[syzbot] [block?] possible deadlock in mempool_free
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syzbot
Mar 5, 2024, 6:02:31 AMMar 5
to ax...@kernel.dk, linux...@vger.kernel.org, linux-...@vger.kernel.org, syzkall...@googlegroups.com
Hello,
syzbot found the following issue on:
HEAD commit: 17ba56605bfd Merge tag 'iommu-fix-v6.8-rc6' of git://git.k..
git tree: upstream
console output: https://syzkaller.appspot.com/x/log.txt?x=14240bba180000
kernel config: https://syzkaller.appspot.com/x/.config?x=be0288b26c967205
dashboard link: https://syzkaller.appspot.com/bug?extid=03a410b5470dc0d57748
compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40
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-17ba5660.raw.xz
vmlinux: https://storage.googleapis.com/syzbot-assets/1846d2ec3e0f/vmlinux-17ba5660.xz
kernel image: https://storage.googleapis.com/syzbot-assets/c24b84f13f11/bzImage-17ba5660.xz
IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+03a410...@syzkaller.appspotmail.com
=====================================================
WARNING: SOFTIRQ-safe -> SOFTIRQ-unsafe lock order detected
6.8.0-rc6-syzkaller-00194-g17ba56605bfd #0 Not tainted
-----------------------------------------------------
syz-executor.0/13441 [HC0[0]:SC0[0]:HE0:SE1] is trying to acquire:
ffffffff8d93fc00 (mmu_notifier_invalidate_range_start){+.+.}-{0:0}, at: fs_reclaim_acquire mm/page_alloc.c:3709 [inline]
ffffffff8d93fc00 (mmu_notifier_invalidate_range_start){+.+.}-{0:0}, at: fs_reclaim_acquire+0xb0/0x150 mm/page_alloc.c:3700
and this task is already holding:
ffff88801a379718 (&pool->lock#3){..-.}-{2:2}, at: mempool_alloc+0x1ff/0x390 mm/mempool.c:412
which would create a new lock dependency:
(&pool->lock#3){..-.}-{2:2} -> (mmu_notifier_invalidate_range_start){+.+.}-{0:0}
but this new dependency connects a SOFTIRQ-irq-safe lock:
(&pool->lock#3){..-.}-{2:2}
... which became SOFTIRQ-irq-safe at:
lock_acquire kernel/locking/lockdep.c:5754 [inline]
lock_acquire+0x1ae/0x520 kernel/locking/lockdep.c:5719
__raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline]
_raw_spin_lock_irqsave+0x3a/0x60 kernel/locking/spinlock.c:162
mempool_free+0x10a/0x3b0 mm/mempool.c:545
bvec_free+0xfb/0x120 block/bio.c:168
bio_free+0xaa/0x130 block/bio.c:237
bio_put_percpu_cache block/bio.c:767 [inline]
bio_put+0x2fb/0x650 block/bio.c:806
iomap_dio_bio_end_io+0x28a/0x6c0 fs/iomap/direct-io.c:230
bio_endio+0x59c/0x6b0 block/bio.c:1608
req_bio_endio block/blk-mq.c:792 [inline]
blk_update_request+0x635/0x1710 block/blk-mq.c:937
scsi_end_request+0x7b/0x9c0 drivers/scsi/scsi_lib.c:539
scsi_io_completion+0x17c/0x14c0 drivers/scsi/scsi_lib.c:977
scsi_complete+0x124/0x250 drivers/scsi/scsi_lib.c:1439
blk_complete_reqs+0xae/0xf0 block/blk-mq.c:1135
__do_softirq+0x21c/0x8e7 kernel/softirq.c:553
run_ksoftirqd kernel/softirq.c:921 [inline]
run_ksoftirqd+0x35/0x60 kernel/softirq.c:913
smpboot_thread_fn+0x669/0xa20 kernel/smpboot.c:164
kthread+0x2c6/0x3b0 kernel/kthread.c:388
ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1b/0x30 arch/x86/entry/entry_64.S:243
to a SOFTIRQ-irq-unsafe lock:
(mmu_notifier_invalidate_range_start){+.+.}-{0:0}
... which became SOFTIRQ-irq-unsafe at:
...
lock_acquire kernel/locking/lockdep.c:5754 [inline]
lock_acquire+0x1ae/0x520 kernel/locking/lockdep.c:5719
fs_reclaim_acquire mm/page_alloc.c:3709 [inline]
fs_reclaim_acquire+0xcc/0x150 mm/page_alloc.c:3700
might_alloc include/linux/sched/mm.h:303 [inline]
slab_pre_alloc_hook mm/slub.c:3761 [inline]
slab_alloc_node mm/slub.c:3842 [inline]
kmalloc_trace+0x51/0x340 mm/slub.c:4007
kmalloc include/linux/slab.h:590 [inline]
kzalloc include/linux/slab.h:711 [inline]
__kthread_create_worker+0x4d/0x200 kernel/kthread.c:864
kthread_create_worker+0xcd/0x110 kernel/kthread.c:907
wq_cpu_intensive_thresh_init kernel/workqueue.c:6704 [inline]
workqueue_init+0x25/0x830 kernel/workqueue.c:6753
kernel_init_freeable+0x335/0xc10 init/main.c:1536
kernel_init+0x1c/0x2a0 init/main.c:1441
ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1b/0x30 arch/x86/entry/entry_64.S:243
other info that might help us debug this:
Possible interrupt unsafe locking scenario:
CPU0 CPU1
---- ----
lock(mmu_notifier_invalidate_range_start);
local_irq_disable();
lock(&pool->lock#3);
lock(mmu_notifier_invalidate_range_start);
<Interrupt>
lock(&pool->lock#3);
*** DEADLOCK ***
4 locks held by syz-executor.0/13441:
#0: ffff8880241da420 (sb_writers#5){.+.+}-{0:0}, at: do_pwritev+0x1b3/0x260 fs/read_write.c:1072
#1: ffff888031e54000 (&sb->s_type->i_mutex_key#7){++++}-{3:3}, at: inode_lock include/linux/fs.h:804 [inline]
#1: ffff888031e54000 (&sb->s_type->i_mutex_key#7){++++}-{3:3}, at: ext4_dio_write_iter fs/ext4/file.c:530 [inline]
#1: ffff888031e54000 (&sb->s_type->i_mutex_key#7){++++}-{3:3}, at: ext4_file_write_iter+0xc8b/0x1960 fs/ext4/file.c:696
#2: ffffffff8d7ad220 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:298 [inline]
#2: ffffffff8d7ad220 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:750 [inline]
#2: ffffffff8d7ad220 (rcu_read_lock){....}-{1:2}, at: blk_mq_run_hw_queue+0x619/0x9a0 block/blk-mq.c:2285
#3: ffff88801a379718 (&pool->lock#3){..-.}-{2:2}, at: mempool_alloc+0x1ff/0x390 mm/mempool.c:412
the dependencies between SOFTIRQ-irq-safe lock and the holding lock:
-> (&pool->lock#3){..-.}-{2:2} {
IN-SOFTIRQ-W at:
lock_acquire kernel/locking/lockdep.c:5754 [inline]
lock_acquire+0x1ae/0x520 kernel/locking/lockdep.c:5719
__raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline]
_raw_spin_lock_irqsave+0x3a/0x60 kernel/locking/spinlock.c:162
mempool_free+0x10a/0x3b0 mm/mempool.c:545
bvec_free+0xfb/0x120 block/bio.c:168
bio_free+0xaa/0x130 block/bio.c:237
bio_put_percpu_cache block/bio.c:767 [inline]
bio_put+0x2fb/0x650 block/bio.c:806
iomap_dio_bio_end_io+0x28a/0x6c0 fs/iomap/direct-io.c:230
bio_endio+0x59c/0x6b0 block/bio.c:1608
req_bio_endio block/blk-mq.c:792 [inline]
blk_update_request+0x635/0x1710 block/blk-mq.c:937
scsi_end_request+0x7b/0x9c0 drivers/scsi/scsi_lib.c:539
