============================= WARNING: suspicious RCU usage 4.17.0-rc2+ #18 Not tainted ----------------------------- include/linux/rcupdate.h:304 Illegal context switch in RCU read-side critical section! other info that might help us debug this: rcu_scheduler_active = 2, debug_locks = 1 2 locks held by syz-executor0/18128: #0: (ptrval) (shrinker_rwsem){++++}, at: shrink_slab.part.39+0xe6/0xf90 mm/vmscan.c:509 #1: (ptrval) (rcu_read_lock){....}, at: list_lru_count_one+0xc4/0x440 mm/list_lru.c:183 stack backtrace: CPU: 0 PID: 18128 Comm: syz-executor0 Not tainted 4.17.0-rc2+ #18 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+0x1b9/0x294 lib/dump_stack.c:113 lockdep_rcu_suspicious+0x14a/0x153 kernel/locking/lockdep.c:4592 rcu_preempt_sleep_check include/linux/rcupdate.h:303 [inline] ___might_sleep+0x26d/0x320 kernel/sched/core.c:6153 __might_sleep+0x95/0x190 kernel/sched/core.c:6141 slab_pre_alloc_hook mm/slab.h:421 [inline] slab_alloc mm/slab.c:3378 [inline] __do_kmalloc mm/slab.c:3716 [inline] __kmalloc+0x2b9/0x760 mm/slab.c:3727 kmalloc_array include/linux/slab.h:631 [inline] kcalloc include/linux/slab.h:642 [inline] numa_crng_init drivers/char/random.c:798 [inline] crng_reseed+0x427/0x920 drivers/char/random.c:923 credit_entropy_bits+0x98d/0xa30 drivers/char/random.c:708 add_interrupt_randomness+0x494/0x860 drivers/char/random.c:1254 handle_irq_event_percpu+0xf9/0x1c0 kernel/irq/handle.c:191 handle_irq_event+0xa7/0x135 kernel/irq/handle.c:206 handle_edge_irq+0x20f/0x870 kernel/irq/chip.c:791 generic_handle_irq_desc include/linux/irqdesc.h:159 [inline] handle_irq+0x18c/0x2e7 arch/x86/kernel/irq_64.c:77 do_IRQ+0x78/0x190 arch/x86/kernel/irq.c:245 common_interrupt+0xf/0xf arch/x86/entry/entry_64.S:642 RIP: 0010:arch_local_irq_restore arch/x86/include/asm/paravirt.h:783 [inline] RIP: 0010:lock_acquire+0x257/0x520 kernel/locking/lockdep.c:3923 RSP: 0018:ffff8801b5617240 EFLAGS: 00000286 ORIG_RAX: ffffffffffffffd9 RAX: dffffc0000000000 RBX: 1ffff10036ac2e4d RCX: 0000000000000000 RDX: 1ffffffff11a315d RSI: ffff8801d76d8a38 RDI: 0000000000000286 RBP: ffff8801b5617330 R08: 0000000000000008 R09: 0000000000000001 R10: ffff8801d76d8a60 R11: ffff8801d76d8200 R12: ffff8801d76d8200 R13: 0000000000000002 R14: 0000000000000000 R15: 0000000000000000 rcu_lock_acquire include/linux/rcupdate.h:246 [inline] rcu_read_lock include/linux/rcupdate.h:632 [inline] __list_lru_count_one mm/list_lru.c:172 [inline] list_lru_count_one+0xfe/0x440 mm/list_lru.c:183 list_lru_shrink_count include/linux/list_lru.h:118 [inline] super_cache_count+0x16b/0x280 fs/super.c:135 do_shrink_slab mm/vmscan.c:374 [inline] shrink_slab.part.39+0x330/0xf90 mm/vmscan.c:531 shrink_slab+0xa1/0xc0 mm/vmscan.c:506 shrink_node+0x4f2/0x1740 mm/vmscan.c:2561 shrink_zones mm/vmscan.c:2794 [inline] do_try_to_free_pages+0x3c9/0x1240 mm/vmscan.c:2856 try_to_free_mem_cgroup_pages+0x475/0xc50 mm/vmscan.c:3146 reclaim_high.constprop.67+0x12f/0x1d0 mm/memcontrol.c:1862 mem_cgroup_handle_over_high+0x8d/0x130 mm/memcontrol.c:1887 tracehook_notify_resume include/linux/tracehook.h:193 [inline] exit_to_usermode_loop+0x274/0x310 arch/x86/entry/common.c:166 prepare_exit_to_usermode+0x32e/0x390 arch/x86/entry/common.c:196 retint_user+0x8/0x18 RIP: 0033:0x40b8d8 RSP: 002b:00007ffd981883d8 EFLAGS: 00010246 RAX: 0000000002680c00 RBX: 00007ffd981883e0 RCX: 00000000007032c0 RDX: 000000000040b710 RSI: 00000000007032b0 RDI: 0000000002680c20 RBP: 00007ffd98188420 R08: 0000000000000001 R09: 0000000002680940 R10: 0000000002680c10 R11: 0000000000000202 R12: 0000000000000001 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000001380 BUG: sleeping function called from invalid context at mm/slab.h:421 in_atomic(): 1, irqs_disabled(): 1, pid: 18128, name: syz-executor0 2 locks held by syz-executor0/18128: #0: (ptrval) (shrinker_rwsem){++++}, at: shrink_slab.part.39+0xe6/0xf90 mm/vmscan.c:509 #1: (ptrval) (rcu_read_lock){....