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possible deadlock in bpf_trace_printk

Status: fixed on 2023/03/23 17:59
Labels: bpf trace (incorrect?)
Reported-by: syzbot+c49e17557ddb5725583d@syzkaller.appspotmail.com
Fix commit: 05b24ff9b2cf bpf: Prevent bpf program recursion for raw tracepoint probes
First crash: 364d, last: 108d

Cause bisection: introduced by (bisect log) :
commit dc1f7893a70fe403983bd8492f177bf993940e2c
Author: Peter Zijlstra <peterz@infradead.org>
Date: Wed Mar 30 11:06:54 2022 +0000

  locking/mutex: Make contention tracepoints more consistent wrt adaptive spinning

Crash: possible deadlock in bpf_trace_printk (log)
Repro: C syz .config

Fix bisection: fixed by (bisect log) :
commit 05b24ff9b2cfabfcfd951daaa915a036ab53c9e1
Author: Jiri Olsa <jolsa@kernel.org>
Date: Fri Sep 16 07:19:14 2022 +0000

  bpf: Prevent bpf program recursion for raw tracepoint probes

▶ ▼ Discussions (1)
Title Replies (including bot) Last reply
[syzbot] possible deadlock in bpf_trace_printk 2 (4) 2023/03/23 11:30
▶ ▼ Last patch testing requests (2)
Created Duration User Patch Repo Result
2022/06/11 00:56 18m hdanton@sina.com patch https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf.git d678cbd2f867 OK log
2022/06/10 15:17 9m hdanton@sina.com patch https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf.git d678cbd2f867 report log

Sample crash report:
============================================
WARNING: possible recursive locking detected
5.19.0-rc7-syzkaller-00139-g4ba1329cbb94 #0 Not tainted
--------------------------------------------
sshd/3600 is trying to acquire lock:
ffffffff8be0dfb8 (trace_printk_lock){....}-{2:2}, at: ____bpf_trace_printk kernel/trace/bpf_trace.c:388 [inline]
ffffffff8be0dfb8 (trace_printk_lock){....}-{2:2}, at: bpf_trace_printk+0xcf/0x170 kernel/trace/bpf_trace.c:374

but task is already holding lock:
ffffffff8be0dfb8 (trace_printk_lock){....}-{2:2}, at: ____bpf_trace_printk kernel/trace/bpf_trace.c:388 [inline]
ffffffff8be0dfb8 (trace_printk_lock){....}-{2:2}, at: bpf_trace_printk+0xcf/0x170 kernel/trace/bpf_trace.c:374

other info that might help us debug this:
 Possible unsafe locking scenario:

       CPU0
       ----
  lock(trace_printk_lock);
  lock(trace_printk_lock);

 *** DEADLOCK ***

 May be due to missing lock nesting notation

4 locks held by sshd/3600:
 #0: ffff888021c1c868 (&pipe->mutex/1){+.+.}-{3:3}, at: __pipe_lock fs/pipe.c:103 [inline]
 #0: ffff888021c1c868 (&pipe->mutex/1){+.+.}-{3:3}, at: pipe_read+0x139/0x1100 fs/pipe.c:244
 #1: ffffffff8bd87120 (rcu_read_lock){....}-{1:2}, at: bpf_trace_run2+0x0/0x340 kernel/trace/./bpf_trace.h:11
 #2: ffffffff8be0dfb8 (trace_printk_lock){....}-{2:2}, at: ____bpf_trace_printk kernel/trace/bpf_trace.c:388 [inline]
 #2: ffffffff8be0dfb8 (trace_printk_lock){....}-{2:2}, at: bpf_trace_printk+0xcf/0x170 kernel/trace/bpf_trace.c:374
 #3: ffffffff8bd87120 (rcu_read_lock){....}-{1:2}, at: bpf_trace_run2+0x0/0x340 kernel/trace/./bpf_trace.h:11

