random: sshd: uninitialized urandom read (32 bytes read, 36 bits of entropy available) random: sshd: uninitialized urandom read (32 bytes read, 104 bits of entropy available) random: sshd: uninitialized urandom read (32 bytes read, 108 bits of entropy available) random: sshd: uninitialized urandom read (32 bytes read, 116 bits of entropy available) ================================================================== BUG: KASAN: slab-out-of-bounds in list_empty include/linux/list.h:189 [inline] BUG: KASAN: slab-out-of-bounds in sg_remove_request+0xf9/0x110 drivers/scsi/sg.c:2120 Read of size 8 at addr ffff8801d4101140 by task syzkaller281619/3666 CPU: 0 PID: 3666 Comm: syzkaller281619 Not tainted 4.4.119-g855ea74 #27 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 0000000000000000 d1340e2c3a9c9315 ffff8801cb637ab0 ffffffff81d0402d ffffea0007504040 ffff8801d4101140 0000000000000000 ffff8801d4101140 ffff8800afdca338 ffff8801cb637ae8 ffffffff814fe103 ffff8801d4101140 Call Trace: [] __dump_stack lib/dump_stack.c:15 [inline] [] dump_stack+0xc1/0x124 lib/dump_stack.c:51 [] print_address_description+0x73/0x260 mm/kasan/report.c:252 [] kasan_report_error mm/kasan/report.c:351 [inline] [] kasan_report+0x285/0x370 mm/kasan/report.c:408 [] __asan_report_load8_noabort+0x14/0x20 mm/kasan/report.c:429 [] list_empty include/linux/list.h:189 [inline] [] sg_remove_request+0xf9/0x110 drivers/scsi/sg.c:2120 [] sg_finish_rem_req+0x295/0x340 drivers/scsi/sg.c:1837 [] sg_read+0xa1b/0x1490 drivers/scsi/sg.c:537 [] __vfs_read+0x103/0x440 fs/read_write.c:432 [] vfs_read+0x123/0x3a0 fs/read_write.c:454 [] SYSC_read fs/read_write.c:569 [inline] [] SyS_read+0xd9/0x1b0 fs/read_write.c:562 [] entry_SYSCALL_64_fastpath+0x1c/0x98 Allocated by task 0: (stack is not available) Freed by task 0: (stack is not available) The buggy address belongs to the object at ffff8801d4101100 which belongs to the cache fasync_cache of size 96 The buggy address is located 64 bytes inside of 96-byte region [ffff8801d4101100, ffff8801d4101160) The buggy address belongs to the page: BUG: unable to handle kernel paging request at fffffffddf96bc00 IP: [] cpuacct_charge+0x155/0x390 kernel/sched/cpuacct.c:247 PGD 420f067 PUD 0 Oops: 0000 [#1] PREEMPT SMP KASAN Dumping ftrace buffer: (ftrace buffer empty) Modules linked in: CPU: 1 PID: 3643 Comm: getty Not tainted 4.4.119-g855ea74 #27 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 task: ffff8800b0b76000 task.stack: ffff8801cc800000 RIP: 0010:[] [] cpuacct_charge+0x155/0x390 kernel/sched/cpuacct.c:247 RSP: 0018:ffff8801cc8078e0 EFLAGS: 00010046 RAX: 1ffffffff0855007 RBX: 0000000000018528 RCX: ffffffff847eb980 RDX: fffffbffbbf2d780 RSI: fffffffddf96bc00 RDI: ffffffff842a8038 RBP: ffff8801cc807928 R08: 0000000000000001 R09: 0000000000000001 R10: 0000000000000000 R11: 1ffff10039900ee8 R12: ffffffff842a7f60 R13: dffffc0000000000 R14: 0000000057453c13 R15: ffffffffcb630050 FS: 0000000000000000(0000) GS:ffff8801db300000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: fffffffddf96bc00 CR3: 000000000420c000 CR4: 0000000000160670 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Stack: ffffffff8122b480 ffff8801cc807910 0000000000000046 0000000000000003 ffff8800b0f44860 ffffffff838444e0 0000000057453c13 ffff8800b0f448b0 ffff8800b0f44800 ffff8801cc807978 ffffffff811dcc77 ffff8801db21f4c0 Call Trace: [] update_curr+0x2c7/0x6c0 kernel/sched/fair.c:882 [] enqueue_entity kernel/sched/fair.c:3511 [inline] [] enqueue_task_fair+0x313/0x2940 kernel/sched/fair.c:4694 [] enqueue_task kernel/sched/core.c:856 [inline] [] activate_task+0x148/0x270 kernel/sched/core.c:872 [] ttwu_activate kernel/sched/core.c:1734 [inline] [] ttwu_do_activate.constprop.131+0xbf/0x1e0 kernel/sched/core.c:1787 [] ttwu_queue kernel/sched/core.c:1932 [inline] [] try_to_wake_up+0x68d/0xf60 kernel/sched/core.c:2066 [] wake_up_state+0x10/0x20 kernel/sched/core.c:2146 [] signal_wake_up_state+0x44/0x70 kernel/signal.c:659 [] signal_wake_up include/linux/sched.h:3319 [inline] [] complete_signal+0x2ed/0x700 kernel/signal.c:952 [] __send_signal+0x90f/0x1330 kernel/signal.c:1080 [] send_signal+0x4a/0xc0 kernel/signal.c:1096 [] __group_send_sig_info kernel/signal.c:1135 [inline] [] do_notify_parent+0x9dc/0xd70 kernel/signal.c:1665 [] exit_notify kernel/exit.c:612 [inline] [] do_exit+0x1f41/0x2a10 kernel/exit.c:776 [] do_group_exit+0x108/0x320 kernel/exit.c:885 [] SYSC_exit_group kernel/exit.c:896 [inline] [] SyS_exit_group+0x1d/0x20 kernel/exit.c:894 [] entry_SYSCALL_64_fastpath+0x1c/0x98 Code: 49 8d bc 24 d8 00 00 00 48 89 f8 48 c1 e8 03 42 80 3c 28 00 0f 85 9e 01 00 00 49 8b 9c 24 d8 00 00 00 80 3a 00 0f 85 0a 02 00 00 <4a> 03 1c f9 48 89 d8 48 c1 e8 03 42 80 3c 28 00 0f 85 cf 01 00 RIP [] cpuacct_charge+0x155/0x390 kernel/sched/cpuacct.c:247 RSP CR2: fffffffddf96bc00 ---[ end trace 5b7a272cbadb080a ]---