scsi_io_completion+0x17c/0x14c0 drivers/scsi/scsi_lib.c:977
scsi_complete+0x124/0x250 drivers/scsi/scsi_lib.c:1439
blk_complete_reqs+0xae/0xf0 block/blk-mq.c:1135
__do_softirq+0x21c/0x8e7 kernel/softirq.c:553
run_ksoftirqd kernel/softirq.c:921 [inline]
run_ksoftirqd+0x35/0x60 kernel/softirq.c:913
smpboot_thread_fn+0x669/0xa20 kernel/smpboot.c:164
kthread+0x2c6/0x3b0 kernel/kthread.c:388
ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1b/0x30 arch/x86/entry/entry_64.S:243
INITIAL USE at:
lock_acquire kernel/locking/lockdep.c:5754 [inline]
lock_acquire+0x1ae/0x520 kernel/locking/lockdep.c:5719
__raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline]
_raw_spin_lock_irqsave+0x3a/0x60 kernel/locking/spinlock.c:162
mempool_alloc+0x1ff/0x390 mm/mempool.c:412
bvec_alloc+0x192/0x210 block/bio.c:211
bio_alloc_bioset+0x4b9/0x8b0 block/bio.c:558
bio_alloc include/linux/bio.h:437 [inline]
iomap_dio_alloc_bio fs/iomap/direct-io.c:61 [inline]
iomap_dio_alloc_bio.isra.0+0x86/0xc0 fs/iomap/direct-io.c:55
iomap_dio_bio_iter+0xaa7/0x16c0 fs/iomap/direct-io.c:379
iomap_dio_iter fs/iomap/direct-io.c:500 [inline]
__iomap_dio_rw+0xd7b/0x1bd0 fs/iomap/direct-io.c:659
iomap_dio_rw+0x40/0xa0 fs/iomap/direct-io.c:748
ext4_dio_write_iter fs/ext4/file.c:577 [inline]
ext4_file_write_iter+0x12c6/0x1960 fs/ext4/file.c:696
call_write_iter include/linux/fs.h:2087 [inline]
do_iter_readv_writev+0x41d/0x670 fs/read_write.c:741
vfs_writev+0x36f/0xdb0 fs/read_write.c:971
do_pwritev+0x1b3/0x260 fs/read_write.c:1072
__do_sys_pwritev2 fs/read_write.c:1131 [inline]
__se_sys_pwritev2 fs/read_write.c:1122 [inline]
__x64_sys_pwritev2+0xef/0x160 fs/read_write.c:1122
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xd5/0x270 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x6f/0x77
}
... key at: [<ffffffff9463bc00>] __key.1+0x0/0x40
the dependencies between the lock to be acquired
and SOFTIRQ-irq-unsafe lock:
-> (mmu_notifier_invalidate_range_start){+.+.}-{0:0} {
HARDIRQ-ON-W at:
lock_acquire kernel/locking/lockdep.c:5754 [inline]
lock_acquire+0x1ae/0x520 kernel/locking/lockdep.c:5719
fs_reclaim_acquire mm/page_alloc.c:3709 [inline]
fs_reclaim_acquire+0xcc/0x150 mm/page_alloc.c:3700
might_alloc include/linux/sched/mm.h:303 [inline]
slab_pre_alloc_hook mm/slub.c:3761 [inline]
slab_alloc_node mm/slub.c:3842 [inline]
kmalloc_trace+0x51/0x340 mm/slub.c:4007
kmalloc include/linux/slab.h:590 [inline]
kzalloc include/linux/slab.h:711 [inline]
__kthread_create_worker+0x4d/0x200 kernel/kthread.c:864
kthread_create_worker+0xcd/0x110 kernel/kthread.c:907
wq_cpu_intensive_thresh_init kernel/workqueue.c:6704 [inline]
workqueue_init+0x25/0x830 kernel/workqueue.c:6753
kernel_init_freeable+0x335/0xc10 init/main.c:1536
kernel_init+0x1c/0x2a0 init/main.c:1441
ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1b/0x30 arch/x86/entry/entry_64.S:243
SOFTIRQ-ON-W at:
lock_acquire kernel/locking/lockdep.c:5754 [inline]
lock_acquire+0x1ae/0x520 kernel/locking/lockdep.c:5719
fs_reclaim_acquire mm/page_alloc.c:3709 [inline]
fs_reclaim_acquire+0xcc/0x150 mm/page_alloc.c:3700
might_alloc include/linux/sched/mm.h:303 [inline]
slab_pre_alloc_hook mm/slub.c:3761 [inline]
slab_alloc_node mm/slub.c:3842 [inline]
kmalloc_trace+0x51/0x340 mm/slub.c:4007
kmalloc include/linux/slab.h:590 [inline]
kzalloc include/linux/slab.h:711 [inline]
__kthread_create_worker+0x4d/0x200 kernel/kthread.c:864
kthread_create_worker+0xcd/0x110 kernel/kthread.c:907
wq_cpu_intensive_thresh_init kernel/workqueue.c:6704 [inline]
workqueue_init+0x25/0x830 kernel/workqueue.c:6753
kernel_init_freeable+0x335/0xc10 init/main.c:1536
kernel_init+0x1c/0x2a0 init/main.c:1441
ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1b/0x30 arch/x86/entry/entry_64.S:243
INITIAL USE at:
lock_acquire kernel/locking/lockdep.c:5754 [inline]
lock_acquire+0x1ae/0x520 kernel/locking/lockdep.c:5719
fs_reclaim_acquire mm/page_alloc.c:3709 [inline]
fs_reclaim_acquire+0xcc/0x150 mm/page_alloc.c:3700
might_alloc include/linux/sched/mm.h:303 [inline]
slab_pre_alloc_hook mm/slub.c:3761 [inline]
slab_alloc_node mm/slub.c:3842 [inline]
kmalloc_trace+0x51/0x340 mm/slub.c:4007
kmalloc include/linux/slab.h:590 [inline]
kzalloc include/linux/slab.h:711 [inline]
__kthread_create_worker+0x4d/0x200 kernel/kthread.c:864
kthread_create_worker+0xcd/0x110 kernel/kthread.c:907
wq_cpu_intensive_thresh_init kernel/workqueue.c:6704 [inline]
workqueue_init+0x25/0x830 kernel/workqueue.c:6753
kernel_init_freeable+0x335/0xc10 init/main.c:1536
kernel_init+0x1c/0x2a0 init/main.c:1441
ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1b/0x30 arch/x86/entry/entry_64.S:243
}
... key at: [<ffffffff8d93fc00>] __mmu_notifier_invalidate_range_start_map+0x0/0x60
... acquired at:
lock_acquire kernel/locking/lockdep.c:5754 [inline]
lock_acquire+0x1ae/0x520 kernel/locking/lockdep.c:5719
fs_reclaim_acquire mm/page_alloc.c:3709 [inline]
fs_reclaim_acquire+0xcc/0x150 mm/page_alloc.c:3700
might_alloc include/linux/sched/mm.h:303 [inline]
prepare_alloc_pages.constprop.0+0x155/0x560 mm/page_alloc.c:4338
__alloc_pages+0x193/0x2440 mm/page_alloc.c:4556
alloc_pages_mpol+0x258/0x600 mm/mempolicy.c:2133
stack_depot_save_flags+0x568/0x900 lib/stackdepot.c:676
kasan_save_stack+0x42/0x60 mm/kasan/common.c:48
kasan_save_track+0x14/0x30 mm/kasan/common.c:68
unpoison_slab_object mm/kasan/common.c:312 [inline]
__kasan_mempool_unpoison_object+0x12c/0x1b0 mm/kasan/common.c:535
kasan_mempool_unpoison_object include/linux/kasan.h:339 [inline]
kasan_unpoison_element mm/mempool.c:130 [inline]
remove_element+0x160/0x1e0 mm/mempool.c:150
mempool_alloc+0x257/0x390 mm/mempool.c:414
__sg_alloc_table+0x25d/0x390 lib/scatterlist.c:321
sg_alloc_table_chained+0x97/0x1d0 lib/sg_pool.c:133
scsi_alloc_sgtables+0x1cd/0xfc0 drivers/scsi/scsi_lib.c:1042
sd_setup_read_write_cmnd drivers/scsi/sd.c:1200 [inline]
sd_init_command+0xafa/0x34b0 drivers/scsi/sd.c:1325
scsi_prepare_cmd drivers/scsi/scsi_lib.c:1607 [inline]
scsi_queue_rq+0x1ff8/0x35f0 drivers/scsi/scsi_lib.c:1741
blk_mq_dispatch_rq_list+0x452/0x2030 block/blk-mq.c:2070