stack backtrace:
CPU: 1 PID: 3600 Comm: sshd Not tainted 5.19.0-rc7-syzkaller-00139-g4ba1329cbb94 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/29/2022
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0xcd/0x134 lib/dump_stack.c:106
 print_deadlock_bug kernel/locking/lockdep.c:2988 [inline]
 check_deadlock kernel/locking/lockdep.c:3031 [inline]
 validate_chain kernel/locking/lockdep.c:3816 [inline]
 __lock_acquire.cold+0x1f5/0x3b4 kernel/locking/lockdep.c:5053
 lock_acquire kernel/locking/lockdep.c:5665 [inline]
 lock_acquire+0x1ab/0x570 kernel/locking/lockdep.c:5630
 __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline]
 _raw_spin_lock_irqsave+0x39/0x50 kernel/locking/spinlock.c:162
 ____bpf_trace_printk kernel/trace/bpf_trace.c:388 [inline]
 bpf_trace_printk+0xcf/0x170 kernel/trace/bpf_trace.c:374
 bpf_prog_0605f9f479290f07+0x2f/0x33
 bpf_dispatcher_nop_func include/linux/bpf.h:869 [inline]
 __bpf_prog_run include/linux/filter.h:628 [inline]
 bpf_prog_run include/linux/filter.h:635 [inline]
 __bpf_trace_run kernel/trace/bpf_trace.c:2046 [inline]
 bpf_trace_run2+0x110/0x340 kernel/trace/bpf_trace.c:2083
 __bpf_trace_contention_begin+0xb5/0xf0 include/trace/events/lock.h:95
 trace_contention_begin.constprop.0+0xda/0x1b0 include/trace/events/lock.h:95
 __pv_queued_spin_lock_slowpath+0x103/0xb50 kernel/locking/qspinlock.c:405
 pv_queued_spin_lock_slowpath arch/x86/include/asm/paravirt.h:591 [inline]
 queued_spin_lock_slowpath arch/x86/include/asm/qspinlock.h:51 [inline]
 queued_spin_lock include/asm-generic/qspinlock.h:114 [inline]
 do_raw_spin_lock+0x200/0x2a0 kernel/locking/spinlock_debug.c:115
 __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:111 [inline]
 _raw_spin_lock_irqsave+0x41/0x50 kernel/locking/spinlock.c:162
 ____bpf_trace_printk kernel/trace/bpf_trace.c:388 [inline]
 bpf_trace_printk+0xcf/0x170 kernel/trace/bpf_trace.c:374
 bpf_prog_0605f9f479290f07+0x2f/0x33
 bpf_dispatcher_nop_func include/linux/bpf.h:869 [inline]
 __bpf_prog_run include/linux/filter.h:628 [inline]
 bpf_prog_run include/linux/filter.h:635 [inline]
 __bpf_trace_run kernel/trace/bpf_trace.c:2046 [inline]
 bpf_trace_run2+0x110/0x340 kernel/trace/bpf_trace.c:2083
 __bpf_trace_contention_begin+0xb5/0xf0 include/trace/events/lock.h:95
 trace_contention_begin+0xc0/0x150 include/trace/events/lock.h:95
 __mutex_lock_common kernel/locking/mutex.c:605 [inline]
 __mutex_lock+0x13c/0x1350 kernel/locking/mutex.c:747
 __pipe_lock fs/pipe.c:103 [inline]
 pipe_read+0x139/0x1100 fs/pipe.c:244
 call_read_iter include/linux/fs.h:2052 [inline]
 new_sync_read+0x4f9/0x5f0 fs/read_write.c:401
 vfs_read+0x492/0x5d0 fs/read_write.c:482
 ksys_read+0x1e8/0x250 fs/read_write.c:620
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f56d4a7c8fe
Code: c0 e9 e6 fe ff ff 50 48 8d 3d 0e c7 09 00 e8 c9 cf 01 00 66 0f 1f 84 00 00 00 00 00 64 8b 04 25 18 00 00 00 85 c0 75 14 0f 05 <48> 3d 00 f0 ff ff 77 5a c3 66 0f 1f 84 00 00 00 00 00 48 83 ec 28
RSP: 002b:00007fffca428bf8 EFLAGS: 00000246 ORIG_RAX: 0000000000000000
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f56d4a7c8fe
RDX: 0000000000004000 RSI: 00007fffca428c08 RDI: 0000000000000009
