================================ WARNING: inconsistent lock state 4.20.0-rc7+ #162 Not tainted -------------------------------- inconsistent {SOFTIRQ-ON-W} -> {IN-SOFTIRQ-W} usage. syz-executor4/6173 [HC0[0]:SC1[1]:HE1:SE0] takes: kobject: 'loop1' (00000000adfcd8ba): kobject_uevent_env 0000000092e7d534 (fs_reclaim){+.?.}, at: fs_reclaim_acquire.part.96+0x0/0x30 mm/internal.h:79 {SOFTIRQ-ON-W} state was registered at: lock_acquire+0x1ed/0x520 kernel/locking/lockdep.c:3844 __fs_reclaim_acquire mm/page_alloc.c:3730 [inline] fs_reclaim_acquire.part.96+0x24/0x30 mm/page_alloc.c:3741 fs_reclaim_acquire+0x14/0x20 mm/page_alloc.c:3742 slab_pre_alloc_hook mm/slab.h:418 [inline] slab_alloc_node mm/slab.c:3299 [inline] kmem_cache_alloc_node_trace+0x3c/0x740 mm/slab.c:3661 kmalloc_node include/linux/slab.h:584 [inline] kzalloc_node include/linux/slab.h:752 [inline] alloc_worker+0xc5/0x300 kernel/workqueue.c:1704 kobject: 'loop1' (00000000adfcd8ba): fill_kobj_path: path = '/devices/virtual/block/loop1' init_rescuer.part.25+0x1f/0x190 kernel/workqueue.c:4028 init_rescuer kernel/workqueue.c:4025 [inline] workqueue_init+0x491/0x744 kernel/workqueue.c:5794 kernel_init_freeable+0x2b0/0x5b4 init/main.c:1139 kernel_init+0x11/0x1ae init/main.c:1071 kobject: 'loop3' (0000000023a3b8ff): kobject_uevent_env ret_from_fork+0x3a/0x50 arch/x86/entry/entry_64.S:352 irq event stamp: 2487156 hardirqs last enabled at (2487156): [] console_unlock+0x947/0x1180 kernel/printk/printk.c:2443 hardirqs last disabled at (2487155): [] console_unlock+0x2d9/0x1180 kernel/printk/printk.c:2353 kobject: 'loop3' (0000000023a3b8ff): fill_kobj_path: path = '/devices/virtual/block/loop3' softirqs last enabled at (2486742): [] spin_unlock_bh include/linux/spinlock.h:374 [inline] softirqs last enabled at (2486742): [] release_sock+0x1ec/0x2c0 net/core/sock.c:2800 softirqs last disabled at (2487101): [] invoke_softirq kernel/softirq.c:373 [inline] softirqs last disabled at (2487101): [] irq_exit+0x17f/0x1c0 kernel/softirq.c:413 other info that might help us debug this: Possible unsafe locking scenario: CPU0 ---- lock(fs_reclaim); lock(fs_reclaim); *** DEADLOCK *** 6 locks held by syz-executor4/6173: #0: 0000000060160cc2 (&dup_mmap_sem){++++}, at: dup_mmap kernel/fork.c:476 [inline] #0: 0000000060160cc2 (&dup_mmap_sem){++++}, at: dup_mm kernel/fork.c:1323 [inline] #0: 0000000060160cc2 (&dup_mmap_sem){++++}, at: copy_mm kernel/fork.c:1378 [inline] #0: 0000000060160cc2 (&dup_mmap_sem){++++}, at: copy_process+0x365e/0x8790 kernel/fork.c:1922 #1: 000000002fd47645 (&mm->mmap_sem){++++}, at: dup_mmap kernel/fork.c:477 [inline] #1: 000000002fd47645 (&mm->mmap_sem){++++}, at: dup_mm kernel/fork.c:1323 [inline] #1: 000000002fd47645 (&mm->mmap_sem){++++}, at: copy_mm kernel/fork.c:1378 [inline] #1: 000000002fd47645 (&mm->mmap_sem){++++}, at: copy_process+0x367a/0x8790 kernel/fork.c:1922 #2: 000000002f9d4569 (&mm->mmap_sem/1){+.+.}, at: dup_mmap kernel/fork.c:486 [inline] #2: 000000002f9d4569 (&mm->mmap_sem/1){+.+.}, at: dup_mm kernel/fork.c:1323 [inline] #2: 000000002f9d4569 (&mm->mmap_sem/1){+.+.}, at: copy_mm kernel/fork.c:1378 [inline] #2: 000000002f9d4569 (&mm->mmap_sem/1){+.+.}, at: copy_process+0x36d2/0x8790 kernel/fork.c:1922 #3: 000000007585ba3f (&(ptlock_ptr(page))->rlock#2){+.+.}, at: spin_lock include/linux/spinlock.h:329 [inline] #3: 000000007585ba3f (&(ptlock_ptr(page))->rlock#2){+.+.}, at: copy_pte_range mm/memory.c:830 [inline] #3: 000000007585ba3f (&(ptlock_ptr(page))->rlock#2){+.+.}, at: copy_pmd_range mm/memory.c:906 [inline] #3: 000000007585ba3f (&(ptlock_ptr(page))->rlock#2){+.+.