general protection fault in LZ4_decompress_safe

Date	Name	Commit	Repro	Result
2023/08/21	lts (merge base)	b1644a0031cf	C	[report] general protection fault in LZ4_decompress_safe_partial
2023/08/21	upstream (ToT)	f7757129e3de	C	Didn't crash

Date

Name

Commit

Repro

Result

2023/08/21

lts (merge base)

b1644a0031cf

[report] general protection fault in LZ4_decompress_safe_partial

2023/08/21

upstream (ToT)

f7757129e3de

Didn't crash

Kernel	Title	Repro	Cause bisect	Fix bisect	Count	Last	Reported	Patched	Status
upstream	KASAN: use-after-free Read in LZ4_decompress_safe_partial erofs	C	done		13	976d	1131d	22/28	fixed on 2023/02/24 13:50
upstream	KMSAN: uninit-value in LZ4_decompress_safe_partial bcachefs	C			4	3d04h	14h13m	0/28	upstream: reported C repro on 2024/12/03 18:30

upstream

KASAN: use-after-free Read in LZ4_decompress_safe_partial erofs

done

976d

1131d

22/28

fixed on 2023/02/24 13:50

upstream

KMSAN: uninit-value in LZ4_decompress_safe_partial bcachefs

3d04h

14h13m

0/28

upstream: reported C repro on 2024/12/03 18:30

Created	Duration	User	Patch	Repo	Result
2023/09/04 05:33	27m	retest repro		android14-6.1	report log

Created

Duration

User

Patch

Repo

Result

2023/09/04 05:33

27m

retest repro

android14-6.1

report log


Created	Duration	User	Patch	Repo	Result
2023/08/29 06:18	5h35m	bisect		android14-6.1	OK (1) job log log
2023/08/21 17:57	12h13m	bisect		android14-6.1	error job log marked invalid by nogikh@google.com

