syzbot


BUG: scheduling while atomic in p9_client_rpc

Status: premoderation: reported on 2024/04/20 17:00
Reported-by: syzbot+da30f7a116f5e3e71476@syzkaller.appspotmail.com
First crash: 56d, last: 56d
Similar bugs (1)
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
android-5-15 BUG: scheduling while atomic in p9_client_rpc 1 38d 38d 0/2 premoderation: reported on 2024/05/08 18:26

Sample crash report:
BUG: scheduling while atomic: syz-executor.0/12501/0x00000002
Modules linked in:
Preemption disabled at:
[<ffffffff8163d87f>] is_module_text_address+0x1f/0x360 kernel/module/main.c:3140
CPU: 0 PID: 12501 Comm: syz-executor.0 Tainted: G        W          6.1.75-syzkaller-00037-gdcb09569bbff #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
 p9_client_rpc+0x3ce/0xaa0 net/9p/client.c:707
 p9_client_attach+0x15e/0x3e0 net/9p/client.c:1104
 v9fs_session_init+0x14a8/0x1950 fs/9p/v9fs.c:457
 v9fs_mount+0xca/0xb60 fs/9p/vfs_super.c:126
 legacy_get_tree+0xf1/0x190 fs/fs_context.c:632
 vfs_get_tree+0x88/0x290 fs/super.c:1564
 do_new_mount+0x2ba/0xb30 fs/namespace.c:3051
 path_mount+0x671/0x1070 fs/namespace.c:3381
 do_mount fs/namespace.c:3394 [inline]
 __do_sys_mount fs/namespace.c:3602 [inline]
 __se_sys_mount+0x2c4/0x3b0 fs/namespace.c:3579
 __x64_sys_mount+0xbf/0xd0 fs/namespace.c:3579
 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: 0033:0x7f4d96a7dea9
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 20 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 b0 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f4d978340c8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007f4d96babf80 RCX: 00007f4d96a7dea9
RDX: 0000000020000b80 RSI: 0000000020000040 RDI: 0000000000000000
RBP: 00007f4d96aca4a4 R08: 0000000020000580 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000000b R14: 00007f4d96babf80 R15: 00007fff62156dc8
 </TASK>

Crashes (1):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2024/04/20 16:59 android14-6.1 dcb09569bbff af24b050 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 BUG: scheduling while atomic in p9_client_rpc
* Struck through repros no longer work on HEAD.