}, at: copy_pud_range mm/memory.c:940 [inline] #3: 000000007585ba3f (&(ptlock_ptr(page))->rlock#2){+.+.}, at: copy_p4d_range mm/memory.c:962 [inline] #3: 000000007585ba3f (&(ptlock_ptr(page))->rlock#2){+.+.}, at: copy_page_range+0xa48/0x26b0 mm/memory.c:1024 #4: 00000000ddd8f324 (&(ptlock_ptr(page))->rlock#2/1){+.+.}, at: copy_pte_range mm/memory.c:835 [inline] #4: 00000000ddd8f324 (&(ptlock_ptr(page))->rlock#2/1){+.+.}, at: copy_pmd_range mm/memory.c:906 [inline] #4: 00000000ddd8f324 (&(ptlock_ptr(page))->rlock#2/1){+.+.}, at: copy_pud_range mm/memory.c:940 [inline] #4: 00000000ddd8f324 (&(ptlock_ptr(page))->rlock#2/1){+.+.}, at: copy_p4d_range mm/memory.c:962 [inline] #4: 00000000ddd8f324 (&(ptlock_ptr(page))->rlock#2/1){+.+.}, at: copy_page_range+0xad8/0x26b0 mm/memory.c:1024 #5: 00000000f658fdea (rcu_callback){....}, at: __rcu_reclaim kernel/rcu/rcu.h:228 [inline] #5: 00000000f658fdea (rcu_callback){....}, at: rcu_do_batch kernel/rcu/tree.c:2437 [inline] #5: 00000000f658fdea (rcu_callback){....}, at: invoke_rcu_callbacks kernel/rcu/tree.c:2716 [inline] #5: 00000000f658fdea (rcu_callback){....}, at: rcu_process_callbacks+0x1103/0x1ac0 kernel/rcu/tree.c:2697 stack backtrace: CPU: 1 PID: 6173 Comm: syz-executor4 Not tainted 4.20.0-rc7+ #162 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+0x1d3/0x2c6 lib/dump_stack.c:113 print_usage_bug.cold.59+0x320/0x41a kernel/locking/lockdep.c:2472 valid_state kernel/locking/lockdep.c:2485 [inline] mark_lock_irq kernel/locking/lockdep.c:2679 [inline] mark_lock+0x1114/0x1cc0 kernel/locking/lockdep.c:3059 mark_irqflags kernel/locking/lockdep.c:2937 [inline] __lock_acquire+0x15b0/0x4c20 kernel/locking/lockdep.c:3298 lock_acquire+0x1ed/0x520 kernel/locking/lockdep.c:3844 __fs_reclaim_acquire mm/page_alloc.c:3730 [inline] fs_reclaim_acquire.part.96+0x24/0x30 mm/page_alloc.c:3741 fs_reclaim_acquire+0x14/0x20 mm/page_alloc.c:3742 slab_pre_alloc_hook mm/slab.h:418 [inline] slab_alloc mm/slab.c:3378 [inline] kmem_cache_alloc_trace+0x2d/0x750 mm/slab.c:3618 kmalloc include/linux/slab.h:546 [inline] kzalloc include/linux/slab.h:741 [inline] kobject_uevent_env+0x2f3/0x101e lib/kobject_uevent.c:514 kobject_uevent+0x1f/0x24 lib/kobject_uevent.c:636 kobject_cleanup lib/kobject.c:649 [inline] kobject_release lib/kobject.c:691 [inline] kref_put include/linux/kref.h:70 [inline] kobject_put.cold.9+0x170/0x2e4 lib/kobject.c:708 put_device+0x20/0x30 drivers/base/core.c:2024 delete_partition_rcu_cb+0x147/0x1b0 block/partition-generic.c:259 __rcu_reclaim kernel/rcu/rcu.h:240 [inline] rcu_do_batch kernel/rcu/tree.c:2437 [inline] invoke_rcu_callbacks kernel/rcu/tree.c:2716 [inline] rcu_process_callbacks+0x100a/0x1ac0 kernel/rcu/tree.c:2697 __do_softirq+0x30c/0xb2e kernel/softirq.c:292 invoke_softirq kernel/softirq.c:373 [inline] irq_exit+0x17f/0x1c0 kernel/softirq.c:413 exiting_irq arch/x86/include/asm/apic.h:536 [inline] smp_apic_timer_interrupt+0x1cb/0x760 arch/x86/kernel/apic/apic.c:1061 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:807 RIP: 0010:write_comp_data+0x22/0x70 kernel/kcov.c:122 Code: 90 90 90 90 90 90 90 90 55 48 89 e5 65 4c 8b 04 25 40 ee 01 00 65 8b 05 4c 36 83 7e a9 00 01 1f 00 75 51 41 8b 80 d8 12 00 00 <83> f8 03 75 45 49 8b 80 e0 12 00 00 45 8b 80 dc 12 00 00 4c 8b 08 RSP: 0018:ffff88818aa9e978 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff13 RAX: 0000000000000000 RBX: 1ffff11031553d6b RCX: ffffffff81b1fbb3 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000005 RBP: ffff88818aa9e978 R08: ffff88818aa906c0 R09: ffffed10365f5042 R10: ffffed10365f5042 R11: ffff8881b2fa8213 R12: ffff8881b2fa8210 R13: 0000000000000000 R14: 0000000000000000 R15: dffffc0000000000 __sanitizer_cov_trace_const_cmp4+0x16/0x20 kernel/kcov.c:188 copy_pte_range mm/memory.c:848 [inline] copy_pmd_range mm/memory.c:906 [inline] copy_pud_range mm/memory.c:940 [inline] copy_p4d_range mm/memory.c:962 [inline] copy_page_range+0xce3/0x26b0 mm/memory.c:1024 dup_mmap kernel/fork.c:590 [inline] dup_mm kernel/fork.c:1323 [inline] copy_mm kernel/fork.c:1378 [inline] copy_process+0x45e9/0x8790 kernel/fork.c:1922 _do_fork+0x1cb/0x11d0 kernel/fork.c:2221 __do_sys_clone kernel/fork.c:2328 [inline] __se_sys_clone kernel/fork.c:2322 [inline] __x64_sys_clone+0xbf/0x150 kernel/fork.c:2322 do_syscall_64+0x1b9/0x820 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x455c1a Code: f7 d8 64 89 04 25 d4 02 00 00 64 4c 8b 0c 25 10 00 00 00 31 d2 4d 8d 91 d0 02 00 00 31 f6 bf 11 00 20 01 b8 38 00 00 00 0f 05 <48> 3d 00 f0 ff ff 0f 87 f5 00 00 00 85 c0 41 89 c5 0f 85 fc 00 00 RSP: 002b:00007ffeeab07250 EFLAGS: 00000246 ORIG_RAX: 0000000000000038 RAX: ffffffffffffffda RBX: 00007ffeeab07250 RCX: 0000000000455c1a RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000001200011 RBP: 00007ffeeab07290 R08: 0000000000000001 R09: 00000000028e2940 R10: 00000000028e2c10 R11: 0000000000000246 R12: 0000000000000001 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000004 BUG: sleeping function called from invalid context at mm/slab.h:421 kobject: 'holders' (000000003411411e): kobject_cleanup, parent 0000000048adf376 in_atomic(): 1, irqs_disabled(): 0, pid: 6173, name: syz-executor4 INFO: lockdep is turned off. Preemption disabled at: [] spin_lock include/linux/spinlock.h:329 [inline] [] copy_pte_range mm/memory.c:830 [inline] [] copy_pmd_range mm/memory.c:906 [inline] [] copy_pud_range mm/memory.c:940 [inline] [] copy_p4d_range mm/memory.c:962 [inline] [] copy_page_range+0xa48/0x26b0 mm/memory.c:1024 CPU: 1 PID: 6173 Comm: syz-executor4 Not tainted 4.20.0-rc7+ #162 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+0x1d3/0x2c6 lib/dump_stack.c:113 ___might_sleep.cold.85+0x1ba/0x1f3 kernel/sched/core.c:6148 __might_sleep+0x95/0x190 kernel/sched/core.c:6101 slab_pre_alloc_hook mm/slab.h:421 [inline] slab_alloc mm/slab.c:3378 [inline] kmem_cache_alloc_trace+0x2cd/0x750 mm/slab.c:3618 kobject: 'loop3' (0000000023a3b8ff): kobject_uevent_env kmalloc include/linux/slab.h:546 [inline] kzalloc include/linux/slab.h:741 [inline] kobject_uevent_env+0x2f3/0x101e lib/kobject_uevent.c:514 kobject: 'loop3' (0000000023a3b8ff): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject_uevent+0x1f/0x24 lib/kobject_uevent.c:636 kobject_cleanup lib/kobject.c:649 [inline] kobject_release lib/kobject.c:691 [inline] kref_put include/linux/kref.h:70 [inline] kobject_put.cold.9+0x170/0x2e4 lib/kobject.c:708 kobject: 'holders' (000000003411411e): auto cleanup kobject_del put_device+0x20/0x30 drivers/base/core.c:2024 delete_partition_rcu_cb+0x147/0x1b0 block/partition-generic.c:259 __rcu_reclaim kernel/rcu/rcu.h:240 [inline] rcu_do_batch kernel/rcu/tree.c:2437 [inline] invoke_rcu_callbacks kernel/rcu/tree.c:2716 [inline] rcu_process_callbacks+0x100a/0x1ac0 kernel/rcu/tree.c:2697 kobject: 'holders' (000000003411411e): calling ktype release kobject: (000000003411411e): dynamic_kobj_release kobject: 'holders': free name kobject: 'loop0p244' (0000000048adf376): kobject_uevent_env FAULT_INJECTION: forcing a failure. name fail_page_alloc, interval 1, probability 0, space 0, times 1 __do_softirq+0x30c/0xb2e kernel/softirq.c:292 invoke_softirq kernel/softirq.c:373 [inline] irq_exit+0x17f/0x1c0 kernel/softirq.c:413 exiting_irq arch/x86/include/asm/apic.h:536 [inline] smp_apic_timer_interrupt+0x1cb/0x760 arch/x86/kernel/apic/apic.c:1061 