RBP: 000055e938bcc3d0 R08: 000055e938bbb710 R09: 00007fffca50b080
R10: 00007fffca50b0f0 R11: 0000000000000246 R12: 0000000000000027
R13: 000055e938bcafb0 R14: 00007fffca428c08 R15: 000055e938bc5e70
 </TASK>
------------[ cut here ]------------
WARNING: CPU: 1 PID: 3600 at kernel/bpf/helpers.c:791 try_get_fmt_tmp_buf kernel/bpf/helpers.c:791 [inline]
WARNING: CPU: 1 PID: 3600 at kernel/bpf/helpers.c:791 bpf_bprintf_prepare+0xf31/0x11a0 kernel/bpf/helpers.c:839
Modules linked in:
CPU: 1 PID: 3600 Comm: sshd Not tainted 5.19.0-rc7-syzkaller-00139-g4ba1329cbb94 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/29/2022
RIP: 0010:try_get_fmt_tmp_buf kernel/bpf/helpers.c:791 [inline]
RIP: 0010:bpf_bprintf_prepare+0xf31/0x11a0 kernel/bpf/helpers.c:839
Code: ff e8 b3 02 eb ff 48 83 7c 24 08 00 41 bd 04 00 00 00 0f 85 8a fa ff ff e8 9c 02 eb ff 8d 6b 03 e9 f7 f6 ff ff e8 8f 02 eb ff <0f> 0b 65 ff 0d ee d6 73 7e bf 01 00 00 00 41 bc f0 ff ff ff e8 d6
RSP: 0018:ffffc900032ceb08 EFLAGS: 00010093
RAX: 0000000000000000 RBX: 0000000000000002 RCX: 0000000000000000
RDX: ffff888025e09d80 RSI: ffffffff818f6a11 RDI: 0000000000000005
RBP: ffffc900032cec38 R08: 0000000000000005 R09: 0000000000000003
R10: 0000000000000004 R11: 0000000000000001 R12: 0000000000000003
R13: 0000000000000004 R14: ffffc900032cecf0 R15: 0000000000000003
FS:  00007f56d4e98800(0000) GS:ffff8880b9b00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fb73540c150 CR3: 0000000070855000 CR4: 0000000000350ee0
Call Trace:
 <TASK>
 ____bpf_trace_printk kernel/trace/bpf_trace.c:383 [inline]
 bpf_trace_printk+0xab/0x170 kernel/trace/bpf_trace.c:374
 bpf_prog_0605f9f479290f07+0x2f/0x33
 bpf_dispatcher_nop_func include/linux/bpf.h:869 [inline]
 __bpf_prog_run include/linux/filter.h:628 [inline]
 bpf_prog_run include/linux/filter.h:635 [inline]
 __bpf_trace_run kernel/trace/bpf_trace.c:2046 [inline]
 bpf_trace_run2+0x110/0x340 kernel/trace/bpf_trace.c:2083
 __bpf_trace_contention_begin+0xb5/0xf0 include/trace/events/lock.h:95
 trace_contention_begin.constprop.0+0xda/0x1b0 include/trace/events/lock.h:95
 __pv_queued_spin_lock_slowpath+0x103/0xb50 kernel/locking/qspinlock.c:405
 pv_queued_spin_lock_slowpath arch/x86/include/asm/paravirt.h:591 [inline]
 queued_spin_lock_slowpath arch/x86/include/asm/qspinlock.h:51 [inline]
 queued_spin_lock include/asm-generic/qspinlock.h:114 [inline]
 do_raw_spin_lock+0x200/0x2a0 kernel/locking/spinlock_debug.c:115
 __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:111 [inline]
 _raw_spin_lock_irqsave+0x41/0x50 kernel/locking/spinlock.c:162
 ____bpf_trace_printk kernel/trace/bpf_trace.c:388 [inline]
 bpf_trace_printk+0xcf/0x170 kernel/trace/bpf_trace.c:374
 bpf_prog_0605f9f479290f07+0x2f/0x33
 bpf_dispatcher_nop_func include/linux/bpf.h:869 [inline]
 __bpf_prog_run include/linux/filter.h:628 [inline]
 bpf_prog_run include/linux/filter.h:635 [inline]
 __bpf_trace_run kernel/trace/bpf_trace.c:2046 [inline]
 bpf_trace_run2+0x110/0x340 kernel/trace/bpf_trace.c:2083
 __bpf_trace_contention_begin+0xb5/0xf0 include/trace/events/lock.h:95
 trace_contention_begin.constprop.0+0xda/0x1b0 include/trace/events/lock.h:95
