syzbot


BUG: scheduling while atomic in __skb_wait_for_more_packets

Status: premoderation: reported on 2024/02/08 23:03
Reported-by: syzbot+85f61688af67a9121fbc@syzkaller.appspotmail.com
First crash: 86d, last: 86d
Similar bugs (1)
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
android-6-1 BUG: scheduling while atomic in __skb_wait_for_more_packets 1 29d 29d 0/2 premoderation: reported on 2024/04/06 05:59

Sample crash report:
BUG: scheduling while atomic: syslogd/82/0x00000002
Modules linked in:
Preemption disabled at:
[<ffffffff8165d8ea>] is_module_text_address+0x1a/0x140 kernel/module.c:4811
CPU: 0 PID: 82 Comm: syslogd Not tainted 5.15.148-syzkaller-00704-g3802b45594e1 #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+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+0xd0b/0x1580 kernel/sched/core.c:6402
 schedule+0x11f/0x1e0 kernel/sched/core.c:6595
 schedule_timeout+0xa9/0x370 kernel/time/timer.c:1866
 __skb_wait_for_more_packets+0x394/0x5f0 net/core/datagram.c:122
 __unix_dgram_recvmsg+0x34f/0x1260 net/unix/af_unix.c:2329
 unix_dgram_recvmsg+0xc4/0xe0 net/unix/af_unix.c:2414
 sock_recvmsg_nosec net/socket.c:966 [inline]
 sock_recvmsg net/socket.c:984 [inline]
 sock_read_iter+0x353/0x480 net/socket.c:1057
 call_read_iter include/linux/fs.h:2196 [inline]
 new_sync_read fs/read_write.c:404 [inline]
 vfs_read+0xa7e/0xd40 fs/read_write.c:485
 ksys_read+0x199/0x2c0 fs/read_write.c:623
 __do_sys_read fs/read_write.c:633 [inline]
 __se_sys_read fs/read_write.c:631 [inline]
 __x64_sys_read+0x7b/0x90 fs/read_write.c:631
 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: 0033:0x7fbaa128ab6a
Code: 00 3d 00 00 41 00 75 0d 50 48 8d 3d 2d 08 0a 00 e8 ea 7d 01 00 31 c0 e9 07 ff ff ff 64 8b 04 25 18 00 00 00 85 c0 75 1b 0f 05 <48> 3d 00 f0 ff ff 76 6c 48 8b 15 8f a2 0d 00 f7 d8 64 89 02 48 83
RSP: 002b:00007ffea4cb1cd8 EFLAGS: 00000246 ORIG_RAX: 0000000000000000
RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007fbaa128ab6a
RDX: 00000000000000ff RSI: 000056300545f300 RDI: 0000000000000000
RBP: 000056300545f2c0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000001000 R11: 0000000000000246 R12: 000056300545f3ff
R13: 000056300545f300 R14: 0000000000000000 R15: 00007fbaa1467a80
 </TASK>

Crashes (1):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2024/02/08 23:02 android13-5.15-lts 3802b45594e1 7f07e9b0 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: scheduling while atomic in __skb_wait_for_more_packets
* Struck through repros no longer work on HEAD.