From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-io1-f79.google.com (mail-io1-f79.google.com [209.85.166.79]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 2E67A16CD01 for ; Tue, 18 Jun 2024 21:43:21 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.166.79 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1718747003; cv=none; b=EBkTNSIaDdzCrnmrmu8b0kjAkdPaGfIRlcpPiJY5ZfR3TJ1EfwHmUHJQvhXli4NqDHwNgZuTE4JN4aW1LOQYzqJajeEg9H72NkGi0bh7oq0jGXPKnK8p1axVht+fBRowP3FFHyCKIAphDS2u4LGOmnPB4+lljg79jRr2Sje1IRc= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1718747003; c=relaxed/simple; bh=3VVHlOcF60rYJnvvbFTxHYeqO5l5R/y3doWXjt7aPYw=; h=MIME-Version:Date:Message-ID:Subject:From:To:Content-Type; b=KpXuCErDEk/ntAwb5rPZ65O137sn78s41ZQSX5iyVCoradWR5V3pyAI+mUNCqBLeNFkYpFpTVdjZwxPFQ/6UW5HkjmzQYJCiGw2EoGUI653VzGhIjmZOjwHkVVweCsPelj2t4G+Ek9YiKIHvVSGnBTJFAHfwIfJwgrgJnfgRjP4= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=fail (p=none dis=none) header.from=syzkaller.appspotmail.com; spf=pass smtp.mailfrom=M3KW2WVRGUFZ5GODRSRYTGD7.apphosting.bounces.google.com; arc=none smtp.client-ip=209.85.166.79 Authentication-Results: smtp.subspace.kernel.org; dmarc=fail (p=none dis=none) header.from=syzkaller.appspotmail.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=M3KW2WVRGUFZ5GODRSRYTGD7.apphosting.bounces.google.com Received: by mail-io1-f79.google.com with SMTP id ca18e2360f4ac-7eb7c3b8cf8so729233239f.0 for ; Tue, 18 Jun 2024 14:43:21 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1718747001; x=1719351801; h=to:from:subject:message-id:date:mime-version:x-gm-message-state :from:to:cc:subject:date:message-id:reply-to; bh=qiSTAgHkCtFBRjaZ7eREerJbYy2sDdDqnkwNqWdusAg=; b=vloS9hLIfgdyfNyMyzUB9F8y5IogezhRHdKh/0TkoOMua+JFFZJwK72sIH6b8ubnnC 9Yx9anTegMVIK2kJ6AIxQXqug1CIfX61/Y0VtqX/spUHlXdJFUKRwwf6dS/MpjhtgXKj upqKPy/Z8cbcnM3+cLKj70dRCxpLV5NVnTVKAGOAKG6KIHiF/qZXhxOTrfqQiO4spcRn DFGmJhtAdjh7GjmPFLOCY+kZVSb8TlY4kA6KMEHKP0wXxEC10NpTeQu+F0x3tZyJ+/7d ak9rnqu0zvPCSGijUhaZBDD2hD11zyjOxrXwy1nUof4k9IpE+mja/nAHIsFGBEmTPH1y WaeA== X-Forwarded-Encrypted: i=1; AJvYcCWqULW6fKw12xUVSqZFJEhN79KSoq0FAYJtBeJ/uIfjE52gleFwtle2PpxR5qFOaPfAQZ6RsCgO99a9EY3dkKNjtZ3LyyXBih7R80NQ X-Gm-Message-State: AOJu0YxJQ7UOboMeBPjf0/EA3PR1mK3E1LrPTRVibc5mPuSjG7jCjHDo hRD4b7mEHsMXL3f7BiHKoxUJxEiQaCBSMD7l78cJEfdMm7mtx1ZZZfi8M6okHfgeLTXjBLUi+Dx YWns1D+lcGSeMYkFw57m8enOjNQMM8lVW51cNradd8fi4g6TYCMZ83ic= X-Google-Smtp-Source: AGHT+IHAKYUw6vmG7VLmCJDGOApBU7z9HuLyvf7J8iCR+Knz8pGzJfIbRdEd0UVObw3zt1wo1wNGVVh0Gae9tVG3UfTQ9dvCgVmP Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a05:6e02:1486:b0:375:a3eb:bfb5 with SMTP id e9e14a558f8ab-3761d4daab0mr480485ab.0.1718747001227; Tue, 18 Jun 2024 14:43:21 -0700 (PDT) Date: Tue, 18 Jun 2024 14:43:21 -0700 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <00000000000077990d061b30f83c@google.com> Subject: [syzbot] [btrfs?] BUG: spinlock bad magic in btrfs_stop_all_workers From: syzbot To: clm@fb.com, dsterba@suse.com, josef@toxicpanda.com, linux-btrfs@vger.kernel.org, linux-kernel@vger.kernel.org, syzkaller-bugs@googlegroups.com Content-Type: text/plain; charset="UTF-8" Hello, syzbot found the following issue on: HEAD commit: 2ccbdf43d5e7 Merge tag 'for-linus' of git://git.kernel.org.. git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=10bf1a61980000 kernel config: https://syzkaller.appspot.com/x/.config?x=81c0d76ceef02b39 dashboard link: https://syzkaller.appspot.com/bug?extid=9bf5c83263a4d4387899 compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 userspace arch: i386 Unfortunately, I don't have any reproducer for this issue yet. Downloadable assets: disk image (non-bootable): https://storage.googleapis.com/syzbot-assets/7bc7510fe41f/non_bootable_disk-2ccbdf43.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/13cdb5bfbafa/vmlinux-2ccbdf43.xz kernel image: https://storage.googleapis.com/syzbot-assets/7a14f5d07f81/bzImage-2ccbdf43.xz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+9bf5c83263a4d4387899@syzkaller.appspotmail.com BTRFS info (device loop3): last unmount of filesystem 3a492a15-ac49-4ce6-945e-cef7a687c6c9 BUG: spinlock bad magic on CPU#0, syz-executor.3/7928 ================================================================== BUG: KASAN: slab-out-of-bounds in task_pid_nr include/linux/pid.h:232 [inline] BUG: KASAN: slab-out-of-bounds in spin_dump kernel/locking/spinlock_debug.c:64 [inline] BUG: KASAN: slab-out-of-bounds in spin_bug+0x17d/0x1d0 kernel/locking/spinlock_debug.c:78 Read of size 4 at addr ffff888028b23dd8 by task syz-executor.3/7928 CPU: 0 PID: 7928 Comm: syz-executor.3 Not tainted 6.10.0-rc3-syzkaller-00044-g2ccbdf43d5e7 #0 Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x116/0x1f0 lib/dump_stack.c:114 print_address_description mm/kasan/report.c:377 [inline] print_report+0xc3/0x620 mm/kasan/report.c:488 kasan_report+0xd9/0x110 mm/kasan/report.c:601 task_pid_nr include/linux/pid.h:232 [inline] spin_dump kernel/locking/spinlock_debug.c:64 [inline] spin_bug+0x17d/0x1d0 kernel/locking/spinlock_debug.c:78 debug_spin_lock_before kernel/locking/spinlock_debug.c:86 [inline] do_raw_spin_lock+0x225/0x2c0 kernel/locking/spinlock_debug.c:115 put_pwq_unlocked kernel/workqueue.c:1662 [inline] put_pwq_unlocked kernel/workqueue.c:1655 [inline] destroy_workqueue+0x5df/0xaa0 kernel/workqueue.c:5851 btrfs_stop_all_workers+0x10f/0x370 fs/btrfs/disk-io.c:1794 close_ctree+0x4e3/0xf90 fs/btrfs/disk-io.c:4365 generic_shutdown_super+0x159/0x3d0 fs/super.c:642 kill_anon_super+0x3a/0x60 fs/super.c:1226 btrfs_kill_super+0x3b/0x50 fs/btrfs/super.c:2096 deactivate_locked_super+0xbe/0x1a0 fs/super.c:473 deactivate_super+0xde/0x100 fs/super.c:506 cleanup_mnt+0x222/0x450 fs/namespace.c:1267 task_work_run+0x14e/0x250 kernel/task_work.c:180 