ffff8801ca361f00: fb fb fb fb fb fb fb fb fb fb fb fb fc fc fc fc ffff8801ca361f80: fb fb fb fb fb fb fb fb fb fb fb fb fc fc fc fc BUG: KASAN: slab-out-of-bounds in __read_once_size include/linux/compiler.h:243 [inline] at addr ffff8801ca361ee4 BUG: KASAN: slab-out-of-bounds in atomic_read arch/x86/include/asm/atomic.h:26 [inline] at addr ffff8801ca361ee4 BUG: KASAN: slab-out-of-bounds in virt_spin_lock arch/x86/include/asm/qspinlock.h:56 [inline] at addr ffff8801ca361ee4 BUG: KASAN: slab-out-of-bounds in native_queued_spin_lock_slowpath+0x6a1/0x6c0 kernel/locking/qspinlock.c:421 at addr ffff8801ca361ee4 >ffff8801ca361e80: 00 00 00 00 00 00 00 00 00 00 00 00 fc fc fc fc ioctl_fioasync fs/ioctl.c:534 [inline] do_vfs_ioctl+0x2d8/0x1140 fs/ioctl.c:639 Read of size 4 by task syz-executor0/10501 slab_free_hook mm/slub.c:1355 [inline] slab_free_freelist_hook mm/slub.c:1377 [inline] slab_free mm/slub.c:2958 [inline] kmem_cache_free+0xb2/0x2e0 mm/slub.c:2980 [] SYSC_readv fs/read_write.c:1011 [inline] [] SyS_readv+0x27/0x30 fs/read_write.c:1008 ffffffff8153a2cc ffffed003946c3dc ffff8801d77ff780 0000000000000000 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [] queued_write_lock include/asm-generic/qrwlock.h:134 [inline] [] do_raw_write_lock+0xc7/0x1d0 kernel/locking/spinlock_debug.c:203 Allocated: [] __dump_stack lib/dump_stack.c:15 [inline] [] dump_stack+0xc1/0x128 lib/dump_stack.c:51 BUG: KASAN: slab-out-of-bounds in __read_once_size include/linux/compiler.h:243 [inline] at addr ffff8801ca361ee4 BUG: KASAN: slab-out-of-bounds in atomic_read arch/x86/include/asm/atomic.h:26 [inline] at addr ffff8801ca361ee4 BUG: KASAN: slab-out-of-bounds in virt_spin_lock arch/x86/include/asm/qspinlock.h:56 [inline] at addr ffff8801ca361ee4 BUG: KASAN: slab-out-of-bounds in native_queued_spin_lock_slowpath+0x6a1/0x6c0 kernel/locking/qspinlock.c:421 at addr ffff8801ca361ee4 ffff8801ca361f00: fb fb fb fb fb fb fb fb fb fb fb fb fc fc fc fc [] SYSC_readv fs/read_write.c:1011 [inline] [] SyS_readv+0x27/0x30 fs/read_write.c:1008 [] queued_write_lock include/asm-generic/qrwlock.h:134 [inline] [] do_raw_write_lock+0xc7/0x1d0 kernel/locking/spinlock_debug.c:203 Allocated: [] __raw_write_lock_irqsave include/linux/rwlock_api_smp.h:187 [inline] [] _raw_write_lock_irqsave+0x56/0x62 kernel/locking/spinlock.c:303 [] vfs_readv+0x84/0xc0 fs/read_write.c:898 Read of size 4 by task syz-executor0/10501 slab_post_alloc_hook mm/slab.h:417 [inline] slab_alloc_node mm/slub.c:2715 [inline] slab_alloc mm/slub.c:2723 [inline] kmem_cache_alloc+0xba/0x290 mm/slub.c:2728 Allocated: Read of size 4 by task syz-executor0/10501 PID = 10501 [] __raw_write_lock_irqsave include/linux/rwlock_api_smp.h:187 [inline] [] _raw_write_lock_irqsave+0x56/0x62 kernel/locking/spinlock.c:303 [] __read_once_size include/linux/compiler.h:243 [inline] [] atomic_read arch/x86/include/asm/atomic.h:26 [inline] [] virt_spin_lock arch/x86/include/asm/qspinlock.h:56 [inline] [] native_queued_spin_lock_slowpath+0x6a1/0x6c0 kernel/locking/qspinlock.c:421 [] do_loop_readv_writev.part.17+0x141/0x1e0 fs/read_write.c:714 [] kasan_object_err+0x1c/0x70 mm/kasan/report.c:160 [] sg_remove_request+0x70/0x120 drivers/scsi/sg.c:2122 ^ [] do_loop_readv_writev fs/read_write.c:880 [inline] [] do_readv_writev+0x520/0x750 fs/read_write.c:874 ffff8801ca361f80: fb fb fb fb fb fb fb fb fb fb fb fb fc fc fc fc PID = 10501 [] do_loop_readv_writev fs/read_write.c:880 [inline] [] do_readv_writev+0x520/0x750 fs/read_write.c:874 [] do_loop_readv_writev.part.17+0x141/0x1e0 fs/read_write.c:714 ffff8801ca361ee0 ffffed003946c3dc ffff8801ca361ee4 ffff8801c9d6f8d8 [] kasan_report mm/kasan/report.c:329 [inline] [] __asan_report_load4_noabort+0x29/0x30 mm/kasan/report.c:329 >ffff8801ca361e80: 00 00 00 00 00 00 00 00 00 00 00 00 fc fc fc fc [] do_readv+0xe6/0x250 fs/read_write.c:924 [] pv_queued_spin_lock_slowpath arch/x86/include/asm/paravirt.h:663 [inline] [] queued_spin_lock_slowpath arch/x86/include/asm/qspinlock.h:28 [inline] [] queued_spin_lock include/asm-generic/qspinlock.h:103 [inline] [] queued_write_lock_slowpath+0x116/0x150 kernel/locking/qrwlock.c:115 save_stack+0x43/0xd0 mm/kasan/kasan.c:495 [] do_loop_readv_writev fs/read_write.c:880 [inline] [] do_readv_writev+0x520/0x750 fs/read_write.c:874 Allocated: [] kasan_report mm/kasan/report.c:329 [inline] [] __asan_report_load4_noabort+0x29/0x30 mm/kasan/report.c:329 [] queued_write_lock include/asm-generic/qrwlock.h:134 [inline] [] do_raw_write_lock+0xc7/0x1d0 kernel/locking/spinlock_debug.c:203 save_stack+0x43/0xd0 mm/kasan/kasan.c:495 [] do_loop_readv_writev fs/read_write.c:880 [inline] [] do_readv_writev+0x520/0x750 fs/read_write.c:874 ioctl_fioasync fs/ioctl.c:534 [inline] do_vfs_ioctl+0x2d8/0x1140 fs/ioctl.c:639 Call Trace: ^ [] sg_remove_request+0x70/0x120 drivers/scsi/sg.c:2122 Freed: ^ BUG: KASAN: slab-out-of-bounds in __read_once_size include/linux/compiler.h:243 [inline] at addr ffff8801ca361ee4 BUG: KASAN: slab-out-of-bounds in atomic_read arch/x86/include/asm/atomic.h:26 [inline] at addr ffff8801ca361ee4 BUG: KASAN: slab-out-of-bounds in virt_spin_lock arch/x86/include/asm/qspinlock.h:56 [inline] at addr ffff8801ca361ee4 BUG: KASAN: slab-out-of-bounds in native_queued_spin_lock_slowpath+0x6a1/0x6c0 kernel/locking/qspinlock.c:421 at addr ffff8801ca361ee4 ================================================================== set_track mm/kasan/kasan.c:507 [inline] kasan_kmalloc+0xad/0xe0 mm/kasan/kasan.c:598 ================================================================== save_stack+0x43/0xd0 mm/kasan/kasan.c:495 ffff8801ca361e00: fb fb fb fb fb fb fb fb fb fb fb fb fc fc fc fc Object at ffff8801ca361e80, in cache fasync_cache size: 96 Allocated: ================================================================== [] queued_write_lock include/asm-generic/qrwlock.h:134 [inline] [] do_raw_write_lock+0xc7/0x1d0 kernel/locking/spinlock_debug.c:203 save_stack_trace+0x16/0x20 arch/x86/kernel/stacktrace.c:57 [] SYSC_readv fs/read_write.c:1011 [inline] [] SyS_readv+0x27/0x30 fs/read_write.c:1008 [] __raw_write_lock_irqsave include/linux/rwlock_api_smp.h:187 [inline] [] _raw_write_lock_irqsave+0x56/0x62 kernel/locking/spinlock.c:303 Object at ffff8801ca361e80, in cache fasync_cache size: 96 Allocated: ================================================================== ffff8801ca361e00: fb fb fb fb fb fb fb fb fb fb fb fb fc fc fc fc [] do_readv+0xe6/0x250 fs/read_write.c:924 [] vfs_readv+0x84/0xc0 fs/read_write.c:898 ffff8801c9d6f8b0 ffffffff81d906e9 ffff8801d77ff780 ffff8801ca361e80 [] kasan_report mm/kasan/report.c:329 [inline] [] __asan_report_load4_noabort+0x29/0x30 mm/kasan/report.c:329 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: Freed: set_track mm/kasan/kasan.c:507 [inline] kasan_slab_free+0x73/0xc0 mm/kasan/kasan.c:571 Object at ffff8801ca361e80, in cache fasync_cache