__blk_mq_do_dispatch_sched block/blk-mq-sched.c:170 [inline]
blk_mq_do_dispatch_sched block/blk-mq-sched.c:184 [inline]
__blk_mq_sched_dispatch_requests+0xce0/0x1620 block/blk-mq-sched.c:309
blk_mq_sched_dispatch_requests+0xd4/0x150 block/blk-mq-sched.c:331
blk_mq_run_hw_queue+0x645/0x9a0 block/blk-mq.c:2285
blk_mq_dispatch_plug_list block/blk-mq.c:2785 [inline]
blk_mq_flush_plug_list.part.0+0x5f3/0x1d20 block/blk-mq.c:2833
blk_mq_flush_plug_list block/blk-mq.c:1296 [inline]
blk_add_rq_to_plug+0x117/0x540 block/blk-mq.c:1299
blk_mq_submit_bio+0x1625/0x2270 block/blk-mq.c:3027
__submit_bio+0xfd/0x310 block/blk-core.c:608
__submit_bio_noacct_mq block/blk-core.c:687 [inline]
submit_bio_noacct_nocheck+0x84b/0xba0 block/blk-core.c:716
submit_bio_noacct+0x747/0x1b50 block/blk-core.c:826
iomap_dio_submit_bio+0x1d3/0x240 fs/iomap/direct-io.c:80
iomap_dio_bio_iter+0xa4a/0x16c0 fs/iomap/direct-io.c:417
iomap_dio_iter fs/iomap/direct-io.c:500 [inline]
__iomap_dio_rw+0xd7b/0x1bd0 fs/iomap/direct-io.c:659
iomap_dio_rw+0x40/0xa0 fs/iomap/direct-io.c:748
ext4_dio_write_iter fs/ext4/file.c:577 [inline]
ext4_file_write_iter+0x12c6/0x1960 fs/ext4/file.c:696
call_write_iter include/linux/fs.h:2087 [inline]
do_iter_readv_writev+0x41d/0x670 fs/read_write.c:741
vfs_writev+0x36f/0xdb0 fs/read_write.c:971
do_pwritev+0x1b3/0x260 fs/read_write.c:1072
__do_sys_pwritev2 fs/read_write.c:1131 [inline]
__se_sys_pwritev2 fs/read_write.c:1122 [inline]
__x64_sys_pwritev2+0xef/0x160 fs/read_write.c:1122
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xd5/0x270 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x6f/0x77
stack backtrace:
CPU: 3 PID: 13441 Comm: syz-executor.0 Not tainted 6.8.0-rc6-syzkaller-00194-g17ba56605bfd #0
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
Call Trace:
<TASK>
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0xd9/0x1b0 lib/dump_stack.c:106
print_bad_irq_dependency kernel/locking/lockdep.c:2626 [inline]
check_irq_usage+0xe3c/0x1490 kernel/locking/lockdep.c:2865
check_prev_add kernel/locking/lockdep.c:3138 [inline]
check_prevs_add kernel/locking/lockdep.c:3253 [inline]
validate_chain kernel/locking/lockdep.c:3869 [inline]
__lock_acquire+0x2465/0x3b40 kernel/locking/lockdep.c:5137
lock_acquire kernel/locking/lockdep.c:5754 [inline]
lock_acquire+0x1ae/0x520 kernel/locking/lockdep.c:5719
fs_reclaim_acquire mm/page_alloc.c:3709 [inline]
fs_reclaim_acquire+0xcc/0x150 mm/page_alloc.c:3700
might_alloc include/linux/sched/mm.h:303 [inline]
prepare_alloc_pages.constprop.0+0x155/0x560 mm/page_alloc.c:4338
__alloc_pages+0x193/0x2440 mm/page_alloc.c:4556
alloc_pages_mpol+0x258/0x600 mm/mempolicy.c:2133
stack_depot_save_flags+0x568/0x900 lib/stackdepot.c:676
kasan_save_stack+0x42/0x60 mm/kasan/common.c:48
kasan_save_track+0x14/0x30 mm/kasan/common.c:68
unpoison_slab_object mm/kasan/common.c:312 [inline]
__kasan_mempool_unpoison_object+0x12c/0x1b0 mm/kasan/common.c:535
kasan_mempool_unpoison_object include/linux/kasan.h:339 [inline]
kasan_unpoison_element mm/mempool.c:130 [inline]
remove_element+0x160/0x1e0 mm/mempool.c:150
mempool_alloc+0x257/0x390 mm/mempool.c:414
__sg_alloc_table+0x25d/0x390 lib/scatterlist.c:321
sg_alloc_table_chained+0x97/0x1d0 lib/sg_pool.c:133
scsi_alloc_sgtables+0x1cd/0xfc0 drivers/scsi/scsi_lib.c:1042
sd_setup_read_write_cmnd drivers/scsi/sd.c:1200 [inline]
sd_init_command+0xafa/0x34b0 drivers/scsi/sd.c:1325
scsi_prepare_cmd drivers/scsi/scsi_lib.c:1607 [inline]
scsi_queue_rq+0x1ff8/0x35f0 drivers/scsi/scsi_lib.c:1741
blk_mq_dispatch_rq_list+0x452/0x2030 block/blk-mq.c:2070
__blk_mq_do_dispatch_sched block/blk-mq-sched.c:170 [inline]
blk_mq_do_dispatch_sched block/blk-mq-sched.c:184 [inline]
__blk_mq_sched_dispatch_requests+0xce0/0x1620 block/blk-mq-sched.c:309
blk_mq_sched_dispatch_requests+0xd4/0x150 block/blk-mq-sched.c:331
blk_mq_run_hw_queue+0x645/0x9a0 block/blk-mq.c:2285
blk_mq_dispatch_plug_list block/blk-mq.c:2785 [inline]
blk_mq_flush_plug_list.part.0+0x5f3/0x1d20 block/blk-mq.c:2833
blk_mq_flush_plug_list block/blk-mq.c:1296 [inline]
blk_add_rq_to_plug+0x117/0x540 block/blk-mq.c:1299
blk_mq_submit_bio+0x1625/0x2270 block/blk-mq.c:3027
__submit_bio+0xfd/0x310 block/blk-core.c:608
__submit_bio_noacct_mq block/blk-core.c:687 [inline]
submit_bio_noacct_nocheck+0x84b/0xba0 block/blk-core.c:716
submit_bio_noacct+0x747/0x1b50 block/blk-core.c:826
iomap_dio_submit_bio+0x1d3/0x240 fs/iomap/direct-io.c:80
iomap_dio_bio_iter+0xa4a/0x16c0 fs/iomap/direct-io.c:417
iomap_dio_iter fs/iomap/direct-io.c:500 [inline]
__iomap_dio_rw+0xd7b/0x1bd0 fs/iomap/direct-io.c:659
iomap_dio_rw+0x40/0xa0 fs/iomap/direct-io.c:748
ext4_dio_write_iter fs/ext4/file.c:577 [inline]
ext4_file_write_iter+0x12c6/0x1960 fs/ext4/file.c:696
call_write_iter include/linux/fs.h:2087 [inline]
do_iter_readv_writev+0x41d/0x670 fs/read_write.c:741
vfs_writev+0x36f/0xdb0 fs/read_write.c:971
do_pwritev+0x1b3/0x260 fs/read_write.c:1072
__do_sys_pwritev2 fs/read_write.c:1131 [inline]
__se_sys_pwritev2 fs/read_write.c:1122 [inline]
__x64_sys_pwritev2+0xef/0x160 fs/read_write.c:1122
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xd5/0x270 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x6f/0x77
RIP: 0033:0x7f4b1d87dda9
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 20 00 00 90 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 b0 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f4b1e6ad0c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000148
RAX: ffffffffffffffda RBX: 00007f4b1d9abf80 RCX: 00007f4b1d87dda9
RDX: 0000000000000001 RSI: 0000000020000240 RDI: 0000000000000003
RBP: 00007f4b1e6ad120 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002
R13: 000000000000000b R14: 00007f4b1d9abf80 R15: 00007ffcd63e5928
</TASK>
BUG: sleeping function called from invalid context at include/linux/sched/mm.h:306
in_atomic(): 1, irqs_disabled(): 1, non_block: 0, pid: 13441, name: syz-executor.0
preempt_count: 1, expected: 0
RCU nest depth: 1, expected: 0
INFO: lockdep is turned off.