RBP: 0000000000000001 R08: 00007fff8aaf05b7 R09: 000000000200808a R10: 0000000000000001 R11: 0000000000000246 R12: 00007fff8aaf0870 R13: 00007fff8aaf08b0 R14: 0000000000002000 R15: 0000000000000003 </TASK> erofs: (device loop0): z_erofs_do_read_page: failed to get inline page, err -12 general protection fault, probably for non-canonical address 0xe0009d100000009c: 0000 [#1] PREEMPT SMP KASAN KASAN: maybe wild-memory-access in range [0x00050880000004e0-0x00050880000004e7] CPU: 0 PID: 305 Comm: syz-executor222 Not tainted 6.1.25-syzkaller-00052-gc2611a04b92f #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/26/2023 RIP: 0010:LZ4_decompress_generic lib/lz4/lz4_decompress.c:112 [inline] RIP: 0010:LZ4_decompress_safe_partial+0x18af/0x1920 lib/lz4/lz4_decompress.c:473 Code: b3 bf 01 00 00 00 44 89 f6 e8 3d 22 f6 fe 41 83 fe 01 75 5d e8 82 1e f6 fe 4c 89 e0 48 c1 e8 03 48 b9 00 00 00 00 00 fc ff df <0f> b6 04 08 84 c0 75 4f 41 0f b6 1c 24 45 31 f6 31 ff 89 de e8 e8 RSP: 0018:ffffc90000ed68e8 EFLAGS: 00010206 RAX: 0000a1100000009c RBX: 0000000000000000 RCX: dffffc0000000000 RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000001 RBP: ffffc90000ed6990 R08: ffffffff827ed003 R09: ffffc90000ed6e50 R10: 0000000000000000 R11: dffffc0000000001 R12: 00050880000004e0 R13: 0000000000000001 R14: 0000000000000001 R15: 0000000000000000 FS: 0000555557336380(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fbd6e32afd2 CR3: 000000010b85b000 CR4: 00000000003506b0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: <TASK> z_erofs_lz4_decompress_mem fs/erofs/decompressor.c:241 [inline] z_erofs_lz4_decompress+0x13f0/0x1ba0 fs/erofs/decompressor.c:312 z_erofs_decompress+0x76/0xb0 fs/erofs/decompressor.c:390 z_erofs_decompress_pcluster fs/erofs/zdata.c:1196 [inline] z_erofs_decompress_queue+0x1cf5/0x32b0 fs/erofs/zdata.c:1283 z_erofs_runqueue+0x13b1/0x1500 fs/erofs/zdata.c:1690 z_erofs_read_folio+0x3d4/0x610 fs/erofs/zdata.c:1785 filemap_read_folio+0xfc/0x2a0 mm/filemap.c:2419 do_read_cache_folio+0x20d/0x3f0 mm/filemap.c:3547 read_cache_folio+0x4e/0x70 mm/filemap.c:3579 erofs_bread+0x13b/0x480 fs/erofs/data.c:46 find_target_block_classic fs/erofs/namei.c:108 [inline] erofs_namei+0x1b6/0xcf0 fs/erofs/namei.c:184 erofs_lookup+0x109/0x300 fs/erofs/namei.c:212 lookup_open fs/namei.c:3391 [inline] open_last_lookups fs/namei.c:3481 [inline] path_openat+0x10fd/0x2d60 fs/namei.c:3711 do_filp_open+0x230/0x480 fs/namei.c:3741 do_sys_openat2+0x13f/0x850 fs/open.c:1333 do_sys_open fs/open.c:1349 [inline] __do_sys_open fs/open.c:1357 [inline] __se_sys_open fs/open.c:1353 [inline] __x64_sys_open+0x221/0x270 fs/open.c:1353 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7fbd76768169 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 21 18 00 00 90 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 b8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007fff8aaf0818 EFLAGS: 00000246 ORIG_RAX: 0000000000000002 RAX: ffffffffffffffda RBX: 00007fff8aaf0840 RCX: 00007fbd76768169 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000020000000 RBP: 0000000000000001 R08: 00007fff8aaf05b7 R09: 000000000200808a R10: 0000000000000001 R11: 0000000000000246 R12: 00007fff8aaf0870 R13: 00007fff8aaf08b0 R14: 0000000000002000 R15: 0000000000000003 </TASK> Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:LZ4_decompress_generic lib/lz4/lz4_decompress.c:112 [inline] RIP: 0010:LZ4_decompress_safe_partial+0x18af/0x1920 lib/lz4/lz4_decompress.c:473 Code: b3 bf 01 00 00 00 44 89 f6 e8 3d 22 f6 fe 41 83 fe 01 75 5d e8 82 1e f6 fe 4c 89 e0 48 c1 e8 03 48 b9 00 00 00 00 00 fc ff df <0f> b6 04 08 84 c0 75 4f 41 0f b6 1c 24 45 31 f6 31 ff 89 de e8 e8 RSP: 0018:ffffc90000ed68e8 EFLAGS: 00010206 RAX: 0000a1100000009c RBX: 0000000000000000 RCX: dffffc0000000000 RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000001 RBP: ffffc90000ed6990 R08: ffffffff827ed003 R09: ffffc90000ed6e50 R10: 0000000000000000 R11: dffffc0000000001 R12: 00050880000004e0 R13: 0000000000000001 R14: 0000000000000001 R15: 0000000000000000 FS: 0000555557336380(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fbd6e32afd2 CR3: 000000010b85b000 CR4: 00000000003506b0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess): 0: b3 bf mov $0xbf,%bl 2: 01 00 add %eax,(%rax) 4: 00 00 add %al,(%rax) 6: 44 89 f6 mov %r14d,%esi 9: e8 3d 22 f6 fe call 0xfef6224b e: 41 83 fe 01 cmp $0x1,%r14d 12: 75 5d jne 0x71 14: e8 82 1e f6 fe call 0xfef61e9b 19: 4c 89 e0 mov %r12,%rax 1c: 48 c1 e8 03 shr $0x3,%rax 20: 48 b9 00 00 00 00 00 movabs $0xdffffc0000000000,%rcx 27: fc ff df * 2a: 0f b6 04 08 movzbl (%rax,%rcx,1),%eax <-- trapping instruction 2e: 84 c0 test %al,%al 30: 75 4f jne 0x81 32: 41 0f b6 1c 24 movzbl (%r12),%ebx 37: 45 31 f6 xor %r14d,%r14d 3a: 31 ff xor %edi,%edi 3c: 89 de mov %ebx,%esi 3e: e8 .byte 0xe8 3f: e8 .byte 0xe8

Crashes (2):
Time	Kernel	Commit	Syzkaller	Config	Log	Report	Syz repro	C repro	VM info	Assets (help?)	Manager	Title
2023/08/21 04:56	android14-6.1	c2611a04b92f	d216d8a0	.config	strace log	report	syz	C		[disk image] [vmlinux] [kernel image] [mounted in repro]	ci2-android-6-1	general protection fault in LZ4_decompress_safe_partial
2023/08/21 04:44	android14-6.1	c2611a04b92f	d216d8a0	.config	console log	report			info	[disk image] [vmlinux] [kernel image]	ci2-android-6-1	general protection fault in LZ4_decompress_safe_partial

Crashes (2):

Assets (help?)