general protection fault in ext4_fill

Title	Replies (including bot)	Last reply
[PATCH 1/3] ext4: fix lost error code reporting in __ext4_fill_super()	2 (2)	2023/04/28 03:35

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[PATCH 1/3] ext4: fix lost error code reporting in __ext4_fill_super()

2 (2)

2023/04/28 03:35

Kernel	Title	Repro	Cause bisect	Fix bisect	Count	Last	Reported	Patched	Status
upstream	general protection fault in ext4_fill_super ext4	C	done		5	825d	1040d	22/28	fixed on 2023/02/24 13:50
android-54	KASAN: use-after-free Write in ext4_fill_super	syz			1	427d	441d	0/2	auto-obsoleted due to no activity on 2023/12/21 12:01

general protection fault, probably for non-canonical address 0xdffffc000000000f: 0000 [#1] PREEMPT SMP KASAN KASAN: null-ptr-deref in range [0x0000000000000078-0x000000000000007f] CPU: 0 PID: 15377 Comm: syz-executor.1 Not tainted 6.3.0-syzkaller-07919-g6e98b09da931 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/14/2023 RIP: 0010:ext4_quota_capable fs/ext4/ext4.h:3417 [inline] RIP: 0010:ext4_quota_mode fs/ext4/super.c:4274 [inline] RIP: 0010:ext4_fill_super+0x37aa/0xb140 fs/ext4/super.c:5678 Code: c1 ea 03 80 3c 02 00 0f 85 41 49 00 00 4d 8b a6 78 06 00 00 48 b8 00 00 00 00 00 fc ff df 49 8d 7c 24 78 48 89 fa 48 c1 ea 03 <0f> b6 04 02 84 c0 74 08 3c 03 0f 8e fd 48 00 00 41 8b 5c 24 78 31 RSP: 0018:ffffc90014e8fb40 EFLAGS: 00010206 RAX: dffffc0000000000 RBX: 0000000000000001 RCX: ffffc90003831000 RDX: 000000000000000f RSI: ffffffff82390a60 RDI: 0000000000000078 RBP: ffffffff8a6393c0 R08: 0000000000000005 R09: 0000000000000000 R10: 0000000000000001 R11: 0000000000094001 R12: 0000000000000000 R13: 0000000000000000 R14: ffff888038a58000 R15: 0000000000000001 FS: 00007f1b40eb7700(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000555555be4708 CR3: 0000000021ef9000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: <TASK> 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: 0033:0x7f1b4008d69a Code: 48 c7 c2 b8 ff ff ff f7 d8 64 89 02 b8 ff ff ff ff eb d2 e8 b8 04 00 00 0f 1f 84 00 00 00 00 00 49 89 ca b8 a5 00 00 00 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:00007f1b40eb6f88 EFLAGS: 00000202 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 00000000000004b2 RCX: 00007f1b4008d69a RDX: 0000000020000040 RSI: 0000000020000500 RDI: 00007f1b40eb6fe0 RBP: 00007f1b40eb7020 R08: 00007f1b40eb7020 R09: 0000000000000047 R10: 0000000000000047 R11: 0000000000000202 R12: 0000000020000040 R13: 0000000020000500 R14: 00007f1b40eb6fe0 R15: 0000000020000400 </TASK> Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:ext4_quota_capable fs/ext4/ext4.h:3417 [inline] RIP: 0010:ext4_quota_mode fs/ext4/super.c:4274 [inline] RIP: 0010:ext4_fill_super+0x37aa/0xb140 fs/ext4/super.c:5678 Code: c1 ea 03 80 3c 02 00 0f 85 41 49 00 00 4d 8b a6 78 06 00 00 48 b8 00 00 00 00 00 fc ff df 49 8d 7c 24 78 48 89 fa 48 c1 ea 03 <0f> b6 04 02 84 c0 74 08 3c 03 0f 8e fd 48 00 00 41 8b 5c 24 78 31 RSP: 0018:ffffc90014e8fb40 EFLAGS: 00010206 RAX: dffffc0000000000 RBX: 0000000000000001 RCX: ffffc90003831000 RDX: 000000000000000f RSI: ffffffff82390a60 RDI: 0000000000000078 RBP: ffffffff8a6393c0 R08: 0000000000000005 R09: 0000000000000000 R10: 0000000000000001 R11: 0000000000094001 R12: 0000000000000000 R13: 0000000000000000 R14: ffff888038a58000 R15: 0000000000000001 FS: 00007f1b40eb7700(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00000000202f9030 CR3: 0000000021ef9000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess): 0: c1 ea 03 shr $0x3,%edx 3: 80 3c 02 00 cmpb $0x0,(%rdx,%rax,1) 7: 0f 85 41 49 00 00 jne 0x494e d: 4d 8b a6 78 06 00 00 mov 0x678(%r14),%r12 14: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax 1b: fc ff df 1e: 49 8d 7c 24 78 lea 0x78(%r12),%rdi 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: 84 c0 test %al,%al 30: 74 08 je 0x3a 32: 3c 03 cmp $0x3,%al 34: 0f 8e fd 48 00 00 jle 0x4937 3a: 41 8b 5c 24 78 mov 0x78(%r12),%ebx 3f: 31 .byte 0x31

Crashes (1):
Time	Kernel	Commit	Syzkaller	Config	Log	Report	Syz repro	C repro	VM info	Assets (help?)	Manager	Title
2023/04/27 15:01	upstream	6e98b09da931	6f5b1cc4	.config	console log	report			info	[disk image] [vmlinux] [kernel image]	ci-upstream-kasan-gce-selinux-root	general protection fault in ext4_fill_super

Crashes (1):

Assets (help?)