syzbot


BUG: scheduling while atomic in __skb_wait_for_more_packets

Status: premoderation: reported on 2024/04/06 05:59
Reported-by: syzbot+b3c4d6182077789d9189@syzkaller.appspotmail.com
First crash: 76d, last: 31d
Similar bugs (1)
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
android-5-15 BUG: scheduling while atomic in __skb_wait_for_more_packets 1 133d 133d 0/2 auto-obsoleted due to no activity on 2024/05/08 23:04

Sample crash report:
BUG: scheduling while atomic: syslogd/84/0x00000002
Modules linked in:
Preemption disabled at:
[<ffffffff8163eadf>] is_module_text_address+0x1f/0x360 kernel/module/main.c:3140
CPU: 0 PID: 84 Comm: syslogd Not tainted 6.1.75-syzkaller-00022-g34a15d350726 #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:5964
 schedule_debug kernel/sched/core.c:5991 [inline]
 __schedule+0xcf7/0x1550 kernel/sched/core.c:6626
 schedule+0xc3/0x180 kernel/sched/core.c:6809
 schedule_timeout+0xa9/0x380 kernel/time/timer.c:1917
 __skb_wait_for_more_packets+0x394/0x5f0 net/core/datagram.c:120
 __unix_dgram_recvmsg+0x350/0x12b0 net/unix/af_unix.c:2463
 unix_dgram_recvmsg+0xb7/0xd0 net/unix/af_unix.c:2547
 sock_recvmsg_nosec net/socket.c:1020 [inline]
 sock_recvmsg net/socket.c:1038 [inline]
 sock_read_iter+0x3b2/0x4b0 net/socket.c:1111
 call_read_iter include/linux/fs.h:2252 [inline]
 new_sync_read fs/read_write.c:389 [inline]
 vfs_read+0x771/0xad0 fs/read_write.c:470
 ksys_read+0x199/0x2c0 fs/read_write.c:613
 __do_sys_read fs/read_write.c:623 [inline]
 __se_sys_read fs/read_write.c:621 [inline]
 __x64_sys_read+0x7b/0x90 fs/read_write.c:621
 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: 0033:0x7faac2bf1b6a
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:00007fff8e9db358 EFLAGS: 00000246 ORIG_RAX: 0000000000000000
RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007faac2bf1b6a
RDX: 00000000000000ff RSI: 0000556067984300 RDI: 0000000000000000
RBP: 00005560679842c0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000001000 R11: 0000000000000246 R12: 000055606798435c
R13: 0000556067984300 R14: 0000000000000000 R15: 00007faac2dcea80
 </TASK>

Crashes (2):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2024/05/20 17:33 android14-6.1 34a15d350726 c0f1611a .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1-perf BUG: scheduling while atomic in __skb_wait_for_more_packets
2024/04/06 05:58 android14-6.1 60534eef4739 ca620dd8 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 BUG: scheduling while atomic in __skb_wait_for_more_packets
* Struck through repros no longer work on HEAD.