}, at: list_lru_count_one+0xc4/0x440 mm/list_lru.c:183 irq event stamp: 710 hardirqs last enabled at (709): [] free_unref_page_list+0xc9a/0x12c0 mm/page_alloc.c:2849 hardirqs last disabled at (710): [] interrupt_entry+0xb5/0xf0 arch/x86/entry/entry_64.S:625 softirqs last enabled at (652): [] __do_softirq+0x778/0xaf5 kernel/softirq.c:311 softirqs last disabled at (633): [] invoke_softirq kernel/softirq.c:365 [inline] softirqs last disabled at (633): [] irq_exit+0x1d1/0x200 kernel/softirq.c:405 CPU: 0 PID: 18128 Comm: syz-executor0 Not tainted 4.17.0-rc2+ #18 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+0x1b9/0x294 lib/dump_stack.c:113 ___might_sleep.cold.87+0x11f/0x13a kernel/sched/core.c:6188 __might_sleep+0x95/0x190 kernel/sched/core.c:6141 slab_pre_alloc_hook mm/slab.h:421 [inline] slab_alloc mm/slab.c:3378 [inline] __do_kmalloc mm/slab.c:3716 [inline] __kmalloc+0x2b9/0x760 mm/slab.c:3727 kmalloc_array include/linux/slab.h:631 [inline] kcalloc include/linux/slab.h:642 [inline] numa_crng_init drivers/char/random.c:798 [inline] crng_reseed+0x427/0x920 drivers/char/random.c:923 credit_entropy_bits+0x98d/0xa30 drivers/char/random.c:708 add_interrupt_randomness+0x494/0x860 drivers/char/random.c:1254 handle_irq_event_percpu+0xf9/0x1c0 kernel/irq/handle.c:191 handle_irq_event+0xa7/0x135 kernel/irq/handle.c:206 handle_edge_irq+0x20f/0x870 kernel/irq/chip.c:791 generic_handle_irq_desc include/linux/irqdesc.h:159 [inline] handle_irq+0x18c/0x2e7 arch/x86/kernel/irq_64.c:77 do_IRQ+0x78/0x190 arch/x86/kernel/irq.c:245 common_interrupt+0xf/0xf arch/x86/entry/entry_64.S:642 RIP: 0010:arch_local_irq_restore arch/x86/include/asm/paravirt.h:783 [inline] RIP: 0010:lock_acquire+0x257/0x520 kernel/locking/lockdep.c:3923 RSP: 0018:ffff8801b5617240 EFLAGS: 00000286 ORIG_RAX: ffffffffffffffd9 RAX: dffffc0000000000 RBX: 1ffff10036ac2e4d RCX: 0000000000000000 RDX: 1ffffffff11a315d RSI: ffff8801d76d8a38 RDI: 0000000000000286 RBP: ffff8801b5617330 R08: 0000000000000008 R09: 0000000000000001 R10: ffff8801d76d8a60 R11: ffff8801d76d8200 R12: ffff8801d76d8200 R13: 0000000000000002 R14: 0000000000000000 R15: 0000000000000000 rcu_lock_acquire include/linux/rcupdate.h:246 [inline] rcu_read_lock include/linux/rcupdate.h:632 [inline] __list_lru_count_one mm/list_lru.c:172 [inline] list_lru_count_one+0xfe/0x440 mm/list_lru.c:183 list_lru_shrink_count include/linux/list_lru.h:118 [inline] super_cache_count+0x16b/0x280 fs/super.c:135 do_shrink_slab mm/vmscan.c:374 [inline] shrink_slab.part.39+0x330/0xf90 mm/vmscan.c:531 shrink_slab+0xa1/0xc0 mm/vmscan.c:506 shrink_node+0x4f2/0x1740 mm/vmscan.c:2561 shrink_zones mm/vmscan.c:2794 [inline] do_try_to_free_pages+0x3c9/0x1240 mm/vmscan.c:2856 try_to_free_mem_cgroup_pages+0x475/0xc50 mm/vmscan.c:3146 reclaim_high.constprop.67+0x12f/0x1d0 mm/memcontrol.c:1862 mem_cgroup_handle_over_high+0x8d/0x130 mm/memcontrol.c:1887 tracehook_notify_resume include/linux/tracehook.h:193 [inline] exit_to_usermode_loop+0x274/0x310 arch/x86/entry/common.c:166 prepare_exit_to_usermode+0x32e/0x390 arch/x86/entry/common.c:196 retint_user+0x8/0x18 RIP: 0033:0x40b8d8 RSP: 002b:00007ffd981883d8 EFLAGS: 00010246 RAX: 0000000002680c00 RBX: 00007ffd981883e0 RCX: 00000000007032c0 RDX: 000000000040b710 RSI: 00000000007032b0 RDI: 0000000002680c20 RBP: 00007ffd98188420 R08: 0000000000000001 R09: 0000000002680940 R10: 0000000002680c10 R11: 0000000000000202 R12: 0000000000000001 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000001380 random: crng init done BTRFS: device label /gQAxh[?