program: r0 = socket$netlink(0x10, 0x3, 0x0) syz_usb_connect(0x0, 0x36, &(0x7f0000000000)=ANY=[@ANYBLOB="1201000068e04d206f0e2c584b31610203010902240001000000000904000002ff47d00009056b9998f61d00040905", @ANYBLOB='c'], 0x0) r1 = syz_open_dev$usbfs(&(0x7f0000000180), 0x10000001d, 0x8041) ioctl$USBDEVFS_IOCTL(r1, 0xc0105512, &(0x7f0000000200)=@usbdevfs_connect) sendmsg$NL80211_CMD_NEW_KEY(0xffffffffffffffff, &(0x7f00000001c0)={0x0, 0x0, &(0x7f0000000180)={&(0x7f0000000040)={0x28, 0x0, 0x0, 0x0, 0x0, {{}, {@val={0x8}, @val={0xc, 0x99, {0x6, 0x65}}}}}, 0x28}}, 0x0) ioctl$sock_SIOCBRDELBR(r0, 0x89a2, &(0x7f0000000000)='bridge0\x00') socket$nl_generic(0x11, 0x3, 0x10) r2 = socket$inet6_sctp(0xa, 0x5, 0x84) shutdown(r2, 0x0) getsockopt$inet_sctp6_SCTP_SOCKOPT_CONNECTX3(r2, 0x84, 0x6f, &(0x7f0000000000)={0x0, 0x1c, &(0x7f00000000c0)=[@in6={0xa, 0x0, 0x0, @ipv4={'\x00', '\xff\xff', @initdev={0xac, 0x1e, 0x1, 0x0}}}]}, &(0x7f0000000180)=0x10) r4 = socket$inet_sctp(0x2, 0x1, 0x84) getsockopt$inet_sctp_SCTP_MAX_BURST(r4, 0x84, 0xd, &(0x7f0000000000)=@assoc_value={0x0}, &(0x7f0000000040)=0x8) setsockopt$inet_sctp6_SCTP_PEER_ADDR_PARAMS(r2, 0x84, 0x9, &(0x7f00000001c0)={r5, @in={{0x2, 0x0, @empty}}, 0x0, 0x0, 0x0, 0x0, 0x90}, 0x9c) setsockopt$inet_sctp6_SCTP_PEER_ADDR_THLDS(r2, 0x84, 0x85, &(0x7f0000000000)={r3, @in={{0x2, 0x0, @initdev={0xac, 0x1e, 0x1, 0x0}}}, 0x0, 0x7}, 0x90) syz_mount_image$udf(&(0x7f0000000180), &(0x7f0000000100)='./bus\x00', 0x1014494, &(0x7f00000002c0)={[{@iocharset={'iocharset', 0x3d, 'iso8859-4'}}, {@partition={'partition', 0x3d, 0x6}}, {@gid_forget}, {@session={'session', 0x3d, 0xfe8}}, {@noadinicb}, {@anchor}, {@uid_forget}]}, 0xfe, 0xc24, &(0x7f0000001480)="$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") r6 = open(&(0x7f0000000240)='./file1\x00', 0x145142, 0x0) ftruncate(r6, 0x2007ffc) sendfile(r6, r6, 0x0, 0x800000009) r7 = open(&(0x7f0000000000)='./bus\x00', 0x60142, 0x0) r8 = open(&(0x7f0000000080)='./bus\x00', 0x107382, 0x1d0) ftruncate(r8, 0x2007ffb) sendfile(r7, r8, 0x0, 0x1000000201005) syz_usb_connect$hid(0x0, 0x36, &(0x7f0000000380)=ANY=[@ANYBLOB="1201500200000040"], 0x0) open(&(0x7f0000000180)='./bus\x00', 0x14937e, 0x111) mount(&(0x7f0000000280)=@loop={'/dev/loop', 0x0}, &(0x7f0000000140)='./bus\x00', 0x0, 0x5000, 0x0) r9 = open(&(0x7f0000000000)='./bus\x00', 0x0, 0x0) ioctl$LOOP_SET_STATUS64(r9, 0x4c04, &(0x7f0000000540)={0x0, 0x0, 0x0, 0x0, 0x8005, 0x0, 0x0, 0x15, 0x1c, "ef359f413bb93852f7d6a4ae6dddfbd1ce5d29c2ee5e5ca9000ff8ee09e737ff0edf110ff4117639c2eb4b78c660e677df701905b9aafab4afaaf755a3f6a004", "036c47c6780820d1cbf7966d61fdcf335263bd9bffbcc2542ded71038259ca171ce1a311ef54ec32d71e14ef3dc177e9b48b00", "f28359738e229a4c66810000000000d300e6d602000000000000000000000001", [0x204]}) truncate(&(0x7f00000013c0)='./file1\x00', 0x0) r10 = openat(0xffffffffffffff9c, &(0x7f0000000040)='./file1\x00', 0x42, 0x0) pwrite64(r10, &(0x7f0000000140)='2', 