resume_user_mode_work include/linux/resume_user_mode.h:50 [inline] exit_to_user_mode_loop kernel/entry/common.c:114 [inline] exit_to_user_mode_prepare include/linux/entry-common.h:328 [inline] __syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline] syscall_exit_to_user_mode+0x278/0x2a0 kernel/entry/common.c:218 __do_fast_syscall_32+0x80/0x120 arch/x86/entry/common.c:389 do_fast_syscall_32+0x32/0x80 arch/x86/entry/common.c:411 entry_SYSENTER_compat_after_hwframe+0x84/0x8e RIP: 0023:0xf727f579 Code: b8 01 10 06 03 74 b4 01 10 07 03 74 b0 01 10 08 03 74 d8 01 00 00 00 00 00 00 00 00 00 00 00 00 00 51 52 55 89 e5 0f 34 cd 80 <5d> 5a 59 c3 90 90 90 90 8d b4 26 00 00 00 00 8d b4 26 00 00 00 00 RSP: 002b:00000000ffb86a58 EFLAGS: 00000292 ORIG_RAX: 0000000000000034 RAX: 0000000000000000 RBX: 00000000ffb86b00 RCX: 0000000000000009 RDX: 00000000f73d5ff4 RSI: 00000000f7326361 RDI: 00000000ffb87ba4 RBP: 00000000ffb86b00 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000296 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 Allocated by task 8951: kasan_save_stack+0x33/0x60 mm/kasan/common.c:47 kasan_save_track+0x14/0x30 mm/kasan/common.c:68 poison_kmalloc_redzone mm/kasan/common.c:370 [inline] __kasan_kmalloc+0xaa/0xb0 mm/kasan/common.c:387 kasan_kmalloc include/linux/kasan.h:211 [inline] __do_kmalloc_node mm/slub.c:4122 [inline] __kmalloc_noprof+0x1ec/0x420 mm/slub.c:4135 kmalloc_noprof include/linux/slab.h:664 [inline] kzalloc_noprof include/linux/slab.h:778 [inline] alloc_workqueue+0xe02/0x1ca0 kernel/workqueue.c:5667 btrfs_alloc_workqueue+0x21c/0x510 fs/btrfs/async-thread.c:112 btrfs_init_workqueues fs/btrfs/disk-io.c:2007 [inline] open_ctree+0x158e/0x52e0 fs/btrfs/disk-io.c:3362 btrfs_fill_super fs/btrfs/super.c:946 [inline] btrfs_get_tree_super fs/btrfs/super.c:1863 [inline] btrfs_get_tree+0x11e9/0x1b90 fs/btrfs/super.c:2089 vfs_get_tree+0x8f/0x380 fs/super.c:1780 fc_mount+0x16/0xc0 fs/namespace.c:1125 btrfs_get_tree_subvol fs/btrfs/super.c:2052 [inline] btrfs_get_tree+0xa53/0x1b90 fs/btrfs/super.c:2090 vfs_get_tree+0x8f/0x380 fs/super.c:1780 do_new_mount fs/namespace.c:3352 [inline] path_mount+0x6e1/0x1f10 fs/namespace.c:3679 do_mount fs/namespace.c:3692 [inline] __do_sys_mount fs/namespace.c:3898 [inline] __se_sys_mount fs/namespace.c:3875 [inline] __ia32_sys_mount+0x295/0x320 fs/namespace.c:3875 do_syscall_32_irqs_on arch/x86/entry/common.c:165 [inline] __do_fast_syscall_32+0x73/0x120 arch/x86/entry/common.c:386 do_fast_syscall_32+0x32/0x80 arch/x86/entry/common.c:411 entry_SYSENTER_compat_after_hwframe+0x84/0x8e The buggy address belongs to the object at ffff888028b23800 which belongs to the cache kmalloc-1k of size 1024 The buggy address is located 960 bytes to the right of allocated 536-byte region [ffff888028b23800, ffff888028b23a18) The buggy address belongs to the physical page: page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x28b20 