KASAN: use-after-free Read in _

Kernel	Title	Repro	Cause bisect	Fix bisect	Count	Last	Reported	Patched	Status
android-54	KASAN: use-after-free Read in __schedule				3	1480d	1507d	0/2	auto-closed as invalid on 2020/07/28 03:17
upstream	KASAN: use-after-free Read in __schedule kvm	C			145	2309d	2310d	4/26	fixed on 2018/02/14 17:41
linux-4.19	KASAN: use-after-free Read in __schedule				1	1144d	1144d	0/1	auto-closed as invalid on 2021/06/29 13:25
upstream	KASAN: use-after-free Read in __schedule (2) kvm	C		done	961	1867d	2086d	13/26	fixed on 2019/11/20 22:01
upstream	KMSAN: uninit-value in __schedule (4) reiserfs sctp	C	error		4	229d	225d	0/26	auto-obsoleted due to no activity on 2023/12/10 17:35
upstream	KMSAN: uninit-value in __schedule (5) kernel				1	12d	8d04h	0/26	upstream: reported on 2024/04/10 09:12
android-54	BUG: unable to handle kernel paging request in __schedule	C			12	1148d	1304d	0/2	auto-obsoleted due to no activity on 2023/04/17 21:57
upstream	KMSAN: uninit-value in __schedule (3) net trace				2	427d	430d	0/26	auto-obsoleted due to no activity on 2023/05/17 02:32
upstream	KMSAN: uninit-value in __schedule (2) kernel				1	600d	600d	0/26	auto-obsoleted due to no activity on 2022/11/24 18:35

raw: 00fff00000000000 ffffea00014ce2c8 ffff8880ba12ea78 0000000000000000 raw: 0000000000000000 0000000000000000 00000000ffffffff 0000000000000000 ================================================================== page dumped because: VM_BUG_ON_PAGE(page_ref_count(page) == 0) BUG: KASAN: use-after-free in schedule_debug kernel/sched/core.c:3329 [inline] BUG: KASAN: use-after-free in __schedule+0x1ae3/0x2040 kernel/sched/core.c:3439 ------------[ cut here ]------------ Read of size 8 at addr ffff8880a0f80000 by task syz-executor.4/18981 kernel BUG at include/linux/mm.h:519! CPU: 0 PID: 18981 Comm: syz-executor.4 Not tainted 4.19.211-syzkaller #0 invalid opcode: 0000 [#1] PREEMPT SMP KASAN Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 CPU: 1 PID: 18908 Comm: syz-executor.3 Not tainted 4.19.211-syzkaller #0 Call Trace: Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x1fc/0x2ef lib/dump_stack.c:118 RIP: 0010:put_page_testzero include/linux/mm.h:519 [inline] RIP: 0010:put_page include/linux/mm.h:962 [inline] RIP: 0010:tls_sk_proto_close+0x884/0xc20 net/tls/tls_main.c:277 print_address_description.cold+0x54/0x219 mm/kasan/report.c:256 Code: 92 f9 ff ff e8 2d ac 69 fa 4c 8b 24 24 49 83 ec 01 e9 c3 fa ff ff e8 1b ac 69 fa 48 c7 c6 60 77 58 89 4c 89 e7 e8 cc 3d 91 fa <0f> 0b e8 05 ac 69 fa be 00 00 10 00 48 89 ef e8 38 63 76 ff e9 d6 kasan_report_error.cold+0x8a/0x1b9 mm/kasan/report.c:354 RSP: 0018:ffff888047687a50 EFLAGS: 00010246 RAX: 0000000000040000 RBX: ffff888050c4e700 RCX: ffffc9000667e000 kasan_report mm/kasan/report.c:412 [inline] __asan_report_load8_noabort+0x88/0x90 mm/kasan/report.c:433 RDX: 0000000000040000 RSI: ffffffff86f8d964 RDI: ffffea000283e038 RBP: ffff888090da3000 R08: 000000000000003e R09: 0000000000000000 schedule_debug kernel/sched/core.c:3329 [inline] __schedule+0x1ae3/0x2040 kernel/sched/core.c:3439 R10: 0000000000000005 R11: 0000000000000000 R12: ffffea000283e000 R13: ffffea000283e034 R14: dffffc0000000000 R15: ffff8880a0bd50c0 FS: 00007ff756879700(0000) GS:ffff8880ba100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f523ec7c028 CR3: 00000000ab49b000 CR4: 00000000003426e0 schedule+0x8d/0x1b0 kernel/sched/core.c:3561 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 schedule_timeout+0x92d/0xfe0 kernel/time/timer.c:1794 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: inet_release+0xd7/0x1e0 net/ipv4/af_inet.c:427 do_wait_for_common kernel/sched/completion.c:83 [inline] __wait_for_common kernel/sched/completion.c:104 [inline] wait_for_common+0x29c/0x470 