syzbot


BUG: scheduling while atomic in bpf_prog_pack_alloc

Status: upstream: reported C repro on 2024/04/03 20:12
Bug presence: origin:lts
[Documentation on labels]
Reported-by: syzbot+bcbfe1cabfaec75ad55a@syzkaller.appspotmail.com
First crash: 78d, last: 60d
Bug presence (2)
Date Name Commit Repro Result
2024/04/03 lts (merge base) 883d1a956208 C [report] BUG: scheduling while atomic in do_epoll_wait
2024/04/03 upstream (ToT) c85af715cac0 C Didn't crash
Last patch testing requests (1)
Created Duration User Patch Repo Result
2024/04/17 20:42 14m retest repro android14-6.1 report log

Sample crash report:
BUG: scheduling while atomic: syz-executor283/301/0x00000002
Modules linked in:
Preemption disabled at:
[<ffffffff8163d72f>] is_module_text_address+0x1f/0x360 kernel/module/main.c:3140
CPU: 1 PID: 301 Comm: syz-executor283 Not tainted 6.1.75-syzkaller-00112-gaf361f9a1066 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0x151/0x1b7 lib/dump_stack.c:106
 dump_stack+0x15/0x1b lib/dump_stack.c:113
 __schedule_bug+0x195/0x260 kernel/sched/core.c:5960
 schedule_debug kernel/sched/core.c:5987 [inline]
 __schedule+0xcf7/0x1550 kernel/sched/core.c:6622
 schedule+0xc3/0x180 kernel/sched/core.c:6805
 schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:6864
 mutex_optimistic_spin kernel/locking/mutex.c:529 [inline]
 __mutex_lock_common kernel/locking/mutex.c:629 [inline]
 __mutex_lock+0x5b6/0x1ca0 kernel/locking/mutex.c:774
 __mutex_lock_slowpath+0xe/0x10 kernel/locking/mutex.c:1063
 mutex_lock+0x130/0x1e0 kernel/locking/mutex.c:295
 bpf_prog_pack_alloc+0x2b/0x380 kernel/bpf/core.c:884
 bpf_jit_binary_pack_alloc+0x1ab/0x540 kernel/bpf/core.c:1082
 bpf_int_jit_compile+0xb4aa/0xca30 arch/x86/net/bpf_jit_comp.c:2440
 bpf_prog_select_runtime+0x8da/0xc10 kernel/bpf/core.c:2191
 bpf_prog_load+0x136d/0x1bf0 kernel/bpf/syscall.c:2609
 __sys_bpf+0x52c/0x7f0 kernel/bpf/syscall.c:4981
 __do_sys_bpf kernel/bpf/syscall.c:5085 [inline]
 __se_sys_bpf kernel/bpf/syscall.c:5083 [inline]
 __x64_sys_bpf+0x7c/0x90 kernel/bpf/syscall.c:5083
 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: 0033:0x7f864e8f7ee9
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 c1 17 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:00007ffebec97e78 EFLAGS: 00000246 ORIG_RAX: 0000000000000141
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f864e8f7ee9
RDX: 0000000000000048 RSI: 0000000020000b40 RDI: 0000000000000005
RBP: 00000000000f4240 R08: 0000000000000000 R09: 00000000000000a0
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000004cef
R13: 00007ffebec97e8c R14: 00007ffebec97ea0 R15: 00007ffebec97e90
 </TASK>

Crashes (2):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2024/04/03 20:11 android14-6.1 af361f9a1066 51c4dcff .config console log report syz C [disk image] [vmlinux] [kernel image] ci2-android-6-1-perf BUG: scheduling while atomic in bpf_prog_pack_alloc
2024/04/22 14:05 android14-6.1 dcb09569bbff 36c961ad .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1-perf BUG: scheduling while atomic in bpf_prog_pack_alloc
* Struck through repros no longer work on HEAD.