0x1, 0x8080c61) [ 85.527979][ T5308] Bluetooth: hci0: command tx timeout [ 85.855715][ T5327] usb 5-1: new high-speed USB device number 2 using dummy_hcd [ 86.007367][ T5327] usb 5-1: Using ep0 maxpacket: 32 [ 86.012268][ T5327] usb 5-1: config 0 interface 0 altsetting 0 has an endpoint descriptor with address 0x6B, changing to 0xB [ 86.017454][ T5327] usb 5-1: config 0 interface 0 altsetting 0 endpoint 0xB has an invalid bInterval 29, changing to 7 [ 86.022165][ T5327] usb 5-1: config 0 interface 0 altsetting 0 endpoint 0xB has invalid maxpacket 59032, setting to 1024 [ 86.027276][ T5327] usb 5-1: config 0 interface 0 altsetting 0 has an endpoint descriptor with address 0x63, changing to 0x3 [ 86.031888][ T5327] usb 5-1: config 0 interface 0 altsetting 0 endpoint 0x3 has invalid wMaxPacketSize 0 [ 86.038791][ T5327] usb 5-1: New USB device found, idVendor=0e6f, idProduct=582c, bcdDevice=31.4b [ 86.042285][ T5327] usb 5-1: New USB device strings: Mfr=97, Product=2, SerialNumber=3 [ 86.045271][ T5327] usb 5-1: Product: syz [ 86.047510][ T5327] usb 5-1: Manufacturer: syz [ 86.049386][ T5327] usb 5-1: SerialNumber: syz [ 86.069975][ T5327] usb 5-1: config 0 descriptor?? [ 86.296431][ T5329] loop0: detected capacity change from 0 to 2048 [ 86.311486][ T5329] UDF-fs: error (device loop0): udf_read_tagged: read failed, block=2362, location=2362 [ 86.347644][ T5329] UDF-fs: error (device loop0): udf_read_tagged: tag checksum failed, block 99: 0x27 != 0x4d [ 86.353829][ T5329] UDF-fs: error (device loop0): udf_read_tagged: tag checksum failed, block 160: 0xd2 != 0xd4 [ 86.387266][ T5329] UDF-fs: INFO Mounting volume 'LinuxUDF', timestamp 2022/11/22 14:59 (1000) [ 86.447282][ T25] audit: type=1800 audit(1760123563.955:2): pid=5329 uid=0 auid=4294967295 ses=4294967295 subj=unconfined op=collect_data cause=failed(directio) comm="syz.0.0" name="file1" dev="loop0" ino=1346 res=0 errno=0 [ 86.495969][ T55] cfg80211: failed to load regulatory.db [ 86.683263][ T5332] UDC core: USB Raw Gadget: couldn't find an available UDC or it's busy [ 86.703640][ T5332] misc raw-gadget: fail, usb_gadget_register_driver returned -16 [ 86.829549][ T5330] loop0: detected capacity change from 2048 to 64 [ 86.883250][ T5329] ================================================================== [ 86.886703][ T5329] BUG: KASAN: slab-out-of-bounds in udf_write_aext+0x69d/0x7b0 [ 86.890330][ T5329] Write of size 4 at addr ffff88803fac91d8 by task syz.0.0/5329 [ 86.893570][ T5329] [ 86.894632][ T5329] CPU: 0 UID: 0 PID: 5329 Comm: syz.0.0 Not tainted syzkaller #0 PREEMPT(full) [ 86.894647][ T5329] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014 [ 86.894653][ T5329] Call Trace: [ 86.894660][ T5329] [ 86.894667][ T5329] dump_stack_lvl+0x189/0x250 [ 86.894683][ T5329] ? __virt_addr_valid+0x1c8/0x5c0 [ 86.894697][ T5329] ? rcu_is_watching+0x15/0xb0 [ 86.894709][ T5329] ? __pfx_dump_stack_lvl+0x10/0x10 [ 