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:807 RIP: 0010:write_comp_data+0x22/0x70 kernel/kcov.c:122 Code: 90 90 90 90 90 90 90 90 55 48 89 e5 65 4c 8b 04 25 40 ee 01 00 65 8b 05 4c 36 83 7e a9 00 01 1f 00 75 51 41 8b 80 d8 12 00 00 <83> f8 03 75 45 49 8b 80 e0 12 00 00 45 8b 80 dc 12 00 00 4c 8b 08 RSP: 0018:ffff88818aa9e978 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff13 RAX: 0000000000000000 RBX: 1ffff11031553d6b RCX: ffffffff81b1fbb3 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000005 RBP: ffff88818aa9e978 R08: ffff88818aa906c0 R09: ffffed10365f5042 R10: ffffed10365f5042 R11: ffff8881b2fa8213 R12: ffff8881b2fa8210 R13: 0000000000000000 R14: 0000000000000000 R15: dffffc0000000000 __sanitizer_cov_trace_const_cmp4+0x16/0x20 kernel/kcov.c:188 copy_pte_range mm/memory.c:848 [inline] copy_pmd_range mm/memory.c:906 [inline] copy_pud_range mm/memory.c:940 [inline] copy_p4d_range mm/memory.c:962 [inline] copy_page_range+0xce3/0x26b0 mm/memory.c:1024 dup_mmap kernel/fork.c:590 [inline] dup_mm kernel/fork.c:1323 [inline] copy_mm kernel/fork.c:1378 [inline] copy_process+0x45e9/0x8790 kernel/fork.c:1922 _do_fork+0x1cb/0x11d0 kernel/fork.c:2221 __do_sys_clone kernel/fork.c:2328 [inline] __se_sys_clone kernel/fork.c:2322 [inline] __x64_sys_clone+0xbf/0x150 kernel/fork.c:2322 do_syscall_64+0x1b9/0x820 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x455c1a Code: f7 d8 64 89 04 25 d4 02 00 00 64 4c 8b 0c 25 10 00 00 00 31 d2 4d 8d 91 d0 02 00 00 31 f6 bf 11 00 20 01 b8 38 00 00 00 0f 05 <48> 3d 00 f0 ff ff 0f 87 f5 00 00 00 85 c0 41 89 c5 0f 85 fc 00 00 RSP: 002b:00007ffeeab07250 EFLAGS: 00000246 ORIG_RAX: 0000000000000038 RAX: ffffffffffffffda RBX: 00007ffeeab07250 RCX: 0000000000455c1a RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000001200011 RBP: 00007ffeeab07290 R08: 0000000000000001 R09: 00000000028e2940 R10: 00000000028e2c10 R11: 0000000000000246 R12: 0000000000000001 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000004 CPU: 0 PID: 15670 Comm: syz-executor0 Not tainted 4.20.0-rc7+ #162 BUG: sleeping function called from invalid context at mm/slab.c:3066 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 in_atomic(): 1, irqs_disabled(): 0, pid: 6173, name: syz-executor4 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x1d3/0x2c6 lib/dump_stack.c:113 INFO: lockdep is turned off. Preemption disabled at: [] spin_lock include/linux/spinlock.h:329 [inline] [] copy_pte_range mm/memory.c:830 [inline] [] copy_pmd_range mm/memory.c:906 [inline] [] copy_pud_range mm/memory.c:940 [inline] [] copy_p4d_range mm/memory.c:962 [inline] [] copy_page_range+0xa48/0x26b0 mm/memory.c:1024 fail_dump lib/fault-inject.c:51 [inline] should_fail.cold.4+0xa/0x17 lib/fault-inject.c:149 should_fail_alloc_page mm/page_alloc.c:3068 [inline] prepare_alloc_pages mm/page_alloc.c:4320 [inline] __alloc_pages_nodemask+0x366/0xea0 mm/page_alloc.c:4367 __alloc_pages include/linux/gfp.h:473 [inline] __alloc_pages_node include/linux/gfp.h:486 [inline] kmem_getpages mm/slab.c:1409 [inline] cache_grow_begin+0x91/0x8c0 mm/slab.c:2677 cache_alloc_refill mm/slab.c:3044 [inline] ____cache_alloc mm/slab.c:3127 [inline] __do_cache_alloc mm/slab.c:3349 [inline] slab_alloc mm/slab.c:3384 [inline] kmem_cache_alloc_trace+0x67e/0x750 mm/slab.c:3618 kmalloc include/linux/slab.h:546 [inline] kzalloc include/linux/slab.h:741 [inline] kobject_uevent_env+0x2f3/0x101e lib/kobject_uevent.c:514 kobject_uevent+0x1f/0x24 lib/kobject_uevent.c:636 device_del+0x6c9/0xb70 drivers/base/core.c:2091 delete_partition+0x233/0x2c0 block/partition-generic.c:288 blkpg_ioctl+0x3c5/0xc10 block/ioctl.c:93 