sr 1:0:0:0: [sr0] tag#0 unaligned transfer sr 1:0:0:0: [sr0] tag#0 unaligned transfer sr 1:0:0:0: [sr0] tag#0 unaligned transfer ------------[ cut here ]------------ kernfs_put: syz2/memory.events: released with incorrect active_ref 0 WARNING: CPU: 1 PID: 84 at fs/kernfs/dir.c:531 kernfs_put.part.0+0x433/0x540 Modules linked in: CPU: 1 PID: 84 Comm: kworker/1:3 Not tainted 5.19.0-rc4-next-20220701 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.14.0-0-g155821a1990b-prebuilt.qemu.org 04/01/2014 Workqueue: events kernfs_notify_workfn RIP: 0010:kernfs_put.part.0+0x433/0x540 Code: 03 80 3c 18 00 0f 85 ea 00 00 00 4d 8b 7d 38 e8 53 42 a7 ff 48 8b 14 24 44 89 f1 4c 89 fe 48 c7 c7 a0 58 72 84 e8 97 1c 6c 02 <0f> 0b e9 b9 fc ff ff 48 89 ef e8 8e b6 d9 ff e9 c1 fd ff ff e8 84 RSP: 0018:ffff88800fa4fbd8 EFLAGS: 00010286 RAX: 0000000000000000 RBX: dffffc0000000000 RCX: 0000000000000000 RDX: ffff88800fa61ac0 RSI: ffffffff812b6848 RDI: ffffed1001f49f6d RBP: ffff88801b84b2f0 R08: 0000000000000005 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000001 R12: ffff88801b84b2b8 R13: ffff88800ccdd9f8 R14: 0000000000000000 R15: ffff88800cc41fa0 FS: 0000000000000000(0000) GS:ffff88806cf00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000055c832faf514 CR3: 000000003d1ce000 CR4: 0000000000350ee0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff4ff0 DR7: 0000000000000400 Call Trace: kernfs_put+0x42/0x50 kernfs_notify_workfn+0x417/0x560 process_one_work+0xa0f/0x1690 worker_thread+0x637/0x1250 kthread+0x2ed/0x3a0 ret_from_fork+0x22/0x30 irq event stamp: 347483 hardirqs last enabled at (347495): [] __up_console_sem+0x78/0x80 hardirqs last disabled at (347506): [] __up_console_sem+0x5d/0x80 softirqs last enabled at (347042): [] __irq_exit_rcu+0x113/0x170 softirqs last disabled at (346587): [] __irq_exit_rcu+0x113/0x170 ---[ end trace 0000000000000000 ]--- ================================================================== BUG: KASAN: use-after-free in llist_del_first+0x89/0xa0 Read of size 8 at addr ffff88801b84b338 by task kworker/1:3/84 CPU: 1 PID: 84 Comm: kworker/1:3 Tainted: G W 5.19.0-rc4-next-20220701 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.14.0-0-g155821a1990b-prebuilt.qemu.org 04/01/2014 Workqueue: events kernfs_notify_workfn Call Trace: dump_stack_lvl+0x8b/0xb3 print_report.cold+0x5e/0x5e1 kasan_report+0xb1/0x1b0 llist_del_first+0x89/0xa0 kernfs_notify_workfn+0x78/0x560 process_one_work+0xa0f/0x1690 worker_thread+0x637/0x1250 kthread+0x2ed/0x3a0 ret_from_fork+0x22/0x30 Allocated by task 300: kasan_save_stack+0x1e/0x40 __kasan_slab_alloc+0x66/0x80 kmem_cache_alloc+0x1b1/0x490 __kernfs_new_node+0xd4/0x8b0 kernfs_new_node+0x93/0x120 __kernfs_create_file+0x51/0x350 cgroup_addrm_files+0x3e2/0x9d0 css_populate_dir+0x19b/0x450 cgroup_apply_control_enable+0x3ae/0xa40 cgroup_mkdir+0x824/0x11f0 