86.894721][ T5329] ? rcu_is_watching+0x15/0xb0 [ 86.894732][ T5329] ? lock_release+0x4b/0x3e0 [ 86.894742][ T5329] ? _raw_spin_lock_irqsave+0xb3/0xf0 [ 86.894787][ T5329] ? __virt_addr_valid+0x1c8/0x5c0 [ 86.894802][ T5329] ? __virt_addr_valid+0x4a5/0x5c0 [ 86.894815][ T5329] print_report+0xca/0x240 [ 86.894827][ T5329] ? udf_write_aext+0x69d/0x7b0 [ 86.894836][ T5329] kasan_report+0x118/0x150 [ 86.894851][ T5329] ? udf_write_aext+0x69d/0x7b0 [ 86.894861][ T5329] udf_write_aext+0x69d/0x7b0 [ 86.894877][ T5329] __udf_add_aext+0x2b9/0x6d0 [ 86.894894][ T5329] udf_free_blocks+0x1466/0x17f0 [ 86.894911][ T5329] ? reacquire_held_locks+0x127/0x1d0 [ 86.894922][ T5329] ? __mark_inode_dirty+0x4cc/0xe10 [ 86.894933][ T5329] ? __pfx_udf_free_blocks+0x10/0x10 [ 86.894948][ T5329] ? rcu_is_watching+0x15/0xb0 [ 86.894959][ T5329] ? __mark_inode_dirty+0x3d2/0xe10 [ 86.894969][ T5329] ? rcu_irq_exit_check_preempt+0x200/0x210 [ 86.894980][ T5329] ? __mark_inode_dirty+0x3d2/0xe10 [ 86.894990][ T5329] extent_trunc+0x35c/0x450 [ 86.895005][ T5329] ? __pfx_extent_trunc+0x10/0x10 [ 86.895019][ T5329] udf_truncate_extents+0x5b0/0xec0 [ 86.895035][ T5329] ? __pfx_udf_truncate_extents+0x10/0x10 [ 86.895049][ T5329] ? do_raw_spin_unlock+0x4d/0x240 [ 86.895058][ T5329] udf_setsize+0x972/0x1000 [ 86.895067][ T5329] ? udf_setattr+0x385/0x5a0 [ 86.895076][ T5329] ? __pfx_udf_setsize+0x10/0x10 [ 86.895085][ T5329] ? down_write+0x162/0x1f0 [ 86.895096][ T5329] ? __pfx_down_write+0x10/0x10 [ 86.895107][ T5329] ? __pfx_current_time+0x10/0x10 [ 86.895123][ T5329] udf_setattr+0x3a1/0x5a0 [ 86.895136][ T5329] ? __pfx_udf_setattr+0x10/0x10 [ 86.895149][ T5329] notify_change+0xc17/0xf40 [ 86.895161][ T5329] do_truncate+0x1a4/0x220 [ 86.895175][ T5329] ? __pfx_do_truncate+0x10/0x10 [ 86.895185][ T5329] ? apparmor_path_truncate+0x238/0x2d0 [ 86.895205][ T5329] vfs_truncate+0x493/0x520 [ 86.895220][ T5329] ? __pfx_vfs_truncate+0x10/0x10 [ 86.895235][ T5329] do_sys_truncate+0xdb/0x190 [ 86.895248][ T5329] ? __pfx_do_sys_truncate+0x10/0x10 [ 86.895260][ T5329] __x64_sys_truncate+0x5b/0x70 [ 86.895269][ T5329] do_syscall_64+0xfa/0xfa0 [ 86.895281][ T5329] ? lockdep_hardirqs_on+0x9c/0x150 [ 86.895291][ T5329] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 86.895302][ T5329] ? clear_bhb_loop+0x60/0xb0 [ 86.895313][ T5329] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 86.895324][ T5329] RIP: 0033:0x7f7944f8eec9 [ 86.895335][ T5329] Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 a8 ff ff ff f7 d8 64 89 01 48 [ 86.895344][ T5329] RSP: 002b:00007f7945d60038 EFLAGS: 00000246 ORIG_RAX: 000000000000004c [ 86.895356][ T5329] RAX: ffffffffffffffda RBX: 00007f79451e5fa0 RCX: 00007f7944f8eec9 [ 86.895361][ T5329] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 00002000000013c0 [ 86.895365][ T5329] RBP: 00007f7945011f91 R08: 0000000000000000 R09: 0000000000000000 [ 86.895368][ T5329] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 86.895372][ T5329] R13: 00007f79451e6038 R14: 00007f79451e5fa0 R15: 00007ffd32a11238 [ 86.895379][ T5329] [ 86.895382][ T5329] [ 87.049981][ T5329] Allocated by task 5329: [ 87.051829][ T5329] kasan_save_track+0x3e/0x80 [ 87.053888][ T5329] __kasan_kmalloc+0x93/0xb0 [ 87.055925][ T5329] __kmalloc_noprof+0x411/0x7f0 [ 87.058010][ T5329] __udf_iget+0xc66/0x3ae0 [ 87.059938][ T5329] udf_fill_partdesc_info+0x773/0x1320 [ 87.062173][ T5329] udf_process_sequence+0x111c/0x47e0 [ 87.064447][ T5329] udf_check_anchor_block+0x28e/0x550 [ 87.066731][ T5329] udf_load_vrs+0x96d/0xf20 [ 87.068652][ T5329] udf_fill_super+0x5ad/0x17a0 [ 87.070637][ T5329] get_tree_bdev_flags+0x40b/0x4d0 [ 87.072811][ T5329] vfs_get_tree+0x8f/0x2b0 [ 87.074618][ T5329] do_new_mount+0x302/0xa10 [ 87.076454][ T5329] __se_sys_mount+0x313/0x410 [ 87.078626][ T5329] do_syscall_64+0xfa/0xfa0 [ 87.080694][ T5329] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 87.083028][ T5329] [ 87.083908][ T5329] The buggy address belongs to the object at ffff88803fac9000 [ 87.083908][ T5329] which belongs to the cache kmalloc-512 of size 512 [ 87.089639][ T5329] The buggy address is located 0 bytes to the right of [ 87.089639][ T5329] allocated 472-byte region [ffff88803fac9000, ffff88803fac91d8) [ 87.095636][ T5329] [ 87.096699][ T5329] The buggy address belongs to the physical page: [ 87.099166][ T5329] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x3fac8 [ 87.102750][ T5329] head: order:1 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0 [ 87.106315][ T5329] anon flags: 0x4fff00000000040(head|node=1|zone=1|lastcpupid=0x7ff) [ 87.109718][ T5329] page_type: f5(slab) [ 87.111475][ T5329] raw: 04fff00000000040 ffff88801a441c80 0000000000000000 0000000000000001 [ 87.115045][ T5329] raw: 0000000000000000 0000000000080008 00000000f5000000 0000000000000000 [ 87.118568][ T5329] head: 04fff00000000040 ffff88801a441c80 0000000000000000 0000000000000001 [ 87.122330][ T5329] head: 0000000000000000 0000000000080008 00000000f5000000 0000000000000000 [ 87.125988][ T5329] head: 04fff00000000001 ffffea0000feb201 00000000ffffffff 00000000ffffffff [ 87.129772][ T5329] head: ffffffffffffffff 0000000000000000 00000000ffffffff 0000000000000002 [ 87.133200][ T5329] page dumped because: kasan: bad access detected [ 87.135904][ T5329] page_owner tracks the page as allocated [ 87.138275][ T5329] page last allocated via order 1, migratetype Unmovable, gfp_mask 0xd20c0(__GFP_IO|__GFP_FS|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC), pid 5306, tgid 5306 (syz-executor), ts 82017752838, free_ts 62120536902 [ 87.147107][ T5329] post_alloc_hook+0x240/0x2a0 [ 87.149158][ T5329] get_page_from_freelist+0x2365/0x2440 [ 87.151598][ T5329] __alloc_frozen_pages_noprof+0x181/0x370 [ 87.154166][ T5329] alloc_pages_mpol+0x232/0x4a0 [ 87.156590][ T5329] allocate_slab+0x96/0x3a0 [ 87.158592][ T5329] ___slab_alloc+0xe94/0x18a0 [ 87.160591][ T5329] __slab_alloc+0x65/0x100 [ 87.162323][ T5329] __kmalloc_cache_noprof+0x411/0x6f0 [ 87.164118][ T5329] __ipv6_dev_mc_inc+0x44f/0xa50 [ 87.166091][ T5329] ipv6_add_dev+0xe54/0x1370 [ 87.167964][ T5329] addrconf_notify+0x794/0x1010 [ 87.170106][ T5329] notifier_call_chain+0x1b6/0x3e0 [ 87.172387][ T5329] register_netdevice+0x1608/0x1ae0 [ 87.174603][ T5329] tun_set_iff+0x844/0xf00 [ 87.176528][ T5329] __tun_chr_ioctl+0x788/0x1df0 [ 87.178598][ T5329] __se_sys_ioctl+0xfc/0x170 [ 87.180713][ T5329] page last free pid 5224 tgid 5224 stack trace: [ 87.183769][ T5329] __free_frozen_pages+0xbc4/0xd30 [ 87.186109][ T5329] __put_partials+0x146/0x170 [ 87.188159][ T5329] put_cpu_partial+0x1f2/0x2e0 [ 87.190548][ T5329] __slab_free+0x2b9/0x390 [ 87.192582][ T5329] qlist_free_all+0x97/0x140 [ 87.194612][ T5329] kasan_quarantine_reduce+0x148/0x160 [ 87.196968][ T5329] __kasan_slab_alloc+0x22/0x80 [ 87.199149][ T5329] __kmalloc_noprof+0x3c3/0x7f0 [ 87.201350][ T5329] tomoyo_realpath_from_path+0xe3/0x5d0 [ 87.203799][ T5329] tomoyo_path_perm+0x213/0x4b0 [ 87.205992][ T5329] security_inode_getattr+0x12f/0x330 [ 87.208378][ T5329] __x64_sys_newfstat+0xfc/0x200 [ 87.210653][ T5329] do_syscall_64+0xfa/0xfa0 [ 87.212668][ T5329] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 87.215317][ T5329] [ 87.216395][ T5329] Memory state around the buggy address: [ 87.218781][ T5329] ffff88803fac9080: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 87.222043][ T5329] ffff88803fac9100: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 87.225178][ T5329] >ffff88803fac9180: 00 00 00 00 00 00 00 00 00 00 00 fc fc fc fc fc [ 87.228375][ T5329] ^ [ 87.231141][ T5329] ffff88803fac9200: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 87.234390][ T5329] ffff88803fac9280: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 87.237824][ T5329] ================================================================== [ 87.250200][ T5329] Kernel panic - not syncing: KASAN: panic_on_warn set ... [ 87.253304][ T5329] CPU: 0 UID: 0 PID: 5329 Comm: syz.0.0 Not tainted syzkaller #0 PREEMPT(full) [ 87.257028][ T5329] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014 [ 87.261401][ T5329] Call Trace: [ 87.262746][ T5329] [ 87.264031][ T5329] dump_stack_lvl+0x99/0x250 [ 87.266091][ T5329] ? __asan_memcpy+0x40/0x70 [ 87.268072][ T5329] ? __pfx_dump_stack_lvl+0x10/0x10 [ 87.270407][ T5329] ? __pfx__printk+0x10/0x10 [ 87.272443][ T5329] vpanic+0x237/0x6d0 [ 87.274231][ T5329] ? __pfx_vpanic+0x10/0x10 [ 87.276254][ T5329] ? preempt_schedule+0xae/0xc0 [ 87.278398][ T5329] ? __pfx_preempt_schedule+0x10/0x10 [ 87.280973][ T5329] panic+0xb9/0xc0 [ 87.282748][ T5329] ? __pfx_panic+0x10/0x10 [ 87.284773][ T5329] ? _raw_spin_unlock_irqrestore+0xfd/0x110 [ 87.287204][ T5329] ? is_module_address+0x17/0xf0 [ 87.289274][ T5329] ? udf_write_aext+0x69d/0x7b0 [ 87.291441][ T5329] check_panic_on_warn+0x89/0xb0 [ 87.293707][ T5329] ? udf_write_aext+0x69d/0x7b0 [ 87.295805][ T5329] end_report+0x78/0x160 [ 87.297626][ T5329] kasan_report+0x129/0x150 [ 87.299599][ T5329] ? udf_write_aext+0x69d/0x7b0 [ 87.301700][ T5329] udf_write_aext+0x69d/0x7b0 [ 87.303785][ T5329] __udf_add_aext+0x2b9/0x6d0 [ 87.305810][ T5329] udf_free_blocks+0x1466/0x17f0 [ 87.307926][ T5329] ? reacquire_held_locks+0x127/0x1d0 [ 87.310307][ T5329] ? __mark_inode_dirty+0x4cc/0xe10 [ 87.312560][ T5329] ? __pfx_udf_free_blocks+0x10/0x10 [ 87.314974][ T5329] ? rcu_is_watching+0x15/0xb0 [ 87.317216][ T5329] ? __mark_inode_dirty+0x3d2/0xe10 [ 87.319564][ T5329] ? rcu_irq_exit_check_preempt+0x200/0x210 [ 87.322264][ T5329] ? __mark_inode_dirty+0x3d2/0xe10 [ 87.324592][ T5329] extent_trunc+0x35c/0x450 [ 87.326656][ T5329] ? __pfx_extent_trunc+0x10/0x10 [ 87.328919][ T5329] udf_truncate_extents+0x5b0/0xec0 [ 87.331203][ T5329] ? __pfx_udf_truncate_extents+0x10/0x10 [ 87.333539][ T5329] ? do_raw_spin_unlock+0x4d/0x240 [ 87.335569][ T5329] udf_setsize+0x972/0x1000 [ 87.337425][ T5329] ? udf_setattr+0x385/0x5a0 [ 87.339371][ T5329] ? __pfx_udf_setsize+0x10/0x10 [ 87.341606][ T5329] ? down_write+0x162/0x1f0 [ 87.343612][ T5329] ? __pfx_down_write+0x10/0x10 [ 87.345799][ T5329] ? __pfx_current_time+0x10/0x10 [ 87.348077][ T5329] udf_setattr+0x3a1/0x5a0 [ 87.350123][ T5329] ? __pfx_udf_setattr+0x10/0x10 [ 87.352366][ T5329] notify_change+0xc17/0xf40 [ 87.354506][ T5329] do_truncate+0x1a4/0x220 [ 87.356448][ T5329] ? __pfx_do_truncate+0x10/0x10 [ 87.358595][ T5329] ? apparmor_path_truncate+0x238/0x2d0 [ 87.361018][ T5329] vfs_truncate+0x493/0x520 [ 87.362982][ T5329] ? __pfx_vfs_truncate+0x10/0x10 [ 87.365208][ T5329] do_sys_truncate+0xdb/0x190 [ 87.367308][ T5329] ? __pfx_do_sys_truncate+0x10/0x10 [ 87.369731][ T5329] __x64_sys_truncate+0x5b/0x70 [ 87.371903][ T5329] do_syscall_64+0xfa/0xfa0 [ 87.373943][ T5329] ? lockdep_hardirqs_on+0x9c/0x150 [ 87.376175][ T5329] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 87.378874][ T5329] ? clear_bhb_loop+0x60/0xb0 [ 87.381014][ T5329] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 87.383599][ T5329] RIP: 0033:0x7f7944f8eec9 [ 87.385557][ T5329] Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 a8 ff ff ff f7 d8 64 89 01 48 [ 87.393646][ T5329] RSP: 002b:00007f7945d60038 EFLAGS: 00000246 ORIG_RAX: 000000000000004c [ 87.397159][ T5329] RAX: ffffffffffffffda RBX: 00007f79451e5fa0 RCX: 00007f7944f8eec9 [ 87.400455][ T5329] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 00002000000013c0 [ 87.403743][ T5329] RBP: 00007f7945011f91 R08: 0000000000000000 R09: 0000000000000000 [ 87.406997][ T5329] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 87.410342][ T5329] R13: 00007f79451e6038 R14: 00007f79451e5fa0 R15: 00007ffd32a11238 [ 87.413688][ T5329] [ 87.415316][ T5329] Kernel Offset: disabled [ 87.417178][ T5329] Rebooting in 86400 seconds..