UBSAN: shift-out-of-bounds in radix_tree_delete

Title	Replies (including bot)	Last reply
[syzbot] [kernfs?] [bcachefs?] UBSAN: shift-out-of-bounds in radix_tree_delete_item	0 (4)	2025/03/19 09:40
[syzbot] [mm?] [bcachefs?] KASAN: slab-out-of-bounds Read in folio_try_get	2 (3)	2025/02/14 20:57

Title

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Last reply

[syzbot] [kernfs?] [bcachefs?] UBSAN: shift-out-of-bounds in radix_tree_delete_item

0 (4)

2025/03/19 09:40

[syzbot] [mm?] [bcachefs?] KASAN: slab-out-of-bounds Read in folio_try_get

2 (3)

2025/02/14 20:57


Created	Duration	User	Repo	Result
2025/03/02 12:52	19m	retest repro	upstream	report log
2025/03/02 12:52	24m	retest repro	upstream	report log
2025/03/02 12:44	14m	retest repro	upstream	report log

------------[ cut here ]------------ UBSAN: shift-out-of-bounds in lib/radix-tree.c:88:31 shift exponent 240 is too large for 64-bit type 'unsigned long' CPU: 0 UID: 0 PID: 5331 Comm: syz-executor299 Not tainted 6.14.0-rc2-syzkaller-00228-g04f41cbf03ec #0 Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014 Call Trace: <TASK> __dump_stack lib/dump_stack.c:94 [inline] dump_stack_lvl+0x241/0x360 lib/dump_stack.c:120 ubsan_epilogue lib/ubsan.c:231 [inline] __ubsan_handle_shift_out_of_bounds+0x3c8/0x420 lib/ubsan.c:468 radix_tree_descend lib/radix-tree.c:88 [inline] __radix_tree_lookup lib/radix-tree.c:766 [inline] radix_tree_delete_item+0x1df/0x3f0 lib/radix-tree.c:1420 kernfs_put+0x1ba/0x370 fs/kernfs/dir.c:575 __kernfs_remove+0x768/0x870 fs/kernfs/dir.c:1509 kernfs_remove+0x7a/0xa0 fs/kernfs/dir.c:1529 __kobject_del+0xe2/0x310 lib/kobject.c:604 kobject_del+0x45/0x60 lib/kobject.c:627 __bch2_fs_stop+0x288/0x5c0 fs/bcachefs/super.c:641 bch2_fs_stop+0x15/0x20 fs/bcachefs/super.c:691 bch2_fs_get_tree+0xdee/0x17a0 fs/bcachefs/fs.c:2299 vfs_get_tree+0x90/0x2b0 fs/super.c:1814 do_new_mount+0x2be/0xb40 fs/namespace.c:3560 do_mount fs/namespace.c:3900 [inline] __do_sys_mount fs/namespace.c:4111 [inline] __se_sys_mount+0x2d6/0x3c0 fs/namespace.c:4088 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f17e484402a Code: d8 64 89 02 48 c7 c0 ff ff ff ff eb a6 e8 7e 09 00 00 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b0 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f17e3fe7fd8 EFLAGS: 00000282 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 00007f17e3fe7ff0 RCX: 00007f17e484402a RDX: 00004000000058c0 RSI: 0000400000005900 RDI: 00007f17e3fe7ff0 RBP: 0000400000005900 R08: 00007f17e3fe8030 R09: 0000000000005931 R10: 0000000000010000 R11: 0000000000000282 R12: 00004000000058c0 R13: 00007f17e3fe8030 R14: 0000000000000003 R15: 0000000000010000 </TASK> ---[ end trace ]---

Crashes (3):
Time	Kernel	Commit	Syzkaller	Config	Log	Report	Syz repro	C repro	Assets (help?)	Manager	Title
2025/02/15 11:08	upstream	04f41cbf03ec	40a34ec9	.config	console log	report	syz / log	C	[disk image (non-bootable)] [vmlinux] [kernel image] [mounted in repro]	ci-snapshot-upstream-root	UBSAN: shift-out-of-bounds in radix_tree_delete_item
2025/02/16 12:40	upstream	ad1b832bf1cf	40a34ec9	.config	console log	report	syz / log		[disk image (non-bootable)] [vmlinux] [kernel image] [mounted in repro]	ci-snapshot-upstream-root	UBSAN: shift-out-of-bounds in radix_tree_delete_item
2025/02/12 19:27	upstream	09fbf3d50205	b27c2402	.config	console log	report	syz / log		[disk image] [vmlinux] [kernel image] [mounted in repro]	ci2-upstream-fs	UBSAN: shift-out-of-bounds in radix_tree_delete_item

Crashes (3):

Assets (help?)