kernfs_iop_mkdir+0x149/0x1d0 vfs_mkdir+0x417/0x6a0 do_mkdirat+0x17b/0x2e0 __x64_sys_mkdir+0xf2/0x140 do_syscall_64+0x3b/0x90 entry_SYSCALL_64_after_hwframe+0x46/0xb0 Freed by task 84: kasan_save_stack+0x1e/0x40 kasan_set_track+0x21/0x30 kasan_set_free_info+0x20/0x30 __kasan_slab_free+0x108/0x190 kmem_cache_free+0xfb/0x600 kernfs_put.part.0+0x2c7/0x540 kernfs_put+0x42/0x50 kernfs_notify_workfn+0x417/0x560 process_one_work+0xa0f/0x1690 worker_thread+0x637/0x1250 kthread+0x2ed/0x3a0 ret_from_fork+0x22/0x30 The buggy address belongs to the object at ffff88801b84b2b8 which belongs to the cache kernfs_node_cache of size 168 The buggy address is located 128 bytes inside of 168-byte region [ffff88801b84b2b8, ffff88801b84b360) The buggy address belongs to the physical page: page:000000000d49a101 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1b84b flags: 0x100000000000200(slab|node=0|zone=1) raw: 0100000000000200 0000000000000000 dead000000000122 ffff8880080718c0 raw: 0000000000000000 0000000000110011 00000001ffffffff 0000000000000000 page dumped because: kasan: bad access detected Memory state around the buggy address: ffff88801b84b200: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 fc ffff88801b84b280: fc fc fc fc fc fc fc fa fb fb fb fb fb fb fb fb >ffff88801b84b300: fb fb fb fb fb fb fb fb fb fb fb fb fc fc fc fc ^ ffff88801b84b380: fc fc fc fc 00 00 00 00 00 00 00 00 00 00 00 00 ffff88801b84b400: 00 00 00 00 00 00 00 00 00 fc fc fc fc fc fc fc ================================================================== sr 1:0:0:0: [sr0] tag#0 unaligned transfer sr 1:0:0:0: [sr0] tag#0 unaligned transfer sr 1:0:0:0: [sr0] tag#0 unaligned transfer sr 1:0:0:0: [sr0] tag#0 unaligned transfer sr 1:0:0:0: [sr0] tag#0 unaligned transfer sr 1:0:0:0: [sr0] tag#0 unaligned transfer sr 1:0:0:0: [sr0] tag#0 unaligned transfer sr 1:0:0:0: [sr0] tag#0 unaligned transfer sr 1:0:0:0: [sr0] tag#0 unaligned transfer sr 1:0:0:0: [sr0] tag#0 unaligned transfer sr 1:0:0:0: [sr0] tag#0 unaligned transfer sr 1:0:0:0: [sr0] tag#0 unaligned transfer sr 1:0:0:0: [sr0] tag#0 unaligned transfer sr 1:0:0:0: [sr0] tag#0 unaligned transfer sr 1:0:0:0: [sr0] tag#0 unaligned transfer sr 1:0:0:0: [sr0] tag#0 unaligned transfer sr 1:0:0:0: [sr0] tag#0 unaligned transfer sr 1:0:0:0: [sr0] tag#0 unaligned transfer sr 1:0:0:0: [sr0] tag#0 unaligned transfer sr 1:0:0:0: [sr0] tag#0 unaligned transfer sr 1:0:0:0: [sr0] tag#0 unaligned transfer sr 1:0:0:0: [sr0] tag#0 unaligned transfer sr 1:0:0:0: [sr0] tag#0 unaligned transfer sr 1:0:0:0: [sr0] tag#0 unaligned transfer sr 1:0:0:0: [sr0] tag#0 unaligned transfer sr 1:0:0:0: [sr0] tag#0 unaligned transfer sr 1:0:0:0: [sr0] tag#0 unaligned transfer sr 1:0:0:0: [sr0] tag#0 unaligned transfer sr 1:0:0:0: [sr0] tag#0 unaligned transfer sr 1:0:0:0: [sr0] tag#0 unaligned transfer sr 1:0:0:0: [sr0] tag#0 