UBSAN: shift-out-of-bounds in scalar32_min_max

Date	Name	Commit	Repro	Result
2023/12/21	upstream (ToT)	a4aebe936554	C	[report] UBSAN: shift-out-of-bounds in scalar32_min_max_arsh

Date

Name

Commit

Repro

Result

2023/12/21

upstream (ToT)

a4aebe936554

[report] UBSAN: shift-out-of-bounds in scalar32_min_max_arsh

Kernel	Title	Repro	Cause bisect	Fix bisect	Count	Last	Reported	Patched	Status
android-5-15	UBSAN: shift-out-of-bounds in scalar32_min_max_arsh origin:upstream missing-backport	C			2	13d	141d	0/2	upstream: reported C repro on 2023/12/17 16:19
linux-5.15	UBSAN: shift-out-of-bounds in scalar32_min_max_arsh origin:upstream missing-backport	C		inconclusive	1	96d	141d	0/3	upstream: reported C repro on 2023/12/17 16:29
android-6-1	UBSAN: shift-out-of-bounds in scalar32_min_max_arsh origin:upstream missing-backport	C	done	done	2	50d	140d	0/2	upstream: reported C repro on 2023/12/18 07:55

================================================================================ UBSAN: shift-out-of-bounds in kernel/bpf/verifier.c:9211:63 shift exponent 1073741824 is too large for 32-bit type 's32' (aka 'int') CPU: 0 PID: 3544 Comm: syz-executor176 Not tainted 6.1.69-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/17/2023 Call Trace: <TASK> __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x1e3/0x2cb lib/dump_stack.c:106 ubsan_epilogue lib/ubsan.c:151 [inline] __ubsan_handle_shift_out_of_bounds+0x3bf/0x420 lib/ubsan.c:321 scalar32_min_max_arsh+0x564/0x5f0 kernel/bpf/verifier.c:9211 adjust_scalar_min_max_vals kernel/bpf/verifier.c:9399 [inline] adjust_reg_min_max_vals+0x3d1d/0x6360 kernel/bpf/verifier.c:9500 check_alu_op kernel/bpf/verifier.c:9671 [inline] do_check+0x9dd3/0xf550 kernel/bpf/verifier.c:12526 do_check_common+0x8cb/0x1110 kernel/bpf/verifier.c:14940 do_check_main kernel/bpf/verifier.c:15003 [inline] bpf_check+0x66ca/0x16230 kernel/bpf/verifier.c:15577 bpf_prog_load+0x12df/0x1bb0 kernel/bpf/syscall.c:2603 __sys_bpf+0x382/0x6c0 kernel/bpf/syscall.c:4968 __do_sys_bpf kernel/bpf/syscall.c:5072 [inline] __se_sys_bpf kernel/bpf/syscall.c:5070 [inline] __x64_sys_bpf+0x78/0x90 kernel/bpf/syscall.c:5070 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:81 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7f2c376d43e9 Code: 48 83 c4 28 c3 e8 37 17 00 00 0f 1f 80 00 00 00 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 b8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007ffc08c065b8 EFLAGS: 00000246 ORIG_RAX: 0000000000000141 RAX: ffffffffffffffda RBX: 00007ffc08c06798 RCX: 00007f2c376d43e9 RDX: 0000000000000048 RSI: 00000000200054c0 RDI: 0000000000000005 RBP: 00007f2c37747610 R08: 0000000000000000 R09: 0000000000000000 R10: 00000000ffffffff R11: 0000000000000246 R12: 0000000000000001 R13: 00007ffc08c06788 R14: 0000000000000001 R15: 0000000000000001 </TASK> ================================================================================

Crashes (1):
Time	Kernel	Commit	Syzkaller	Config	Log	Report	Syz repro	C repro	VM info	Assets (help?)	Manager	Title
2023/12/21 06:26	linux-6.1.y	4aa6747d9352	de21eb89	.config	console log	report	syz	C		[disk image] [vmlinux] [kernel image]	ci2-linux-6-1-kasan-perf	UBSAN: shift-out-of-bounds in scalar32_min_max_arsh

Crashes (1):

Assets (help?)