blkdev_ioctl+0xca6/0x21b0 block/ioctl.c:577 block_ioctl+0xee/0x130 fs/block_dev.c:1883 vfs_ioctl fs/ioctl.c:46 [inline] file_ioctl fs/ioctl.c:509 [inline] do_vfs_ioctl+0x1de/0x1790 fs/ioctl.c:696 ksys_ioctl+0xa9/0xd0 fs/ioctl.c:713 __do_sys_ioctl fs/ioctl.c:720 [inline] __se_sys_ioctl fs/ioctl.c:718 [inline] __x64_sys_ioctl+0x73/0xb0 fs/ioctl.c:718 do_syscall_64+0x1b9/0x820 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x457669 Code: fd b3 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 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 0f 83 cb b3 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007fb48e17dc78 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007fb48e17dc90 RCX: 0000000000457669 RDX: 00000000200006c0 RSI: 0000000000001269 RDI: 0000000000000003 RBP: 000000000072bf00 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007fb48e17e6d4 R13: 00000000004beb9d R14: 00000000004cf838 R15: 0000000000000004 CPU: 1 PID: 6173 Comm: syz-executor4 Tainted: G W 4.20.0-rc7+ #162 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+0x1d3/0x2c6 lib/dump_stack.c:113 kobject: 'loop0p244' (0000000048adf376): fill_kobj_path: path = '/devices/virtual/block/loop0/loop0p244' ___might_sleep.cold.85+0x1ba/0x1f3 kernel/sched/core.c:6148 kobject: 'loop0' (00000000a9767230): kobject_uevent_env kobject: 'loop0' (00000000a9767230): fill_kobj_path: path = '/devices/virtual/block/loop0' __might_sleep+0x95/0x190 kernel/sched/core.c:6101 cache_alloc_debugcheck_before mm/slab.c:3066 [inline] slab_alloc mm/slab.c:3382 [inline] kmem_cache_alloc_trace+0x307/0x750 mm/slab.c:3618 kmalloc include/linux/slab.h:546 [inline] kzalloc include/linux/slab.h:741 [inline] kobject_uevent_env+0x2f3/0x101e lib/kobject_uevent.c:514 kobject_uevent+0x1f/0x24 lib/kobject_uevent.c:636 kobject_cleanup lib/kobject.c:649 [inline] kobject_release lib/kobject.c:691 [inline] kref_put include/linux/kref.h:70 [inline] kobject_put.cold.9+0x170/0x2e4 lib/kobject.c:708 put_device+0x20/0x30 drivers/base/core.c:2024 delete_partition_rcu_cb+0x147/0x1b0 block/partition-generic.c:259 __rcu_reclaim kernel/rcu/rcu.h:240 [inline] rcu_do_batch kernel/rcu/tree.c:2437 [inline] invoke_rcu_callbacks kernel/rcu/tree.c:2716 [inline] rcu_process_callbacks+0x100a/0x1ac0 kernel/rcu/tree.c:2697 __do_softirq+0x30c/0xb2e kernel/softirq.c:292 invoke_softirq kernel/softirq.c:373 [inline] irq_exit+0x17f/0x1c0 kernel/softirq.c:413 exiting_irq arch/x86/include/asm/apic.h:536 [inline] smp_apic_timer_interrupt+0x1cb/0x760 arch/x86/kernel/apic/apic.c:1061 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:807 RIP: 0010:write_comp_data+0x22/0x70 kernel/kcov.c:122 Code: 90 90 90 90 90 90 90 90 55 48 89 e5 65 4c 8b 04 25 40 ee 01 00 65 8b 05 4c 36 83 7e a9 00 01 1f 00 75 51 41 8b 80 d8 12 00 00 <83> f8 03 75 45 49 8b 80 e0 12 00 00 45 8b 80 dc 12 00 00 4c 8b 08 RSP: 0018:ffff88818aa9e978 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff13 RAX: 0000000000000000 RBX: 1ffff11031553d6b RCX: ffffffff81b1fbb3 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000005 RBP: ffff88818aa9e978 R08: ffff88818aa906c0 R09: ffffed10365f5042 R10: ffffed10365f5042 R11: ffff8881b2fa8213 R12: ffff8881b2fa8210 R13: 0000000000000000 R14: 0000000000000000 R15: dffffc0000000000 __sanitizer_cov_trace_const_cmp4+0x16/0x20 kernel/kcov.c:188 copy_pte_range mm/memory.c:848 [inline] copy_pmd_range mm/memory.c:906 [inline] copy_pud_range mm/memory.c:940 [inline] copy_p4d_range mm/memory.c:962 [inline] copy_page_range+0xce3/0x26b0 mm/memory.c:1024 dup_mmap kernel/fork.c:590 [inline] dup_mm kernel/fork.c:1323 [inline] copy_mm kernel/fork.c:1378 [inline] copy_process+0x45e9/0x8790 