head: order:3 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0 flags: 0xfff00000000040(head|node=0|zone=1|lastcpupid=0x7ff) page_type: 0xffffefff(slab) raw: 00fff00000000040 ffff888015442dc0 ffffea0000adf200 dead000000000002 raw: 0000000000000000 0000000000100010 00000001ffffefff 0000000000000000 head: 00fff00000000040 ffff888015442dc0 ffffea0000adf200 dead000000000002 head: 0000000000000000 0000000000100010 00000001ffffefff 0000000000000000 head: 00fff00000000003 ffffea0000a2c801 ffffffffffffffff 0000000000000000 head: 0000000000000008 0000000000000000 00000000ffffffff 0000000000000000 page dumped because: kasan: bad access detected page_owner tracks the page as allocated page last allocated via order 3, migratetype Unmovable, gfp_mask 0x152820(GFP_ATOMIC|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_HARDWALL), pid 1096, tgid 1096 (kworker/u32:9), ts 154103322344, free_ts 47027523951 set_page_owner include/linux/page_owner.h:32 [inline] post_alloc_hook+0x2d1/0x350 mm/page_alloc.c:1468 prep_new_page mm/page_alloc.c:1476 [inline] get_page_from_freelist+0x136a/0x2e50 mm/page_alloc.c:3420 __alloc_pages_noprof+0x22b/0x2460 mm/page_alloc.c:4678 __alloc_pages_node_noprof include/linux/gfp.h:269 [inline] alloc_pages_node_noprof include/linux/gfp.h:296 [inline] alloc_slab_page+0x56/0x110 mm/slub.c:2265 allocate_slab mm/slub.c:2428 [inline] new_slab+0x84/0x260 mm/slub.c:2481 ___slab_alloc+0xdac/0x1870 mm/slub.c:3667 __slab_alloc.constprop.0+0x56/0xb0 mm/slub.c:3757 __slab_alloc_node mm/slub.c:3810 [inline] slab_alloc_node mm/slub.c:3989 [inline] __do_kmalloc_node mm/slub.c:4121 [inline] __kmalloc_noprof+0x37f/0x420 mm/slub.c:4135 kmalloc_noprof include/linux/slab.h:664 [inline] kzalloc_noprof include/linux/slab.h:778 [inline] ieee802_11_parse_elems_full+0xef/0x15b0 net/mac80211/parse.c:880 ieee802_11_parse_elems_crc net/mac80211/ieee80211_i.h:2332 [inline] ieee802_11_parse_elems net/mac80211/ieee80211_i.h:2339 [inline] ieee80211_rx_mgmt_probe_beacon net/mac80211/ibss.c:1574 [inline] ieee80211_ibss_rx_queued_mgmt+0xc54/0x3030 net/mac80211/ibss.c:1605 ieee80211_iface_process_skb net/mac80211/iface.c:1605 [inline] ieee80211_iface_work+0xc07/0xf00 net/mac80211/iface.c:1659 cfg80211_wiphy_work+0x255/0x330 net/wireless/core.c:437 process_one_work+0x958/0x1ad0 kernel/workqueue.c:3231 process_scheduled_works kernel/workqueue.c:3312 [inline] worker_thread+0x6c8/0xf70 kernel/workqueue.c:3393 kthread+0x2c1/0x3a0 kernel/kthread.c:389 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147 page last free pid 5221 tgid 5221 stack trace: reset_page_owner include/linux/page_owner.h:25 [inline] free_pages_prepare mm/page_alloc.c:1088 [inline] free_unref_page+0x64a/0xe40 mm/page_alloc.c:2583 qlink_free mm/kasan/quarantine.c:163 [inline] qlist_free_all+0x4e/0x140 mm/kasan/quarantine.c:179 kasan_quarantine_reduce+0x192/0x1e0 