From: syzbot <syzbot+82f324bb69744c5f6969@syzkaller.appspotmail.com>
To: adilger.kernel@dilger.ca, linux-ext4@vger.kernel.org,
linux-kernel@vger.kernel.org, linux-next@vger.kernel.org,
sfr@canb.auug.org.au, syzkaller-bugs@googlegroups.com,
tytso@mit.edu
Subject: linux-next test error: BUG: using smp_processor_id() in preemptible [ADDR] code: syz-fuzzer/6792
Date: Tue, 02 Jun 2020 04:20:16 -0700 [thread overview]
Message-ID: <0000000000008ff8ea05a71818b5@google.com> (raw)
Hello,
syzbot found the following crash on:
HEAD commit: 0e21d462 Add linux-next specific files for 20200602
git tree: linux-next
console output: https://syzkaller.appspot.com/x/log.txt?x=127233ee100000
kernel config: https://syzkaller.appspot.com/x/.config?x=ecc1aef35f550ee3
dashboard link: https://syzkaller.appspot.com/bug?extid=82f324bb69744c5f6969
compiler: gcc (GCC) 9.0.0 20181231 (experimental)
IMPORTANT: if you fix the bug, please add the following tag to the commit:
Reported-by: syzbot+82f324bb69744c5f6969@syzkaller.appspotmail.com
BUG: using smp_processor_id() in preemptible [00000000] code: syz-fuzzer/6792
caller is ext4_mb_new_blocks+0xa4d/0x3b70 fs/ext4/mballoc.c:4711
CPU: 1 PID: 6792 Comm: syz-fuzzer Not tainted 5.7.0-next-20200602-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
__dump_stack lib/dump_stack.c:77 [inline]
dump_stack+0x18f/0x20d lib/dump_stack.c:118
check_preemption_disabled+0x20d/0x220 lib/smp_processor_id.c:48
ext4_mb_new_blocks+0xa4d/0x3b70 fs/ext4/mballoc.c:4711
ext4_ext_map_blocks+0x201b/0x33e0 fs/ext4/extents.c:4244
ext4_map_blocks+0x4cb/0x1640 fs/ext4/inode.c:626
ext4_getblk+0xad/0x520 fs/ext4/inode.c:833
ext4_bread+0x7c/0x380 fs/ext4/inode.c:883
ext4_append+0x153/0x360 fs/ext4/namei.c:67
ext4_init_new_dir fs/ext4/namei.c:2757 [inline]
ext4_mkdir+0x5e0/0xdf0 fs/ext4/namei.c:2802
vfs_mkdir+0x419/0x690 fs/namei.c:3632
do_mkdirat+0x21e/0x280 fs/namei.c:3655
do_syscall_64+0x60/0xe0 arch/x86/entry/common.c:359
entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x4b02a0
Code: Bad RIP value.
RSP: 002b:000000c00010d4b8 EFLAGS: 00000212 ORIG_RAX: 0000000000000102
RAX: ffffffffffffffda RBX: 000000c00002c000 RCX: 00000000004b02a0
RDX: 00000000000001c0 RSI: 000000c000026b40 RDI: ffffffffffffff9c
RBP: 000000c00010d510 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000212 R12: ffffffffffffffff
R13: 000000000000005b R14: 000000000000005a R15: 0000000000000100
---
This bug 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.
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next reply other threads:[~2020-06-02 11:20 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-06-02 11:20 syzbot [this message]
2020-06-02 12:41 ` linux-next test error: BUG: using smp_processor_id() in preemptible [ADDR] code: syz-fuzzer/6792 Ritesh Harjani
2020-06-02 12:41 ` syzbot
2020-06-12 12:43 ` Ido Schimmel
2020-06-12 13:39 ` Ritesh Harjani
2020-06-12 13:51 ` Ido Schimmel
[not found] <20200602145256.9236-1-hdanton@sina.com>
2020-06-03 10:06 ` Ritesh Harjani
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