R13: 00000000004be9e6 R14: 00000000004cee38 R15: 0000000000000004 ================================ WARNING: inconsistent lock state 4.20.0-rc5+ #362 Not tainted -------------------------------- inconsistent {SOFTIRQ-ON-W} -> {IN-SOFTIRQ-W} usage. kobject: 'holders' (000000009c648dd1): kobject_cleanup, parent 000000001d063b8c syz-executor0/14311 [HC0[0]:SC1[1]:HE1:SE0] takes: 000000006613eff3 (fs_reclaim){+.?.}, at: fs_reclaim_acquire.part.97+0x0/0x30 mm/internal.h:79 {SOFTIRQ-ON-W} state was registered at: kobject: 'holders' (000000009c648dd1): auto cleanup kobject_del lock_acquire+0x1ed/0x520 kernel/locking/lockdep.c:3844 __fs_reclaim_acquire mm/page_alloc.c:3730 [inline] fs_reclaim_acquire.part.97+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 init_rescuer.part.24+0x1f/0x190 kernel/workqueue.c:4028 kobject: 'holders' (000000009c648dd1): calling ktype release init_rescuer kernel/workqueue.c:4025 [inline] workqueue_init+0x491/0x744 kernel/workqueue.c:5794 kernel_init_freeable+0x3bb/0x6bf init/main.c:1139 kobject: (000000009c648dd1): dynamic_kobj_release kernel_init+0x11/0x1ae init/main.c:1071 ret_from_fork+0x3a/0x50 arch/x86/entry/entry_64.S:352 irq event stamp: 1218 hardirqs last enabled at (1218): [] console_unlock+0xcfb/0x1190 kernel/printk/printk.c:2443 hardirqs last disabled at (1217): [] console_unlock+0x2d9/0x1190 kernel/printk/printk.c:2353 kobject: 'holders': free name softirqs last enabled at (0): [] copy_process+0x22d4/0x87a0 kernel/fork.c:1860 softirqs last disabled at (1073): [] invoke_softirq kernel/softirq.c:373 [inline] softirqs last disabled at (1073): [] irq_exit+0x17f/0x1c0 kernel/softirq.c:413 kobject: 'loop7p245' (000000001d063b8c): kobject_uevent_env other info that might help us debug this: Possible unsafe locking scenario: CPU0 ---- lock(fs_reclaim); lock(fs_reclaim); *** DEADLOCK *** 2 locks held by syz-executor0/14311: #0: 00000000f0dc070e (&runtime->oss.params_lock){+.+.}, at: snd_pcm_oss_change_params+0xa9/0xe0 sound/core/oss/pcm_oss.c:1098 #1: 00000000800977ba (rcu_callback){....}, at: __rcu_reclaim kernel/rcu/rcu.h:228 [inline] #1: 00000000800977ba (rcu_callback){....}, at: rcu_do_batch kernel/rcu/tree.c:2437 [inline] #1: 00000000800977ba (rcu_callback){....}, at: invoke_rcu_callbacks kernel/rcu/tree.c:2716 [inline] #1: 00000000800977ba (rcu_callback){....}, at: rcu_process_callbacks+0x1103/0x1ac0 kernel/rcu/tree.c:2697 FAULT_INJECTION: forcing a failure. name failslab, interval 1, probability 0, space 0, times 0 stack backtrace: CPU: 1 PID: 14311 Comm: syz-executor0 Not tainted 4.20.0-rc5+ #362 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+0x244/0x39d lib/dump_stack.c:113 print_usage_bug.cold.59+0x320/0x41a kernel/locking/lockdep.c:2472 kobject: 'loop1' (00000000a5da7b40): kobject_uevent_env valid_state kernel/locking/lockdep.c:2485 [inline] mark_lock_irq kernel/locking/lockdep.c:2679 [inline] mark_lock+0x1276/0x1cd0 kernel/locking/lockdep.c:3059 kobject: 'loop1' (00000000a5da7b40): fill_kobj_path: path = '/devices/virtual/block/loop1' mark_irqflags kernel/locking/lockdep.c:2937 [inline] __lock_acquire+0x155f/0x4c20 kernel/locking/lockdep.c:3298 mmap: syz-executor1 (14322) uses deprecated remap_file_pages() syscall. See Documentation/vm/remap_file_pages.rst. lock_acquire+0x1ed/0x520 kernel/locking/lockdep.c:3844 __fs_reclaim_acquire mm/page_alloc.c:3730 [inline] fs_reclaim_acquire.part.97+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+0x308/0xb7e 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 FAULT_INJECTION: forcing a failure. name failslab, interval 1, probability 0, space 0, times 0 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:804 