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AJvYcCXgDr80IcXgR/1C3EyfMIrZmOVdBVoVYKKRVK0Bm1hN7FIc+nvux4aTF0BM05+n5YDMA/Yb200Zf68v5bI=@vger.kernel.org X-Gm-Message-State: AOJu0Yxkm+Jn4jqYlqYLMYsUlKNa1VlI0n0QyoO2SIiw9bHCqQCD1h/W rFGmN/DyPuBiUb/Joip2c4pq/WgEcRIAw5Q3YdbzA26J/H754G6YGM1splQHlUGZT/I9+rTByzj T6GdyMfBgvQsT+nF1B6hSClriKxo/uPAR3n0Lsy1JTG2PU3EoYJRd7Xk= X-Google-Smtp-Source: AGHT+IEjnvR5ByVSPyVUq9+p2whtrEtlxchPuYaJVsNntqJDXdPWuRpF0l/RSgHxrJ6LgI/bmmVluWOXZWOxSbDXoVpCM1LyH5KN Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a05:6e02:1a4b:b0:39f:5e12:1dde with SMTP id e9e14a558f8ab-3a4ed2f2830mr252825045ab.21.1730513884658; Fri, 01 Nov 2024 19:18:04 -0700 (PDT) Date: Fri, 01 Nov 2024 19:18:04 -0700 In-Reply-To: X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <67258bdc.050a0220.3c8d68.091e.GAE@google.com> Subject: Re: [syzbot] [bpf?] WARNING: locking bug in bpf_map_put From: syzbot To: eadavis@qq.com, linux-kernel@vger.kernel.org, syzkaller-bugs@googlegroups.com Content-Type: text/plain; charset="UTF-8" Hello, syzbot has tested the proposed patch but the reproducer is still triggering an issue: WARNING: locking bug in bpf_map_put ============================= [ BUG: Invalid wait context ] 6.12.0-rc5-syzkaller-00291-g05b92660cdfe #0 Not tainted ----------------------------- syz.0.15/6647 is trying to lock: ffffffff8e9b57d8 (map_idr_lock){+...}-{3:3}, at: bpf_map_free_id kernel/bpf/syscall.c:380 [inline] ffffffff8e9b57d8 (map_idr_lock){+...}-{3:3}, at: bpf_map_put+0x9a/0x380 kernel/bpf/syscall.c:808 other info that might help us debug this: context-{5:5} 2 locks held by syz.0.15/6647: #0: ffffffff8e937de0 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:337 [inline] #0: ffffffff8e937de0 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:849 [inline] #0: ffffffff8e937de0 (rcu_read_lock){....}-{1:3}, at: map_delete_elem+0x338/0x5c0 kernel/bpf/syscall.c:1677 #1: ffff88807caca0f8 (&htab->lockdep_key){....}-{2:2}, at: htab_lock_bucket+0x1a4/0x370 kernel/bpf/hashtab.c:167 stack backtrace: CPU: 0 UID: 0 PID: 6647 Comm: syz.0.15 Not tainted 6.12.0-rc5-syzkaller-00291-g05b92660cdfe #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 Call Trace: __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:4802 [inline] check_wait_context kernel/locking/lockdep.c:4874 [inline] __lock_acquire+0x15a8/0x2100 kernel/locking/lockdep.c:5152 lock_acquire+0x1ed/0x550 kernel/locking/lockdep.c:5825 __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline] _raw_spin_lock_irqsave+0xd5/0x120 kernel/locking/spinlock.c:162 bpf_map_free_id kernel/bpf/syscall.c:380 [inline] bpf_map_put+0x9a/0x380 kernel/bpf/syscall.c:808 htab_put_fd_value kernel/bpf/hashtab.c:911 [inline] free_htab_elem+0xbb/0x460 kernel/bpf/hashtab.c:946 htab_map_delete_elem+0x576/0x6b0 kernel/bpf/hashtab.c:1438 map_delete_elem+0x431/0x5c0 kernel/bpf/syscall.c:1678 __sys_bpf+0x598/0x810 kernel/bpf/syscall.c:5644 __do_sys_bpf kernel/bpf/syscall.c:5760 [inline] __se_sys_bpf kernel/bpf/syscall.c:5758 [inline] __x64_sys_bpf+0x7c/0x90 kernel/bpf/syscall.c:5758 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: 0033:0x7ff3cef7e719 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:00007ff3cfda7038 EFLAGS: 00000246 ORIG_RAX: 0000000000000141 RAX: ffffffffffffffda RBX: 00007ff3cf135f80 RCX: 00007ff3cef7e719 RDX: 0000000000000020 RSI: 0000000020000300 RDI: 0000000000000003 RBP: 00007ff3ceff132e R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007ff3cf135f80 R15: 00007ffd7e2203e8 Tested on: commit: 05b92660 Merge tag 'pci-v6.12-fixes-2' of git://git.ke.. git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=145a9630580000 kernel config: https://syzkaller.appspot.com/x/.config?x=a6b0d046ffd0e9c1 dashboard link: https://syzkaller.appspot.com/bug?extid=d2adb332fe371b0595e3 compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 Note: no patches were applied.