kernel/fork.c:1922 _do_fork+0x1cb/0x11d0 kernel/fork.c:2221 __do_sys_clone kernel/fork.c:2328 [inline] __se_sys_clone kernel/fork.c:2322 [inline] __x64_sys_clone+0xbf/0x150 kernel/fork.c:2322 do_syscall_64+0x1b9/0x820 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x455c1a Code: f7 d8 64 89 04 25 d4 02 00 00 64 4c 8b 0c 25 10 00 00 00 31 d2 4d 8d 91 d0 02 00 00 31 f6 bf 11 00 20 01 b8 38 00 00 00 0f 05 <48> 3d 00 f0 ff ff 0f 87 f5 00 00 00 85 c0 41 89 c5 0f 85 fc 00 00 RSP: 002b:00007ffeeab07250 EFLAGS: 00000246 ORIG_RAX: 0000000000000038 RAX: ffffffffffffffda RBX: 00007ffeeab07250 RCX: 0000000000455c1a RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000001200011 RBP: 00007ffeeab07290 R08: 0000000000000001 R09: 00000000028e2940 R10: 00000000028e2c10 R11: 0000000000000246 R12: 0000000000000001 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000004 BUG: sleeping function called from invalid context at mm/slab.h:421 in_atomic(): 1, irqs_disabled(): 0, pid: 6173, name: syz-executor4 INFO: lockdep is turned off. Preemption disabled at: [] spin_lock include/linux/spinlock.h:329 [inline] [] copy_pte_range mm/memory.c:830 [inline] [] copy_pmd_range mm/memory.c:906 [inline] [] copy_pud_range mm/memory.c:940 [inline] [] copy_p4d_range mm/memory.c:962 [inline] [] copy_page_range+0xa48/0x26b0 mm/memory.c:1024 CPU: 1 PID: 6173 Comm: syz-executor4 Tainted: G W 4.20.0-rc7+ #162 kobject: 'loop1' (00000000adfcd8ba): kobject_uevent_env 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+0x1d3/0x2c6 lib/dump_stack.c:113 kobject: 'loop1' (00000000adfcd8ba): fill_kobj_path: path = '/devices/virtual/block/loop1' ___might_sleep.cold.85+0x1ba/0x1f3 kernel/sched/core.c:6148 __might_sleep+0x95/0x190 kernel/sched/core.c:6101 slab_pre_alloc_hook mm/slab.h:421 [inline] slab_alloc mm/slab.c:3378 [inline] __do_kmalloc mm/slab.c:3720 [inline] __kmalloc+0x2d6/0x770 mm/slab.c:3731 kmalloc include/linux/slab.h:551 [inline] kzalloc include/linux/slab.h:741 [inline] kobject_get_path+0xc2/0x1b0 lib/kobject.c:171 kobject_uevent_env+0x314/0x101e lib/kobject_uevent.c:519 kobject_uevent+0x1f/0x24 lib/kobject_uevent.c:636 kobject_cleanup lib/kobject.c:649 [inline] kobject_release lib/kobject.c:691 [inline] kref_put include/linux/kref.h:70 [inline] kobject_put.cold.9+0x170/0x2e4 lib/kobject.c:708 put_device+0x20/0x30 drivers/base/core.c:2024 delete_partition_rcu_cb+0x147/0x1b0 block/partition-generic.c:259 __rcu_reclaim kernel/rcu/rcu.h:240 [inline] rcu_do_batch kernel/rcu/tree.c:2437 [inline] invoke_rcu_callbacks kernel/rcu/tree.c:2716 [inline] rcu_process_callbacks+0x100a/0x1ac0 kernel/rcu/tree.c:2697 __do_softirq+0x30c/0xb2e kernel/softirq.c:292 invoke_softirq kernel/softirq.c:373 [inline] irq_exit+0x17f/0x1c0 kernel/softirq.c:413 exiting_irq arch/x86/include/asm/apic.h:536 [inline] smp_apic_timer_interrupt+0x1cb/0x760 arch/x86/kernel/apic/apic.c:1061 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:807 RIP: 0010:write_comp_data+0x22/0x70 kernel/kcov.c:122 Code: 90 90 90 90 90 90 90 90 55 48 89 e5 65 4c 8b 04 25 40 ee 01 00 65 8b 05 4c 36 83 7e a9 00 01 1f 00 75 51 41 8b 80 d8 12 00 00 <83> f8 03 75 45 49 8b 80 e0 12 00 00 45 8b 80 dc 12 00 00 4c 8b 08 RSP: 0018:ffff88818aa9e978 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff13 RAX: 0000000000000000 RBX: 1ffff11031553d6b RCX: ffffffff81b1fbb3 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000005 RBP: ffff88818aa9e978 R08: ffff88818aa906c0 R09: ffffed10365f5042 R10: ffffed10365f5042 R11: ffff8881b2fa8213 R12: ffff8881b2fa8210 R13: 0000000000000000 R14: 0000000000000000 R15: dffffc0000000000 __sanitizer_cov_trace_const_cmp4+0x16/0x20 