RIP: 0010:kasan_kmalloc+0x81/0xe0 mm/kasan/kasan.c:552 Code: 00 fc ff df 4d 29 fe 48 c1 e8 03 be fc 00 00 00 4a 8d 14 33 48 8d 3c 08 48 c1 ea 03 48 29 c2 e8 95 99 16 06 41 f6 44 24 23 08 <75> 1e 48 83 c4 10 5b 41 5c 41 5d 41 5e 41 5f 5d c3 48 89 55 c8 e8 RSP: 0018:ffff888183ebf250 EFLAGS: 00000202 ORIG_RAX: ffffffffffffff13 RAX: ffffed103ae3d3ac RBX: ffff8881d71e9d60 RCX: 0000000000000000 RDX: 0000000000000034 RSI: 00000000000000fc RDI: ffffed103ae3d3e0 RBP: ffff888183ebf288 R08: 0000000000000070 R09: ffffed103ae3d3ac R10: 0000000077fa42ee R11: ffff8881daf2dafb R12: ffff8881da800ac0 R13: ffff8881d71e9b00 R14: 00000000000001a0 R15: ffff8881d71e9d5f kmem_cache_alloc_trace+0x152/0x750 mm/slab.c:3620 kmalloc include/linux/slab.h:546 [inline] snd_pcm_hw_param_near.constprop.34+0x164/0xb30 sound/core/oss/pcm_oss.c:415 snd_pcm_oss_change_params_locked+0xc16/0x3c60 sound/core/oss/pcm_oss.c:891 snd_pcm_oss_change_params+0x80/0xe0 sound/core/oss/pcm_oss.c:1101 snd_pcm_oss_get_active_substream.part.27+0x136/0x190 sound/core/oss/pcm_oss.c:1118 snd_pcm_oss_get_active_substream sound/core/oss/pcm_oss.c:1111 [inline] snd_pcm_oss_get_channels sound/core/oss/pcm_oss.c:1805 [inline] snd_pcm_oss_set_channels+0x1fe/0x360 sound/core/oss/pcm_oss.c:1797 snd_pcm_oss_ioctl+0x2269/0x3ed0 sound/core/oss/pcm_oss.c:2643 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: 0033:0x457569 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:00007f3fd2c4ec78 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000457569 RDX: 0000000020000000 RSI: 00800000c0045006 RDI: 0000000000000006 RBP: 000000000072bf00 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007f3fd2c4f6d4 R13: 00000000004c21d0 R14: 00000000004d3758 R15: 00000000ffffffff CPU: 0 PID: 14318 Comm: syz-executor2 Not tainted 4.20.0-rc5+ #362 BUG: sleeping function called from invalid context at mm/slab.h:421 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+0x244/0x39d lib/dump_stack.c:113 in_atomic(): 1, irqs_disabled(): 0, pid: 14311, name: syz-executor0 fail_dump lib/fault-inject.c:51 [inline] should_fail.cold.4+0xa/0x17 lib/fault-inject.c:149 INFO: lockdep is turned off. Preemption disabled at: [] __do_softirq+0x189/0xb7e kernel/softirq.c:269 __should_failslab+0x124/0x180 mm/failslab.c:32 should_failslab+0x9/0x14 mm/slab_common.c:1578 slab_pre_alloc_hook mm/slab.h:423 [inline] slab_alloc mm/slab.c:3378 [inline] __do_kmalloc mm/slab.c:3720 [inline] __kmalloc+0x2e0/0x760 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 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+0x6b7/0x21b0 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: 0033:0x457569 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:00007fc156ac8c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007fc156ac8c90 RCX: 0000000000457569 RDX: 00000000200006c0 RSI: 0000000000001269 RDI: 0000000000000003 RBP: 000000000072bf00 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007fc156ac96d4 R13: 00000000004be9e6 R14: 00000000004cee38 R15: 0000000000000004 CPU: 1 PID: 14311 Comm: syz-executor0 Not tainted 4.20.0-rc5+ #362 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+0x244/0x39d lib/dump_stack.c:113 ___might_sleep.cold.86+0x221/0x254 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: 'loop5' (0000000043f66190): 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_uevent+0x1f/0x24 lib/kobject_uevent.c:636 kobject: 'loop5' (0000000043f66190): fill_kobj_path: path = '/devices/virtual/block/loop5' 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 kobject: 'loop5' (0000000043f66190): kobject_uevent_env kobject: 'loop5' (0000000043f66190): fill_kobj_path: path = '/devices/virtual/block/loop5' __do_softirq+0x308/0xb7e 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:804 RIP: 0010:kasan_kmalloc+0x81/0xe0 mm/kasan/kasan.c:552 Code: 00 fc ff df 4d 29 fe 48 c1 e8 03 be fc 00 00 00 4a 8d 14 33 48 8d 3c 08 48 c1 ea 03 48 29 c2 e8 95 99 16 06 41 f6 44 24 23 08 <75> 1e 48 83 c4 10 5b 41 5c 41 5d 41 5e 41 5f 5d c3 48 89 55 c8 e8 RSP: 0018:ffff888183ebf250 EFLAGS: 00000202 ORIG_RAX: ffffffffffffff13 RAX: ffffed103ae3d3ac RBX: ffff8881d71e9d60 RCX: 0000000000000000 RDX: 0000000000000034 RSI: 00000000000000fc RDI: ffffed103ae3d3e0 RBP: ffff888183ebf288 R08: 0000000000000070 R09: ffffed103ae3d3ac R10: 0000000077fa42ee R11: ffff8881daf2dafb R12: ffff8881da800ac0 R13: ffff8881d71e9b00 R14: 00000000000001a0 R15: ffff8881d71e9d5f kmem_cache_alloc_trace+0x152/0x750 mm/slab.c:3620 kmalloc include/linux/slab.h:546 [inline] snd_pcm_hw_param_near.constprop.34+0x164/0xb30 sound/core/oss/pcm_oss.c:415 snd_pcm_oss_change_params_locked+0xc16/0x3c60 sound/core/oss/pcm_oss.c:891 snd_pcm_oss_change_params+0x80/0xe0 sound/core/oss/pcm_oss.c:1101 snd_pcm_oss_get_active_substream.part.27+0x136/0x190 sound/core/oss/pcm_oss.c:1118 snd_pcm_oss_get_active_substream sound/core/oss/pcm_oss.c:1111 [inline] snd_pcm_oss_get_channels sound/core/oss/pcm_oss.c:1805 [inline] snd_pcm_oss_set_channels+0x1fe/0x360 sound/core/oss/pcm_oss.c:1797 snd_pcm_oss_ioctl+0x2269/0x3ed0 sound/core/oss/pcm_oss.c:2643 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: 0033:0x457569 kobject: 'holders' (00000000d703eadb): kobject_cleanup, parent 000000006ababbcf 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:00007f3fd2c4ec78 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000457569 RDX: 0000000020000000 RSI: 00800000c0045006 RDI: 0000000000000006 RBP: 000000000072bf00 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007f3fd2c4f6d4 R13: 00000000004c21d0 R14: 00000000004d3758 R15: 00000000ffffffff kobject: 'holders' (00000000d703eadb): auto cleanup kobject_del BUG: sleeping function called from invalid context at mm/slab.c:3066 in_atomic(): 1, irqs_disabled(): 0, pid: 14311, name: syz-executor0 INFO: lockdep is turned off. Preemption disabled at: [] __do_softirq+0x189/0xb7e kernel/softirq.c:269 CPU: 0 PID: 14309 Comm: syz-executor4 Tainted: G W 4.20.0-rc5+ #362 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+0x244/0x39d lib/dump_stack.c:113 fail_dump lib/fault-inject.c:51 [inline] should_fail.cold.4+0xa/0x17 lib/fault-inject.c:149 __should_failslab+0x124/0x180 mm/failslab.c:32 should_failslab+0x9/0x14 mm/slab_common.c:1578 slab_pre_alloc_hook mm/slab.h:423 [inline] slab_alloc mm/slab.c:3378 [inline] kmem_cache_alloc+0x2be/0x730 mm/slab.c:3552 kmem_cache_zalloc include/linux/slab.h:731 [inline] taskstats_tgid_alloc kernel/taskstats.c:573 [inline] taskstats_exit+0x7cd/0xed0 kernel/taskstats.c:606 do_exit+0x52b/0x26d0 kernel/exit.c:852 do_group_exit+0x177/0x440 kernel/exit.c:970 get_signal+0x8b0/0x1980 kernel/signal.c:2517 do_signal+0x9c/0x21c0 arch/x86/kernel/signal.c:816 exit_to_usermode_loop+0x2e5/0x380 arch/x86/entry/common.c:162 prepare_exit_to_usermode arch/x86/entry/common.c:197 [inline] syscall_return_slowpath arch/x86/entry/common.c:268 [inline] do_syscall_64+0x6be/0x820 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x457569 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:00007f794e974c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000000 RAX: fffffffffffffe00 RBX: 00007f794e974c90 RCX: 0000000000457569 RDX: 00000000000000bb RSI: 0000000020000040 RDI: 0000000000000003 RBP: 000000000072bf00 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007f794e9756d4 