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net boot error: BUG: using smp_processor_id() in preemptible code in ext4_mb_new_blocks

Status: closed as dup on 2020/06/13 04:27
Subsystems: ext4
[Documentation on labels]
Reported-by: syzbot+e10468d1d0662fdb7c8c@syzkaller.appspotmail.com
First crash: 1658d, last: 1654d
▶ ▼ Duplicate of
Title Repro Cause bisect Fix bisect Count Last Reported
linux-next test error: BUG: using smp_processor_id() in preemptible [ADDR] code: syz-fuzzer/6792 ext4 1 1668d 1668d
▶ ▼ Discussions (1)
Title Replies (including bot) Last reply
net boot error: BUG: using smp_processor_id() in preemptible code in ext4_mb_new_blocks 0 (1) 2020/06/13 02:54

Sample crash report:
BUG: using smp_processor_id() in preemptible [00000000] code: systemd-tmpfile/3915
caller is ext4_mb_new_blocks+0xa4d/0x3b70 fs/ext4/mballoc.c:4711
CPU: 1 PID: 3915 Comm: systemd-tmpfile Not tainted 5.8.0-rc1-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:3641
 do_mkdirat+0x21e/0x280 fs/namei.c:3664
 do_syscall_64+0x60/0xe0 arch/x86/entry/common.c:359
 entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x7fda73366687
Code: Bad RIP value.
RSP: 002b:00007ffd6c48e148 EFLAGS: 00000246 ORIG_RAX: 0000000000000053
RAX: ffffffffffffffda RBX: 000055a6486ebda0 RCX: 00007fda73366687
RDX: 0000000000000000 RSI: 00000000000001ed RDI: 000055a6486ebda0
RBP: 00000000000001ed R08: 000000000000feff R09: 000000000000003f
R10: 000055a6486ebd80 R11: 0000000000000246 R12: 0000000000000012
R13: 000055a6486ec640 R14: 0000000000000000 R15: 0000000000000000
BUG: using smp_processor_id() in preemptible [00000000] code: systemd-tmpfile/3915
caller is ext4_mb_new_blocks+0xa4d/0x3b70 fs/ext4/mballoc.c:4711
CPU: 1 PID: 3915 Comm: systemd-tmpfile Not tainted 5.8.0-rc1-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:3641
 do_mkdirat+0x21e/0x280 fs/namei.c:3664
 do_syscall_64+0x60/0xe0 arch/x86/entry/common.c:359
 entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x7fda73366687
Code: Bad RIP value.
RSP: 002b:00007ffd6c48e148 EFLAGS: 00000246 ORIG_RAX: 0000000000000053
RAX: ffffffffffffffda RBX: 000055a6486ed870 RCX: 00007fda73366687
RDX: 0000000000000000 RSI: 00000000000003ff RDI: 000055a6486ed870
RBP: 00000000000003ff R08: 000000000000fec0 R09: 000000000000003f
R10: 000055a6486ed840 R11: 0000000000000246 R12: 0000000000000012
R13: 000055a6486ed890 R14: 0000000000000000 R15: 0000000000000000
BUG: using smp_processor_id() in preemptible [00000000] code: systemd-tmpfile/3915
caller is ext4_mb_new_blocks+0xa4d/0x3b70 fs/ext4/mballoc.c:4711
CPU: 0 PID: 3915 Comm: systemd-tmpfile Not tainted 5.8.0-rc1-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:3641
 do_mkdirat+0x21e/0x280 fs/namei.c:3664
 do_syscall_64+0x60/0xe0 arch/x86/entry/common.c:359
 entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x7fda73366687
Code: Bad RIP value.
RSP: 002b:00007ffd6c48e148 EFLAGS: 00000246 ORIG_RAX: 0000000000000053
RAX: ffffffffffffffda RBX: 000055a6486eb050 RCX: 00007fda73366687
RDX: 0000000000000000 RSI: 00000000000003ff RDI: 000055a6486eb050