size: 96 fasync_alloc fs/fcntl.c:604 [inline] fasync_add_entry fs/fcntl.c:662 [inline] fasync_helper+0x37/0xb0 fs/fcntl.c:691 Read of size 4 by task syz-executor0/10501 ffff8801ca361f80: fb fb fb fb fb fb fb fb fb fb fb fb fc fc fc fc [] entry_SYSCALL_64_fastpath+0x23/0xc6 ffff8801ca361e00: fb fb fb fb fb fb fb fb fb fb fb fb fc fc fc fc BUG: KASAN: slab-out-of-bounds in __read_once_size include/linux/compiler.h:243 [inline] at addr ffff8801ca361ee4 BUG: KASAN: slab-out-of-bounds in atomic_read arch/x86/include/asm/atomic.h:26 [inline] at addr ffff8801ca361ee4 BUG: KASAN: slab-out-of-bounds in virt_spin_lock arch/x86/include/asm/qspinlock.h:56 [inline] at addr ffff8801ca361ee4 BUG: KASAN: slab-out-of-bounds in native_queued_spin_lock_slowpath+0x6a1/0x6c0 kernel/locking/qspinlock.c:421 at addr ffff8801ca361ee4 ffff8801ca361d80: fb fb fb fb fb fb fb fb fb fb fb fb fc fc fc fc [] queued_write_lock include/asm-generic/qrwlock.h:134 [inline] [] do_raw_write_lock+0xc7/0x1d0 kernel/locking/spinlock_debug.c:203 set_track mm/kasan/kasan.c:507 [inline] kasan_kmalloc+0xad/0xe0 mm/kasan/kasan.c:598 BUG: KASAN: slab-out-of-bounds in __read_once_size include/linux/compiler.h:243 [inline] at addr ffff8801ca361ee4 BUG: KASAN: slab-out-of-bounds in atomic_read arch/x86/include/asm/atomic.h:26 [inline] at addr ffff8801ca361ee4 BUG: KASAN: slab-out-of-bounds in virt_spin_lock arch/x86/include/asm/qspinlock.h:56 [inline] at addr ffff8801ca361ee4 BUG: KASAN: slab-out-of-bounds in native_queued_spin_lock_slowpath+0x6a1/0x6c0 kernel/locking/qspinlock.c:421 at addr ffff8801ca361ee4 ================================================================== Object at ffff8801ca361e80, in cache fasync_cache size: 96 save_stack+0x43/0xd0 mm/kasan/kasan.c:495 entry_SYSCALL_64_fastpath+0x23/0xc6 [] print_address_description mm/kasan/report.c:198 [inline] [] kasan_report_error mm/kasan/report.c:287 [inline] [] kasan_report.part.1+0x21c/0x500 mm/kasan/report.c:309 ffff8801ca361e00: fb fb fb fb fb fb fb fb fb fb fb fb fc fc fc fc [] SYSC_readv fs/read_write.c:1011 [inline] [] SyS_readv+0x27/0x30 fs/read_write.c:1008 [] __raw_write_lock_irqsave include/linux/rwlock_api_smp.h:187 [inline] [] _raw_write_lock_irqsave+0x56/0x62 kernel/locking/spinlock.c:303 kasan_slab_alloc+0x12/0x20 mm/kasan/kasan.c:537 Object at ffff8801ca361e80, in cache fasync_cache size: 96 PID = 10501 ffff8801ca361ee0 ffffed003946c3dc ffff8801ca361ee4 ffff8801c9d6f8d8 [] __read_once_size include/linux/compiler.h:243 [inline] [] atomic_read arch/x86/include/asm/atomic.h:26 [inline] [] virt_spin_lock arch/x86/include/asm/qspinlock.h:56 [inline] [] native_queued_spin_lock_slowpath+0x6a1/0x6c0 kernel/locking/qspinlock.c:421 slab_free_hook mm/slub.c:1355 [inline] slab_free_freelist_hook mm/slub.c:1377 [inline] slab_free mm/slub.c:2958 [inline] kmem_cache_free+0xb2/0x2e0 mm/slub.c:2980 ioctl_fioasync fs/ioctl.c:534 [inline] do_vfs_ioctl+0x2d8/0x1140 fs/ioctl.c:639 [] do_loop_readv_writev fs/read_write.c:880 [inline] [] do_readv_writev+0x520/0x750 fs/read_write.c:874 Allocated: ^ ffff8801ca361f80: fb fb fb fb fb fb fb fb fb fb fb fb fc fc fc fc Allocated: [] __raw_write_lock_irqsave include/linux/rwlock_api_smp.h:187 [inline] [] _raw_write_lock_irqsave+0x56/0x62 kernel/locking/spinlock.c:303 [] vfs_readv+0x84/0xc0 fs/read_write.c:898 Read of size 4 by task syz-executor0/10501 ^ [] do_readv+0xe6/0x250 fs/read_write.c:924 [] kasan_report mm/kasan/report.c:329 [inline] [] __asan_report_load4_noabort+0x29/0x30 mm/kasan/report.c:329 [] do_loop_readv_writev fs/read_write.c:880 [inline] [] do_readv_writev+0x520/0x750 fs/read_write.c:874 ffff8801ca361f00: fb fb fb fb fb fb fb fb fb fb fb fb fc fc fc fc [] entry_SYSCALL_64_fastpath+0x23/0xc6 [] do_loop_readv_writev.part.17+0x141/0x1e0 fs/read_write.c:714 [] pv_queued_spin_lock_slowpath arch/x86/include/asm/paravirt.h:663 [inline] [] queued_spin_lock_slowpath arch/x86/include/asm/qspinlock.h:28 [inline] [] queued_spin_lock include/asm-generic/qspinlock.h:103 [inline] [] queued_write_lock_slowpath+0x116/0x150 kernel/locking/qrwlock.c:115 kasan_slab_alloc+0x12/0x20 mm/kasan/kasan.c:537 [] do_readv+0xe6/0x250 fs/read_write.c:924 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [] kasan_report mm/kasan/report.c:329 [inline] [] __asan_report_load4_noabort+0x29/0x30 mm/kasan/report.c:329 [] __read_once_size include/linux/compiler.h:243 [inline] [] atomic_read arch/x86/include/asm/atomic.h:26 [inline] [] virt_spin_lock arch/x86/include/asm/qspinlock.h:56 [inline] [] native_queued_spin_lock_slowpath+0x6a1/0x6c0 kernel/locking/qspinlock.c:421 slab_free_hook mm/slub.c:1355 [inline] slab_free_freelist_hook mm/slub.c:1377 [inline] slab_free mm/slub.c:2958 [inline] kmem_cache_free+0xb2/0x2e0 mm/slub.c:2980 ffff8801ca361f80: fb fb fb fb fb fb fb fb fb fb fb fb fc fc fc fc [] SYSC_readv fs/read_write.c:1011 [inline] [] SyS_readv+0x27/0x30 fs/read_write.c:1008 [] do_loop_readv_writev fs/read_write.c:880 [inline] [] do_readv_writev+0x520/0x750 fs/read_write.c:874 slab_post_alloc_hook mm/slab.h:417 [inline] slab_alloc_node mm/slub.c:2715 [inline] slab_alloc mm/slub.c:2723 [inline] kmem_cache_alloc+0xba/0x290 mm/slub.c:2728 slab_free_hook mm/slub.c:1355 [inline] slab_free_freelist_hook mm/slub.c:1377 [inline] slab_free mm/slub.c:2958 [inline] kmem_cache_free+0xb2/0x2e0 mm/slub.c:2980 Freed: [] do_loop_readv_writev fs/read_write.c:880 [inline] [] do_readv_writev+0x520/0x750 fs/read_write.c:874 Object at ffff8801ca361e80, in cache fasync_cache size: 96 [] SYSC_readv fs/read_write.c:1011 [inline] [] SyS_readv+0x27/0x30 fs/read_write.c:1008 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [] sg_remove_request+0x70/0x120 drivers/scsi/sg.c:2122 kasan_slab_alloc+0x12/0x20 mm/kasan/kasan.c:537 [] SYSC_readv fs/read_write.c:1011 [inline] [] SyS_readv+0x27/0x30 fs/read_write.c:1008 Read of size 4 by task syz-executor0/10501 ffff8801ca361f80: fb fb fb fb fb fb fb fb fb fb fb fb fc fc fc fc Allocated: [] __read_once_size include/linux/compiler.h:243 [inline] [] atomic_read arch/x86/include/asm/atomic.h:26 [inline] [] virt_spin_lock arch/x86/include/asm/qspinlock.h:56 [inline] [] native_queued_spin_lock_slowpath+0x6a1/0x6c0 kernel/locking/qspinlock.c:421 Object at ffff8801ca361e80, in cache fasync_cache size: 96 slab_post_alloc_hook mm/slab.h:417 [inline] slab_alloc_node mm/slub.c:2715 [inline] slab_alloc mm/slub.c:2723 [inline] kmem_cache_alloc+0xba/0x290 mm/slub.c:2728 ioctl_fioasync fs/ioctl.c:534 [inline] do_vfs_ioctl+0x2d8/0x1140 fs/ioctl.c:639 Call Trace: slab_free_hook mm/slub.c:1355 [inline] slab_free_freelist_hook mm/slub.c:1377 [inline] slab_free mm/slub.c:2958 [inline] kmem_cache_free+0xb2/0x2e0 mm/slub.c:2980 slab_post_alloc_hook mm/slab.h:417 [inline] slab_alloc_node mm/slub.c:2715 [inline] slab_alloc mm/slub.c:2723 [inline] kmem_cache_alloc+0xba/0x290 mm/slub.c:2728 SYSC_ioctl