R13: 00000000004c292a R14: 00000000004d5c18 R15: 0000000000000006 CPU: 1 PID: 14311 Comm: syz-executor0 Tainted: G W 4.20.0-rc5+ #362 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+0x244/0x39d lib/dump_stack.c:113 kobject: 'holders' (00000000d703eadb): calling ktype release kobject: (00000000d703eadb): dynamic_kobj_release ___might_sleep.cold.86+0x221/0x254 kernel/sched/core.c:6148 kobject: 'loop5' (0000000043f66190): kobject_uevent_env __might_sleep+0x95/0x190 kernel/sched/core.c:6101 kobject: 'loop5' (0000000043f66190): fill_kobj_path: path = '/devices/virtual/block/loop5' 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 kobject: 'holders': free name 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 kobject: 'loop7p248' (000000006ababbcf): kobject_uevent_env __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: 'loop7p248' (000000006ababbcf): fill_kobj_path: path = '/devices/virtual/block/loop7/loop7p248' kobject: 'loop4' (00000000c68a4510): kobject_uevent_env kobject: 'loop4' (00000000c68a4510): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop2' (0000000059d2c777): kobject_uevent_env kobject: 'loop2' (0000000059d2c777): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'loop2' (0000000059d2c777): kobject_uevent_env kobject: 'loop2' (0000000059d2c777): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'loop2' (0000000059d2c777): kobject_uevent_env kobject: 'loop2' (0000000059d2c777): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'loop3' (00000000172871c7): kobject_uevent_env __do_softirq+0x308/0xb7e kernel/softirq.c:292 kobject: 'loop3' (00000000172871c7): fill_kobj_path: path = '/devices/virtual/block/loop3' 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:804 RIP: 0010:kasan_kmalloc+0x81/0xe0 mm/kasan/kasan.c:552 Code: 00 fc ff df 4d 29 fe 48 c1 e8 03 be fc 00 00 00 4a 8d 14 33 48 8d 3c 08 48 c1 ea 03 48 29 c2 e8 95 99 16 06 41 f6 44 24 23 08 <75> 1e 48 83 c4 10 5b 41 5c 41 5d 41 5e 41 5f 5d c3 48 89 55 c8 e8 RSP: 0018:ffff888183ebf250 EFLAGS: 00000202 ORIG_RAX: ffffffffffffff13 RAX: ffffed103ae3d3ac RBX: ffff8881d71e9d60 RCX: 0000000000000000 RDX: 0000000000000034 RSI: 00000000000000fc RDI: ffffed103ae3d3e0 RBP: ffff888183ebf288 R08: 0000000000000070 R09: ffffed103ae3d3ac R10: 0000000077fa42ee R11: ffff8881daf2dafb R12: ffff8881da800ac0 R13: ffff8881d71e9b00 R14: 00000000000001a0 R15: ffff8881d71e9d5f kmem_cache_alloc_trace+0x152/0x750 mm/slab.c:3620 kmalloc include/linux/slab.h:546 [inline] snd_pcm_hw_param_near.constprop.34+0x164/0xb30 sound/core/oss/pcm_oss.c:415 snd_pcm_oss_change_params_locked+0xc16/0x3c60 sound/core/oss/pcm_oss.c:891 snd_pcm_oss_change_params+0x80/0xe0 sound/core/oss/pcm_oss.c:1101 snd_pcm_oss_get_active_substream.part.27+0x136/0x190 sound/core/oss/pcm_oss.c:1118 snd_pcm_oss_get_active_substream sound/core/oss/pcm_oss.c:1111 [inline] snd_pcm_oss_get_channels sound/core/oss/pcm_oss.c:1805 [inline] snd_pcm_oss_set_channels+0x1fe/0x360 sound/core/oss/pcm_oss.c:1797 snd_pcm_oss_ioctl+0x2269/0x3ed0 sound/core/oss/pcm_oss.c:2643 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: 0033:0x457569 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:00007f3fd2c4ec78 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000457569 RDX: 0000000020000000 RSI: 00800000c0045006 RDI: 0000000000000006 RBP: 000000000072bf00 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007f3fd2c4f6d4 R13: 00000000004c21d0 R14: 00000000004d3758 R15: 00000000ffffffff BUG: sleeping function called from invalid context at mm/slab.h:421 in_atomic(): 1, irqs_disabled(): 0, pid: 14311, name: syz-executor0 INFO: lockdep is turned off. Preemption disabled