unaligned transfer sr 1:0:0:0: [sr0] tag#0 unaligned transfer sr 1:0:0:0: [sr0] tag#0 unaligned transfer sr 1:0:0:0: [sr0] tag#0 unaligned transfer sr 1:0:0:0: [sr0] tag#0 unaligned transfer sr 1:0:0:0: [sr0] tag#0 unaligned transfer sr 1:0:0:0: [sr0] tag#0 unaligned transfer sr 1:0:0:0: [sr0] tag#0 unaligned transfer sr 1:0:0:0: [sr0] tag#0 unaligned transfer sr 1:0:0:0: [sr0] tag#0 unaligned transfer sr 1:0:0:0: [sr0] tag#0 unaligned transfer sr 1:0:0:0: [sr0] tag#0 unaligned transfer sr 1:0:0:0: [sr0] tag#0 unaligned transfer sr 1:0:0:0: [sr0] tag#0 unaligned transfer sr 1:0:0:0: [sr0] tag#0 unaligned transfer sr 1:0:0:0: [sr0] tag#0 unaligned transfer sr 1:0:0:0: [sr0] tag#0 unaligned transfer sr 1:0:0:0: [sr0] tag#0 unaligned transfer sr 1:0:0:0: [sr0] tag#0 unaligned transfer sr 1:0:0:0: [sr0] tag#0 unaligned transfer sr 1:0:0:0: [sr0] tag#0 unaligned transfer sr 1:0:0:0: [sr0] tag#0 unaligned transfer ata2.00: qc timeout (cmd 0xa0) general protection fault, probably for non-canonical address 0x2ffebde00000008: 0000 [#1] PREEMPT SMP KASAN NOPTI CPU: 0 PID: 189 Comm: in:imklog Tainted: G B W 5.19.0-rc4-next-20220701 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.14.0-0-g155821a1990b-prebuilt.qemu.org 04/01/2014 RIP: 0010:qlist_free_all+0xaf/0x190 Code: 80 4c 01 c2 0f 82 f0 00 00 00 48 c7 c0 00 00 00 80 48 2b 05 53 36 7c 03 48 01 d0 48 c1 e8 0c 48 c1 e0 06 48 03 05 31 36 7c 03 <48> 8b 48 08 48 89 c2 f6 c1 01 0f 85 b6 00 00 00 0f 1f 44 00 00 48 RSP: 0018:ffff88801b73f9d0 EFLAGS: 00010207 RAX: 02ffebde00000000 RBX: c000000000000000 RCX: 1ffffffff0b1d44d RDX: c000000080000000 RSI: 0000000000000008 RDI: ffffffff81764e81 RBP: 0000000000000000 R08: c000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000001 R12: dffffc0000000000 R13: ffff88801b73fa10 R14: 0000000000000000 R15: ffff88801b367c59 FS: 00007f9be22af700(0000) GS:ffff88806ce00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fcb81381000 CR3: 00000000176b0000 CR4: 0000000000350ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff4ff0 DR7: 0000000000000400 Call Trace: kasan_quarantine_reduce+0x180/0x200 __kasan_slab_alloc+0x78/0x80 kmem_cache_alloc_trace+0x1a1/0x3d0 syslog_print+0xc7/0x590 do_syslog.part.0+0x272/0x6a0 do_syslog+0x49/0x60 kmsg_read+0x8a/0xb0 proc_reg_read+0x11c/0x300 vfs_read+0x1ea/0x5d0 ksys_read+0x127/0x250 do_syscall_64+0x3b/0x90 entry_SYSCALL_64_after_hwframe+0x46/0xb0 RIP: 0033:0x7f9be2cf208c Code: ec 28 48 89 54 24 18 48 89 74 24 10 89 7c 24 08 e8 89 fc ff ff 48 8b 54 24 18 48 8b 74 24 10 41 89 c0 8b 7c 24 08 31 c0 0f 05 <48> 3d 00 f0 ff ff 77 34 44 89 c7 48 89 44 24 08 e8 bf fc ff ff 48 RSP: 002b:00007f9be228e4d0 EFLAGS: 00000246 ORIG_RAX: 0000000000000000 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f9be2cf208c RDX: 0000000000001fa0 RSI: 00007f9be228ed00 RDI: 0000000000000005 RBP: 00005599dfd064c0 R08: 