syzbot


WARNING: locking bug in __task_rq_lock

Status: auto-obsoleted due to no activity on 2025/05/12 22:33
Subsystems: net
[Documentation on labels]
Reported-by: syzbot+bb50a872bcd6dacdf184@syzkaller.appspotmail.com
First crash: 233d, last: 104d
Cause bisection: failed (error log, bisect log)
  
Fix bisection: failed (error log, bisect log)
  
Discussions (1)
Title Replies (including bot) Last reply
[syzbot] [net?] WARNING: locking bug in __task_rq_lock 0 (2) 2024/11/28 05:05
Similar bugs (1)
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
upstream BUG: unable to handle kernel paging request in __task_rq_lock net 18 117d 234d 0/28 auto-obsoleted due to no activity on 2025/04/27 11:04
Last patch testing requests (2)
Created Duration User Patch Repo Result
2025/05/12 22:00 32m retest repro upstream OK log
2025/01/02 04:19 23m retest repro upstream report log

Sample crash report:
=============================
[ BUG: Invalid wait context ]
6.13.0-syzkaller-09760-g69e858e0b8b2 #0 Not tainted
-----------------------------
syz.1.4376/23285 is trying to lock:
ffff8880b863e918 (base_crng.lock){..-.}-{3:3}, at: raw_spin_rq_lock_nested+0x2a/0x140 kernel/sched/core.c:598
other info that might help us debug this:
context-{5:5}
3 locks held by syz.1.4376/23285:
 #0: ffff8880478e7950 (&u->iolock){+.+.}-{4:4}, at: __unix_dgram_recvmsg+0x246/0x12f0 net/unix/af_unix.c:2426
 #1: ffff8880478e7a98 (&u->peer_wait){+.+.}-{3:3}, at: __wake_up_common_lock+0x25/0x1e0 kernel/sched/wait.c:105
 #2: ffff88801cbde428 (&p->pi_lock){-.-.}-{2:2}, at: class_raw_spinlock_irqsave_constructor include/linux/spinlock.h:551 [inline]
 #2: ffff88801cbde428 (&p->pi_lock){-.-.}-{2:2}, at: try_to_wake_up+0xc2/0x1470 kernel/sched/core.c:4213
stack backtrace:
CPU: 1 UID: 0 PID: 23285 Comm: syz.1.4376 Not tainted 6.13.0-syzkaller-09760-g69e858e0b8b2 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:94 [inline]
 dump_stack_lvl+0x241/0x360 lib/dump_stack.c:120
 print_lock_invalid_wait_context kernel/locking/lockdep.c:4828 [inline]
 check_wait_context kernel/locking/lockdep.c:4900 [inline]
 __lock_acquire+0x15a8/0x2100 kernel/locking/lockdep.c:5178
 lock_acquire+0x1ed/0x550 kernel/locking/lockdep.c:5851
 _raw_spin_lock_nested+0x31/0x40 kernel/locking/spinlock.c:378
 raw_spin_rq_lock_nested+0x2a/0x140 kernel/sched/core.c:598
 raw_spin_rq_lock kernel/sched/sched.h:1521 [inline]
 __task_rq_lock+0xdf/0x3e0 kernel/sched/core.c:676
 ttwu_runnable kernel/sched/core.c:3789 [inline]
 try_to_wake_up+0x170/0x1470 kernel/sched/core.c:4243
 autoremove_wake_function+0x16/0x110 kernel/sched/wait.c:384
 __wake_up_common kernel/sched/wait.c:89 [inline]
 __wake_up_common_lock+0x132/0x1e0 kernel/sched/wait.c:106
 __unix_dgram_recvmsg+0x5f4/0x12f0 net/unix/af_unix.c:2456
 sock_recvmsg_nosec+0x190/0x1d0 net/socket.c:1018
 ____sys_recvmsg+0x3cd/0x480 net/socket.c:2786
 ___sys_recvmsg net/socket.c:2830 [inline]
 do_recvmmsg+0x426/0xab0 net/socket.c:2925
 __sys_recvmmsg net/socket.c:2999 [inline]
 __do_sys_recvmmsg net/socket.c:3022 [inline]
 __se_sys_recvmmsg net/socket.c:3015 [inline]
 __x64_sys_recvmmsg+0x199/0x250 net/socket.c:3015
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fdf1138cda9
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 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 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fdf0f1d5038 EFLAGS: 00000246 ORIG_RAX: 000000000000012b
RAX: ffffffffffffffda RBX: 00007fdf115a6080 RCX: 00007fdf1138cda9
RDX: 03fffffffffffeda RSI: 00000000200000c0 RDI: 0000000000000003
RBP: 00007fdf1140e2a0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000002 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000001 R14: 00007fdf115a6080 R15: 00007ffeac0015f8
 </TASK>
==================================================================
BUG: KASAN: wild-memory-access in instrument_atomic_read include/linux/instrumented.h:68 [inline]
BUG: KASAN: wild-memory-access in _test_bit include/asm-generic/bitops/instrumented-non-atomic.h:141 [inline]
BUG: KASAN: wild-memory-access in __lock_acquire+0xc94/0x2100 kernel/locking/lockdep.c:5198
Read of size 8 at addr 1fffffff8773ec40 by task syz.1.4376/23285