at: [] __do_softirq+0x189/0xb7e kernel/softirq.c:269 CPU: 1 PID: 14311 Comm: syz-executor0 Tainted: G W 4.20.0-rc5+ #362 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+0x244/0x39d lib/dump_stack.c:113 ___might_sleep.cold.86+0x221/0x254 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+0x2d6/0x760 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 kobject: 'loop4' (00000000c68a4510): kobject_uevent_env __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: 'loop4' (00000000c68a4510): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop5' (0000000043f66190): kobject_uevent_env kobject: 'loop5' (0000000043f66190): fill_kobj_path: path = '/devices/virtual/block/loop5' __do_softirq+0x308/0xb7e 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:804 RIP: 0010:kasan_kmalloc+0x81/0xe0 mm/kasan/kasan.c:552 Code: 00 fc ff df 4d 29 fe 48 c1 e8 03 be fc 00 00 00 4a 8d 14 33 48 8d 3c 08 48 c1 ea 03 48 29 c2 e8 95 99 16 06 41 f6 44 24 23 08 <75> 1e 48 83 c4 10 5b 41 5c 41 5d 41 5e 41 5f 5d c3 48 89 55 c8 e8 RSP: 0018:ffff888183ebf250 EFLAGS: 00000202 ORIG_RAX: ffffffffffffff13 RAX: ffffed103ae3d3ac RBX: ffff8881d71e9d60 RCX: 0000000000000000 RDX: 0000000000000034 RSI: 00000000000000fc RDI: ffffed103ae3d3e0 RBP: ffff888183ebf288 R08: 0000000000000070 R09: ffffed103ae3d3ac R10: 0000000077fa42ee R11: ffff8881daf2dafb R12: ffff8881da800ac0 R13: ffff8881d71e9b00 R14: 00000000000001a0 R15: ffff8881d71e9d5f kmem_cache_alloc_trace+0x152/0x750 mm/slab.c:3620 kmalloc include/linux/slab.h:546 [inline] snd_pcm_hw_param_near.constprop.34+0x164/0xb30 sound/core/oss/pcm_oss.c:415 snd_pcm_oss_change_params_locked+0xc16/0x3c60 sound/core/oss/pcm_oss.c:891 snd_pcm_oss_change_params+0x80/0xe0 sound/core/oss/pcm_oss.c:1101 snd_pcm_oss_get_active_substream.part.27+0x136/0x190 sound/core/oss/pcm_oss.c:1118 snd_pcm_oss_get_active_substream sound/core/oss/pcm_oss.c:1111 [inline] snd_pcm_oss_get_channels sound/core/oss/pcm_oss.c:1805 [inline] snd_pcm_oss_set_channels+0x1fe/0x360 sound/core/oss/pcm_oss.c:1797 snd_pcm_oss_ioctl+0x2269/0x3ed0 sound/core/oss/pcm_oss.c:2643 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: 0033:0x457569 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:00007f3fd2c4ec78 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000457569 RDX: 0000000020000000 RSI: 00800000c0045006 RDI: 0000000000000006 RBP: 000000000072bf00 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007f3fd2c4f6d4 R13: 00000000004c21d0 R14: 00000000004d3758 R15: 00000000ffffffff kobject: 'loop7p246' (00000000ee12f9ed): fill_kobj_path: path = '/loop7p246' kobject: 'loop7p246' (00000000ee12f9ed): calling ktype release kobject: 'loop7p246': free name kobject: 'loop1' (00000000a5da7b40): kobject_uevent_env kobject: 'loop7p245' (000000001d063b8c): kobject_cleanup, parent (null) kobject: 'loop1' (00000000a5da7b40): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop7p245' (000000001d063b8c): auto cleanup 'remove' event kobject: 'loop7p245' (000000001d063b8c): kobject_uevent_env kobject: 'loop1' (00000000a5da7b40): kobject_uevent_env BUG: sleeping function called from invalid context at mm/slab.h:421 kobject: 'loop1' (00000000a5da7b40): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop7p237' (00000000d70b960c): kobject_add_internal: parent: 'loop7', set: 'devices' in_atomic(): 1, irqs_disabled(): 0, pid: 14311, name: syz-executor0 INFO: lockdep is turned off. kobject: 'loop7p237' (00000000d70b960c): kobject_uevent_env Preemption disabled at: [] __do_softirq+0x189/0xb7e kernel/softirq.c:269 kobject: 'loop7p237' (00000000d70b960c): kobject_uevent_env: uevent_suppress caused the event to drop! CPU: 0 