0000000000000000 R09: 00005599dfd02e88 R10: 0000000000000000 R11: 0000000000000246 R12: 00007f9be228ed00 R13: 0000000000001fa0 R14: 00007f9be228ed00 R15: 00007f9be228ed31 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:qlist_free_all+0xaf/0x190 Code: 80 4c 01 c2 0f 82 f0 00 00 00 48 c7 c0 00 00 00 80 48 2b 05 53 36 7c 03 48 01 d0 48 c1 e8 0c 48 c1 e0 06 48 03 05 31 36 7c 03 <48> 8b 48 08 48 89 c2 f6 c1 01 0f 85 b6 00 00 00 0f 1f 44 00 00 48 RSP: 0018:ffff88801b73f9d0 EFLAGS: 00010207 RAX: 02ffebde00000000 RBX: c000000000000000 RCX: 1ffffffff0b1d44d RDX: c000000080000000 RSI: 0000000000000008 RDI: ffffffff81764e81 RBP: 0000000000000000 R08: c000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000001 R12: dffffc0000000000 R13: ffff88801b73fa10 R14: 0000000000000000 R15: ffff88801b367c59 FS: 00007f9be22af700(0000) GS:ffff88806ce00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fcb81381000 CR3: 00000000176b0000 CR4: 0000000000350ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff4ff0 DR7: 0000000000000400 BUG: kernel NULL pointer dereference, address: 0000000000000018 #PF: supervisor read access in kernel mode #PF: error_code(0x0000) - not-present page PGD 0 P4D 0 Oops: 0000 [#2] PREEMPT SMP KASAN NOPTI CPU: 0 PID: 112 Comm: systemd-journal Tainted: G B D W 5.19.0-rc4-next-20220701 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.14.0-0-g155821a1990b-prebuilt.qemu.org 04/01/2014 RIP: 0010:qlist_free_all+0xd3/0x190 Code: 03 05 31 36 7c 03 48 8b 48 08 48 89 c2 f6 c1 01 0f 85 b6 00 00 00 0f 1f 44 00 00 48 8b 02 f6 c4 02 b8 00 00 00 00 48 0f 44 d0 <4c> 8b 72 18 e9 50 ff ff ff 49 83 7e 48 00 0f 85 68 ff ff ff 41 f7 RSP: 0018:ffff8880187474f0 EFLAGS: 00010246 RAX: 0000000000000000 RBX: ffff8880175cd783 RCX: 0000000000000000 RDX: 0000000000000000 RSI: ffffea00006e12c0 RDI: 0000000040000000 RBP: 0000000000000000 R08: ffff8880175cd783 R09: 000000008011000f R10: ffffea00006e12c0 R11: 0000000000000000 R12: dffffc0000000000 R13: ffff888018747530 R14: 0000000000000000 R15: ffff88801b84b3a0 FS: 00007f2501198900(0000) GS:ffff88806ce00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000000018 CR3: 000000000d3b6000 CR4: 0000000000350ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff4ff0 DR7: 0000000000000400 Call Trace: kasan_quarantine_reduce+0x180/0x200 __kasan_slab_alloc+0x78/0x80 __kmalloc+0x1be/0x440 __d_alloc+0x68e/0x990 d_alloc_parallel+0x10a/0x1c00 __lookup_slow+0x193/0x490 walk_component+0x411/0x6a0 link_path_walk.part.0+0x7f8/0xf80 path_openat+0x25d/0x2890 do_filp_open+0x1aa/0x400 do_sys_openat2+0x16d/0x4c0 __x64_sys_openat+0x13f/0x1f0 do_syscall_64+0x3b/0x90 entry_SYSCALL_64_after_hwframe+0x46/0xb0 RIP: 0033:0x7f2501a51c64 Code: 84 00 00 00 00 00 44 89 54 24 0c e8 36 61 f9 ff 44 8b 54 24 0c 44 89 e2 48 89 ee 41 89 c0 bf 9c ff ff ff b8 01 01 00 00 0f 05 <48> 3d 00 f0 ff ff 77 34 44 