 __pv_queued_spin_lock_slowpath+0x103/0xb50 kernel/locking/qspinlock.c:405
 pv_queued_spin_lock_slowpath arch/x86/include/asm/paravirt.h:591 [inline]
 queued_spin_lock_slowpath arch/x86/include/asm/qspinlock.h:51 [inline]
 queued_spin_lock include/asm-generic/qspinlock.h:114 [inline]
 do_raw_spin_lock+0x200/0x2a0 kernel/locking/spinlock_debug.c:115
 __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:111 [inline]
 _raw_spin_lock_irqsave+0x41/0x50 kernel/locking/spinlock.c:162
 ____bpf_trace_printk kernel/trace/bpf_trace.c:388 [inline]
 bpf_trace_printk+0xcf/0x170 kernel/trace/bpf_trace.c:374
 bpf_prog_0605f9f479290f07+0x2f/0x33
 bpf_dispatcher_nop_func include/linux/bpf.h:869 [inline]
 __bpf_prog_run include/linux/filter.h:628 [inline]
 bpf_prog_run include/linux/filter.h:635 [inline]
 __bpf_trace_run kernel/trace/bpf_trace.c:2046 [inline]
 bpf_trace_run2+0x110/0x340 kernel/trace/bpf_trace.c:2083
 __bpf_trace_contention_begin+0xb5/0xf0 include/trace/events/lock.h:95
 trace_contention_begin.constprop.0+0xda/0x1b0 include/trace/events/lock.h:95
 __pv_queued_spin_lock_slowpath+0x103/0xb50 kernel/locking/qspinlock.c:405
 pv_queued_spin_lock_slowpath arch/x86/include/asm/paravirt.h:591 [inline]
 queued_spin_lock_slowpath arch/x86/include/asm/qspinlock.h:51 [inline]
 queued_spin_lock include/asm-generic/qspinlock.h:114 [inline]
 do_raw_spin_lock+0x200/0x2a0 kernel/locking/spinlock_debug.c:115
 __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:111 [inline]
 _raw_spin_lock_irqsave+0x41/0x50 kernel/locking/spinlock.c:162
 ____bpf_trace_printk kernel/trace/bpf_trace.c:388 [inline]
 bpf_trace_printk+0xcf/0x170 kernel/trace/bpf_trace.c:374
 bpf_prog_0605f9f479290f07+0x2f/0x33
 bpf_dispatcher_nop_func include/linux/bpf.h:869 [inline]
 __bpf_prog_run include/linux/filter.h:628 [inline]
 bpf_prog_run include/linux/filter.h:635 [inline]
 __bpf_trace_run kernel/trace/bpf_trace.c:2046 [inline]
 bpf_trace_run2+0x110/0x340 kernel/trace/bpf_trace.c:2083
 __bpf_trace_contention_begin+0xb5/0xf0 include/trace/events/lock.h:95
 trace_contention_begin+0xc0/0x150 include/trace/events/lock.h:95
 __mutex_lock_common kernel/locking/mutex.c:605 [inline]
 __mutex_lock+0x13c/0x1350 kernel/locking/mutex.c:747
 __pipe_lock fs/pipe.c:103 [inline]
 pipe_read+0x139/0x1100 fs/pipe.c:244
 call_read_iter include/linux/fs.h:2052 [inline]
 new_sync_read+0x4f9/0x5f0 fs/read_write.c:401
 vfs_read+0x492/0x5d0 fs/read_write.c:482
 ksys_read+0x1e8/0x250 fs/read_write.c:620
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f56d4a7c8fe
Code: c0 e9 e6 fe ff ff 50 48 8d 3d 0e c7 09 00 e8 c9 cf 01 00 66 0f 1f 84 00 00 00 00 00 64 8b 04 25 18 00 00 00 85 c0 75 14 0f 05 <48> 3d 00 f0 ff ff 77 5a c3 66 0f 1f 84 00 00 00 00 00 48 83 ec 28
RSP: 002b:00007fffca428bf8 EFLAGS: 00000246 ORIG_RAX: 0000000000000000
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f56d4a7c8fe
RDX: 0000000000004000 RSI: 00007fffca428c08 RDI: 0000000000000009
RBP: 000055e938bcc3d0 R08: 000055e938bbb710 R09: 00007fffca50b080
R10: 00007fffca50b0f0 R11: 0000000000000246 R12: 0000000000000028
R13: 000055e938bcafb0 R14: 00007fffca428c08 R15: 000055e938bc5e70
 </TASK>