PID: 14311 Comm: syz-executor0 Tainted: G W 4.20.0-rc5+ #362 kobject: 'holders' (0000000093a3ee10): kobject_add_internal: parent: 'loop7p237', set: '' 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+0x244/0x39d lib/dump_stack.c:113 kobject: 'loop7p237' (00000000d70b960c): kobject_uevent_env kobject: 'loop7p237' (00000000d70b960c): fill_kobj_path: path = '/devices/virtual/block/loop7/loop7p237' ___might_sleep.cold.86+0x221/0x254 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 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+0x308/0xb7e 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:804 RIP: 0010:arch_atomic_dec_and_test arch/x86/include/asm/atomic.h:125 [inline] RIP: 0010:atomic_dec_and_test include/asm-generic/atomic-instrumented.h:260 [inline] RIP: 0010:page_ref_dec_and_test include/linux/page_ref.h:139 [inline] RIP: 0010:put_page_testzero include/linux/mm.h:520 [inline] RIP: 0010:release_pages+0x48b/0x26a0 mm/swap.c:751 Code: 89 ee 42 c6 04 38 f8 e8 d3 05 db ff 45 85 ed 0f 84 76 0f 00 00 e8 b5 04 db ff be 04 00 00 00 48 89 df e8 08 4d 1e 00 f0 ff 0b <0f> 94 c3 31 ff 89 de e8 69 05 db ff 84 db 0f 84 01 05 00 00 e8 8c RSP: 0018:ffff888183ebe2b0 EFLAGS: 00000202 ORIG_RAX: ffffffffffffff13 RAX: fffff94000e1c407 RBX: ffffea00070e2034 RCX: ffffffff81a49718 RDX: 0000000000000001 RSI: 0000000000000004 RDI: ffffea00070e2034 RBP: ffff888183ebea68 R08: fffff94000e1c407 R09: fffff94000e1c406 R10: fffff94000e1c406 R11: ffffea00070e2037 R12: ffffea00070e2000 R13: 0000000000000005 R14: ffff888183ebea40 R15: dffffc0000000000 free_pages_and_swap_cache+0x475/0x6f0 mm/swap_state.c:295 tlb_flush_mmu_free+0xcf/0x170 mm/mmu_gather.c:74 zap_pte_range mm/memory.c:1158 [inline] zap_pmd_range mm/memory.c:1193 [inline] zap_pud_range mm/memory.c:1222 [inline] zap_p4d_range mm/memory.c:1243 [inline] unmap_page_range+0x2068/0x2930 mm/memory.c:1264 unmap_single_vma+0x19b/0x310 mm/memory.c:1309 unmap_vmas+0x125/0x200 mm/memory.c:1339 exit_mmap+0x2be/0x590 mm/mmap.c:3145 __mmput kernel/fork.c:1045 [inline] mmput+0x247/0x610 kernel/fork.c:1066 exit_mm kernel/exit.c:545 [inline] do_exit+0xe74/0x26d0 kernel/exit.c:854 do_group_exit+0x177/0x440 kernel/exit.c:970 get_signal+0x8b0/0x1980 kernel/signal.c:2517 do_signal+0x9c/0x21c0 arch/x86/kernel/signal.c:816 exit_to_usermode_loop+0x2e5/0x380 arch/x86/entry/common.c:162 prepare_exit_to_usermode arch/x86/entry/common.c:197 [inline] syscall_return_slowpath arch/x86/entry/common.c:268 [inline] do_syscall_64+0x6be/0x820 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x457569 Code: Bad RIP value. RSP: 002b:00007f3fd2c4ec78 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: 0000000000000000 RBX: 0000000000000003 RCX: 0000000000457569 RDX: 0000000020000000 RSI: 00800000c0045006 RDI: 0000000000000006 RBP: 000000000072bf00 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007f3fd2c4f6d4 R13: 00000000004c21d0 R14: 00000000004d3758 R15: 00000000ffffffff BUG: sleeping function called from invalid context at mm/slab.c:3066 in_atomic(): 1, irqs_disabled(): 0, pid: 14311, name: syz-executor0 INFO: lockdep is turned off. Preemption disabled at: [] __do_softirq+0x189/0xb7e kernel/softirq.c:269 CPU: 0 PID: 14311 Comm: syz-executor0 Tainted: G W 4.20.0-rc5+ #362 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+0x244/0x39d lib/dump_stack.c:113 ___might_sleep.cold.86+0x221/0x254 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] 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+0x308/0xb7e 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:804 RIP: 0010:arch_atomic_dec_and_test arch/x86/include/asm/atomic.h:125 [inline] RIP: 0010:atomic_dec_and_test