irq event stamp: 89064
hardirqs last enabled at (89063): [<ffffffff8ac7fb72>] __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:151 [inline]
hardirqs last enabled at (89063): [<ffffffff8ac7fb72>] _raw_spin_unlock_irqrestore+0x52/0x80 kernel/locking/spinlock.c:194
hardirqs last disabled at (89064): [<ffffffff8ac7f882>] __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:108 [inline]
hardirqs last disabled at (89064): [<ffffffff8ac7f882>] _raw_spin_lock_irqsave+0x52/0x60 kernel/locking/spinlock.c:162
softirqs last enabled at (88412): [<ffffffff8ac829dc>] softirq_handle_end kernel/softirq.c:399 [inline]
softirqs last enabled at (88412): [<ffffffff8ac829dc>] __do_softirq+0x59c/0x8e7 kernel/softirq.c:582
softirqs last disabled at (88351): [<ffffffff815166db>] invoke_softirq kernel/softirq.c:427 [inline]
softirqs last disabled at (88351): [<ffffffff815166db>] __irq_exit_rcu kernel/softirq.c:632 [inline]
softirqs last disabled at (88351): [<ffffffff815166db>] irq_exit_rcu+0xbb/0x120 kernel/softirq.c:644
Preemption disabled at:
[<0000000000000000>] 0x0
CPU: 3 PID: 13441 Comm: syz-executor.0 Not tainted 6.8.0-rc6-syzkaller-00194-g17ba56605bfd #0
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
Call Trace:
<TASK>
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0xd9/0x1b0 lib/dump_stack.c:106
__might_resched+0x3c7/0x5e0 kernel/sched/core.c:10176
might_alloc include/linux/sched/mm.h:306 [inline]
prepare_alloc_pages.constprop.0+0x3d2/0x560 mm/page_alloc.c:4338
__alloc_pages+0x193/0x2440 mm/page_alloc.c:4556
alloc_pages_mpol+0x258/0x600 mm/mempolicy.c:2133
stack_depot_save_flags+0x568/0x900 lib/stackdepot.c:676
kasan_save_stack+0x42/0x60 mm/kasan/common.c:48
kasan_save_track+0x14/0x30 mm/kasan/common.c:68
unpoison_slab_object mm/kasan/common.c:312 [inline]
__kasan_mempool_unpoison_object+0x12c/0x1b0 mm/kasan/common.c:535
kasan_mempool_unpoison_object include/linux/kasan.h:339 [inline]
kasan_unpoison_element mm/mempool.c:130 [inline]
remove_element+0x160/0x1e0 mm/mempool.c:150
mempool_alloc+0x257/0x390 mm/mempool.c:414
__sg_alloc_table+0x25d/0x390 lib/scatterlist.c:321
sg_alloc_table_chained+0x97/0x1d0 lib/sg_pool.c:133
scsi_alloc_sgtables+0x1cd/0xfc0 drivers/scsi/scsi_lib.c:1042
sd_setup_read_write_cmnd drivers/scsi/sd.c:1200 [inline]
sd_init_command+0xafa/0x34b0 drivers/scsi/sd.c:1325
scsi_prepare_cmd drivers/scsi/scsi_lib.c:1607 [inline]
scsi_queue_rq+0x1ff8/0x35f0 drivers/scsi/scsi_lib.c:1741
blk_mq_dispatch_rq_list+0x452/0x2030 block/blk-mq.c:2070
__blk_mq_do_dispatch_sched block/blk-mq-sched.c:170 [inline]
blk_mq_do_dispatch_sched block/blk-mq-sched.c:184 [inline]
__blk_mq_sched_dispatch_requests+0xce0/0x1620 block/blk-mq-sched.c:309
blk_mq_sched_dispatch_requests+0xd4/0x150 block/blk-mq-sched.c:331
blk_mq_run_hw_queue+0x645/0x9a0 block/blk-mq.c:2285
blk_mq_dispatch_plug_list block/blk-mq.c:2785 [inline]
blk_mq_flush_plug_list.part.0+0x5f3/0x1d20 block/blk-mq.c:2833
blk_mq_flush_plug_list block/blk-mq.c:1296 [inline]
blk_add_rq_to_plug+0x117/0x540 block/blk-mq.c:1299
blk_mq_submit_bio+0x1625/0x2270 block/blk-mq.c:3027
__submit_bio+0xfd/0x310 block/blk-core.c:608
__submit_bio_noacct_mq block/blk-core.c:687 [inline]
submit_bio_noacct_nocheck+0x84b/0xba0 block/blk-core.c:716
submit_bio_noacct+0x747/0x1b50 block/blk-core.c:826
iomap_dio_submit_bio+0x1d3/0x240 fs/iomap/direct-io.c:80
iomap_dio_bio_iter+0xa4a/0x16c0 fs/iomap/direct-io.c:417
iomap_dio_iter fs/iomap/direct-io.c:500 [inline]
__iomap_dio_rw+0xd7b/0x1bd0 fs/iomap/direct-io.c:659
iomap_dio_rw+0x40/0xa0 fs/iomap/direct-io.c:748
ext4_dio_write_iter fs/ext4/file.c:577 [inline]
ext4_file_write_iter+0x12c6/0x1960 fs/ext4/file.c:696
call_write_iter include/linux/fs.h:2087 [inline]
do_iter_readv_writev+0x41d/0x670 fs/read_write.c:741
vfs_writev+0x36f/0xdb0 fs/read_write.c:971
do_pwritev+0x1b3/0x260 fs/read_write.c:1072
__do_sys_pwritev2 fs/read_write.c:1131 [inline]
__se_sys_pwritev2 fs/read_write.c:1122 [inline]
__x64_sys_pwritev2+0xef/0x160 fs/read_write.c:1122
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xd5/0x270 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x6f/0x77
RIP: 0033:0x7f4b1d87dda9
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 20 00 00 90 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 b0 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f4b1e6ad0c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000148
RAX: ffffffffffffffda RBX: 00007f4b1d9abf80 RCX: 00007f4b1d87dda9
RDX: 0000000000000001 RSI: 0000000020000240 RDI: 0000000000000003
RBP: 00007f4b1e6ad120 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002
R13: 000000000000000b R14: 00007f4b1d9abf80 R15: 00007ffcd63e5928
</TASK>
syz-executor.0 (13441) used greatest stack depth: 20904 bytes left
---
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syzbot found the following issue on:
HEAD commit: 17ba56605bfd Merge tag 'iommu-fix-v6.8-rc6' of git://git.k..