kernel/kcov.c:188 copy_pte_range mm/memory.c:848 [inline] copy_pmd_range mm/memory.c:906 [inline] copy_pud_range mm/memory.c:940 [inline] copy_p4d_range mm/memory.c:962 [inline] copy_page_range+0xce3/0x26b0 mm/memory.c:1024 dup_mmap kernel/fork.c:590 [inline] dup_mm kernel/fork.c:1323 [inline] copy_mm kernel/fork.c:1378 [inline] copy_process+0x45e9/0x8790 kernel/fork.c:1922 _do_fork+0x1cb/0x11d0 kernel/fork.c:2221 __do_sys_clone kernel/fork.c:2328 [inline] __se_sys_clone kernel/fork.c:2322 [inline] __x64_sys_clone+0xbf/0x150 kernel/fork.c:2322 do_syscall_64+0x1b9/0x820 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x455c1a Code: f7 d8 64 89 04 25 d4 02 00 00 64 4c 8b 0c 25 10 00 00 00 31 d2 4d 8d 91 d0 02 00 00 31 f6 bf 11 00 20 01 b8 38 00 00 00 0f 05 <48> 3d 00 f0 ff ff 0f 87 f5 00 00 00 85 c0 41 89 c5 0f 85 fc 00 00 RSP: 002b:00007ffeeab07250 EFLAGS: 00000246 ORIG_RAX: 0000000000000038 RAX: ffffffffffffffda RBX: 00007ffeeab07250 RCX: 0000000000455c1a RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000001200011 RBP: 00007ffeeab07290 R08: 0000000000000001 R09: 00000000028e2940 R10: 00000000028e2c10 R11: 0000000000000246 R12: 0000000000000001 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000004 BUG: sleeping function called from invalid context at mm/slab.c:3066 in_atomic(): 1, irqs_disabled(): 0, pid: 6173, name: syz-executor4 INFO: lockdep is turned off. Preemption disabled at: [] spin_lock include/linux/spinlock.h:329 [inline] [] copy_pte_range mm/memory.c:830 [inline] [] copy_pmd_range mm/memory.c:906 [inline] [] copy_pud_range mm/memory.c:940 [inline] [] copy_p4d_range mm/memory.c:962 [inline] [] copy_page_range+0xa48/0x26b0 mm/memory.c:1024 CPU: 1 PID: 6173 Comm: syz-executor4 Tainted: G W 4.20.0-rc7+ #162 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+0x1d3/0x2c6 lib/dump_stack.c:113 ___might_sleep.cold.85+0x1ba/0x1f3 kernel/sched/core.c:6148 __might_sleep+0x95/0x190 kernel/sched/core.c:6101 cache_alloc_debugcheck_before mm/slab.c:3066 [inline] slab_alloc mm/slab.c:3382 [inline] __do_kmalloc mm/slab.c:3720 [inline] __kmalloc+0x310/0x770 mm/slab.c:3731 kmalloc include/linux/slab.h:551 [inline] kzalloc include/linux/slab.h:741 [inline] kobject_get_path+0xc2/0x1b0 lib/kobject.c:171 kobject_uevent_env+0x314/0x101e lib/kobject_uevent.c:519 kobject_uevent+0x1f/0x24 lib/kobject_uevent.c:636 kobject_cleanup lib/kobject.c:649 [inline] kobject_release lib/kobject.c:691 [inline] kref_put include/linux/kref.h:70 [inline] kobject_put.cold.9+0x170/0x2e4 lib/kobject.c:708 put_device+0x20/0x30 drivers/base/core.c:2024 delete_partition_rcu_cb+0x147/0x1b0 block/partition-generic.c:259 __rcu_reclaim kernel/rcu/rcu.h:240 [inline] rcu_do_batch kernel/rcu/tree.c:2437 [inline] invoke_rcu_callbacks kernel/rcu/tree.c:2716 [inline] rcu_process_callbacks+0x100a/0x1ac0 kernel/rcu/tree.c:2697 __do_softirq+0x30c/0xb2e kernel/softirq.c:292 invoke_softirq kernel/softirq.c:373 [inline] irq_exit+0x17f/0x1c0 kernel/softirq.c:413 exiting_irq arch/x86/include/asm/apic.h:536 [inline] smp_apic_timer_interrupt+0x1cb/0x760 arch/x86/kernel/apic/apic.c:1061 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:807 RIP: 0010:write_comp_data+0x22/0x70 kernel/kcov.c:122 Code: 90 90 90 90 90 90 90 90 55 48 89 e5 65 4c 8b 04 25 40 ee 01 00 65 8b 05 4c 36 83 7e a9 00 01 1f 00 75 51 41 8b 80 d8 12 00 00 <83> f8 03 75 45 49 8b 80 e0 12 00 00 45 8b 80 dc 12 00 00 4c 8b 08 RSP: 0018:ffff88818aa9e978 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff13 RAX: 0000000000000000 RBX: 1ffff11031553d6b RCX: ffffffff81b1fbb3 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000005 RBP: ffff88818aa9e978 