fs/ioctl.c:694 [inline] SyS_ioctl+0x8f/0xc0 fs/ioctl.c:685 [] sg_finish_rem_req+0x295/0x340 drivers/scsi/sg.c:1838 ffff8801ca361f00: fb fb fb fb fb fb fb fb fb fb fb fb fc fc fc fc Memory state around the buggy address: ffff8801ca361f80: fb fb fb fb fb fb fb fb fb fb fb fb fc fc fc fc [] pv_queued_spin_lock_slowpath arch/x86/include/asm/paravirt.h:663 [inline] [] queued_spin_lock_slowpath arch/x86/include/asm/qspinlock.h:28 [inline] [] queued_spin_lock include/asm-generic/qspinlock.h:103 [inline] [] queued_write_lock_slowpath+0x116/0x150 kernel/locking/qrwlock.c:115 set_track mm/kasan/kasan.c:507 [inline] kasan_kmalloc+0xad/0xe0 mm/kasan/kasan.c:598 ffff8801ca361f80: fb fb fb fb fb fb fb fb fb fb fb fb fc fc fc fc Allocated: [] pv_queued_spin_lock_slowpath arch/x86/include/asm/paravirt.h:663 [inline] [] queued_spin_lock_slowpath arch/x86/include/asm/qspinlock.h:28 [inline] [] queued_spin_lock include/asm-generic/qspinlock.h:103 [inline] [] queued_write_lock_slowpath+0x116/0x150 kernel/locking/qrwlock.c:115 [] pv_queued_spin_lock_slowpath arch/x86/include/asm/paravirt.h:663 [inline] [] queued_spin_lock_slowpath arch/x86/include/asm/qspinlock.h:28 [inline] [] queued_spin_lock include/asm-generic/qspinlock.h:103 [inline] [] queued_write_lock_slowpath+0x116/0x150 kernel/locking/qrwlock.c:115 ffffffff8153a2cc ffffed003946c3dc ffff8801d77ff780 0000000000000000 [] sg_remove_request+0x70/0x120 drivers/scsi/sg.c:2122 save_stack+0x43/0xd0 mm/kasan/kasan.c:495 ffff8801ca361f80: fb fb fb fb fb fb fb fb fb fb fb fb fc fc fc fc BUG: KASAN: slab-out-of-bounds in __read_once_size include/linux/compiler.h:243 [inline] at addr ffff8801ca361ee4 BUG: KASAN: slab-out-of-bounds in atomic_read arch/x86/include/asm/atomic.h:26 [inline] at addr ffff8801ca361ee4 BUG: KASAN: slab-out-of-bounds in virt_spin_lock arch/x86/include/asm/qspinlock.h:56 [inline] at addr ffff8801ca361ee4 BUG: KASAN: slab-out-of-bounds in native_queued_spin_lock_slowpath+0x6a1/0x6c0 kernel/locking/qspinlock.c:421 at addr ffff8801ca361ee4 Read of size 4 by task syz-executor0/10501 ^ [] do_loop_readv_writev.part.17+0x141/0x1e0 fs/read_write.c:714 [] __read_once_size include/linux/compiler.h:243 [inline] [] atomic_read arch/x86/include/asm/atomic.h:26 [inline] [] virt_spin_lock arch/x86/include/asm/qspinlock.h:56 [inline] [] native_queued_spin_lock_slowpath+0x6a1/0x6c0 kernel/locking/qspinlock.c:421 set_track mm/kasan/kasan.c:507 [inline] kasan_slab_free+0x73/0xc0 mm/kasan/kasan.c:571 [] do_readv+0xe6/0x250 fs/read_write.c:924 [] __raw_write_lock_irqsave include/linux/rwlock_api_smp.h:187 [inline] [] _raw_write_lock_irqsave+0x56/0x62 kernel/locking/spinlock.c:303 ioctl_fioasync fs/ioctl.c:534 [inline] do_vfs_ioctl+0x2d8/0x1140 fs/ioctl.c:639 [] vfs_readv+0x84/0xc0 fs/read_write.c:898 Call Trace: set_track mm/kasan/kasan.c:507 [inline] kasan_kmalloc+0xad/0xe0 mm/kasan/kasan.c:598 slab_free_hook mm/slub.c:1355 [inline] slab_free_freelist_hook mm/slub.c:1377 [inline] slab_free mm/slub.c:2958 [inline] kmem_cache_free+0xb2/0x2e0 mm/slub.c:2980 Freed: ffff8801ca361e00: fb fb fb fb fb fb fb fb fb fb fb fb fc fc fc fc [] vfs_readv+0x84/0xc0 fs/read_write.c:898 [] pv_queued_spin_lock_slowpath arch/x86/include/asm/paravirt.h:663 [inline] [] queued_spin_lock_slowpath arch/x86/include/asm/qspinlock.h:28 [inline] [] queued_spin_lock include/asm-generic/qspinlock.h:103 [inline] [] queued_write_lock_slowpath+0x116/0x150 kernel/locking/qrwlock.c:115 slab_post_alloc_hook mm/slab.h:417 [inline] slab_alloc_node mm/slub.c:2715 [inline] slab_alloc mm/slub.c:2723 [inline] kmem_cache_alloc+0xba/0x290 mm/slub.c:2728 slab_free_hook mm/slub.c:1355 [inline] slab_free_freelist_hook mm/slub.c:1377 [inline] slab_free mm/slub.c:2958 [inline] kmem_cache_free+0xb2/0x2e0 mm/slub.c:2980 sg_fasync+0x86/0xb0 drivers/scsi/sg.c:1203 [] sg_remove_request+0x70/0x120 drivers/scsi/sg.c:2122 ioctl_fioasync fs/ioctl.c:534 [inline] do_vfs_ioctl+0x2d8/0x1140 fs/ioctl.c:639 [] do_loop_readv_writev.part.17+0x141/0x1e0 fs/read_write.c:714 [] __raw_write_lock_irqsave include/linux/rwlock_api_smp.h:187 [inline] [] _raw_write_lock_irqsave+0x56/0x62 kernel/locking/spinlock.c:303 slab_post_alloc_hook mm/slab.h:417 [inline] slab_alloc_node mm/slub.c:2715 [inline] slab_alloc mm/slub.c:2723 [inline] kmem_cache_alloc+0xba/0x290 mm/slub.c:2728 fasync_free_rcu+0x1d/0x20 fs/fcntl.c:563 ffff8801ca361f80: fb fb fb fb fb fb fb fb fb fb fb fb fc fc fc fc Object at ffff8801ca361e80, in cache fasync_cache size: 96 set_track mm/kasan/kasan.c:507 [inline] kasan_kmalloc+0xad/0xe0 mm/kasan/kasan.c:598 ================================================================== kasan_slab_alloc+0x12/0x20 mm/kasan/kasan.c:537 save_stack_trace+0x16/0x20 arch/x86/kernel/stacktrace.c:57 [] SYSC_readv fs/read_write.c:1011 [inline] [] SyS_readv+0x27/0x30 fs/read_write.c:1008 Call Trace: ^ Allocated: [] pv_queued_spin_lock_slowpath arch/x86/include/asm/paravirt.h:663 [inline] [] queued_spin_lock_slowpath arch/x86/include/asm/qspinlock.h:28 [inline] [] queued_spin_lock include/asm-generic/qspinlock.h:103 [inline] [] queued_write_lock_slowpath+0x116/0x150 kernel/locking/qrwlock.c:115 ffff8801ca361f00: fb fb fb fb fb fb fb fb fb fb fb fb fc fc fc fc Object at ffff8801ca361e80, in cache fasync_cache size: 96 fasync_alloc fs/fcntl.c:604 [inline] fasync_add_entry fs/fcntl.c:662 [inline] fasync_helper+0x37/0xb0 fs/fcntl.c:691 Read of size 4 by task syz-executor0/10501 ^ [] SYSC_readv fs/read_write.c:1011 [inline] [] SyS_readv+0x27/0x30 fs/read_write.c:1008 ffff8801ca361ee0 ffffed003946c3dc ffff8801ca361ee4 ffff8801c9d6f8d8 [] do_readv+0xe6/0x250 fs/read_write.c:924 [] pv_queued_spin_lock_slowpath arch/x86/include/asm/paravirt.h:663 [inline] [] queued_spin_lock_slowpath arch/x86/include/asm/qspinlock.h:28 [inline] [] queued_spin_lock include/asm-generic/qspinlock.h:103 [inline] [] queued_write_lock_slowpath+0x116/0x150 kernel/locking/qrwlock.c:115 Read of size 4 by task syz-executor0/10501 [] vfs_readv+0x84/0xc0 fs/read_write.c:898 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [] __read_once_size include/linux/compiler.h:243 [inline] [] atomic_read arch/x86/include/asm/atomic.h:26 [inline] [] virt_spin_lock arch/x86/include/asm/qspinlock.h:56 [inline] [] native_queued_spin_lock_slowpath+0x6a1/0x6c0 kernel/locking/qspinlock.c:421 __do_softirq+0x206/0x951 kernel/softirq.c:284 Object at ffff8801ca361e80, in cache fasync_cache size: 96 Allocated: [] pv_queued_spin_lock_slowpath arch/x86/include/asm/paravirt.h:663 [inline] [] queued_spin_lock_slowpath arch/x86/include/asm/qspinlock.h:28 [inline] [] queued_spin_lock include/asm-generic/qspinlock.h:103 [inline] [] queued_write_lock_slowpath+0x116/0x150 kernel/locking/qrwlock.c:115 [] vfs_readv+0x84/0xc0 fs/read_write.c:898 Call Trace: >ffff8801ca361e80: 00 00 00 00 00 00 00 00 00 00 00 00 fc fc fc fc [] do_loop_readv_writev.part.17+0x141/0x1e0 