syzbot


BUG: scheduling while atomic in p9_client_rpc

Status: premoderation: reported on 2024/05/08 18:26
Reported-by: syzbot+bd30d8df176ddfaf7635@syzkaller.appspotmail.com
First crash: 77d, last: 77d
Similar bugs (1)
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
android-6-1 BUG: scheduling while atomic in p9_client_rpc 2 31d 95d 0/2 premoderation: reported on 2024/04/20 17:00

Sample crash report:
BUG: scheduling while atomic: syz-executor.1/31326/0x00000002
Modules linked in:
Preemption disabled at:
[<ffffffff8165ef0a>] is_module_text_address+0x1a/0x140 kernel/module.c:4811
CPU: 1 PID: 31326 Comm: syz-executor.1 Tainted: G        W         5.15.149-syzkaller-00490-g5d96939590c0 #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+0x15/0x17 lib/dump_stack.c:113
 __schedule_bug+0x195/0x260 kernel/sched/core.c:5707
 schedule_debug kernel/sched/core.c:5734 [inline]
 __schedule+0xd19/0x1590 kernel/sched/core.c:6402
 schedule+0x11f/0x1e0 kernel/sched/core.c:6595
 p9_client_rpc+0x3c3/0x13a0 net/9p/client.c:762
 p9_client_create+0x9be/0x1130 net/9p/client.c:1054
 v9fs_session_init+0x1fa/0x19b0 fs/9p/v9fs.c:409
 v9fs_mount+0x75/0x7f0 fs/9p/vfs_super.c:126
 legacy_get_tree+0xf1/0x190 fs/fs_context.c:611
 vfs_get_tree+0x88/0x290 fs/super.c:1517
 do_new_mount+0x2ba/0xb30 fs/namespace.c:3005
 path_mount+0x671/0x1070 fs/namespace.c:3335
 do_mount fs/namespace.c:3348 [inline]
 __do_sys_mount fs/namespace.c:3556 [inline]
 __se_sys_mount+0x2c4/0x3b0 fs/namespace.c:3533
 __x64_sys_mount+0xbf/0xd0 fs/namespace.c:3533
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x61/0xcb
RIP: 0033:0x7effbee02d69
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:00007effbdb760c8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007effbef30f80 RCX: 00007effbee02d69
RDX: 00000000200001c0 RSI: 0000000020000040 RDI: 0000000000000000
RBP: 00007effbee4f49e R08: 0000000020000300 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000000b R14: 00007effbef30f80 R15: 00007ffd9e993a58
 </TASK>

Crashes (1):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2024/05/08 18:25 android13-5.15-lts 5d96939590c0 20bf80e1 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: scheduling while atomic in p9_client_rpc
* Struck through repros no longer work on HEAD.