R08: ffff88818aa906c0 R09: ffffed10365f5042 R10: ffffed10365f5042 R11: ffff8881b2fa8213 R12: ffff8881b2fa8210 R13: 0000000000000000 R14: 0000000000000000 R15: dffffc0000000000 __sanitizer_cov_trace_const_cmp4+0x16/0x20 kernel/kcov.c:188 copy_pte_range mm/memory.c:848 [inline] copy_pmd_range mm/memory.c:906 [inline] copy_pud_range mm/memory.c:940 [inline] copy_p4d_range mm/memory.c:962 [inline] copy_page_range+0xce3/0x26b0 mm/memory.c:1024 dup_mmap kernel/fork.c:590 [inline] dup_mm kernel/fork.c:1323 [inline] copy_mm kernel/fork.c:1378 [inline] copy_process+0x45e9/0x8790 kernel/fork.c:1922 _do_fork+0x1cb/0x11d0 kernel/fork.c:2221 __do_sys_clone kernel/fork.c:2328 [inline] __se_sys_clone kernel/fork.c:2322 [inline] __x64_sys_clone+0xbf/0x150 kernel/fork.c:2322 do_syscall_64+0x1b9/0x820 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x455c1a Code: f7 d8 64 89 04 25 d4 02 00 00 64 4c 8b 0c 25 10 00 00 00 31 d2 4d 8d 91 d0 02 00 00 31 f6 bf 11 00 20 01 b8 38 00 00 00 0f 05 <48> 3d 00 f0 ff ff 0f 87 f5 00 00 00 85 c0 41 89 c5 0f 85 fc 00 00 RSP: 002b:00007ffeeab07250 EFLAGS: 00000246 ORIG_RAX: 0000000000000038 RAX: ffffffffffffffda RBX: 00007ffeeab07250 RCX: 0000000000455c1a RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000001200011 RBP: 00007ffeeab07290 R08: 0000000000000001 R09: 00000000028e2940 R10: 00000000028e2c10 R11: 0000000000000246 R12: 0000000000000001 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000004 kobject: 'loop0p250' (00000000919afe99): fill_kobj_path: path = '/loop0p250' BUG: sleeping function called from invalid context at kernel/locking/mutex.c:908 in_atomic(): 1, irqs_disabled(): 0, pid: 6173, name: syz-executor4 INFO: lockdep is turned off. Preemption disabled at: [] spin_lock include/linux/spinlock.h:329 [inline] [] copy_pte_range mm/memory.c:830 [inline] [] copy_pmd_range mm/memory.c:906 [inline] [] copy_pud_range mm/memory.c:940 [inline] [] copy_p4d_range mm/memory.c:962 [inline] [] copy_page_range+0xa48/0x26b0 mm/memory.c:1024 CPU: 1 PID: 6173 Comm: syz-executor4 Tainted: G W 4.20.0-rc7+ #162 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+0x1d3/0x2c6 lib/dump_stack.c:113 ___might_sleep.cold.85+0x1ba/0x1f3 kernel/sched/core.c:6148 __might_sleep+0x95/0x190 kernel/sched/core.c:6101 __mutex_lock_common kernel/locking/mutex.c:908 [inline] __mutex_lock+0x138/0x1700 kernel/locking/mutex.c:1072 kobject: 'loop2' (000000005b44aff6): kobject_uevent_env kobject: 'loop2' (000000005b44aff6): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'loop1' (00000000adfcd8ba): kobject_uevent_env kobject: 'loop1' (00000000adfcd8ba): fill_kobj_path: path = '/devices/virtual/block/loop1' mutex_lock_nested+0x16/0x20 kernel/locking/mutex.c:1087 kobject_uevent_env+0x7d7/0x101e lib/kobject_uevent.c:580 kobject_uevent+0x1f/0x24 lib/kobject_uevent.c:636 kobject_cleanup lib/kobject.c:649 [inline] kobject_release lib/kobject.c:691 [inline] kref_put include/linux/kref.h:70 [inline] kobject_put.cold.9+0x170/0x2e4 lib/kobject.c:708 put_device+0x20/0x30 drivers/base/core.c:2024 delete_partition_rcu_cb+0x147/0x1b0 block/partition-generic.c:259 __rcu_reclaim kernel/rcu/rcu.h:240 [inline] rcu_do_batch kernel/rcu/tree.c:2437 [inline] invoke_rcu_callbacks kernel/rcu/tree.c:2716 [inline] rcu_process_callbacks+0x100a/0x1ac0 kernel/rcu/tree.c:2697 ------------[ cut here ]------------ generic_make_request: Trying to write to read-only block-device loop0 (partno 0) WARNING: CPU: 0 PID: 11702 at block/blk-core.c:2170 bio_check_ro block/blk-core.c:2167 [inline] WARNING: CPU: 0 PID: 11702 at block/blk-core.c:2170 generic_make_request_checks+0xef9/0x26c0 block/blk-core.c:2272