kernel/sched/completion.c:115 inet6_release+0x4c/0x70 net/ipv6/af_inet6.c:472 __sock_release+0xcd/0x2a0 net/socket.c:599 sock_close+0x15/0x20 net/socket.c:1214 __fput+0x2ce/0x890 fs/file_table.c:278 wait_for_completion_killable+0x14/0x30 kernel/sched/completion.c:241 task_work_run+0x148/0x1c0 kernel/task_work.c:113 __kthread_create_on_node+0x250/0x410 kernel/kthread.c:324 get_signal+0x1b64/0x1f70 kernel/signal.c:2400 do_signal+0x8f/0x1670 arch/x86/kernel/signal.c:799 kthread_create_on_node+0xbb/0xf0 kernel/kthread.c:392 exit_to_usermode_loop+0x204/0x2a0 arch/x86/entry/common.c:163 prepare_exit_to_usermode arch/x86/entry/common.c:198 [inline] syscall_return_slowpath arch/x86/entry/common.c:271 [inline] do_syscall_64+0x538/0x620 arch/x86/entry/common.c:296 entry_SYSCALL_64_after_hwframe+0x49/0xbe loop_prepare_queue drivers/block/loop.c:929 [inline] loop_set_fd drivers/block/loop.c:979 [inline] lo_ioctl+0xae5/0x20e0 drivers/block/loop.c:1576 RIP: 0033:0x7ff757f03fe9 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 bc ff ff ff f7 d8 64 89 01 48 __blkdev_driver_ioctl block/ioctl.c:303 [inline] blkdev_ioctl+0x5cb/0x1a80 block/ioctl.c:601 RSP: 002b:00007ff756879168 EFLAGS: 00000246 ORIG_RAX: 000000000000002c RAX: 00000000001d8000 RBX: 00007ff758016f60 RCX: 00007ff757f03fe9 RDX: 00000000e0ffffff RSI: 00000000200005c0 RDI: 0000000000000003 RBP: 00007ff757f5e08d R08: 0000000000000000 R09: 00000000000000d8 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffd8e29c2bf R14: 00007ff756879300 R15: 0000000000022000 Modules linked in: block_ioctl+0xe9/0x130 fs/block_dev.c:1906 vfs_ioctl fs/ioctl.c:46 [inline] file_ioctl fs/ioctl.c:501 [inline] do_vfs_ioctl+0xcdb/0x12e0 fs/ioctl.c:688 ---[ end trace dedc6ac61ba7981e ]--- RIP: 0010:put_page_testzero include/linux/mm.h:519 [inline] RIP: 0010:put_page include/linux/mm.h:962 [inline] RIP: 0010:tls_sk_proto_close+0x884/0xc20 net/tls/tls_main.c:277 ksys_ioctl+0x9b/0xc0 fs/ioctl.c:705 Code: 92 f9 ff ff e8 2d ac 69 fa 4c 8b 24 24 49 83 ec 01 e9 c3 fa ff ff e8 1b ac 69 fa 48 c7 c6 60 77 58 89 4c 89 e7 e8 cc 3d 91 fa <0f> 0b e8 05 ac 69 fa be 00 00 10 00 48 89 ef e8 38 63 76 ff e9 d6 __do_sys_ioctl fs/ioctl.c:712 [inline] __se_sys_ioctl fs/ioctl.c:710 [inline] __x64_sys_ioctl+0x6f/0xb0 fs/ioctl.c:710 RSP: 0018:ffff888047687a50 EFLAGS: 00010246 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x7fe36604ada7 Code: 3c 1c 48 f7 d8 49 39 c4 72 b8 e8 04 54 02 00 85 c0 78 bd 48 83 c4 08 4c 89 e0 5b 41 5c c3 0f 1f 44 00 00 b8 10 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 bc ff ff ff f7 d8 64 89 01 48 RAX: 0000000000040000 RBX: ffff888050c4e700 RCX: ffffc9000667e000 RSP: 002b:00007fe36497df28 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007fe3660949c8 RCX: 00007fe36604ada7 RDX: 0000000000000005 RSI: 0000000000004c00 RDI: 0000000000000006 RBP: 0000000000000006 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000005 R13: 0000000000000005 R14: 00000000200002a8 R15: 0000000000000007 The buggy address belongs to the page: page:ffffea000283e000 count:0 mapcount:0 mapping:0000000000000000 index:0x0 flags: 0xfff00000000000() raw: 00fff00000000000 ffffea00014ce2c8 ffffea0002d47008 0000000000000000 raw: 0000000000000000 0000000000000000 00000000ffffffff 0000000000000000 page dumped because: kasan: bad access detected Memory state around the buggy address: ffff8880a0f7ff00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ffff8880a0f7ff80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc >ffff8880a0f80000: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ^ ffff8880a0f80080: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ffff8880a0f80100: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ==================================================================