general protection fault in erofs

Title	Replies (including bot)	Last reply
[PATCH v2] erofs: fix null-ptr-deref caused by erofs_xattr_prefixes_init	3 (3)	2023/05/23 06:25
[syzbot] [erofs?] general protection fault in erofs_bread (2)	1 (4)	2023/05/18 00:06
[PATCH] erofs: fix null-ptr-deref caused by erofs_xattr_prefixes_init	2 (2)	2023/05/15 09:30

Title

Replies (including bot)

Last reply

[PATCH v2] erofs: fix null-ptr-deref caused by erofs_xattr_prefixes_init

3 (3)

2023/05/23 06:25

[syzbot] [erofs?] general protection fault in erofs_bread (2)

1 (4)

2023/05/18 00:06

[PATCH] erofs: fix null-ptr-deref caused by erofs_xattr_prefixes_init

2 (2)

2023/05/15 09:30

Kernel	Title	Repro	Cause bisect	Fix bisect	Count	Last	Reported	Patched	Status
upstream	general protection fault in erofs_bread erofs	C	error		3	544d	554d	22/26	fixed on 2023/02/24 13:50

upstream

general protection fault in erofs_bread erofs

error

544d

554d

22/26

fixed on 2023/02/24 13:50


Created	Duration	User	Patch	Repo	Result
2023/05/17 18:15	19m	hsiangkao@linux.alibaba.com		git://git.kernel.org/pub/scm/linux/kernel/git/xiang/erofs.git fixes	OK log

erofs: (device loop0): EXPERIMENTAL global deduplication feature in use. Use at your own risk! general protection fault, probably for non-canonical address 0xdffffc0000000019: 0000 [#1] PREEMPT SMP KASAN KASAN: null-ptr-deref in range [0x00000000000000c8-0x00000000000000cf] CPU: 0 PID: 4995 Comm: syz-executor235 Not tainted 6.4.0-rc2-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/28/2023 RIP: 0010:erofs_bread+0x56/0x6d0 fs/erofs/data.c:38 Code: 48 c1 ea 03 80 3c 02 00 0f 85 15 06 00 00 48 b8 00 00 00 00 00 fc ff df 4c 8b 23 49 8d bc 24 ca 00 00 00 48 89 fa 48 c1 ea 03 <0f> b6 04 02 48 89 fa 83 e2 07 38 d0 7f 08 84 c0 0f 85 82 05 00 00 RSP: 0018:ffffc900034b7980 EFLAGS: 00010202 RAX: dffffc0000000000 RBX: ffffc900034b7af8 RCX: 0000000000000000 RDX: 0000000000000019 RSI: ffffffff83c1ea5f RDI: 00000000000000ca RBP: 0000000000000000 R08: 0000000000000001 R09: 000000000000003f R10: 000000000000000c R11: ffffffff81d50f12 R12: 0000000000000000 R13: 0000000000000001 R14: ffff888019bd4000 R15: ffff888019bd4000 FS: 0000555555bf6300(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fc664ae0ca0 CR3: 0000000020cc6000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: <TASK> erofs_read_metadata+0xbb/0x490 fs/erofs/super.c:137 erofs_xattr_prefixes_init+0x3b1/0x590 fs/erofs/xattr.c:684 erofs_fc_fill_super+0x1734/0x2a80 fs/erofs/super.c:825 get_tree_bdev+0x44a/0x770 fs/super.c:1303 vfs_get_tree+0x8d/0x350 fs/super.c:1510 do_new_mount fs/namespace.c:3039 [inline] path_mount+0x134b/0x1e40 fs/namespace.c:3369 do_mount fs/namespace.c:3382 [inline] __do_sys_mount fs/namespace.c:3591 [inline] __se_sys_mount fs/namespace.c:3568 [inline] __x64_sys_mount+0x283/0x300 fs/namespace.c:3568 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x39/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7fc664b09e5a Code: 83 c4 08 5b 5d c3 66 2e 0f 1f 84 00 00 00 00 00 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 c0 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007ffd1310be98 EFLAGS: 00000286 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 00007fc664b09e5a RDX: 0000000020000180 RSI: 0000000020000140 RDI: 00007ffd1310bea0 RBP: 00007ffd1310bea0 R08: 00007ffd1310bee0 R09: 00000000000001d4 R10: 0000000001000801 R11: 0000000000000286 R12: 0000000000000005 R13: 0000555555bf62c0 R14: 00007ffd1310bee0 R15: 0000000000000000 </TASK> Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:erofs_bread+0x56/0x6d0 fs/erofs/data.c:38 Code: 48 c1 ea 03 80 3c 02 00 0f 85 15 06 00 00 48 b8 00 00 00 00 00 fc ff df 4c 8b 23 49 8d bc 24 ca 00 00 00 48 89 fa 48 c1 ea 03 <0f> b6 04 02 48 89 fa 83 e2 07 38 d0 7f 08 84 c0 0f 85 82 05 00 00 RSP: 0018:ffffc900034b7980 EFLAGS: 00010202 RAX: dffffc0000000000 RBX: ffffc900034b7af8 RCX: 0000000000000000 RDX: 0000000000000019 RSI: ffffffff83c1ea5f RDI: 00000000000000ca RBP: 0000000000000000 R08: 0000000000000001 R09: 000000000000003f R10: 000000000000000c R11: ffffffff81d50f12 R12: 0000000000000000 R13: 0000000000000001 R14: ffff888019bd4000 R15: ffff888019bd4000 FS: 0000555555bf6300(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fb0e8fdab10 CR3: 0000000020cc6000 CR4: 00000000003506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess): 0: 48 c1 ea 03 shr $0x3,%rdx 4: 80 3c 02 00 cmpb $0x0,(%rdx,%rax,1) 8: 0f 85 15 06 00 00 jne 0x623 e: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax 15: fc ff df 18: 4c 8b 23 mov (%rbx),%r12 1b: 49 8d bc 24 ca 00 00 lea 0xca(%r12),%rdi 22: 00 23: 48 89 fa mov %rdi,%rdx 26: 48 c1 ea 03 shr $0x3,%rdx * 2a: 0f b6 04 02 movzbl (%rdx,%rax,1),%eax <-- trapping instruction 2e: 48 89 fa mov %rdi,%rdx 31: 83 e2 07 and $0x7,%edx 34: 38 d0 cmp %dl,%al 36: 7f 08 jg 0x40 38: 84 c0 test %al,%al 3a: 0f 85 82 05 00 00 jne 0x5c2