git tree: upstream
console output: https://syzkaller.appspot.com/x/log.txt?x=14240bba180000
kernel config: https://syzkaller.appspot.com/x/.config?x=be0288b26c967205
dashboard link: https://syzkaller.appspot.com/bug?extid=03a410b5470dc0d57748
compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40
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-17ba5660.raw.xz
vmlinux: https://storage.googleapis.com/syzbot-assets/1846d2ec3e0f/vmlinux-17ba5660.xz
kernel image: https://storage.googleapis.com/syzbot-assets/c24b84f13f11/bzImage-17ba5660.xz
IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+03a410...@syzkaller.appspotmail.com
=====================================================
WARNING: SOFTIRQ-safe -> SOFTIRQ-unsafe lock order detected
6.8.0-rc6-syzkaller-00194-g17ba56605bfd #0 Not tainted
-----------------------------------------------------
syz-executor.0/13441 [HC0[0]:SC0[0]:HE0:SE1] is trying to acquire:
ffffffff8d93fc00 (mmu_notifier_invalidate_range_start){+.+.}-{0:0}, at: fs_reclaim_acquire mm/page_alloc.c:3709 [inline]
ffffffff8d93fc00 (mmu_notifier_invalidate_range_start){+.+.}-{0:0}, at: fs_reclaim_acquire+0xb0/0x150 mm/page_alloc.c:3700
and this task is already holding:
ffff88801a379718 (&pool->lock#3){..-.}-{2:2}, at: mempool_alloc+0x1ff/0x390 mm/mempool.c:412
which would create a new lock dependency:
(&pool->lock#3){..-.}-{2:2} -> (mmu_notifier_invalidate_range_start){+.+.}-{0:0}
but this new dependency connects a SOFTIRQ-irq-safe lock:
(&pool->lock#3){..-.}-{2:2}
... which became SOFTIRQ-irq-safe at:
lock_acquire kernel/locking/lockdep.c:5754 [inline]
lock_acquire+0x1ae/0x520 kernel/locking/lockdep.c:5719
__raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline]
_raw_spin_lock_irqsave+0x3a/0x60 kernel/locking/spinlock.c:162
mempool_free+0x10a/0x3b0 mm/mempool.c:545
bvec_free+0xfb/0x120 block/bio.c:168
bio_free+0xaa/0x130 block/bio.c:237
bio_put_percpu_cache block/bio.c:767 [inline]
bio_put+0x2fb/0x650 block/bio.c:806
iomap_dio_bio_end_io+0x28a/0x6c0 fs/iomap/direct-io.c:230
bio_endio+0x59c/0x6b0 block/bio.c:1608
req_bio_endio block/blk-mq.c:792 [inline]
blk_update_request+0x635/0x1710 block/blk-mq.c:937
scsi_end_request+0x7b/0x9c0 drivers/scsi/scsi_lib.c:539
scsi_io_completion+0x17c/0x14c0 drivers/scsi/scsi_lib.c:977
scsi_complete+0x124/0x250 drivers/scsi/scsi_lib.c:1439
blk_complete_reqs+0xae/0xf0 block/blk-mq.c:1135
__do_softirq+0x21c/0x8e7 kernel/softirq.c:553
run_ksoftirqd kernel/softirq.c:921 [inline]
run_ksoftirqd+0x35/0x60 kernel/softirq.c:913
smpboot_thread_fn+0x669/0xa20 kernel/smpboot.c:164
kthread+0x2c6/0x3b0 kernel/kthread.c:388
ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1b/0x30 arch/x86/entry/entry_64.S:243
to a SOFTIRQ-irq-unsafe lock:
(mmu_notifier_invalidate_range_start){+.+.}-{0:0}
... which became SOFTIRQ-irq-unsafe at:
...
lock_acquire kernel/locking/lockdep.c:5754 [inline]
lock_acquire+0x1ae/0x520 kernel/locking/lockdep.c:5719
fs_reclaim_acquire mm/page_alloc.c:3709 [inline]
fs_reclaim_acquire+0xcc/0x150 mm/page_alloc.c:3700
might_alloc include/linux/sched/mm.h:303 [inline]
slab_pre_alloc_hook mm/slub.c:3761 [inline]
slab_alloc_node mm/slub.c:3842 [inline]
kmalloc_trace+0x51/0x340 mm/slub.c:4007
kmalloc include/linux/slab.h:590 [inline]
kzalloc include/linux/slab.h:711 [inline]
__kthread_create_worker+0x4d/0x200 kernel/kthread.c:864
kthread_create_worker+0xcd/0x110 kernel/kthread.c:907
wq_cpu_intensive_thresh_init kernel/workqueue.c:6704 [inline]
workqueue_init+0x25/0x830 kernel/workqueue.c:6753
kernel_init_freeable+0x335/0xc10 init/main.c:1536
kernel_init+0x1c/0x2a0 init/main.c:1441
ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1b/0x30 arch/x86/entry/entry_64.S:243
other info that might help us debug this:
Possible interrupt unsafe locking scenario:
CPU0 CPU1
---- ----
lock(mmu_notifier_invalidate_range_start);
local_irq_disable();
lock(&pool->lock#3);
lock(mmu_notifier_invalidate_range_start);
<Interrupt>
lock(&pool->lock#3);
*** DEADLOCK ***
4 locks held by syz-executor.0/13441:
#0: ffff8880241da420 (sb_writers#5){.+.+}-{0:0}, at: do_pwritev+0x1b3/0x260 fs/read_write.c:1072
#1: ffff888031e54000 (&sb->s_type->i_mutex_key#7){++++}-{3:3}, at: inode_lock include/linux/fs.h:804 [inline]
#1: ffff888031e54000 (&sb->s_type->i_mutex_key#7){++++}-{3:3}, at: ext4_dio_write_iter fs/ext4/file.c:530 [inline]
#1: ffff888031e54000 (&sb->s_type->i_mutex_key#7){++++}-{3:3}, at: ext4_file_write_iter+0xc8b/0x1960 fs/ext4/file.c:696
#2: ffffffff8d7ad220 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:298 [inline]
#2: ffffffff8d7ad220 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:750 [inline]
#2: ffffffff8d7ad220 (rcu_read_lock){....}-{1:2}, at: blk_mq_run_hw_queue+0x619/0x9a0 block/blk-mq.c:2285
#3: ffff88801a379718 (&pool->lock#3){..-.}-{2:2}, at: mempool_alloc+0x1ff/0x390 mm/mempool.c:412
the dependencies between SOFTIRQ-irq-safe lock and the holding lock:
-> (&pool->lock#3){..-.}-{2:2} {
IN-SOFTIRQ-W at:
lock_acquire kernel/locking/lockdep.c:5754 [inline]
lock_acquire+0x1ae/0x520 kernel/locking/lockdep.c:5719
__raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline]
_raw_spin_lock_irqsave+0x3a/0x60 kernel/locking/spinlock.c:162
mempool_free+0x10a/0x3b0 mm/mempool.c:545
bvec_free+0xfb/0x120 block/bio.c:168
bio_free+0xaa/0x130 block/bio.c:237
bio_put_percpu_cache block/bio.c:767 [inline]
bio_put+0x2fb/0x650 block/bio.c:806
iomap_dio_bio_end_io+0x28a/0x6c0 fs/iomap/direct-io.c:230
bio_endio+0x59c/0x6b0 block/bio.c:1608
req_bio_endio block/blk-mq.c:792 [inline]
blk_update_request+0x635/0x1710 block/blk-mq.c:937
scsi_end_request+0x7b/0x9c0 drivers/scsi/scsi_lib.c:539
scsi_io_completion+0x17c/0x14c0 drivers/scsi/scsi_lib.c:977
scsi_complete+0x124/0x250 drivers/scsi/scsi_lib.c:1439
blk_complete_reqs+0xae/0xf0 block/blk-mq.c:1135
__do_softirq+0x21c/0x8e7 kernel/softirq.c:553
run_ksoftirqd kernel/softirq.c:921 [inline]