include/asm-generic/atomic-instrumented.h:260 [inline] RIP: 0010:page_ref_dec_and_test include/linux/page_ref.h:139 [inline] RIP: 0010:put_page_testzero include/linux/mm.h:520 [inline] RIP: 0010:release_pages+0x48b/0x26a0 mm/swap.c:751 Code: 89 ee 42 c6 04 38 f8 e8 d3 05 db ff 45 85 ed 0f 84 76 0f 00 00 e8 b5 04 db ff be 04 00 00 00 48 89 df e8 08 4d 1e 00 f0 ff 0b <0f> 94 c3 31 ff 89 de e8 69 05 db ff 84 db 0f 84 01 05 00 00 e8 8c RSP: 0018:ffff888183ebe2b0 EFLAGS: 00000202 ORIG_RAX: ffffffffffffff13 RAX: fffff94000e1c407 RBX: ffffea00070e2034 RCX: ffffffff81a49718 RDX: 0000000000000001 RSI: 0000000000000004 RDI: ffffea00070e2034 RBP: ffff888183ebea68 R08: fffff94000e1c407 R09: fffff94000e1c406 R10: fffff94000e1c406 R11: ffffea00070e2037 R12: ffffea00070e2000 R13: 0000000000000005 R14: ffff888183ebea40 R15: dffffc0000000000 free_pages_and_swap_cache+0x475/0x6f0 mm/swap_state.c:295 tlb_flush_mmu_free+0xcf/0x170 mm/mmu_gather.c:74 zap_pte_range mm/memory.c:1158 [inline] zap_pmd_range mm/memory.c:1193 [inline] zap_pud_range mm/memory.c:1222 [inline] zap_p4d_range mm/memory.c:1243 [inline] unmap_page_range+0x2068/0x2930 mm/memory.c:1264 unmap_single_vma+0x19b/0x310 mm/memory.c:1309 unmap_vmas+0x125/0x200 mm/memory.c:1339 exit_mmap+0x2be/0x590 mm/mmap.c:3145 __mmput kernel/fork.c:1045 [inline] mmput+0x247/0x610 kernel/fork.c:1066 exit_mm kernel/exit.c:545 [inline] do_exit+0xe74/0x26d0 kernel/exit.c:854 do_group_exit+0x177/0x440 kernel/exit.c:970 get_signal+0x8b0/0x1980 kernel/signal.c:2517 do_signal+0x9c/0x21c0 arch/x86/kernel/signal.c:816 exit_to_usermode_loop+0x2e5/0x380 arch/x86/entry/common.c:162 prepare_exit_to_usermode arch/x86/entry/common.c:197 [inline] syscall_return_slowpath arch/x86/entry/common.c:268 [inline] do_syscall_64+0x6be/0x820 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x457569 Code: Bad RIP value. RSP: 002b:00007f3fd2c4ec78 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: 0000000000000000 RBX: 0000000000000003 RCX: 0000000000457569 RDX: 0000000020000000 RSI: 00800000c0045006 RDI: 0000000000000006 RBP: 000000000072bf00 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007f3fd2c4f6d4 R13: 00000000004c21d0 R14: 00000000004d3758 R15: 00000000ffffffff BUG: sleeping function called from invalid context at mm/slab.h:421 in_atomic(): 1, irqs_disabled(): 0, pid: 14311, name: syz-executor0 INFO: lockdep is turned off. Preemption disabled at: [] __do_softirq+0x189/0xb7e kernel/softirq.c:269 CPU: 0 PID: 14311 Comm: syz-executor0 Tainted: G W 4.20.0-rc5+ #362 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+0x244/0x39d lib/dump_stack.c:113 ___might_sleep.cold.86+0x221/0x254 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+0x2d6/0x760 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+0x308/0xb7e 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:804 RIP: 0010:arch_atomic_dec_and_test arch/x86/include/asm/atomic.h:125 [inline] RIP: 0010:atomic_dec_and_test include/asm-generic/atomic-instrumented.h:260 [inline] RIP: 0010:page_ref_dec_and_test include/linux/page_ref.h:139 [inline] RIP: 0010:put_page_testzero include/linux/mm.h:520 [inline] RIP: 0010:release_pages+0x48b/0x26a0 mm/swap.c:751 Code: 89 ee 42 c6 04 38 f8 e8 d3 05 db ff 45 85 ed 0f 84 76 0f 00 00 e8 b5 04 db ff be 04 00 00 00 48 89 df e8 08 4d 1e 00 f0 ff 0b <0f> 94 c3 31 ff 89 de e8 69 05 db ff 84 db 0f 84 01 05 00 00 e8 8c RSP: 0018:ffff888183ebe2b0 EFLAGS: 00000202 ORIG_RAX: ffffffffffffff13 RAX: fffff94000e1c407 RBX: ffffea00070e2034 RCX: ffffffff81a49718 RDX: 0000000000000001 RSI: 0000000000000004 RDI: ffffea00070e2034 RBP: ffff888183ebea68 R08: fffff94000e1c407 R09: fffff94000e1c406 R10: fffff94000e1c406 R11: ffffea00070e2037 R12: ffffea00070e2000 R13: 0000000000000005 R14: ffff888183ebea40 R15: dffffc0000000000 free_pages_and_swap_cache+0x475/0x6f0 mm/swap_state.c:295 tlb_flush_mmu_free+0xcf/0x170 mm/mmu_gather.c:74 zap_pte_range mm/memory.c:1158 [inline] zap_pmd_range mm/memory.c:1193 [inline] zap_pud_range mm/memory.c:1222 [inline] zap_p4d_range mm/memory.c:1243 [inline] unmap_page_range+0x2068/0x2930 mm/memory.c:1264 unmap_single_vma+0x19b/0x310 mm/memory.c:1309 unmap_vmas+0x125/0x200 mm/memory.c:1339 exit_mmap+0x2be/0x590 mm/mmap.c:3145 __mmput kernel/fork.c:1045 [inline] mmput+0x247/0x610 kernel/fork.c:1066 exit_mm kernel/exit.c:545 [inline] do_exit+0xe74/0x26d0 kernel/exit.c:854 do_group_exit+0x177/0x440 kernel/exit.c:970 get_signal+0x8b0/0x1980 kernel/signal.c:2517 do_signal+0x9c/0x21c0 arch/x86/kernel/signal.c:816 exit_to_usermode_loop+0x2e5/0x380 arch/x86/entry/common.c:162 prepare_exit_to_usermode arch/x86/entry/common.c:197 [inline] syscall_return_slowpath arch/x86/entry/common.c:268 [inline] do_syscall_64+0x6be/0x820 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x457569 Code: Bad RIP value. RSP: 002b:00007f3fd2c4ec78 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: 0000000000000000 RBX: 0000000000000003 RCX: 0000000000457569 RDX: 0000000020000000 RSI: 00800000c0045006 RDI: 0000000000000006 RBP: 000000000072bf00 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007f3fd2c4f6d4 R13: 00000000004c21d0 R14: 00000000004d3758 R15: 00000000ffffffff BUG: sleeping function called from invalid context at mm/slab.c:3066 in_atomic(): 1, irqs_disabled(): 0, pid: 14311, name: syz-executor0 INFO: lockdep is turned off. Preemption disabled at: [] __do_softirq+0x189/0xb7e kernel/softirq.c:269 CPU: 0 PID: 14311 Comm: syz-executor0 Tainted: G W 4.20.0-rc5+ #362 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+0x244/0x39d lib/dump_stack.c:113 ___might_sleep.cold.86+0x221/0x254 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+0x310/0x760 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+0x308/0xb7e 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:804 RIP: 0010:arch_atomic_dec_and_test arch/x86/include/asm/atomic.h:125 [inline] RIP: 0010:atomic_dec_and_test include/asm-generic/atomic-instrumented.h:260 [inline] RIP: 0010:page_ref_dec_and_test include/linux/page_ref.h:139 [inline] RIP: 0010:put_page_testzero include/linux/mm.h:520 [inline] RIP: 0010:release_pages+0x48b/0x26a0 mm/swap.c:751 Code: 89 ee 42 c6 04 38 f8 e8 d3 05 db ff 45 85 ed 0f 84 76 0f 00 00 e8 b5 04 db ff be 04 00 00 00 48 89 df e8 08 4d 1e 00 f0 ff 0b <0f> 94 c3 31 ff 89 de e8 69 05 db ff 84 db 0f 84 01 05 00 00 e8 8c RSP: 0018:ffff888183ebe2b0 EFLAGS: 00000202 ORIG_RAX: ffffffffffffff13 RAX: fffff94000e1c407 RBX: ffffea00070e2034 RCX: ffffffff81a49718 RDX: 0000000000000001 RSI: 0000000000000004 RDI: ffffea00070e2034 RBP: ffff888183ebea68 R08: fffff94000e1c407 R09: fffff94000e1c406 R10: fffff94000e1c406 R11: ffffea00070e2037 R12: ffffea00070e2000 R13: 0000000000000005 R14: ffff888183ebea40 R15: dffffc0000000000 free_pages_and_swap_cache+0x475/0x6f0 mm/swap_state.c:295 tlb_flush_mmu_free+0xcf/0x170 mm/mmu_gather.c:74 zap_pte_range mm/memory.c:1158 [inline] zap_pmd_range mm/memory.c:1193 [inline] zap_pud_range mm/memory.c:1222 [inline] zap_p4d_range mm/memory.c:1243 [inline] unmap_page_range+0x2068/0x2930 mm/memory.c:1264 unmap_single_vma+0x19b/0x310 mm/memory.c:1309 unmap_vmas+0x125/0x200 mm/memory.c:1339 exit_mmap+0x2be/0x590 mm/mmap.c:3145 __mmput kernel/fork.c:1045 [inline] mmput+0x247/0x610 kernel/fork.c:1066 exit_mm kernel/exit.c:545 [inline] do_exit+0xe74/0x26d0 kernel/exit.c:854