Crashes (68):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets Manager Title
2022/07/23 04:03 upstream 4ba1329cbb94 22343af4 .config strace log report syz C ci-upstream-kasan-gce-root possible deadlock in bpf_trace_printk
2023/01/01 00:00 net-old d039535850ee ab32d508 .config strace log report syz C [disk image] [vmlinux] [kernel image] ci-upstream-net-this-kasan-gce possible deadlock in bpf_trace_printk
2023/01/01 00:00 bpf 45435d8da71f ab32d508 .config strace log report syz C [disk image] [vmlinux] [kernel image] ci-upstream-bpf-kasan-gce possible deadlock in bpf_trace_printk
2022/06/09 00:39 bpf d678cbd2f867 b2706118 .config strace log report syz C ci-upstream-bpf-kasan-gce possible deadlock in bpf_trace_printk
2022/06/09 00:08 net-old f5826c8c9d57 b2706118 .config strace log report syz C ci-upstream-net-this-kasan-gce possible deadlock in bpf_trace_printk
2023/01/01 07:44 net-next-old c183e6c3ec34 ab32d508 .config strace log report syz C [disk image] [vmlinux] [kernel image] ci-upstream-net-kasan-gce possible deadlock in bpf_trace_printk
2022/06/09 01:27 net-next-old da6e113ff010 b2706118 .config strace log report syz C ci-upstream-net-kasan-gce possible deadlock in bpf_trace_printk
2022/06/09 00:44 bpf-next d352bd889b6a b2706118 .config strace log report syz C ci-upstream-bpf-next-kasan-gce possible deadlock in bpf_trace_printk
2022/09/18 04:00 upstream a335366bad13 dd9a85ff .config console log report syz ci-upstream-kasan-gce-root possible deadlock in bpf_trace_printk
2022/09/18 04:13 net-old 96628951869c dd9a85ff .config console log report syz [disk image] [vmlinux] ci-upstream-net-this-kasan-gce possible deadlock in bpf_trace_printk
2022/09/18 04:34 net-next-old 44a8535fb87c dd9a85ff .config console log report syz [disk image] [vmlinux] ci-upstream-net-kasan-gce possible deadlock in bpf_trace_printk
2022/09/18 03:33 upstream a335366bad13 dd9a85ff .config strace log report syz C ci-upstream-kasan-gce-smack-root possible deadlock in bpf_trace_printk
2023/02/20 01:29 upstream c9c3395d5e3d bcdf85f8 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-smack-root possible deadlock in bpf_trace_printk
2023/02/19 11:28 upstream 925cf0457d7e bcdf85f8 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-smack-root possible deadlock in bpf_trace_printk
2023/02/17 04:14 upstream 3ac88fa4605e 851bc19a .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-selinux-root possible deadlock in bpf_trace_printk
2023/01/11 23:58 upstream 7dd4b804e080 96166539 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-smack-root possible deadlock in bpf_trace_printk
2022/12/26 16:06 upstream 72a85e2b0a1e 9da18ae8 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-selinux-root possible deadlock in bpf_trace_printk
2022/12/04 17:25 upstream 97ee9d1c1696 e080de16 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-smack-root possible deadlock in bpf_trace_printk
2022/10/06 09:16 upstream 833477fce7a1 2c6543ad .config console log report info [disk image] [vmlinux] ci-upstream-kasan-gce-selinux-root possible deadlock in bpf_trace_printk
2022/10/03 22:34 upstream 4fe89d07dcc2 feb56351 .config console log report info [disk image] [vmlinux] ci-upstream-kasan-gce-selinux-root possible deadlock in bpf_trace_printk
2022/09/24 00:57 upstream 1707c39ae309 0042f2b4 .config console log report info [disk image] [vmlinux] ci-upstream-kasan-gce-smack-root possible deadlock in bpf_trace_printk
2022/09/23 12:11 upstream bf682942cd26 0042f2b4 .config console log report info [disk image] [vmlinux] ci-upstream-kasan-gce-smack-root possible deadlock in bpf_trace_printk