CPU: 1 UID: 0 PID: 23285 Comm: syz.1.4376 Not tainted 6.13.0-syzkaller-09760-g69e858e0b8b2 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:94 [inline]
 dump_stack_lvl+0x241/0x360 lib/dump_stack.c:120
 print_report+0xe8/0x550 mm/kasan/report.c:492
 kasan_report+0x143/0x180 mm/kasan/report.c:602
 kasan_check_range+0x282/0x290 mm/kasan/generic.c:189
 instrument_atomic_read include/linux/instrumented.h:68 [inline]
 _test_bit include/asm-generic/bitops/instrumented-non-atomic.h:141 [inline]
 __lock_acquire+0xc94/0x2100 kernel/locking/lockdep.c:5198
 lock_acquire+0x1ed/0x550 kernel/locking/lockdep.c:5851
 _raw_spin_lock_nested+0x31/0x40 kernel/locking/spinlock.c:378
 raw_spin_rq_lock_nested+0x2a/0x140 kernel/sched/core.c:598
 raw_spin_rq_lock kernel/sched/sched.h:1521 [inline]
 __task_rq_lock+0xdf/0x3e0 kernel/sched/core.c:676
 ttwu_runnable kernel/sched/core.c:3789 [inline]
 try_to_wake_up+0x170/0x1470 kernel/sched/core.c:4243
 autoremove_wake_function+0x16/0x110 kernel/sched/wait.c:384
 __wake_up_common kernel/sched/wait.c:89 [inline]
 __wake_up_common_lock+0x132/0x1e0 kernel/sched/wait.c:106
 __unix_dgram_recvmsg+0x5f4/0x12f0 net/unix/af_unix.c:2456
 sock_recvmsg_nosec+0x190/0x1d0 net/socket.c:1018
 ____sys_recvmsg+0x3cd/0x480 net/socket.c:2786
 ___sys_recvmsg net/socket.c:2830 [inline]
 do_recvmmsg+0x426/0xab0 net/socket.c:2925
 __sys_recvmmsg net/socket.c:2999 [inline]
 __do_sys_recvmmsg net/socket.c:3022 [inline]
 __se_sys_recvmmsg net/socket.c:3015 [inline]
 __x64_sys_recvmmsg+0x199/0x250 net/socket.c:3015
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fdf1138cda9
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 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 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fdf0f1d5038 EFLAGS: 00000246 ORIG_RAX: 000000000000012b
RAX: ffffffffffffffda RBX: 00007fdf115a6080 RCX: 00007fdf1138cda9
RDX: 03fffffffffffeda RSI: 00000000200000c0 RDI: 0000000000000003
RBP: 00007fdf1140e2a0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000002 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000001 R14: 00007fdf115a6080 R15: 00007ffeac0015f8
 </TASK>
==================================================================