89 c7 89 44 24 0c e8 68 61 f9 ff 8b 44 RSP: 002b:00007ffc7cddca60 EFLAGS: 00000293 ORIG_RAX: 0000000000000101 RAX: ffffffffffffffda RBX: 0000555c557a0d60 RCX: 00007f2501a51c64 RDX: 0000000000080802 RSI: 0000555c557e2190 RDI: 00000000ffffff9c RBP: 0000555c557e2190 R08: 0000000000000000 R09: ffffffffffffff01 R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000080802 R13: 00000000fffffffa R14: 0000555c557e2840 R15: 0000000000000002 Modules linked in: CR2: 0000000000000018 ---[ end trace 0000000000000000 ]--- RIP: 0010:qlist_free_all+0xaf/0x190 Code: 80 4c 01 c2 0f 82 f0 00 00 00 48 c7 c0 00 00 00 80 48 2b 05 53 36 7c 03 48 01 d0 48 c1 e8 0c 48 c1 e0 06 48 03 05 31 36 7c 03 <48> 8b 48 08 48 89 c2 f6 c1 01 0f 85 b6 00 00 00 0f 1f 44 00 00 48 RSP: 0018:ffff88801b73f9d0 EFLAGS: 00010207 RAX: 02ffebde00000000 RBX: c000000000000000 RCX: 1ffffffff0b1d44d RDX: c000000080000000 RSI: 0000000000000008 RDI: ffffffff81764e81 RBP: 0000000000000000 R08: c000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000001 R12: dffffc0000000000 R13: ffff88801b73fa10 R14: 0000000000000000 R15: ffff88801b367c59 ata2: found unknown device (class 0) FS: 00007f2501198900(0000) GS:ffff88806ce00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000000018 CR3: 000000000d3b6000 CR4: 0000000000350ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff4ff0 DR7: 0000000000000400 blk_print_req_error: 108 callbacks suppressed I/O error, dev sr0, sector 0 op 0x0:(READ) flags 0x0 phys_seg 8 prio class 2 buffer_io_error: 190 callbacks suppressed Buffer I/O error on dev sr0, logical block 0, async page read Buffer I/O error on dev sr0, logical block 1, async page read Buffer I/O error on dev sr0, logical block 2, async page read Buffer I/O error on dev sr0, logical block 3, async page read Buffer I/O error on dev sr0, logical block 4, async page read Buffer I/O error on dev sr0, logical block 5, async page read Buffer I/O error on dev sr0, logical block 6, async page read Buffer I/O error on dev sr0, logical block 7, async page read systemd[1]: systemd-journald.service: Scheduled restart job, restart counter is at 1. ------------[ cut here ]------------ WARNING: CPU: 0 PID: 1 at fs/kernfs/dir.c:1333 kernfs_activate+0x1e0/0x240 Modules linked in: CPU: 0 PID: 1 Comm: systemd Tainted: G B D W 5.19.0-rc4-next-20220701 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.14.0-0-g155821a1990b-prebuilt.qemu.org 04/01/2014 RIP: 0010:kernfs_activate+0x1e0/0x240 Code: 00 00 00 10 e9 c8 fe ff ff e8 8c 05 a7 ff 48 8b 3c 24 48 83 c4 08 5b 5d 41 5c 41 5d 41 5e 41 5f e9 15 43 8a ff e8 70 05 a7 ff <0f> 0b eb a1 e8 67 05 a7 ff 0f 0b e9 44 ff ff ff 4c 89 ef e8 98 79 RSP: 0018:ffff8880081afd38 EFLAGS: 00010293 RAX: 0000000000000000 RBX: ffff88801b84b2bc RCX: 0000000000000000 RDX: ffff8880081a0000 RSI: ffffffff819d66c0 RDI: 0000000000000005 RBP: ffff88801b84b2b8 