2022/09/12 09:35 upstream 4ed9c1e971b1 356d8217 .config console log report info ci-upstream-kasan-gce-root possible deadlock in bpf_trace_printk
2022/09/11 20:04 upstream b96fbd602d35 356d8217 .config console log report info [disk image] [vmlinux] ci-upstream-kasan-gce-smack-root possible deadlock in bpf_trace_printk
2022/09/05 08:23 upstream 7e18e42e4b28 28811d0a .config console log report info [disk image] [vmlinux] ci-upstream-kasan-gce-root possible deadlock in bpf_trace_printk
2022/09/01 13:11 upstream c5e4d5e99162 b01ec571 .config console log report info ci-upstream-kasan-gce-smack-root possible deadlock in bpf_trace_printk
2022/08/20 04:09 upstream 4c2d0b039c5c 26a13b38 .config console log report info ci-upstream-kasan-gce-smack-root possible deadlock in bpf_trace_printk
2022/08/17 20:04 upstream 7ebfc85e2cd7 4e72d229 .config console log report info ci-upstream-kasan-gce-root possible deadlock in bpf_trace_printk
2022/08/16 20:00 upstream 7ebfc85e2cd7 7a7cb304 .config console log report info ci-upstream-kasan-gce-smack-root possible deadlock in bpf_trace_printk
2022/08/16 00:27 upstream 7ebfc85e2cd7 8dfcaa3d .config console log report info ci-upstream-kasan-gce-root possible deadlock in bpf_trace_printk
2022/07/24 08:17 upstream 515f71412bb7 22343af4 .config console log report info ci-upstream-kasan-gce-selinux-root possible deadlock in bpf_trace_printk
2022/07/24 07:40 upstream 515f71412bb7 22343af4 .config console log report info ci-upstream-kasan-gce-smack-root possible deadlock in bpf_trace_printk
2022/07/10 14:31 upstream b1c428b6c368 b5765a15 .config console log report info ci-upstream-kasan-gce-selinux-root possible deadlock in bpf_trace_printk
2022/07/07 17:14 upstream 9f09069cde34 bff65f44 .config console log report info ci-upstream-kasan-gce-smack-root possible deadlock in bpf_trace_printk
2022/07/05 16:16 upstream c1084b6c5620 bff65f44 .config console log report info ci-upstream-kasan-gce-selinux-root possible deadlock in bpf_trace_printk
2022/06/28 01:15 upstream 941e3e791269 ef82eb2c .config console log report info ci-upstream-kasan-gce-selinux-root possible deadlock in bpf_trace_printk
2022/06/21 09:20 upstream 78ca55889a54 0fc5c330 .config console log report info ci-upstream-kasan-gce-selinux-root possible deadlock in bpf_trace_printk
2022/06/16 07:10 upstream 979086f5e006 1719ee24 .config console log report info ci-upstream-kasan-gce-smack-root possible deadlock in bpf_trace_printk
2022/06/11 00:24 upstream 874c8ca1e60b 0d5abf15 .config console log report info ci-upstream-kasan-gce-root possible deadlock in bpf_trace_printk
2023/02/19 03:31 upstream 5e725d112e1a bcdf85f8 .config console log report info ci-qemu-upstream-386 possible deadlock in bpf_trace_printk
2023/02/19 01:42 upstream 5e725d112e1a bcdf85f8 .config console log report info ci-qemu-upstream-386 possible deadlock in bpf_trace_printk
2022/07/24 07:06 upstream 4a57a8400075 22343af4 .config console log report info ci-qemu-upstream-386 possible deadlock in bpf_trace_printk
2023/02/17 05:50 bpf b963d9d5b943 851bc19a .config console log report info ci-upstream-bpf-kasan-gce possible deadlock in bpf_trace_printk
2022/11/04 04:28 net-old 9521c9d6a53d 6d752409 .config console log report info ci-upstream-net-this-kasan-gce possible deadlock in bpf_trace_printk
2022/10/05 14:39 net-old 0326074ff465 267e3bb1 .config console log report info [disk image] [vmlinux] ci-upstream-net-this-kasan-gce possible deadlock in bpf_trace_printk