fs/read_write.c:714 [] kasan_report mm/kasan/report.c:329 [inline] [] __asan_report_load4_noabort+0x29/0x30 mm/kasan/report.c:329 [] do_loop_readv_writev.part.17+0x141/0x1e0 fs/read_write.c:714 [] pv_queued_spin_lock_slowpath arch/x86/include/asm/paravirt.h:663 [inline] [] queued_spin_lock_slowpath arch/x86/include/asm/qspinlock.h:28 [inline] [] queued_spin_lock include/asm-generic/qspinlock.h:103 [inline] [] queued_write_lock_slowpath+0x116/0x150 kernel/locking/qrwlock.c:115 fasync_alloc fs/fcntl.c:604 [inline] fasync_add_entry fs/fcntl.c:662 [inline] fasync_helper+0x37/0xb0 fs/fcntl.c:691 CPU: 0 PID: 10501 Comm: syz-executor0 Tainted: G B 4.9.67-gf26d3c7 #106 Allocated: [] __raw_write_lock_irqsave include/linux/rwlock_api_smp.h:187 [inline] [] _raw_write_lock_irqsave+0x56/0x62 kernel/locking/spinlock.c:303 Allocated: [] __raw_write_lock_irqsave include/linux/rwlock_api_smp.h:187 [inline] [] _raw_write_lock_irqsave+0x56/0x62 kernel/locking/spinlock.c:303 [] do_readv+0xe6/0x250 fs/read_write.c:924 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [] queued_write_lock include/asm-generic/qrwlock.h:134 [inline] [] do_raw_write_lock+0xc7/0x1d0 kernel/locking/spinlock_debug.c:203 slab_post_alloc_hook mm/slab.h:417 [inline] slab_alloc_node mm/slub.c:2715 [inline] slab_alloc mm/slub.c:2723 [inline] kmem_cache_alloc+0xba/0x290 mm/slub.c:2728 slab_free_hook mm/slub.c:1355 [inline] slab_free_freelist_hook mm/slub.c:1377 [inline] slab_free mm/slub.c:2958 [inline] kmem_cache_free+0xb2/0x2e0 mm/slub.c:2980 save_stack_trace+0x16/0x20 arch/x86/kernel/stacktrace.c:57 fasync_alloc fs/fcntl.c:604 [inline] fasync_add_entry fs/fcntl.c:662 [inline] fasync_helper+0x37/0xb0 fs/fcntl.c:691 ================================================================== ffffffff8153a2cc ffffed003946c3dc ffff8801d77ff780 0000000000000000 BUG: KASAN: slab-out-of-bounds in __read_once_size include/linux/compiler.h:243 [inline] at addr ffff8801ca361ee4 BUG: KASAN: slab-out-of-bounds in atomic_read arch/x86/include/asm/atomic.h:26 [inline] at addr ffff8801ca361ee4 BUG: KASAN: slab-out-of-bounds in virt_spin_lock arch/x86/include/asm/qspinlock.h:56 [inline] at addr ffff8801ca361ee4 BUG: KASAN: slab-out-of-bounds in native_queued_spin_lock_slowpath+0x6a1/0x6c0 kernel/locking/qspinlock.c:421 at addr ffff8801ca361ee4 slab_free_hook mm/slub.c:1355 [inline] slab_free_freelist_hook mm/slub.c:1377 [inline] slab_free mm/slub.c:2958 [inline] kmem_cache_free+0xb2/0x2e0 mm/slub.c:2980 [] vfs_readv+0x84/0xc0 fs/read_write.c:898 Call Trace: >ffff8801ca361e80: 00 00 00 00 00 00 00 00 00 00 00 00 fc fc fc fc Read of size 4 by task syz-executor0/10501 >ffff8801ca361e80: 00 00 00 00 00 00 00 00 00 00 00 00 fc fc fc fc [] vfs_readv+0x84/0xc0 fs/read_write.c:898 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [] __raw_write_lock_irqsave include/linux/rwlock_api_smp.h:187 [inline] [] _raw_write_lock_irqsave+0x56/0x62 kernel/locking/spinlock.c:303 set_track mm/kasan/kasan.c:507 [inline] kasan_kmalloc+0xad/0xe0 mm/kasan/kasan.c:598 ffff8801ca361f80: fb fb fb fb fb fb fb fb fb fb fb fb fc fc fc fc CPU: 0 PID: 10501 Comm: syz-executor0 Tainted: G B 4.9.67-gf26d3c7 #106 [] queued_write_lock include/asm-generic/qrwlock.h:134 [inline] [] do_raw_write_lock+0xc7/0x1d0 kernel/locking/spinlock_debug.c:203 [] vfs_readv+0x84/0xc0 fs/read_write.c:898 Read of size 4 by task syz-executor0/10501 Freed: [] vfs_readv+0x84/0xc0 fs/read_write.c:898 BUG: KASAN: slab-out-of-bounds in __read_once_size include/linux/compiler.h:243 [inline] at addr ffff8801ca361ee4 BUG: KASAN: slab-out-of-bounds in atomic_read arch/x86/include/asm/atomic.h:26 [inline] at addr ffff8801ca361ee4 BUG: KASAN: slab-out-of-bounds in virt_spin_lock arch/x86/include/asm/qspinlock.h:56 [inline] at addr ffff8801ca361ee4 BUG: KASAN: slab-out-of-bounds in native_queued_spin_lock_slowpath+0x6a1/0x6c0 kernel/locking/qspinlock.c:421 at addr ffff8801ca361ee4 PID = 17 save_stack+0x43/0xd0 mm/kasan/kasan.c:495 ^ [] kasan_report mm/kasan/report.c:329 [inline] [] __asan_report_load4_noabort+0x29/0x30 mm/kasan/report.c:329 [] sg_read+0xa1c/0x1440 drivers/scsi/sg.c:527 [] __raw_write_lock_irqsave include/linux/rwlock_api_smp.h:187 [inline] [] _raw_write_lock_irqsave+0x56/0x62 kernel/locking/spinlock.c:303 ffff8801ca361e00: fb fb fb fb fb fb fb fb fb fb fb fb fc fc fc fc [] entry_SYSCALL_64_fastpath+0x23/0xc6 Read of size 4 by task syz-executor0/10501 BUG: KASAN: slab-out-of-bounds in __read_once_size include/linux/compiler.h:243 [inline] at addr ffff8801ca361ee4 BUG: KASAN: slab-out-of-bounds in atomic_read arch/x86/include/asm/atomic.h:26 [inline] at addr ffff8801ca361ee4 BUG: KASAN: slab-out-of-bounds in virt_spin_lock arch/x86/include/asm/qspinlock.h:56 [inline] at addr ffff8801ca361ee4 BUG: KASAN: slab-out-of-bounds in native_queued_spin_lock_slowpath+0x6a1/0x6c0 kernel/locking/qspinlock.c:421 at addr ffff8801ca361ee4 ffff8801c9d6f8b0 ffffffff81d906e9 ffff8801d77ff780 ffff8801ca361e80 [] vfs_readv+0x84/0xc0 fs/read_write.c:898 Memory state around the buggy address: [] __raw_write_lock_irqsave include/linux/rwlock_api_smp.h:187 [inline] [] _raw_write_lock_irqsave+0x56/0x62 kernel/locking/spinlock.c:303 Read of size 4 by task syz-executor0/10501 slab_post_alloc_hook mm/slab.h:417 [inline] slab_alloc_node mm/slub.c:2715 [inline] slab_alloc mm/slub.c:2723 [inline] kmem_cache_alloc+0xba/0x290 mm/slub.c:2728 Freed: BUG: KASAN: slab-out-of-bounds in __read_once_size include/linux/compiler.h:243 [inline] at addr ffff8801ca361ee4 BUG: KASAN: slab-out-of-bounds in atomic_read arch/x86/include/asm/atomic.h:26 [inline] at addr ffff8801ca361ee4 BUG: KASAN: slab-out-of-bounds in virt_spin_lock arch/x86/include/asm/qspinlock.h:56 [inline] at addr ffff8801ca361ee4 BUG: KASAN: slab-out-of-bounds in native_queued_spin_lock_slowpath+0x6a1/0x6c0 kernel/locking/qspinlock.c:421 at addr ffff8801ca361ee4 [] queued_write_lock include/asm-generic/qrwlock.h:134 [inline] [] do_raw_write_lock+0xc7/0x1d0 kernel/locking/spinlock_debug.c:203 Freed: Allocated: CPU: 0 PID: 10501 Comm: syz-executor0 Tainted: G B 4.9.67-gf26d3c7 #106 BUG: KASAN: slab-out-of-bounds in __read_once_size include/linux/compiler.h:243 [inline] at addr ffff8801ca361ee4 BUG: KASAN: slab-out-of-bounds in atomic_read arch/x86/include/asm/atomic.h:26 [inline] at addr ffff8801ca361ee4 BUG: KASAN: slab-out-of-bounds in virt_spin_lock arch/x86/include/asm/qspinlock.h:56 [inline] at addr ffff8801ca361ee4 BUG: KASAN: slab-out-of-bounds in native_queued_spin_lock_slowpath+0x6a1/0x6c0 kernel/locking/qspinlock.c:421 at addr ffff8801ca361ee4 ================================================================== PID = 10501 [] do_loop_readv_writev fs/read_write.c:880 [inline] [] do_readv_writev+0x520/0x750 fs/read_write.c:874 [] do_loop_readv_writev.part.17+0x141/0x1e0 fs/read_write.c:714 [] queued_write_lock