mm/kasan/quarantine.c:286 __kasan_slab_alloc+0x69/0x90 mm/kasan/common.c:322 kasan_slab_alloc include/linux/kasan.h:201 [inline] slab_post_alloc_hook mm/slub.c:3941 [inline] slab_alloc_node mm/slub.c:4001 [inline] kmalloc_trace_noprof+0x11e/0x310 mm/slub.c:4148 kmalloc_noprof include/linux/slab.h:660 [inline] kzalloc_noprof include/linux/slab.h:778 [inline] kobject_uevent_env+0x265/0x15f0 lib/kobject_uevent.c:525 __kobject_del+0x168/0x1f0 lib/kobject.c:601 kobject_cleanup lib/kobject.c:680 [inline] kobject_release lib/kobject.c:720 [inline] kref_put include/linux/kref.h:65 [inline] kobject_put+0x31c/0x5b0 lib/kobject.c:737 netdev_queue_update_kobjects+0x4a2/0x640 net/core/net-sysfs.c:1854 netif_set_real_num_tx_queues+0x168/0x880 net/core/dev.c:2940 veth_init_queues+0xe1/0x190 drivers/net/veth.c:1755 veth_newlink+0x627/0xa10 drivers/net/veth.c:1878 rtnl_newlink_create net/core/rtnetlink.c:3510 [inline] __rtnl_newlink+0x119c/0x1960 net/core/rtnetlink.c:3730 rtnl_newlink+0x67/0xa0 net/core/rtnetlink.c:3743 rtnetlink_rcv_msg+0x3c7/0xea0 net/core/rtnetlink.c:6635 netlink_rcv_skb+0x165/0x410 net/netlink/af_netlink.c:2564 Memory state around the buggy address: ffff888028b23c80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ffff888028b23d00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc >ffff888028b23d80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ^ ffff888028b23e00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ffff888028b23e80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ================================================================== ---------------- Code disassembly (best guess), 2 bytes skipped: 0: 10 06 adc %al,(%rsi) 2: 03 74 b4 01 add 0x1(%rsp,%rsi,4),%esi 6: 10 07 adc %al,(%rdi) 8: 03 74 b0 01 add 0x1(%rax,%rsi,4),%esi c: 10 08 adc %cl,(%rax) e: 03 74 d8 01 add 0x1(%rax,%rbx,8),%esi 1e: 00 51 52 add %dl,0x52(%rcx) 21: 55 push %rbp 22: 89 e5 mov %esp,%ebp 24: 0f 34 sysenter 26: cd 80 int $0x80 * 28: 5d pop %rbp <-- trapping instruction 29: 5a pop %rdx 2a: 59 pop %rcx 2b: c3 ret 2c: 90 nop 2d: 90 nop 2e: 90 nop 2f: 90 nop 30: 8d b4 26 00 00 00 00 lea 0x0(%rsi,%riz,1),%esi 37: 8d b4 26 00 00 00 00 lea 0x0(%rsi,%riz,1),%esi --- This report is generated by a bot. It may contain errors. See https://goo.gl/tpsmEJ for more information about syzbot. syzbot engineers can be reached at syzkaller@googlegroups.com. syzbot will keep track of this issue. See: https://goo.gl/tpsmEJ#status for how to communicate with syzbot. If the report is already addressed, let syzbot know by replying with: #syz fix: exact-commit-title If you want to overwrite report's subsystems, reply with: #syz set subsystems: new-subsystem (See the list of subsystem names on the web dashboard) If the report is a duplicate of another one, reply with: #syz dup: exact-subject-of-another-report If you want to undo deduplication, reply with: #syz undup