2022/08/28 01:22 net-old ebe5555c2f34 07177916 .config console log report info ci-upstream-net-this-kasan-gce possible deadlock in bpf_trace_printk
2022/08/27 14:32 net-old 7498a457ecf7 07177916 .config console log report info ci-upstream-net-this-kasan-gce possible deadlock in bpf_trace_printk
2022/08/16 22:47 net-old ae806c780557 7a7cb304 .config console log report info ci-upstream-net-this-kasan-gce possible deadlock in bpf_trace_printk
2022/07/26 23:37 net-old 9b134b1694ec 279b89c2 .config console log report info ci-upstream-net-this-kasan-gce possible deadlock in bpf_trace_printk
2022/07/24 11:51 net-old 4d8f24eeedc5 22343af4 .config console log report info ci-upstream-net-this-kasan-gce possible deadlock in bpf_trace_printk
2022/07/19 22:31 net-old b3fcfc4f0c50 72a3cc0c .config console log report info ci-upstream-net-this-kasan-gce possible deadlock in bpf_trace_printk
2022/07/16 10:52 net-old 11052589cf5c 95cb00d1 .config console log report info ci-upstream-net-this-kasan-gce possible deadlock in bpf_trace_printk
2022/07/03 00:02 net-old d28b25a62a47 1434eec0 .config console log report info ci-upstream-net-this-kasan-gce possible deadlock in bpf_trace_printk
2022/06/18 02:38 net-old b4a028c4d031 cb58b3b2 .config console log report info ci-upstream-net-this-kasan-gce possible deadlock in bpf_trace_printk
2022/06/08 23:38 net-old f5826c8c9d57 b2706118 .config console log report info ci-upstream-net-this-kasan-gce possible deadlock in bpf_trace_printk
2022/11/12 12:20 net-next-old 2cf7e87fc459 3ead01ad .config console log report info ci-upstream-net-kasan-gce possible deadlock in bpf_trace_printk
2022/09/13 06:23 bpf-next 1bfe26fb0827 f371ed7e .config console log report info ci-upstream-bpf-next-kasan-gce possible deadlock in bpf_trace_printk
2022/09/02 19:06 net-next-old c3f760ef1287 25194605 .config console log report info ci-upstream-net-kasan-gce possible deadlock in bpf_trace_printk
2022/08/26 01:59 net-next-old c19d893fbf3f 9b5bf4cd .config console log report info ci-upstream-net-kasan-gce possible deadlock in bpf_trace_printk
2022/08/20 02:05 net-next-old 268603d79cc4 26a13b38 .config console log report info ci-upstream-net-kasan-gce possible deadlock in bpf_trace_printk
2022/08/14 06:06 net-next-old 7ebfc85e2cd7 8dfcaa3d .config console log report info ci-upstream-net-kasan-gce possible deadlock in bpf_trace_printk
2022/07/18 00:00 net-next-old 2acd1022549e 95cb00d1 .config console log report info ci-upstream-net-kasan-gce possible deadlock in bpf_trace_printk
2022/06/28 03:38 net-next-old c83bc86a0596 ef82eb2c .config console log report info ci-upstream-net-kasan-gce possible deadlock in bpf_trace_printk
2022/12/12 05:29 linux-next 591cd61541b9 67be1ae7 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root possible deadlock in bpf_trace_printk
2022/08/14 20:39 linux-next 6c8f479764eb 8dfcaa3d .config console log report info ci-upstream-linux-next-kasan-gce-root possible deadlock in bpf_trace_printk
2022/08/01 10:37 linux-next cb71b93c2dc3 fef302b1 .config console log report info ci-upstream-linux-next-kasan-gce-root possible deadlock in bpf_trace_printk
2022/07/24 06:57 linux-next cb71b93c2dc3 22343af4 .config console log report info ci-upstream-linux-next-kasan-gce-root possible deadlock in bpf_trace_printk
2022/07/13 16:21 linux-next cb71b93c2dc3 5d921b08 .config console log report info ci-upstream-linux-next-kasan-gce-root possible deadlock in bpf_trace_printk
* Struck through repros no longer work on HEAD.