 RSI: 000000000000ab03 RDI: 0000000000000007 [ 70.943118][ T5994] RBP: 00007f20f37e30e0 R08: 0000000000000000 R09: 0000000000000000 [ 70.943124][ T5994] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002 [ 70.943129][ T5994] R13: 000000000000000b R14: 00007f20f2babf80 R15: 00007ffc1be217a8 [ 70.943138][ T5994] [ 70.943142][ T5994] [ 71.040331][ T5994] Allocated by task 1: [ 71.041587][ T5994] kasan_save_stack+0x30/0x50 [ 71.043058][ T5994] kasan_save_track+0x14/0x30 [ 71.044514][ T5994] __kasan_kmalloc+0xaa/0xb0 [ 71.045930][ T5994] __kmalloc_node_noprof+0x307/0x850 [ 71.047566][ T5994] blk_mq_alloc_tag_set+0x477/0x1330 [ 71.049333][ T5994] nbd_dev_add+0x342/0xb10 [ 71.050837][ T5994] nbd_init+0x291/0x2b0 [ 71.052228][ T5994] do_one_initcall+0x121/0x750 [ 71.053717][ T5994] kernel_init_freeable+0x6ea/0x7b0 [ 71.055312][ T5994] kernel_init+0x1f/0x1e0 [ 71.056655][ T5994] ret_from_fork+0x72b/0xd50 [ 71.058206][ T5994] ret_from_fork_asm+0x1a/0x30 [ 71.059924][ T5994] [ 71.060698][ T5994] The buggy address belongs to the object at ffff8880280d4820 [ 71.060698][ T5994] which belongs to the cache kmalloc-8 of size 8 [ 71.064831][ T5994] The buggy address is located 0 bytes to the right of [ 71.064831][ T5994] allocated 8-byte region [ffff8880280d4820, ffff8880280d4828) [ 71.069096][ T5994] [ 71.069852][ T5994] The buggy address belongs to the physical page: [ 71.071821][ T5994] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0xffff8880280d4460 pfn:0x280d4 [ 71.074865][ T5994] flags: 0xfff00000000200(workingset|node=0|zone=1|lastcpupid=0x7ff) [ 71.077333][ T5994] page_type: f5(slab) [ 71.078497][ T5994] raw: 00fff00000000200 ffff88801b842500 ffffea00009f6190 ffffea0000a1f610 [ 71.081140][ T5994] raw: ffff8880280d4460 000000080080007f 00000000f5000000 0000000000000000 [ 71.083777][ T5994] page dumped because: kasan: bad access detected [ 71.085838][ T5994] page_owner tracks the page as allocated [ 71.087590][ T5994] page last allocated via order 0, migratetype Unmovable, gfp_mask 0xd2c00(GFP_NOIO|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC), pid 1, tgid 1 (swapper/0), ts 12042019816, free_ts 6231045139 [ 71.093493][ T5994] post_alloc_hook+0xfd/0x120 [ 71.094961][ T5994] get_page_from_freelist+0x11a6/0x3410 [ 71.096661][ T5994] __alloc_frozen_pages_noprof+0x27c/0x2bc0 [ 71.098498][ T5994] new_slab+0xa6/0x6c0 [ 71.099781][ T5994] refill_objects+0x277/0x420 [ 71.101235][ T5994] __pcs_replace_empty_main+0x375/0x650 [ 71.102960][ T5994] __kmalloc_node_track_caller_noprof+0x694/0x850 [ 71.104948][ T5994] kstrdup+0x51/0xe0 [ 71.106161][ T5994] kstrdup_const+0x63/0x80 [ 71.107557][ T5994] __kernfs_new_node+0x9b/0x9f0 [ 71.109064][ T5994] kernfs_new_node+0x11b/0x1a0 [ 71.110540][ T5994] kernfs_create_dir_ns+0x4c/0x1a0 [ 71.112147][ T5994] sysfs_create_dir_ns+0x13a/0x2b0 [ 71.113747][ T5994] kobject_add_internal+0x2c8/0x930 [ 71.115374][ T5994] kobject_add+0x16a/0x1e0 [ 71.116802][ T5994] blk_mq_register_hctx+0x124/0x460 [ 71.118409][ T5994] page last free pid 55 tgid 55 stack trace: [ 71.120241][ T5994] __free_frozen_pages+0x794/0x10a0 [ 71.121857][ T5994] vfree+0x15f/0x8d0 [ 71.123112][ T5994] delayed_vfree_work+0x56/0x80 [ 71.124623][ T5994] process_one_work+0xa0e/0x1980 [ 71.126182][ T5994] worker_thread+0x5ef/0xe50 [ 71.127627][ T5994] kthread+0x370/0x450 [ 71.128893][ T5994] ret_from_fork+0x72b/0xd50 [ 71.130415][ T5994] ret_from_fork_asm+0x1a/0x30 [ 71.131994][ T5994] [ 71.132791][ T5994] Memory state around the buggy address: [ 71.134508][ T5994] ffff8880280d4700: fa fc fc fc fa fc fc fc 05 fc fc fc 05 fc fc fc [ 71.136973][ T5994] ffff8880280d4780: 05 fc fc fc 05 fc fc fc 05 fc fc fc 00 fc fc fc [ 71.139410][ T5994] >ffff8880280d4800: 05 fc fc fc 00 fc fc fc 05 fc fc fc 05 fc fc fc [ 71.141841][ T5994] ^ [ 71.143499][ T5994] ffff8880280d4880: 05 fc fc fc 05 fc fc fc 05 fc fc fc 05 fc fc fc [ 71.145951][ T5994] ffff8880280d4900: 05 fc fc fc 05 fc fc fc 05 fc fc fc 05 fc fc fc [ 71.148410][ T5994] ================================================================== [ 71.151704][ T5994] Kernel panic - not syncing: KASAN: panic_on_warn set ... [ 71.154837][ T5994] CPU: 1 UID: 0 PID: 5994 Comm: syz-executor.0 Not tainted syzkaller #0 PREEMPT(full) [ 71.158844][ T5994] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 71.163049][ T5994] Call Trace: [ 71.164502][ T5994] [ 71.165792][ T5994] dump_stack_lvl+0x100/0x190 [ 71.167893][ T5994] vpanic+0x552/0x970 [ 71.169692][ T5994] ? __pfx_vpanic+0x10/0x10 [ 71.171645][ T5994] ? mark_held_locks+0x40/0x70 [ 71.173724][ T5994] ? blk_mq_free_rqs+0x6e2/0x760 [ 71.175870][ T5994] panic+0xd1/0xe0 [ 71.177503][ T5994] ? __pfx_panic+0x10/0x10 [ 71.179415][ T5994] ? blk_mq_free_rqs+0x6e2/0x760 [ 71.181493][ T5994] ? preempt_schedule_common+0x42/0xc0 [ 71.183836][ T5994] ? check_panic_on_warn+0x1f/0x90 [ 71.186022][ T5994] check_panic_on_warn.cold+0x19/0x34 [ 71.188311][ T5994] end_report.part.0+0x3a/0x90 [ 71.190381][ T5994] kasan_report.cold+0xe/0x18 [ 71.192441][ T5994] ? blk_mq_free_rqs+0x6e2/0x760 [ 71.194557][ T5994] blk_mq_free_rqs+0x6e2/0x760 [ 71.196619][ T5994] blk_mq_free_map_and_rqs+0x30/0x120 [ 71.198884][ T5994] blk_mq_free_sched_tags+0xeb/0x1b0 [ 71.201153][ T5994] blk_mq_free_sched_res+0x52/0x150 [ 71.203334][ T5994] elevator_change_done+0x187/0x650 [ 71.205570][ T5994] ? lockdep_hardirqs_on+0x78/0x100 [ 71.207799][ T5994] ? __pfx_elevator_change_done+0x10/0x10 [ 71.210336][ T5994] elevator_change+0x2d7/0x530 [ 71.212435][ T5994] elevator_set_none+0x92/0xf0 [ 71.214487][ T5994] ? __pfx_elevator_set_none+0x10/0x10 [ 71.216835][ T5994] ? blk_mq_unregister_hctx.part.0+0x1ba/0x230 [ 71.219419][ T5994] blk_mq_update_nr_hw_queues+0x4c1/0x15f0 [ 71.221917][ T5994] ? nbd_start_device+0x107/0xbd0 [ 71.224079][ T5994] ? __mutex_unlock_slowpath+0x15d/0x8a0 [ 71.226466][ T5994] ? __pfx_blk_mq_update_nr_hw_queues+0x10/0x10 [ 71.229293][ T5994] nbd_start_device+0x1a6/0xbd0 [ 71.231422][ T5994] ? security_capable+0x80/0x260 [ 71.233558][ T5994] nbd_ioctl+0x4a6/0xd30 [ 71.235388][ T5994] ? __pfx_do_vfs_ioctl+0x10/0x10 [ 71.237563][ T5994] ? __pfx_nbd_ioctl+0x10/0x10 [ 71.239583][ T5994] ? __pfx_ioctl_has_perm.constprop.0.isra.0+0x10/0x10 [ 71.242487][ T5994] ? __fget_files+0x215/0x3d0 [ 71.244519][ T5994] ? __pfx_nbd_ioctl+0x10/0x10 [ 71.246536][ T5994] blkdev_ioctl+0x5ad/0x6f0 [ 71.248494][ T5994] ? __pfx_blkdev_ioctl+0x10/0x10 [ 71.250691][ T5994] ? selinux_file_ioctl+0x13b/0x290 [ 71.253042][ T5994] ? selinux_file_ioctl+0xb6/0x290 [ 71.255369][ T5994] ? __pfx_blkdev_ioctl+0x10/0x10 [ 71.257532][ T5994] __x64_sys_ioctl+0x18e/0x210 [ 71.259546][ T5994] do_syscall_64+0x115/0x870 [ 71.261564][ T5994] ? clear_bhb_loop+0x40/0x90 [ 71.263625][ T5994] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 71.265963][ T5994] RIP: 0033:0x7f20f2a6d179 [ 71.267905][ T5994] 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 d0 ff ff ff f7 d8 64 89 01 48 [ 71.276135][ T5994] RSP: 002b:00007f20f37e3078 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 71.279756][ T5994] RAX: ffffffffffffffda RBX: 00007f20f2babf80 RCX: 00007f20f2a6d179 [ 71.283161][ T5994] RDX: 0000000000000000 RSI: 000000000000ab03 RDI: 0000000000000007 [ 71.286509][ T5994] RBP: 00007f20f37e30e0 R08: 0000000000000000 R09: 0000000000000000 [ 71.289844][ T5994] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002 [ 71.293179][ T5994] R13: 000000000000000b R14: 00007f20f2babf80 R15: 00007ffc1be217a8 [ 71.296531][ T5994] [ 71.298730][ T5994] Kernel Offset: disabled [ 71.300594][ T5994] Rebooting in 86400 seconds..