-&`"K& J޳i/Y_z(;Q4Q.Id5kݧJJೀIJW|E(iͻCV#p^ vH؛ , jfm(WZj(-۾H޻z;DMTypIz'|Mqt?hi g)| :墅#+=1Wd*{4H D-Gkog9 devid 10737418240 transid 5 /dev/loop6 BTRFS error (device loop6): superblock checksum mismatch BTRFS error (device loop6): open_ctree failed BTRFS error (device loop6): superblock checksum mismatch BTRFS error (device loop6): open_ctree failed F2FS-fs (loop7): Magic Mismatch, valid(0xf2f52010) - read(0x0) F2FS-fs (loop7): Can't find valid F2FS filesystem in 1th superblock attempt to access beyond end of device loop7: rw=12288, want=8200, limit=20 F2FS-fs (loop7): invalid crc value attempt to access beyond end of device loop7: rw=12288, want=12296, limit=20 F2FS-fs (loop7): invalid crc value F2FS-fs (loop7): Failed to get valid F2FS checkpoint F2FS-fs (loop7): Magic Mismatch, valid(0xf2f52010) - read(0x0) F2FS-fs (loop7): Can't find valid F2FS filesystem in 1th superblock attempt to access beyond end of device loop7: rw=12288, want=8200, limit=20 F2FS-fs (loop7): invalid crc value attempt to access beyond end of device loop7: rw=12288, want=12296, limit=20 F2FS-fs (loop7): invalid crc value F2FS-fs (loop7): Failed to get valid F2FS checkpoint attempt to access beyond end of device loop7: rw=12288, want=8200, limit=20 attempt to access beyond end of device loop7: rw=12288, want=12296, limit=20 attempt to access beyond end of device loop7: rw=12288, want=8200, limit=20 attempt to access beyond end of device loop7: rw=12288, want=12296, limit=20 attempt to access beyond end of device loop7: rw=12288, want=8200, limit=20 attempt to access beyond end of device loop7: rw=12288, want=12296, limit=20 attempt to access beyond end of device loop7: rw=12288, want=8200, limit=20 attempt to access beyond end of device loop7: rw=12288, want=12296, limit=20 BTRFS error (device loop6): superblock checksum mismatch BTRFS error (device loop6): open_ctree failed attempt to access beyond end of device loop7: rw=12288, want=8200, limit=20 attempt to access beyond end of device loop7: rw=12288, want=12296, limit=20 attempt to access beyond end of device loop7: rw=12288, want=8200, limit=20 attempt to access beyond end of device loop7: rw=12288, want=12296, limit=20 BTRFS error (device loop6): superblock checksum mismatch BTRFS error (device loop6): open_ctree failed attempt to access beyond end of device loop7: rw=12288, want=8200, limit=20 attempt to access beyond end of device loop7: rw=12288, want=12296, limit=20 attempt to access beyond end of device loop7: rw=12288, want=8200, limit=20 attempt to access beyond end of device loop7: rw=12288, want=12296, limit=20 BTRFS error (device loop6): superblock checksum mismatch BTRFS error (device loop6): open_ctree failed capability: warning: `syz-executor6' uses deprecated v2 capabilities in a way that may be insecure binder: 18530:18533 got transaction with invalid offset (0, min 0 max 0) or object. binder: 18530:18533 transaction failed 29201/-22, size 0-8 line 3026 binder: BINDER_SET_CONTEXT_MGR already set binder: 18530:18533 ioctl 40046207 0 returned -16 binder: undelivered TRANSACTION_ERROR: 29201 binder: 18540:18542 got transaction with invalid offset (0, min 0 max 0) or object. binder: 18540:18542 transaction failed 29201/-22, size 0-8 line 3026 binder: undelivered TRANSACTION_ERROR: 29201 binder: 18546:18547 got transaction with invalid offset (0, min 0 max 0) or object. binder: 18546:18547 transaction failed 29201/-22, size 0-8 line 3026 binder: undelivered TRANSACTION_ERROR: 29201 binder: 18577:18583 got transaction with invalid offset (0, min 0 max 0) or object. binder: 18577:18583 transaction failed 29201/-22, size 0-8 line 3026 binder: undelivered TRANSACTION_ERROR: 29201