run_ksoftirqd+0x35/0x60 kernel/softirq.c:913
smpboot_thread_fn+0x669/0xa20 kernel/smpboot.c:164
kthread+0x2c6/0x3b0 kernel/kthread.c:388
ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1b/0x30 arch/x86/entry/entry_64.S:243
INITIAL USE at:
lock_acquire kernel/locking/lockdep.c:5754 [inline]
lock_acquire+0x1ae/0x520 kernel/locking/lockdep.c:5719
__raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline]
_raw_spin_lock_irqsave+0x3a/0x60 kernel/locking/spinlock.c:162
mempool_alloc+0x1ff/0x390 mm/mempool.c:412
bvec_alloc+0x192/0x210 block/bio.c:211
bio_alloc_bioset+0x4b9/0x8b0 block/bio.c:558
bio_alloc include/linux/bio.h:437 [inline]
iomap_dio_alloc_bio fs/iomap/direct-io.c:61 [inline]
iomap_dio_alloc_bio.isra.0+0x86/0xc0 fs/iomap/direct-io.c:55
iomap_dio_bio_iter+0xaa7/0x16c0 fs/iomap/direct-io.c:379
iomap_dio_iter fs/iomap/direct-io.c:500 [inline]
__iomap_dio_rw+0xd7b/0x1bd0 fs/iomap/direct-io.c:659
iomap_dio_rw+0x40/0xa0 fs/iomap/direct-io.c:748
ext4_dio_write_iter fs/ext4/file.c:577 [inline]
ext4_file_write_iter+0x12c6/0x1960 fs/ext4/file.c:696
call_write_iter include/linux/fs.h:2087 [inline]
do_iter_readv_writev+0x41d/0x670 fs/read_write.c:741
vfs_writev+0x36f/0xdb0 fs/read_write.c:971
do_pwritev+0x1b3/0x260 fs/read_write.c:1072
__do_sys_pwritev2 fs/read_write.c:1131 [inline]
__se_sys_pwritev2 fs/read_write.c:1122 [inline]
__x64_sys_pwritev2+0xef/0x160 fs/read_write.c:1122
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xd5/0x270 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x6f/0x77
}
... key at: [<ffffffff9463bc00>] __key.1+0x0/0x40
the dependencies between the lock to be acquired
and SOFTIRQ-irq-unsafe lock:
-> (mmu_notifier_invalidate_range_start){+.+.}-{0:0} {
HARDIRQ-ON-W at:
lock_acquire kernel/locking/lockdep.c:5754 [inline]
lock_acquire+0x1ae/0x520 kernel/locking/lockdep.c:5719
fs_reclaim_acquire mm/page_alloc.c:3709 [inline]
fs_reclaim_acquire+0xcc/0x150 mm/page_alloc.c:3700
might_alloc include/linux/sched/mm.h:303 [inline]
slab_pre_alloc_hook mm/slub.c:3761 [inline]
slab_alloc_node mm/slub.c:3842 [inline]
kmalloc_trace+0x51/0x340 mm/slub.c:4007
kmalloc include/linux/slab.h:590 [inline]
kzalloc include/linux/slab.h:711 [inline]
__kthread_create_worker+0x4d/0x200 kernel/kthread.c:864
kthread_create_worker+0xcd/0x110 kernel/kthread.c:907
wq_cpu_intensive_thresh_init kernel/workqueue.c:6704 [inline]
workqueue_init+0x25/0x830 kernel/workqueue.c:6753
kernel_init_freeable+0x335/0xc10 init/main.c:1536
kernel_init+0x1c/0x2a0 init/main.c:1441
ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1b/0x30 arch/x86/entry/entry_64.S:243
SOFTIRQ-ON-W at:
lock_acquire kernel/locking/lockdep.c:5754 [inline]
lock_acquire+0x1ae/0x520 kernel/locking/lockdep.c:5719
fs_reclaim_acquire mm/page_alloc.c:3709 [inline]
fs_reclaim_acquire+0xcc/0x150 mm/page_alloc.c:3700
might_alloc include/linux/sched/mm.h:303 [inline]
slab_pre_alloc_hook mm/slub.c:3761 [inline]
slab_alloc_node mm/slub.c:3842 [inline]
kmalloc_trace+0x51/0x340 mm/slub.c:4007
kmalloc include/linux/slab.h:590 [inline]
kzalloc include/linux/slab.h:711 [inline]
__kthread_create_worker+0x4d/0x200 kernel/kthread.c:864
kthread_create_worker+0xcd/0x110 kernel/kthread.c:907
wq_cpu_intensive_thresh_init kernel/workqueue.c:6704 [inline]
workqueue_init+0x25/0x830 kernel/workqueue.c:6753
kernel_init_freeable+0x335/0xc10 init/main.c:1536
kernel_init+0x1c/0x2a0 init/main.c:1441
ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1b/0x30 arch/x86/entry/entry_64.S:243
INITIAL USE at:
lock_acquire kernel/locking/lockdep.c:5754 [inline]
lock_acquire+0x1ae/0x520 kernel/locking/lockdep.c:5719
fs_reclaim_acquire mm/page_alloc.c:3709 [inline]
fs_reclaim_acquire+0xcc/0x150 mm/page_alloc.c:3700
might_alloc include/linux/sched/mm.h:303 [inline]
slab_pre_alloc_hook mm/slub.c:3761 [inline]
slab_alloc_node mm/slub.c:3842 [inline]
kmalloc_trace+0x51/0x340 mm/slub.c:4007
kmalloc include/linux/slab.h:590 [inline]
kzalloc include/linux/slab.h:711 [inline]
__kthread_create_worker+0x4d/0x200 kernel/kthread.c:864
kthread_create_worker+0xcd/0x110 kernel/kthread.c:907
wq_cpu_intensive_thresh_init kernel/workqueue.c:6704 [inline]
workqueue_init+0x25/0x830 kernel/workqueue.c:6753
kernel_init_freeable+0x335/0xc10 init/main.c:1536
kernel_init+0x1c/0x2a0 init/main.c:1441
ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1b/0x30 arch/x86/entry/entry_64.S:243
}
... key at: [<ffffffff8d93fc00>] __mmu_notifier_invalidate_range_start_map+0x0/0x60
... acquired at:
lock_acquire kernel/locking/lockdep.c:5754 [inline]
lock_acquire+0x1ae/0x520 kernel/locking/lockdep.c:5719
fs_reclaim_acquire mm/page_alloc.c:3709 [inline]
fs_reclaim_acquire+0xcc/0x150 mm/page_alloc.c:3700
might_alloc include/linux/sched/mm.h:303 [inline]
prepare_alloc_pages.constprop.0+0x155/0x560 mm/page_alloc.c:4338
__alloc_pages+0x193/0x2440 mm/page_alloc.c:4556
alloc_pages_mpol+0x258/0x600 mm/mempolicy.c:2133
stack_depot_save_flags+0x568/0x900 lib/stackdepot.c:676
kasan_save_stack+0x42/0x60 mm/kasan/common.c:48
kasan_save_track+0x14/0x30 mm/kasan/common.c:68
unpoison_slab_object mm/kasan/common.c:312 [inline]
__kasan_mempool_unpoison_object+0x12c/0x1b0 mm/kasan/common.c:535
kasan_mempool_unpoison_object include/linux/kasan.h:339 [inline]
kasan_unpoison_element mm/mempool.c:130 [inline]
remove_element+0x160/0x1e0 mm/mempool.c:150
mempool_alloc+0x257/0x390 mm/mempool.c:414
__sg_alloc_table+0x25d/0x390 lib/scatterlist.c:321
sg_alloc_table_chained+0x97/0x1d0 lib/sg_pool.c:133
scsi_alloc_sgtables+0x1cd/0xfc0 drivers/scsi/scsi_lib.c:1042
sd_setup_read_write_cmnd drivers/scsi/sd.c:1200 [inline]
sd_init_command+0xafa/0x34b0 drivers/scsi/sd.c:1325
scsi_prepare_cmd drivers/scsi/scsi_lib.c:1607 [inline]
scsi_queue_rq+0x1ff8/0x35f0 drivers/scsi/scsi_lib.c:1741
blk_mq_dispatch_rq_list+0x452/0x2030 block/blk-mq.c:2070
__blk_mq_do_dispatch_sched block/blk-mq-sched.c:170 [inline]
blk_mq_do_dispatch_sched block/blk-mq-sched.c:184 [inline]