R08: 0000000000000005 R09: 0000000080000001 R10: 00000000ffff8880 R11: 0000000000000001 R12: dffffc0000000000 R13: ffff88801b84b350 R14: ffff88800df2e828 R15: 00000000ffff8880 FS: 00007f2563961900(0000) GS:ffff88806ce00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f5f8fd58421 CR3: 0000000008f1e000 CR4: 0000000000350ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff4ff0 DR7: 0000000000000400 Call Trace: cgroup_mkdir+0x86f/0x11f0 kernfs_iop_mkdir+0x149/0x1d0 vfs_mkdir+0x417/0x6a0 do_mkdirat+0x17b/0x2e0 __x64_sys_mkdir+0xf2/0x140 do_syscall_64+0x3b/0x90 entry_SYSCALL_64_after_hwframe+0x46/0xb0 RIP: 0033:0x7f256412eb07 Code: 1f 40 00 48 8b 05 89 f3 0c 00 64 c7 00 5f 00 00 00 b8 ff ff ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 b8 53 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 59 f3 0c 00 f7 d8 64 89 01 48 RSP: 002b:00007fff342191f8 EFLAGS: 00000206 ORIG_RAX: 0000000000000053 RAX: ffffffffffffffda RBX: 0000562f7d9d3f30 RCX: 00007f256412eb07 RDX: 00007fff34219090 RSI: 00000000000001ed RDI: 0000562f7d9c6260 RBP: 00007f256451f351 R08: 0000000000000001 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000206 R12: 0000000000000000 R13: 0000562f7d9d3f30 R14: 0000000000000000 R15: 0000562f7d91ea30 irq event stamp: 7142858 hardirqs last enabled at (7142857): [] _raw_write_unlock_irq+0x1f/0x40 hardirqs last disabled at (7142858): [] __schedule+0x11d9/0x24a0 softirqs last enabled at (7142176): [] __irq_exit_rcu+0x113/0x170 softirqs last disabled at (7142167): [] __irq_exit_rcu+0x113/0x170 ---[ end trace 0000000000000000 ]--- systemd[1]: Stopping Flush Journal to Persistent Storage... systemd[1]: systemd-journal-flush.service: Failed to kill control group /system.slice/systemd-journal-flush.service, ignoring: Input/output error systemd[1]: systemd-journal-flush.service: Failed to kill control group /system.slice/systemd-journal-flush.service, ignoring: Input/output error systemd[1]: systemd-journal-flush.service: Failed to kill control group /system.slice/systemd-journal-flush.service, ignoring: Input/output error systemd[1]: systemd-journal-flush.service: Failed to kill control group /system.slice/systemd-journal-flush.service, ignoring: Input/output error systemd[1]: systemd-journal-flush.service: Succeeded. ---------------- Code disassembly (best guess), 1 bytes skipped: 0: 4c 01 c2 add %r8,%rdx 3: 0f 82 f0 00 00 00 jb 0xf9 9: 48 c7 c0 00 00 00 80 mov $0xffffffff80000000,%rax 10: 48 2b 05 53 36 7c 03 sub 0x37c3653(%rip),%rax # 0x37c366a 17: 48 01 d0 add %rdx,%rax 1a: 48 c1 e8 0c shr $0xc,%rax 1e: 48 c1 e0 06 shl $0x6,%rax 22: 48 03 05 31 36 7c 03 add 0x37c3631(%rip),%rax # 0x37c365a * 29: 48 8b 48 08 mov 0x8(%rax),%rcx <-- trapping instruction 2d: 48 89 c2 mov %rax,%rdx 30: f6 c1 01 test $0x1,%cl 33: 0f 85 b6 00 00 00 jne 0xef 39: 0f 1f 44 00 00 nopl 0x0(%rax,%rax,1) 3e: 48 rex.W