include/asm-generic/qrwlock.h:134 [inline] [] do_raw_write_lock+0xc7/0x1d0 kernel/locking/spinlock_debug.c:203 slab_post_alloc_hook mm/slab.h:417 [inline] slab_alloc_node mm/slub.c:2715 [inline] slab_alloc mm/slub.c:2723 [inline] kmem_cache_alloc+0xba/0x290 mm/slub.c:2728 Freed: ffff8801ca361f80: fb fb fb fb fb fb fb fb fb fb fb fb fc fc fc fc Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 slab_free_hook mm/slub.c:1355 [inline] slab_free_freelist_hook mm/slub.c:1377 [inline] slab_free mm/slub.c:2958 [inline] kmem_cache_free+0xb2/0x2e0 mm/slub.c:2980 [] vfs_readv+0x84/0xc0 fs/read_write.c:898 [] kasan_report mm/kasan/report.c:329 [inline] [] __asan_report_load4_noabort+0x29/0x30 mm/kasan/report.c:329 [] vfs_readv+0x84/0xc0 fs/read_write.c:898 [] do_loop_readv_writev fs/read_write.c:880 [inline] [] do_readv_writev+0x520/0x750 fs/read_write.c:874 set_track mm/kasan/kasan.c:507 [inline] kasan_kmalloc+0xad/0xe0 mm/kasan/kasan.c:598 ================================================================== [] do_readv+0xe6/0x250 fs/read_write.c:924 Allocated: [] __read_once_size include/linux/compiler.h:243 [inline] [] atomic_read arch/x86/include/asm/atomic.h:26 [inline] [] virt_spin_lock arch/x86/include/asm/qspinlock.h:56 [inline] [] native_queued_spin_lock_slowpath+0x6a1/0x6c0 kernel/locking/qspinlock.c:421 kasan_slab_alloc+0x12/0x20 mm/kasan/kasan.c:537 Object at ffff8801ca361e80, in cache fasync_cache size: 96 kasan_slab_alloc+0x12/0x20 mm/kasan/kasan.c:537 Allocated: [] __read_once_size include/linux/compiler.h:243 [inline] [] atomic_read arch/x86/include/asm/atomic.h:26 [inline] [] virt_spin_lock arch/x86/include/asm/qspinlock.h:56 [inline] [] native_queued_spin_lock_slowpath+0x6a1/0x6c0 kernel/locking/qspinlock.c:421 set_track mm/kasan/kasan.c:507 [inline] kasan_kmalloc+0xad/0xe0 mm/kasan/kasan.c:598 Read of size 4 by task syz-executor0/10501 ffff8801ca361f80: fb fb fb fb fb fb fb fb fb fb fb fb fc fc fc fc set_track mm/kasan/kasan.c:507 [inline] kasan_kmalloc+0xad/0xe0 mm/kasan/kasan.c:598 BUG: KASAN: slab-out-of-bounds in __read_once_size include/linux/compiler.h:243 [inline] at addr ffff8801ca361ee4 BUG: KASAN: slab-out-of-bounds in atomic_read arch/x86/include/asm/atomic.h:26 [inline] at addr ffff8801ca361ee4 BUG: KASAN: slab-out-of-bounds in virt_spin_lock arch/x86/include/asm/qspinlock.h:56 [inline] at addr ffff8801ca361ee4 BUG: KASAN: slab-out-of-bounds in native_queued_spin_lock_slowpath+0x6a1/0x6c0 kernel/locking/qspinlock.c:421 at addr ffff8801ca361ee4 ================================================================== set_track mm/kasan/kasan.c:507 [inline] kasan_kmalloc+0xad/0xe0 mm/kasan/kasan.c:598 ================================================================== [] entry_SYSCALL_64_fastpath+0x23/0xc6 [] do_readv+0xe6/0x250 fs/read_write.c:924 [] __raw_write_lock_irqsave include/linux/rwlock_api_smp.h:187 [inline] [] _raw_write_lock_irqsave+0x56/0x62 kernel/locking/spinlock.c:303 fasync_alloc fs/fcntl.c:604 [inline] fasync_add_entry fs/fcntl.c:662 [inline] fasync_helper+0x37/0xb0 fs/fcntl.c:691 BUG: KASAN: slab-out-of-bounds in __read_once_size include/linux/compiler.h:243 [inline] at addr ffff8801ca361ee4 BUG: KASAN: slab-out-of-bounds in atomic_read arch/x86/include/asm/atomic.h:26 [inline] at addr ffff8801ca361ee4 BUG: KASAN: slab-out-of-bounds in virt_spin_lock arch/x86/include/asm/qspinlock.h:56 [inline] at addr ffff8801ca361ee4 BUG: KASAN: slab-out-of-bounds in native_queued_spin_lock_slowpath+0x6a1/0x6c0 kernel/locking/qspinlock.c:421 at addr ffff8801ca361ee4 [] sg_finish_rem_req+0x295/0x340 drivers/scsi/sg.c:1838 ================================================================== slab_post_alloc_hook mm/slab.h:417 [inline] slab_alloc_node mm/slub.c:2715 [inline] slab_alloc mm/slub.c:2723 [inline] kmem_cache_alloc+0xba/0x290 mm/slub.c:2728 slab_free_hook mm/slub.c:1355 [inline] slab_free_freelist_hook mm/slub.c:1377 [inline] slab_free mm/slub.c:2958 [inline] kmem_cache_free+0xb2/0x2e0 mm/slub.c:2980 ioctl_fioasync fs/ioctl.c:534 [inline] do_vfs_ioctl+0x2d8/0x1140 fs/ioctl.c:639 [] vfs_readv+0x84/0xc0 fs/read_write.c:898 [] __raw_write_lock_irqsave include/linux/rwlock_api_smp.h:187 [inline] [] _raw_write_lock_irqsave+0x56/0x62 kernel/locking/spinlock.c:303 [] sg_read+0xa1c/0x1440 drivers/scsi/sg.c:527 [] queued_write_lock include/asm-generic/qrwlock.h:134 [inline] [] do_raw_write_lock+0xc7/0x1d0 kernel/locking/spinlock_debug.c:203 sg_fasync+0x86/0xb0 drivers/scsi/sg.c:1203 [] sg_remove_request+0x70/0x120 drivers/scsi/sg.c:2122 kasan_slab_alloc+0x12/0x20 mm/kasan/kasan.c:537 Object at ffff8801ca361e80, in cache fasync_cache size: 96 save_stack_trace+0x16/0x20 arch/x86/kernel/stacktrace.c:57 [] do_readv+0xe6/0x250 fs/read_write.c:924 [] __raw_write_lock_irqsave include/linux/rwlock_api_smp.h:187 [inline] [] _raw_write_lock_irqsave+0x56/0x62 kernel/locking/spinlock.c:303 kasan_slab_alloc+0x12/0x20 mm/kasan/kasan.c:537 PID = 10501 Call Trace: ffff8801ca361f00: fb fb fb fb fb fb fb fb fb fb fb fb fc fc fc fc Allocated: ffff8801c9d6f8b0 ffffffff81d906e9 ffff8801d77ff780 ffff8801ca361e80 [] kasan_object_err+0x1c/0x70 mm/kasan/report.c:160 [] __raw_write_lock_irqsave include/linux/rwlock_api_smp.h:187 [inline] [] _raw_write_lock_irqsave+0x56/0x62 kernel/locking/spinlock.c:303 kasan_slab_alloc+0x12/0x20 mm/kasan/kasan.c:537 [] SYSC_readv fs/read_write.c:1011 [inline] [] SyS_readv+0x27/0x30 fs/read_write.c:1008 [] __raw_write_lock_irqsave include/linux/rwlock_api_smp.h:187 [inline] [] _raw_write_lock_irqsave+0x56/0x62 kernel/locking/spinlock.c:303 save_stack_trace+0x16/0x20 arch/x86/kernel/stacktrace.c:57 ffff8801ca361f80: fb fb fb fb fb fb fb fb fb fb fb fb fc fc fc fc [] SYSC_readv fs/read_write.c:1011 [inline] [] SyS_readv+0x27/0x30 fs/read_write.c:1008 [] queued_write_lock include/asm-generic/qrwlock.h:134 [inline] [] do_raw_write_lock+0xc7/0x1d0 kernel/locking/spinlock_debug.c:203 Object at ffff8801ca361e80, in cache fasync_cache size: 96 [] entry_SYSCALL_64_fastpath+0x23/0xc6 [] __raw_write_lock_irqsave include/linux/rwlock_api_smp.h:187 [inline] [] _raw_write_lock_irqsave+0x56/0x62 kernel/locking/spinlock.c:303 ffffffff8153a2cc ffffed003946c3dc ffff8801d77ff780 0000000000000000 Read of size 4 by task syz-executor0/10501 ffff8801ca361f80: fb fb fb fb fb fb fb fb fb fb fb fb fc fc fc fc fasync_alloc fs/fcntl.c:604 [inline] fasync_add_entry fs/fcntl.c:662 [inline] fasync_helper+0x37/0xb0 fs/fcntl.c:691 ffff8801ca361f00: fb fb fb fb fb fb fb fb fb fb fb fb fc fc fc fc save_stack+0x43/0xd0 mm/kasan/kasan.c:495 save_stack+0x43/0xd0 mm/kasan/kasan.c:495 [] kasan_report mm/kasan/report.c:329 [inline] [] __asan_report_load4_noabort+0x29/0x30 mm/kasan/report.c:329 [] sg_remove_request+0x70/0x120 drivers/scsi/sg.c:2122 [] __read_once_size include/linux/compiler.h:243 [inline] [] atomic_read arch/x86/include/asm/atomic.h:26 [inline] [] virt_spin_lock arch/x86/include/asm/qspinlock.h:56 [inline] [] native_queued_spin_lock_slowpath+0x6a1/0x6c0 kernel/locking/qspinlock.c:421 ffff8801c9d6f8b0 ffffffff81d906e9 ffff8801d77ff780 ffff8801ca361e80 ================================================================== set_track mm/kasan/kasan.c:507 [inline] kasan_kmalloc+0xad/0xe0 mm/kasan/kasan.c:598 ffff8801ca361f00: fb fb fb fb fb fb fb fb fb fb fb fb fc fc fc fc [] __raw_write_lock_irqsave include/linux/rwlock_api_smp.h:187 [inline] [] _raw_write_lock_irqsave+0x56/0x62 kernel/locking/spinlock.c:303 ================================================================== [] pv_queued_spin_lock_slowpath arch/x86/include/asm/paravirt.h:663 [inline] [] queued_spin_lock_slowpath arch/x86/include/asm/qspinlock.h:28 [inline] [] queued_spin_lock include/asm-generic/qspinlock.h:103 [inline] [] queued_write_lock_slowpath+0x116/0x150 kernel/locking/qrwlock.c:115 CPU: 0 PID: 10501 Comm: syz-executor0 Tainted: G B 4.9.67-gf26d3c7 #106 [] pv_queued_spin_lock_slowpath arch/x86/include/asm/paravirt.h:663 [inline] [] queued_spin_lock_slowpath arch/x86/include/asm/qspinlock.h:28 [inline] [] queued_spin_lock include/asm-generic/qspinlock.h:103 [inline] [] queued_write_lock_slowpath+0x116/0x150 kernel/locking/qrwlock.c:115 save_stack_trace+0x16/0x20 arch/x86/kernel/stacktrace.c:57 [] do_readv+0xe6/0x250 fs/read_write.c:924 [] kasan_report mm/kasan/report.c:329 [inline] [] __asan_report_load4_noabort+0x29/0x30 mm/kasan/report.c:329 [] pv_queued_spin_lock_slowpath arch/x86/include/asm/paravirt.h:663 [inline] [] queued_spin_lock_slowpath arch/x86/include/asm/qspinlock.h:28 [inline] [] queued_spin_lock include/asm-generic/qspinlock.h:103 [inline] [] queued_write_lock_slowpath+0x116/0x150 kernel/locking/qrwlock.c:115 [] __read_once_size include/linux/compiler.h:243 [inline] [] atomic_read arch/x86/include/asm/atomic.h:26 [inline] [] virt_spin_lock arch/x86/include/asm/qspinlock.h:56 [inline] [] native_queued_spin_lock_slowpath+0x6a1/0x6c0 kernel/locking/qspinlock.c:421 slab_post_alloc_hook mm/slab.h:417 [inline] slab_alloc_node mm/slub.c:2715 [inline] slab_alloc mm/slub.c:2723 [inline] kmem_cache_alloc+0xba/0x290 mm/slub.c:2728 Freed: BUG: KASAN: slab-out-of-bounds in __read_once_size include/linux/compiler.h:243 [inline] at addr ffff8801ca361ee4 BUG: KASAN: slab-out-of-bounds in atomic_read arch/x86/include/asm/atomic.h:26 [inline] at addr ffff8801ca361ee4 BUG: KASAN: slab-out-of-bounds in virt_spin_lock arch/x86/include/asm/qspinlock.h:56 [inline] at addr ffff8801ca361ee4 BUG: KASAN: slab-out-of-bounds in native_queued_spin_lock_slowpath+0x6a1/0x6c0 kernel/locking/qspinlock.c:421 at addr ffff8801ca361ee4 fasync_free_rcu+0x1d/0x20 fs/fcntl.c:563 ffffffff8153a2cc ffffed003946c3dc ffff8801d77ff780 0000000000000000 ================================================================== [] do_readv+0xe6/0x250 fs/read_write.c:924 ffffffff8153a2cc ffffed003946c3dc ffff8801d77ff780 0000000000000000 [] kasan_report mm/kasan/report.c:329 [inline] [] __asan_report_load4_noabort+0x29/0x30 mm/kasan/report.c:329 [] __raw_write_lock_irqsave include/linux/rwlock_api_smp.h:187 [inline] [] _raw_write_lock_irqsave+0x56/0x62 kernel/locking/spinlock.c:303 ffff8801ca361f80: fb fb fb fb fb fb fb fb fb fb fb fb fc fc fc fc [] vfs_readv+0x84/0xc0 fs/read_write.c:898 [] pv_queued_spin_lock_slowpath arch/x86/include/asm/paravirt.h:663 [inline] [] queued_spin_lock_slowpath arch/x86/include/asm/qspinlock.h:28 [inline] [] queued_spin_lock include/asm-generic/qspinlock.h:103 [inline] [] queued_write_lock_slowpath+0x116/0x150 kernel/locking/qrwlock.c:115 kasan_slab_alloc+0x12/0x20 mm/kasan/kasan.c:537 Allocated: [] pv_queued_spin_lock_slowpath arch/x86/include/asm/paravirt.h:663 [inline] [] queued_spin_lock_slowpath arch/x86/include/asm/qspinlock.h:28 [inline] [] queued_spin_lock include/asm-generic/qspinlock.h:103 [inline] [] queued_write_lock_slowpath+0x116/0x150 kernel/locking/qrwlock.c:115 [] sg_read+0xa1c/0x1440 drivers/scsi/sg.c:527 Call Trace: Freed: [] pv_queued_spin_lock_slowpath arch/x86/include/asm/paravirt.h:663 [inline] [] queued_spin_lock_slowpath arch/x86/include/asm/qspinlock.h:28 [inline] [] queued_spin_lock include/asm-generic/qspinlock.h:103 [inline] [] queued_write_lock_slowpath+0x116/0x150 kernel/locking/qrwlock.c:115 slab_post_alloc_hook mm/slab.h:417 [inline] slab_alloc_node mm/slub.c:2715 [inline] slab_alloc mm/slub.c:2723 [inline] kmem_cache_alloc+0xba/0x290 mm/slub.c:2728 slab_free_hook mm/slub.c:1355 [inline] slab_free_freelist_hook mm/slub.c:1377 [inline] slab_free mm/slub.c:2958 [inline] kmem_cache_free+0xb2/0x2e0 mm/slub.c:2980 sg_fasync+0x86/0xb0 drivers/scsi/sg.c:1203 [] sg_remove_request+0x70/0x120 drivers/scsi/sg.c:2122 entry_SYSCALL_64_fastpath+0x23/0xc6 [] do_loop_readv_writev fs/read_write.c:880 [inline] [] do_readv_writev+0x520/0x750 fs/read_write.c:874 kasan_slab_alloc+0x12/0x20 mm/kasan/kasan.c:537 ffff8801c9d6f8b0 ffffffff81d906e9 ffff8801d77ff780 ffff8801ca361e80 ================================================================== [] pv_queued_spin_lock_slowpath arch/x86/include/asm/paravirt.h:663 [inline] [] queued_spin_lock_slowpath arch/x86/include/asm/qspinlock.h:28 [inline] [] queued_spin_lock include/asm-generic/qspinlock.h:103 [inline] [] queued_write_lock_slowpath+0x116/0x150 kernel/locking/qrwlock.c:115 [] do_readv+0xe6/0x250 fs/read_write.c:924 ioctl_fioasync fs/ioctl.c:534 [inline] do_vfs_ioctl+0x2d8/0x1140 fs/ioctl.c:639 ffff8801ca361ee0 ffffed003946c3dc ffff8801ca361ee4 ffff8801c9d6f8d8 Allocated: [] kasan_report mm/kasan/report.c:329 [inline] [] __asan_report_load4_noabort+0x29/0x30 mm/kasan/report.c:329 [] sg_finish_rem_req+0x295/0x340 drivers/scsi/sg.c:1838 ffff8801ca361f00: fb fb fb fb fb fb fb fb fb fb fb fb fc fc fc fc [] entry_SYSCALL_64_fastpath+0x23/0xc6 >ffff8801ca361e80: 00 00 00 00 00 00 00 00 00 00 00 00 fc fc fc fc [] SYSC_readv fs/read_write.c:1011 [inline] [] SyS_readv+0x27/0x30 fs/read_write.c:1008 [] sg_remove_request+0x70/0x120 drivers/scsi/sg.c:2122 kasan_slab_alloc+0x12/0x20 mm/kasan/kasan.c:537 [] SYSC_readv fs/read_write.c:1011 [inline] [] SyS_readv+0x27/0x30 fs/read_write.c:1008 ffff8801ca361e00: fb fb fb fb fb fb fb fb fb fb fb fb fc fc fc fc [] entry_SYSCALL_64_fastpath+0x23/0xc6 Read of size 4 by task syz-executor0/10501 ^ [] vfs_readv+0x84/0xc0 fs/read_write.c:898 [] queued_write_lock include/asm-generic/qrwlock.h:134 [inline] [] do_raw_write_lock+0xc7/0x1d0 kernel/locking/spinlock_debug.c:203 set_track mm/kasan/kasan.c:507 [inline] kasan_kmalloc+0xad/0xe0 mm/kasan/kasan.c:598 ffff8801ca361f00: fb fb fb fb fb fb fb fb fb fb fb fb fc fc fc fc [] vfs_readv+0x84/0xc0 fs/read_write.c:898 Call Trace: ffff8801ca361e00: fb fb fb fb fb fb fb fb fb fb fb fb fc fc fc fc [] __read_once_size include/linux/compiler.h:243 [inline] [] atomic_read arch/x86/include/asm/atomic.h:26 [inline] [] virt_spin_lock arch/x86/include/asm/qspinlock.h:56 [inline] [] native_queued_spin_lock_slowpath+0x6a1/0x6c0 kernel/locking/qspinlock.c:421 ffff8801ca361d80: fb fb fb fb fb fb fb fb fb fb fb fb fc fc fc fc ffff8801ca361ee0 ffffed003946c3dc ffff8801ca361ee4 ffff8801c9d6f8d8 ================================================================== [] vfs_readv+0x84/0xc0 fs/read_write.c:898 ffffffff8153a2cc ffffed003946c3dc ffff8801d77ff780 0000000000000000 Read of size 4 by task syz-executor0/10501 save_stack_trace+0x16/0x20 arch/x86/kernel/stacktrace.c:57 save_stack+0x43/0xd0 mm/kasan/kasan.c:495 >ffff8801ca361e80: 00 00 00 00 00 00 00 00 00 00 00 00 fc fc fc fc [] queued_write_lock include/asm-generic/qrwlock.h:134 [inline] [] do_raw_write_lock+0xc7/0x1d0 kernel/locking/spinlock_debug.c:203 __rcu_reclaim kernel/rcu/rcu.h:118 [inline] rcu_do_batch kernel/rcu/tree.c:2789 [inline] invoke_rcu_callbacks kernel/rcu/tree.c:3053 [inline] __rcu_process_callbacks kernel/rcu/tree.c:3020 [inline] rcu_process_callbacks+0x871/0x12c0 kernel/rcu/tree.c:3037 [] __raw_write_lock_irqsave include/linux/rwlock_api_smp.h:187 [inline] [] _raw_write_lock_irqsave+0x56/0x62 kernel/locking/spinlock.c:303 [] SYSC_readv fs/read_write.c:1011 [inline] [] SyS_readv+0x27/0x30 fs/read_write.c:1008 [] do_loop_readv_writev fs/read_write.c:880 [inline] [] do_readv_writev+0x520/0x750 fs/read_write.c:874 [] SYSC_readv fs/read_write.c:1011 [inline] [] SyS_readv+0x27/0x30 fs/read_write.c:1008 [] queued_write_lock include/asm-generic/qrwlock.h:134 [inline] [] do_raw_write_lock+0xc7/0x1d0 kernel/locking/spinlock_debug.c:203 ffffffff8153a2cc ffffed003946c3dc ffff8801d77ff780 0000000000000000 __do_softirq+0x206/0x951 kernel/softirq.c:284 [] __raw_write_lock_irqsave include/linux/rwlock_api_smp.h:187 [inline] [] _raw_write_lock_irqsave+0x56/0x62 kernel/locking/spinlock.c:303 kasan_slab_alloc+0x12/0x20 mm/kasan/kasan.c:537 Read of size 4 by task syz-executor0/10501 ^ ffff8801ca361e00: fb fb fb fb fb fb fb fb fb fb fb fb fc fc fc fc [] vfs_readv+0x84/0xc0 fs/read_write.c:898 ffff8801ca361f00: fb fb fb fb fb fb fb fb fb fb fb fb fc fc fc fc [] sg_remove_request+0x70/0x120 drivers/scsi/sg.c:2122 ================================================================== [] do_loop_readv_writev.part.17+0x141/0x1e0 fs/read_write.c:714 ffff8801ca361f00: fb fb fb fb fb fb fb fb fb fb fb fb fc fc fc fc save_stack+0x43/0xd0 mm/kasan/kasan.c:495 save_stack+0x43/0xd0 mm/kasan/kasan.c:495 [] do_loop_readv_writev fs/read_write.c:880 [inline] [] do_readv_writev+0x520/0x750 fs/read_write.c:874 Allocated: ffff8801ca361ee0 ffffed003946c3dc ffff8801ca361ee4 ffff8801c9d6f8d8 ffff8801ca361e00: fb fb fb fb fb fb fb fb fb fb fb fb fc fc fc fc [] do_readv+0xe6/0x250 fs/read_write.c:924 [] __raw_write_lock_irqsave include/linux/rwlock_api_smp.h:187 [inline] [] _raw_write_lock_irqsave+0x56/0x62 kernel/locking/spinlock.c:303 [] SYSC_readv fs/read_write.c:1011 [inline] [] SyS_readv+0x27/0x30 fs/read_write.c:1008 ffff8801ca361f00: fb fb fb fb fb fb fb fb fb fb fb fb fc fc fc fc [] kasan_report mm/kasan/report.c:329 [inline] [] __asan_report_load4_noabort+0x29/0x30 mm/kasan/report.c:329 [] __raw_write_lock_irqsave include/linux/rwlock_api_smp.h:187 [inline] [] _raw_write_lock_irqsave+0x56/0x62 kernel/locking/spinlock.c:303 set_track mm/kasan/kasan.c:507 [inline] kasan_kmalloc+0xad/0xe0 mm/kasan/kasan.c:598 ================================================================== slab_post_alloc_hook mm/slab.h:417 [inline] slab_alloc_node mm/slub.c:2715 [inline] slab_alloc mm/slub.c:2723 [inline] kmem_cache_alloc+0xba/0x290 mm/slub.c:2728 __rcu_reclaim kernel/rcu/rcu.h:118 [inline] rcu_do_batch kernel/rcu/tree.c:2789 [inline] invoke_rcu_callbacks kernel/rcu/tree.c:3053 [inline] __rcu_process_callbacks kernel/rcu/tree.c:3020 [inline] rcu_process_callbacks+0x871/0x12c0 kernel/rcu/tree.c:3037 [] do_loop_readv_writev.part.17+0x141/0x1e0 fs/read_write.c:714 Read of size 4 by task syz-executor0/10501 ^ __do_softirq+0x206/0x951 kernel/softirq.c:284 ffffffff8153a2cc ffffed003946c3dc ffff8801d77ff780 0000000000000000 ffffffff8153a2cc ffffed003946c3dc ffff8801d77ff780 0000000000000000 __do_softirq+0x206/0x951 kernel/softirq.c:284 ^ Read of size 4 by task syz-executor0/10501 ffff8801ca361e00: fb fb fb fb fb fb fb fb fb fb fb fb fc fc fc fc CPU: 0 PID: 10501 Comm: syz-executor0 Tainted: G B 4.9.67-gf26d3c7 #106 __do_softirq+0x206/0x951 kernel/softirq.c:284 [] sg_read+0xa1c/0x1440 drivers/scsi/sg.c:527 ffff8801ca361f00: fb fb fb fb fb fb fb fb fb fb fb fb fc fc fc fc set_track mm/kasan/kasan.c:507 [inline] kasan_slab_free+0x73/0xc0 mm/kasan/kasan.c:571 __rcu_reclaim kernel/rcu/rcu.h:118 [inline] rcu_do_batch kernel/rcu/tree.c:2789 [inline] invoke_rcu_callbacks kernel/rcu/tree.c:3053 [inline] __rcu_process_callbacks kernel/rcu/tree.c:3020 [inline] rcu_process_callbacks+0x871/0x12c0 kernel/rcu/tree.c:3037 >ffff8801ca361e80: 00 00 00 00 00 00 00 00 00 00 00 00 fc fc fc fc [] do_loop_readv_writev.part.17+0x141/0x1e0 fs/read_write.c:714 save_stack+0x43/0xd0 mm/kasan/kasan.c:495 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Read of size 4 by task syz-executor0/10501 [] vfs_readv+0x84/0xc0 fs/read_write.c:898 CPU: 0 PID: 10501 Comm: syz-executor0 Tainted: G B 4.9.67-gf26d3c7 #106 [] do_readv+0xe6/0x250 fs/read_write.c:924 [] __read_once_size include/linux/compiler.h:243 [inline] [] atomic_read arch/x86/include/asm/atomic.h:26 [inline] [] virt_spin_lock arch/x86/include/asm/qspinlock.h:56 [inline] [] native_queued_spin_lock_slowpath+0x6a1/0x6c0 kernel/locking/qspinlock.c:421 SYSC_ioctl fs/ioctl.c:694 [inline] SyS_ioctl+0x8f/0xc0 fs/ioctl.c:685 [] sg_remove_request+0x70/0x120 drivers/scsi/sg.c:2122 fasync_alloc fs/fcntl.c:604 [inline] fasync_add_entry fs/fcntl.c:662 [inline] fasync_helper+0x37/0xb0 fs/fcntl.c:691 BUG: KASAN: slab-out-of-bounds in __read_once_size include/linux/compiler.h:243 [inline] at addr ffff8801ca361ee4 BUG: KASAN: slab-out-of-bounds in atomic_read arch/x86/include/asm/atomic.h:26 [inline] at addr ffff8801ca361ee4 BUG: KASAN: slab-out-of-bounds in virt_spin_lock arch/x86/include/asm/qspinlock.h:56 [inline] at addr ffff8801ca361ee4 BUG: KASAN: slab-out-of-bounds in native_queued_spin_lock_slowpath+0x6a1/0x6c0 kernel/locking/qspinlock.c:421 at addr ffff8801ca361ee4 ================================================================== slab_free_hook mm/slub.c:1355 [inline] slab_free_freelist_hook mm/slub.c:1377 [inline] slab_free mm/slub.c:2958 [inline] kmem_cache_free+0xb2/0x2e0 mm/slub.c:2980 Allocated: Read of size 4 by task syz-executor0/10501 set_track mm/kasan/kasan.c:507 [inline] kasan_kmalloc+0xad/0xe0 mm/kasan/kasan.c:598 __do_softirq+0x206/0x951 kernel/softirq.c:284 BUG: KASAN: slab-out-of-bounds in __read_once_size include/linux/compiler.h:243 [inline] at addr ffff8801ca361ee4 BUG: KASAN: slab-out-of-bounds in atomic_read arch/x86/include/asm/atomic.h:26 [inline] at addr ffff8801ca361ee4 BUG: KASAN: slab-out-of-bounds in virt_spin_lock arch/x86/include/asm/qspinlock.h:56 [inline] at addr ffff8801ca361ee4 BUG: KASAN: slab-out-of-bounds in native_queued_spin_lock_slowpath+0x6a1/0x6c0 kernel/locking/qspinlock.c:421 at addr ffff8801ca361ee4 ffff8801ca361e00: fb fb fb fb fb fb fb fb fb fb fb fb fc fc fc fc [] sg_finish_rem_req+0x295/0x340 drivers/scsi/sg.c:1838 __do_softirq+0x206/0x951 kernel/softirq.c:284 >ffff8801ca361e80: 00 00 00 00 00 00 00 00 00 00 00 00 fc fc fc fc [] sg_remove_request+0x70/0x120 drivers/scsi/sg.c:2122 entry_SYSCALL_64_fastpath+0x23/0xc6 slab_free_hook mm/slub.c:1355 [inline] slab_free_freelist_hook mm/slub.c:1377 [inline] slab_free mm/slub.c:2958 [inline] kmem_cache_free+0xb2/0x2e0 mm/slub.c:2980 slab_post_alloc_hook mm/slab.h:417 [inline] slab_alloc_node mm/slub.c:2715 [inline] slab_alloc mm/slub.c:2723 [inline] kmem_cache_alloc+0xba/0x290 mm/slub.c:2728 __do_softirq+0x206/0x951 kernel/softirq.c:284 Read of size 4 by task syz-executor0/10501 __do_softirq+0x206/0x951 kernel/softirq.c:284 [] sg_remove_request+0x70/0x120 drivers/scsi/sg.c:2122 Object at ffff8801ca361e80, in cache fasync_cache size: 96 Object at ffff8801ca361e80, in cache fasync_cache size: 96 Allocated: [] kasan_object_err+0x1c/0x70 mm/kasan/report.c:160 __rcu_reclaim kernel/rcu/rcu.h:118 [inline] rcu_do_batch kernel/rcu/tree.c:2789 [inline] invoke_rcu_callbacks kernel/rcu/tree.c:3053 [inline] __rcu_process_callbacks kernel/rcu/tree.c:3020 [inline] rcu_process_callbacks+0x871/0x12c0 kernel/rcu/tree.c:3037 Object at ffff8801ca361e80, in cache fasync_cache size: 96 sg_fasync+0x86/0xb0 drivers/scsi/sg.c:1203 [] __raw_write_lock_irqsave include/linux/rwlock_api_smp.h:187 [inline] [] _raw_write_lock_irqsave+0x56/0x62 kernel/locking/spinlock.c:303 save_stack+0x43/0xd0 mm/kasan/kasan.c:495 [] queued_write_lock include/asm-generic/qrwlock.h:134 [inline] [] do_raw_write_lock+0xc7/0x1d0 kernel/locking/spinlock_debug.c:203 slab_post_alloc_hook mm/slab.h:417 [inline] slab_alloc_node mm/slub.c:2715 [inline] slab_alloc mm/slub.c:2723 [inline] kmem_cache_alloc+0xba/0x290 mm/slub.c:2728 fasync_free_rcu+0x1d/0x20 fs/fcntl.c:563 [] SYSC_readv fs/read_write.c:1011 [inline] [] SyS_readv+0x27/0x30 fs/read_write.c:1008 [] sg_remove_request+0x70/0x120 drivers/scsi/sg.c:2122 save_stack_trace+0x16/0x20 arch/x86/kernel/stacktrace.c:57 SYSC_ioctl fs/ioctl.c:694 [inline] SyS_ioctl+0x8f/0xc0 fs/ioctl.c:685 ^ [] entry_SYSCALL_64_fastpath+0x23/0xc6 [] kasan_report mm/kasan/report.c:329 [inline] [] __asan_report_load4_noabort+0x29/0x30 mm/kasan/report.c:329 Object at ffff8801ca361e80, in cache fasync_cache size: 96 set_track mm/kasan/kasan.c:507 [inline] kasan_kmalloc+0xad/0xe0 mm/kasan/kasan.c:598 ================================================================== [] SYSC_readv fs/read_write.c:1011 [inline] [] SyS_readv+0x27/0x30 fs/read_write.c:1008 Read of size 4 by task syz-executor0/10501 set_track mm/kasan/kasan.c:507 [inline] kasan_slab_free+0x73/0xc0 mm/kasan/kasan.c:571 ffff8801ca361d80: fb fb fb fb fb fb fb fb fb fb fb fb fc fc fc fc [] do_loop_readv_writev fs/read_write.c:880 [inline] [] do_readv_writev+0x520/0x750 fs/read_write.c:874 Allocated: BUG: KASAN: slab-out-of-bounds in __read_once_size include/linux/compiler.h:243 [inline] at addr ffff8801ca361ee4 BUG: KASAN: slab-out-of-bounds in atomic_read arch/x86/include/asm/atomic.h:26 [inline] at addr ffff8801ca361ee4 BUG: KASAN: slab-out-of-bounds in virt_spin_lock arch/x86/include/asm/qspinlock.h:56 [inline] at addr ffff8801ca361ee4 BUG: KASAN: slab-out-of-bounds in native_queued_spin_lock_slowpath+0x6a1/0x6c0 kernel/locking/qspinlock.c:421 at addr ffff8801ca361ee4 save_stack+0x43/0xd0 mm/kasan/kasan.c:495 slab_post_alloc_hook mm/slab.h:417 [inline] slab_alloc_node mm/slub.c:2715 [inline] slab_alloc mm/slub.c:2723 [inline] kmem_cache_alloc+0xba/0x290 mm/slub.c:2728 [] pv_queued_spin_lock_slowpath arch/x86/include/asm/paravirt.h:663 [inline] [] queued_spin_lock_slowpath arch/x86/include/asm/qspinlock.h:28 [inline] [] queued_spin_lock include/asm-generic/qspinlock.h:103 [inline] [] queued_write_lock_slowpath+0x116/0x150 kernel/locking/qrwlock.c:115 kasan_slab_alloc+0x12/0x20 mm/kasan/kasan.c:537 [] entry_SYSCALL_64_fastpath+0x23/0xc6 ffff8801ca361e00: fb fb fb fb fb fb fb fb fb fb fb fb fc fc fc fc [] sg_finish_rem_req+0x295/0x340 drivers/scsi/sg.c:1838 >ffff8801ca361e80: 00 00 00 00 00 00 00 00 00 00 00 00 fc fc fc fc [] entry_SYSCALL_64_fastpath+0x23/0xc6 >ffff8801ca361e80: 00 00 00 00 00 00 00 00 00 00 00 00 fc fc fc fc [] do_readv+0xe6/0x250 fs/read_write.c:924 [] pv_queued_spin_lock_slowpath arch/x86/include/asm/paravirt.h:663 [inline] [] queued_spin_lock_slowpath arch/x86/include/asm/qspinlock.h:28 [inline] [] queued_spin_lock include/asm-generic/qspinlock.h:103 [inline] [] queued_write_lock_slowpath+0x116/0x150 kernel/locking/qrwlock.c:115 Allocated: Call Trace: Read of size 4 by task syz-executor0/10501 ioctl_fioasync fs/ioctl.c:534 [inline] do_vfs_ioctl+0x2d8/0x1140 fs/ioctl.c:639 [] entry_SYSCALL_64_fastpath+0x23/0xc6 Allocated: ^ [] SYSC_readv fs/read_write.c:1011 [inline] [] SyS_readv+0x27/0x30 fs/read_write.c:1008 [] sg_remove_request+0x70/0x120 drivers/scsi/sg.c:2122 [] queued_write_lock include/asm-generic/qrwlock.h:134 [inline] [] do_raw_write_lock+0xc7/0x1d0 kernel/locking/spinlock_debug.c:203 Object at ffff8801ca361e80, in cache fasync_cache size: 96 Allocated: Call Trace: slab_post_alloc_hook mm/slab.h:417 [inline] slab_alloc_node mm/slub.c:2715 [inline] slab_alloc mm/slub.c:2723 [inline] kmem_cache_alloc+0xba/0x290 mm/slub.c:2728 [] SYSC_readv fs/read_write.c:1011 [inline] [] SyS_readv+0x27/0x30 fs/read_write.c:1008 PID = 10501 [] do_loop_readv_writev fs/read_write.c:880 [inline] [] do_readv_writev+0x520/0x750 fs/read_write.c:874 [] vfs_readv+0x84/0xc0 fs/read_write.c:898 [] queued_write_lock include/asm-generic/qrwlock.h:134 [inline] [] do_raw_write_lock+0xc7/0x1d0 kernel/locking/spinlock_debug.c:203 sg_fasync+0x86/0xb0 drivers/scsi/sg.c:1203 CPU: 0 PID: 10501 Comm: syz-executor0 Tainted: G B 4.9.67-gf26d3c7 #106 Read of size 4 by task syz-executor0/10501 slab_post_alloc_hook mm/slab.h:417 [inline] slab_alloc_node mm/slub.c:2715 [inline] slab_alloc mm/slub.c:2723 [inline] kmem_cache_alloc+0xba/0x290 mm/slub.c:2728 ffff8801ca361ee0 ffffed003946c3dc ffff8801ca361ee4 ffff8801c9d6f8d8 Read of size 4 by task syz-executor0/10501 __rcu_reclaim kernel/rcu/rcu.h:118 [inline] rcu_do_batch kernel/rcu/tree.c:2789 [inline] invoke_rcu_callbacks kernel/rcu/tree.c:3053 [inline] __rcu_process_callbacks kernel/rcu/tree.c:3020 [inline] rcu_process_callbacks+0x871/0x12c0 kernel/rcu/tree.c:3037 [] __read_once_size include/linux/compiler.h:243 [inline] [] atomic_read arch/x86/include/asm/atomic.h:26 [inline] [