__blk_mq_sched_dispatch_requests+0xce0/0x1620 block/blk-mq-sched.c:309
blk_mq_sched_dispatch_requests+0xd4/0x150 block/blk-mq-sched.c:331
blk_mq_run_hw_queue+0x645/0x9a0 block/blk-mq.c:2285
blk_mq_dispatch_plug_list block/blk-mq.c:2785 [inline]
blk_mq_flush_plug_list.part.0+0x5f3/0x1d20 block/blk-mq.c:2833
blk_mq_flush_plug_list block/blk-mq.c:1296 [inline]
blk_add_rq_to_plug+0x117/0x540 block/blk-mq.c:1299
blk_mq_submit_bio+0x1625/0x2270 block/blk-mq.c:3027
__submit_bio+0xfd/0x310 block/blk-core.c:608
__submit_bio_noacct_mq block/blk-core.c:687 [inline]
submit_bio_noacct_nocheck+0x84b/0xba0 block/blk-core.c:716
submit_bio_noacct+0x747/0x1b50 block/blk-core.c:826
iomap_dio_submit_bio+0x1d3/0x240 fs/iomap/direct-io.c:80
iomap_dio_bio_iter+0xa4a/0x16c0 fs/iomap/direct-io.c:417
iomap_dio_iter fs/iomap/direct-io.c:500 [inline]
__iomap_dio_rw+0xd7b/0x1bd0 fs/iomap/direct-io.c:659
iomap_dio_rw+0x40/0xa0 fs/iomap/direct-io.c:748
ext4_dio_write_iter fs/ext4/file.c:577 [inline]
ext4_file_write_iter+0x12c6/0x1960 fs/ext4/file.c:696
call_write_iter include/linux/fs.h:2087 [inline]
do_iter_readv_writev+0x41d/0x670 fs/read_write.c:741
vfs_writev+0x36f/0xdb0 fs/read_write.c:971
do_pwritev+0x1b3/0x260 fs/read_write.c:1072
__do_sys_pwritev2 fs/read_write.c:1131 [inline]
__se_sys_pwritev2 fs/read_write.c:1122 [inline]
__x64_sys_pwritev2+0xef/0x160 fs/read_write.c:1122
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xd5/0x270 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x6f/0x77
stack backtrace:
CPU: 3 PID: 13441 Comm: syz-executor.0 Not tainted 6.8.0-rc6-syzkaller-00194-g17ba56605bfd #0
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
Call Trace:
<TASK>
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0xd9/0x1b0 lib/dump_stack.c:106
print_bad_irq_dependency kernel/locking/lockdep.c:2626 [inline]
check_irq_usage+0xe3c/0x1490 kernel/locking/lockdep.c:2865
check_prev_add kernel/locking/lockdep.c:3138 [inline]
check_prevs_add kernel/locking/lockdep.c:3253 [inline]
validate_chain kernel/locking/lockdep.c:3869 [inline]
__lock_acquire+0x2465/0x3b40 kernel/locking/lockdep.c:5137
lock_acquire kernel/locking/lockdep.c:5754 [inline]
lock_acquire+0x1ae/0x520 kernel/locking/lockdep.c:5719
fs_reclaim_acquire mm/page_alloc.c:3709 [inline]
fs_reclaim_acquire+0xcc/0x150 mm/page_alloc.c:3700
might_alloc include/linux/sched/mm.h:303 [inline]
prepare_alloc_pages.constprop.0+0x155/0x560 mm/page_alloc.c:4338
__alloc_pages+0x193/0x2440 mm/page_alloc.c:4556
alloc_pages_mpol+0x258/0x600 mm/mempolicy.c:2133
stack_depot_save_flags+0x568/0x900 lib/stackdepot.c:676
kasan_save_stack+0x42/0x60 mm/kasan/common.c:48
kasan_save_track+0x14/0x30 mm/kasan/common.c:68
unpoison_slab_object mm/kasan/common.c:312 [inline]
__kasan_mempool_unpoison_object+0x12c/0x1b0 mm/kasan/common.c:535
kasan_mempool_unpoison_object include/linux/kasan.h:339 [inline]
kasan_unpoison_element mm/mempool.c:130 [inline]
remove_element+0x160/0x1e0 mm/mempool.c:150
mempool_alloc+0x257/0x390 mm/mempool.c:414
__sg_alloc_table+0x25d/0x390 lib/scatterlist.c:321
sg_alloc_table_chained+0x97/0x1d0 lib/sg_pool.c:133
scsi_alloc_sgtables+0x1cd/0xfc0 drivers/scsi/scsi_lib.c:1042
sd_setup_read_write_cmnd drivers/scsi/sd.c:1200 [inline]
sd_init_command+0xafa/0x34b0 drivers/scsi/sd.c:1325
scsi_prepare_cmd drivers/scsi/scsi_lib.c:1607 [inline]
scsi_queue_rq+0x1ff8/0x35f0 drivers/scsi/scsi_lib.c:1741
blk_mq_dispatch_rq_list+0x452/0x2030 block/blk-mq.c:2070
__blk_mq_do_dispatch_sched block/blk-mq-sched.c:170 [inline]
blk_mq_do_dispatch_sched block/blk-mq-sched.c:184 [inline]
__blk_mq_sched_dispatch_requests+0xce0/0x1620 block/blk-mq-sched.c:309
blk_mq_sched_dispatch_requests+0xd4/0x150 block/blk-mq-sched.c:331
blk_mq_run_hw_queue+0x645/0x9a0 block/blk-mq.c:2285
blk_mq_dispatch_plug_list block/blk-mq.c:2785 [inline]
blk_mq_flush_plug_list.part.0+0x5f3/0x1d20 block/blk-mq.c:2833
blk_mq_flush_plug_list block/blk-mq.c:1296 [inline]
blk_add_rq_to_plug+0x117/0x540 block/blk-mq.c:1299
blk_mq_submit_bio+0x1625/0x2270 block/blk-mq.c:3027
__submit_bio+0xfd/0x310 block/blk-core.c:608
__submit_bio_noacct_mq block/blk-core.c:687 [inline]
submit_bio_noacct_nocheck+0x84b/0xba0 block/blk-core.c:716
submit_bio_noacct+0x747/0x1b50 block/blk-core.c:826
iomap_dio_submit_bio+0x1d3/0x240 fs/iomap/direct-io.c:80
iomap_dio_bio_iter+0xa4a/0x16c0 fs/iomap/direct-io.c:417
iomap_dio_iter fs/iomap/direct-io.c:500 [inline]
__iomap_dio_rw+0xd7b/0x1bd0 fs/iomap/direct-io.c:659
iomap_dio_rw+0x40/0xa0 fs/iomap/direct-io.c:748
ext4_dio_write_iter fs/ext4/file.c:577 [inline]
ext4_file_write_iter+0x12c6/0x1960 fs/ext4/file.c:696
call_write_iter include/linux/fs.h:2087 [inline]
do_iter_readv_writev+0x41d/0x670 fs/read_write.c:741
vfs_writev+0x36f/0xdb0 fs/read_write.c:971
do_pwritev+0x1b3/0x260 fs/read_write.c:1072
__do_sys_pwritev2 fs/read_write.c:1131 [inline]
__se_sys_pwritev2 fs/read_write.c:1122 [inline]
__x64_sys_pwritev2+0xef/0x160 fs/read_write.c:1122
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xd5/0x270 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x6f/0x77
RIP: 0033:0x7f4b1d87dda9
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 20 00 00 90 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 b0 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f4b1e6ad0c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000148
RAX: ffffffffffffffda RBX: 00007f4b1d9abf80 RCX: 00007f4b1d87dda9
RDX: 0000000000000001 RSI: 0000000020000240 RDI: 0000000000000003
RBP: 00007f4b1e6ad120 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002
R13: 000000000000000b R14: 00007f4b1d9abf80 R15: 00007ffcd63e5928
</TASK>
BUG: sleeping function called from invalid context at include/linux/sched/mm.h:306
in_atomic(): 1, irqs_disabled(): 1, non_block: 0, pid: 13441, name: syz-executor.0
preempt_count: 1, expected: 0
RCU nest depth: 1, expected: 0
INFO: lockdep is turned off.
