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+03a410b5470dc0d57748@xxxxxxxxxxxxxxxxxxxxxxxxx ===================================================== 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 --- 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@xxxxxxxxxxxxxxxx. 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