Crashes (7):
Time	Kernel	Commit	Syzkaller	Config	Log	Report	Syz repro	C repro	VM info	Assets (help?)	Manager	Title
2023/05/17 17:35	upstream	f1fcbaa18b28	eaac4681	.config	strace log	report	syz	C		[disk image] [vmlinux] [kernel image] [mounted in repro]	ci-upstream-kasan-gce-selinux-root	general protection fault in erofs_bread
2023/05/22 16:35	upstream	44c026a73be8	4bce1a3e	.config	console log	report			info	[disk image] [vmlinux] [kernel image]	ci2-upstream-fs	general protection fault in erofs_bread
2023/05/19 06:52	upstream	2d1bcbc6cd70	3bb7af1d	.config	console log	report			info	[disk image] [vmlinux] [kernel image]	ci2-upstream-fs	general protection fault in erofs_bread
2023/05/17 17:18	upstream	f1fcbaa18b28	eaac4681	.config	console log	report			info	[disk image] [vmlinux] [kernel image]	ci-upstream-kasan-gce-selinux-root	general protection fault in erofs_bread
2023/04/27 09:23	upstream	5c7ecada25d2	19a3dabe	.config	console log	report			info	[disk image] [vmlinux] [kernel image]	ci2-upstream-fs	general protection fault in erofs_bread
2023/05/27 09:14	linux-next	715abedee4cd	cf184559	.config	console log	report			info	[disk image] [vmlinux] [kernel image]	ci-upstream-linux-next-kasan-gce-root	general protection fault in erofs_bread
2023/05/23 11:19	linux-next	715abedee4cd	4bce1a3e	.config	console log	report			info	[disk image] [vmlinux] [kernel image]	ci-upstream-linux-next-kasan-gce-root	general protection fault in erofs_bread

Crashes (7):

Assets (help?)