irq event stamp: 89064
hardirqs last enabled at (89063): [<ffffffff8ac7fb72>] __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:151 [inline]
hardirqs last enabled at (89063): [<ffffffff8ac7fb72>] _raw_spin_unlock_irqrestore+0x52/0x80 kernel/locking/spinlock.c:194
hardirqs last disabled at (89064): [<ffffffff8ac7f882>] __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:108 [inline]
hardirqs last disabled at (89064): [<ffffffff8ac7f882>] _raw_spin_lock_irqsave+0x52/0x60 kernel/locking/spinlock.c:162
softirqs last enabled at (88412): [<ffffffff8ac829dc>] softirq_handle_end kernel/softirq.c:399 [inline]
softirqs last enabled at (88412): [<ffffffff8ac829dc>] __do_softirq+0x59c/0x8e7 kernel/softirq.c:582
softirqs last disabled at (88351): [<ffffffff815166db>] invoke_softirq kernel/softirq.c:427 [inline]
softirqs last disabled at (88351): [<ffffffff815166db>] __irq_exit_rcu kernel/softirq.c:632 [inline]
softirqs last disabled at (88351): [<ffffffff815166db>] irq_exit_rcu+0xbb/0x120 kernel/softirq.c:644
Preemption disabled at:
[<0000000000000000>] 0x0
CPU: 3 PID: 13441 Comm: syz-executor.0 Not tainted 6.8.0-rc6-syzkaller-00194-g17ba56605bfd #0
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
Call Trace:
<TASK>
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0xd9/0x1b0 lib/dump_stack.c:106
__might_resched+0x3c7/0x5e0 kernel/sched/core.c:10176
might_alloc include/linux/sched/mm.h:306 [inline]
prepare_alloc_pages.constprop.0+0x3d2/0x560 mm/page_alloc.c:4338
__alloc_pages+0x193/0x2440 mm/page_alloc.c:4556
alloc_pages_mpol+0x258/0x600 mm/mempolicy.c:2133
stack_depot_save_flags+0x568/0x900 lib/stackdepot.c:676
kasan_save_stack+0x42/0x60 mm/kasan/common.c:48
kasan_save_track+0x14/0x30 mm/kasan/common.c:68
unpoison_slab_object mm/kasan/common.c:312 [inline]
__kasan_mempool_unpoison_object+0x12c/0x1b0 mm/kasan/common.c:535
kasan_mempool_unpoison_object include/linux/kasan.h:339 [inline]
kasan_unpoison_element mm/mempool.c:130 [inline]
remove_element+0x160/0x1e0 mm/mempool.c:150
mempool_alloc+0x257/0x390 mm/mempool.c:414
__sg_alloc_table+0x25d/0x390 lib/scatterlist.c:321
sg_alloc_table_chained+0x97/0x1d0 lib/sg_pool.c:133
scsi_alloc_sgtables+0x1cd/0xfc0 drivers/scsi/scsi_lib.c:1042
sd_setup_read_write_cmnd drivers/scsi/sd.c:1200 [inline]
sd_init_command+0xafa/0x34b0 drivers/scsi/sd.c:1325
scsi_prepare_cmd drivers/scsi/scsi_lib.c:1607 [inline]
scsi_queue_rq+0x1ff8/0x35f0 drivers/scsi/scsi_lib.c:1741
blk_mq_dispatch_rq_list+0x452/0x2030 block/blk-mq.c:2070
__blk_mq_do_dispatch_sched block/blk-mq-sched.c:170 [inline]
blk_mq_do_dispatch_sched block/blk-mq-sched.c:184 [inline]
__blk_mq_sched_dispatch_requests+0xce0/0x1620 block/blk-mq-sched.c:309
blk_mq_sched_dispatch_requests+0xd4/0x150 block/blk-mq-sched.c:331
blk_mq_run_hw_queue+0x645/0x9a0 block/blk-mq.c:2285
blk_mq_dispatch_plug_list block/blk-mq.c:2785 [inline]
blk_mq_flush_plug_list.part.0+0x5f3/0x1d20 block/blk-mq.c:2833
blk_mq_flush_plug_list block/blk-mq.c:1296 [inline]
blk_add_rq_to_plug+0x117/0x540 block/blk-mq.c:1299
blk_mq_submit_bio+0x1625/0x2270 block/blk-mq.c:3027
__submit_bio+0xfd/0x310 block/blk-core.c:608
__submit_bio_noacct_mq block/blk-core.c:687 [inline]
submit_bio_noacct_nocheck+0x84b/0xba0 block/blk-core.c:716
submit_bio_noacct+0x747/0x1b50 block/blk-core.c:826
iomap_dio_submit_bio+0x1d3/0x240 fs/iomap/direct-io.c:80
iomap_dio_bio_iter+0xa4a/0x16c0 fs/iomap/direct-io.c:417
iomap_dio_iter fs/iomap/direct-io.c:500 [inline]
__iomap_dio_rw+0xd7b/0x1bd0 fs/iomap/direct-io.c:659
iomap_dio_rw+0x40/0xa0 fs/iomap/direct-io.c:748
ext4_dio_write_iter fs/ext4/file.c:577 [inline]
ext4_file_write_iter+0x12c6/0x1960 fs/ext4/file.c:696
call_write_iter include/linux/fs.h:2087 [inline]
do_iter_readv_writev+0x41d/0x670 fs/read_write.c:741
vfs_writev+0x36f/0xdb0 fs/read_write.c:971
do_pwritev+0x1b3/0x260 fs/read_write.c:1072
__do_sys_pwritev2 fs/read_write.c:1131 [inline]
__se_sys_pwritev2 fs/read_write.c:1122 [inline]
__x64_sys_pwritev2+0xef/0x160 fs/read_write.c:1122
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xd5/0x270 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x6f/0x77
RIP: 0033:0x7f4b1d87dda9
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 20 00 00 90 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 b0 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f4b1e6ad0c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000148
RAX: ffffffffffffffda RBX: 00007f4b1d9abf80 RCX: 00007f4b1d87dda9
RDX: 0000000000000001 RSI: 0000000020000240 RDI: 0000000000000003
RBP: 00007f4b1e6ad120 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002
R13: 000000000000000b R14: 00007f4b1d9abf80 R15: 00007ffcd63e5928
</TASK>
syz-executor.0 (13441) used greatest stack depth: 20904 bytes left
---
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