RBP: 00000000000003ff R08: 000000000000fec0 R09: 000000000000003f
R10: 000055a6486eb040 R11: 0000000000000246 R12: 0000000000000012
R13: 000055a6486eb070 R14: 0000000000000000 R15: 0000000000000000
BUG: using smp_processor_id() in preemptible [00000000] code: systemd-tmpfile/3915
caller is ext4_mb_new_blocks+0xa4d/0x3b70 fs/ext4/mballoc.c:4711
CPU: 0 PID: 3915 Comm: systemd-tmpfile Not tainted 5.8.0-rc1-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:3641
 do_mkdirat+0x21e/0x280 fs/namei.c:3664
 do_syscall_64+0x60/0xe0 arch/x86/entry/common.c:359
 entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x7fda73366687
Code: Bad RIP value.
RSP: 002b:00007ffd6c48e148 EFLAGS: 00000246 ORIG_RAX: 0000000000000053
RAX: ffffffffffffffda RBX: 000055a6486eb160 RCX: 00007fda73366687
RDX: 0000000000000000 RSI: 00000000000003ff RDI: 000055a6486eb160
RBP: 00000000000003ff R08: 000000000000fec0 R09: 000000000000003f
R10: 000055a6486eb140 R11: 0000000000000246 R12: 0000000000000012
R13: 000055a6486eb180 R14: 0000000000000000 R15: 0000000000000000
BUG: using smp_processor_id() in preemptible [00000000] code: systemd-tmpfile/3915
caller is ext4_mb_new_blocks+0xa4d/0x3b70 fs/ext4/mballoc.c:4711
CPU: 0 PID: 3915 Comm: systemd-tmpfile Not tainted 5.8.0-rc1-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:3641
 do_mkdirat+0x21e/0x280 fs/namei.c:3664
 do_syscall_64+0x60/0xe0 arch/x86/entry/common.c:359
 entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x7fda73366687
Code: Bad RIP value.
RSP: 002b:00007ffd6c48e148 EFLAGS: 00000246 ORIG_RAX: 0000000000000053
RAX: ffffffffffffffda RBX: 000055a6486ee890 RCX: 00007fda73366687
RDX: 0000000000000000 RSI: 00000000000003ff RDI: 000055a6486ee890
RBP: 00000000000003ff R08: 000000000000fec0 R09: 000000000000003f
R10: 000055a6486ee880 R11: 0000000000000246 R12: 0000000000000012
R13: 000055a6486ee8b0 R14: 0000000000000000 R15: 0000000000000000
BUG: using smp_processor_id() in preemptible [00000000] code: systemd-tmpfile/3915
caller is ext4_mb_new_blocks+0xa4d/0x3b70 fs/ext4/mballoc.c:4711
CPU: 0 PID: 3915 Comm: systemd-tmpfile Not tainted 5.8.0-rc1-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:3641
 do_mkdirat+0x21e/0x280 fs/namei.c:3664
 do_syscall_64+0x60/0xe0 arch/x86/entry/common.c:359
 entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x7fda73366687
Code: Bad RIP value.
RSP: 002b:00007ffd6c48e148 EFLAGS: 00000246 ORIG_RAX: 0000000000000053
RAX: ffffffffffffffda RBX: 000055a6486ee9a0 RCX: 00007fda73366687
RDX: 0000000000000000 RSI: 00000000000003ff RDI: 000055a6486ee9a0
RBP: 00000000000003ff R08: 000000000000fec0 R09: 000000000000003f
R10: 000055a6486ee980 R11: 0000000000000246 R12: 0000000000000012
R13: 000055a6486ee9c0 R14: 0000000000000000 R15: 0000000000000000

Crashes (2):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2020/06/16 05:49 net-old b8ad540dd4e4 baca2611 .config console log report ci-upstream-net-this-kasan-gce
2020/06/13 01:42 net-old 6954a9e4192b f4724dd3 .config console log report ci-upstream-net-this-kasan-gce
* Struck through repros no longer work on HEAD.