Crashes (32):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2025/02/01 14:40 upstream 69e858e0b8b2 0dff8567 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root WARNING: locking bug in __task_rq_lock
2025/01/21 23:10 upstream b9d8a295ed6b 6e87cfa2 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root WARNING: locking bug in __task_rq_lock
2025/01/11 08:56 upstream e0daef7de1ac 6dbc6a9b .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root WARNING: locking bug in __task_rq_lock
2025/01/07 12:19 upstream fbfd64d25c7a f3558dbf .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root WARNING: locking bug in __task_rq_lock
2024/12/19 04:16 upstream c061cf420ded 1432fc84 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root WARNING: locking bug in __task_rq_lock
2024/12/16 16:36 upstream 78d4f34e2115 f93b2b55 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root WARNING: locking bug in __task_rq_lock
2024/12/15 04:45 upstream a0e3919a2df2 7cbfbb3a .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root WARNING: locking bug in __task_rq_lock
2024/12/12 13:31 upstream 231825b2e1ff 941924eb .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root WARNING: locking bug in __task_rq_lock
2024/12/02 09:13 upstream 40384c840ea1 68914665 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root WARNING: locking bug in __task_rq_lock
2024/11/28 05:04 upstream aaf20f870da0 5df23865 .config console log report syz / log [disk image] [vmlinux] [kernel image] [mounted in repro] ci-upstream-kasan-gce-root WARNING: locking bug in __task_rq_lock
2024/11/26 09:44 upstream 2c22dc1ee3a1 11dbc254 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root WARNING: locking bug in __task_rq_lock
2024/11/17 21:37 upstream f66d6acccbc0 cfe3a04a .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root WARNING: locking bug in __task_rq_lock
2024/11/14 21:58 upstream 0a9b9d17f3a7 77f3eeb7 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root WARNING: locking bug in __task_rq_lock
2024/11/14 06:14 upstream f1b785f4c787 a8c99394 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root WARNING: locking bug in __task_rq_lock
2024/11/12 23:03 upstream 3022e9d00ebe 75bb1b32 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root WARNING: locking bug in __task_rq_lock
2024/11/12 09:13 upstream 2d5404caa8c7 75bb1b32 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root WARNING: locking bug in __task_rq_lock
2024/11/11 17:41 upstream 2d5404caa8c7 97fe5517 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root WARNING: locking bug in __task_rq_lock
2024/11/11 02:39 upstream a9cda7c0ffed 6b856513 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root WARNING: locking bug in __task_rq_lock
2024/10/31 02:38 upstream 4236f913808c fb888278 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root WARNING: locking bug in __task_rq_lock
2024/10/28 22:28 upstream 819837584309 9efb3cc7 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root WARNING: locking bug in __task_rq_lock
2024/10/27 23:12 upstream 284a2f899676 65e8686b .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root WARNING: locking bug in __task_rq_lock
2024/10/27 14:53 upstream 850925a8133c 65e8686b .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root WARNING: locking bug in __task_rq_lock
2024/10/22 21:59 upstream c2ee9f594da8 9d74f456 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root WARNING: locking bug in __task_rq_lock
2024/10/10 01:16 upstream 75b607fab38d 0278d004 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root WARNING: locking bug in __task_rq_lock
2024/10/06 09:34 upstream fc20a3e57247 d7906eff .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root WARNING: locking bug in __task_rq_lock
2024/10/06 03:48 upstream fc20a3e57247 d7906eff .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root WARNING: locking bug in __task_rq_lock
2024/09/30 18:16 upstream 9852d85ec9d4 bbd4e0a4 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root WARNING: locking bug in __task_rq_lock
2024/09/28 21:50 upstream 3efc57369a0c ba29ff75 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root WARNING: locking bug in __task_rq_lock
2024/09/27 09:29 upstream 075dbe9f6e3c 9314348a .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root WARNING: locking bug in __task_rq_lock
2024/09/27 08:27 upstream 075dbe9f6e3c 9314348a .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root WARNING: locking bug in __task_rq_lock
2024/09/26 07:54 upstream aa486552a110 0d19f247 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root WARNING: locking bug in __task_rq_lock
2024/09/25 00:55 upstream 97d8894b6f4c 5643e0e9 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root WARNING: locking bug in __task_rq_lock
* Struck through repros no longer work on HEAD.