general protection fault, probably for non-canonical address 0xdffffc000000002a: 0000 [#1] PREEMPT SMP KASAN KASAN: null-ptr-deref in range [0x0000000000000150-0x0000000000000157] CPU: 1 PID: 10005 Comm: syz-fuzzer Not tainted 5.13.0-rc6-syzkaller #0 Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.14.0-2 04/01/2014 RIP: 0010:__lock_acquire+0xcf0/0x5230 kernel/locking/lockdep.c:4772 Code: 3d 0e 41 bf 01 00 00 00 0f 86 8c 00 00 00 89 05 06 49 3d 0e e9 81 00 00 00 48 b8 00 00 00 00 00 fc ff df 4c 89 f2 48 c1 ea 03 <80> 3c 02 00 0f 85 82 2f 00 00 49 81 3e c0 b3 42 8f 0f 84 da f3 ff RSP: 0000:ffffc9000d27e9e0 EFLAGS: 00010002 RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 0000000000000000 RDX: 000000000000002a RSI: 0000000000000001 RDI: 0000000000000001 RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000000 R10: fffffbfff1b92d2a R11: 0000000000000000 R12: ffff888017401c40 R13: 0000000000000000 R14: 0000000000000150 R15: 0000000000000000 FS: 000000c013afc090(0000) GS:ffff88802cb00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00000000009a67f0 CR3: 000000001b446000 CR4: 0000000000150ee0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: lock_acquire kernel/locking/lockdep.c:5512 [inline] lock_acquire+0x1ab/0x740 kernel/locking/lockdep.c:5477 __raw_spin_lock include/linux/spinlock_api_smp.h:142 [inline] _raw_spin_lock+0x2a/0x40 kernel/locking/spinlock.c:151 spin_lock include/linux/spinlock.h:354 [inline] detach_extent_buffer_page+0x402/0xd20 fs/btrfs/extent_io.c:5446 btrfs_release_extent_buffer_pages+0xf1/0x320 fs/btrfs/extent_io.c:5515 release_extent_buffer+0x242/0x2b0 fs/btrfs/extent_io.c:5985 try_release_extent_buffer+0x706/0x900 fs/btrfs/extent_io.c:7032 btree_releasepage+0x1fe/0x310 fs/btrfs/disk-io.c:1023 try_to_release_page+0x27b/0x3e0 mm/filemap.c:3856 shrink_page_list+0x3cb6/0x6060 mm/vmscan.c:1599 shrink_inactive_list+0x347/0xca0 mm/vmscan.c:2145 shrink_list mm/vmscan.c:2367 [inline] shrink_lruvec+0x7f9/0x14f0 mm/vmscan.c:2662 shrink_node_memcgs mm/vmscan.c:2850 [inline] shrink_node+0x868/0x1de0 mm/vmscan.c:2967 shrink_zones mm/vmscan.c:3170 [inline] do_try_to_free_pages+0x388/0x14b0 mm/vmscan.c:3225 try_to_free_pages+0x29f/0x750 mm/vmscan.c:3464 __perform_reclaim mm/page_alloc.c:4430 [inline] __alloc_pages_direct_reclaim mm/page_alloc.c:4451 [inline] __alloc_pages_slowpath.constprop.0+0x84e/0x2140 mm/page_alloc.c:4855 __alloc_pages+0x422/0x500 mm/page_alloc.c:5213 alloc_pages+0x18c/0x2a0 mm/mempolicy.c:2272 __page_cache_alloc mm/filemap.c:1005 [inline] __page_cache_alloc+0x303/0x3a0 mm/filemap.c:990 pagecache_get_page+0x38f/0x18d0 mm/filemap.c:1885 filemap_fault+0x166c/0x25b0 mm/filemap.c:2992 ext4_filemap_fault+0x87/0xc0 fs/ext4/inode.c:6194 __do_fault+0x10d/0x4d0 mm/memory.c:3680 do_read_fault mm/memory.c:3984 [inline] do_fault mm/memory.c:4112 [inline] handle_pte_fault mm/memory.c:4371 [inline] __handle_mm_fault+0x2c5f/0x52c0 mm/memory.c:4506 handle_mm_fault+0x1bc/0x7e0 mm/memory.c:4604 do_user_addr_fault+0x483/0x1210 arch/x86/mm/fault.c:1390 handle_page_fault arch/x86/mm/fault.c:1475 [inline] exc_page_fault+0x9e/0x180 arch/x86/mm/fault.c:1531 asm_exc_page_fault+0x1e/0x30 arch/x86/include/asm/idtentry.h:577 RIP: 0033:0x455709 Code: 24 40 8b 44 24 60 85 c0 7d 1b c7 44 24 70 ff ff ff ff 48 c7 44 24 78 00 00 00 00 48 8b 6c 24 40 48 83 c4 48 c3 48 8b 4c 24 50 <39> 41 20 7e db 48 8d 51 27 48 63 c0 48 8d 04 82 48 8d 40 01 8b 00 RSP: 002b:000000c00d74b848 EFLAGS: 00010246 RAX: 0000000000000000 RBX: 000000000099b3a0 RCX: 0000000000a03f30 RDX: 0000000000495e89 RSI: 0000000000495e89 RDI: 0000000000495f60 RBP: 000000c00d74b888 R08: 00000000000005fe R09: 000000c00038a600 R10: 0000000000000001 R11: 0000000000000001 R12: 0000000000005608 R13: 0000000000000200 R14: 000000000094b641 R15: 0000000000000000 Modules linked in: ---[ end trace c2509809fbde7be8 ]--- RIP: 0010:__lock_acquire+0xcf0/0x5230 kernel/locking/lockdep.c:4772 Code: 3d 0e 41 bf 01 00 00 00 0f 86 8c 00 00 00 89 05 06 49 3d 0e e9 81 00 00 00 48 b8 00 00 00 00 00 fc ff df 4c 89 f2 48 c1 ea 03 <80> 3c 02 00 0f 85 82 2f 00 00 49 81 3e c0 b3 42 8f 0f 84 da f3 ff RSP: 0000:ffffc9000d27e9e0 EFLAGS: 00010002 RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 0000000000000000 RDX: 000000000000002a RSI: 0000000000000001 RDI: 0000000000000001 RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000000 R10: fffffbfff1b92d2a R11: 0000000000000000 R12: ffff888017401c40 R13: 0000000000000000 R14: 0000000000000150 R15: 0000000000000000 FS: 000000c013afc090(0000) GS:ffff88802cb00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00000000009a67f0 CR3: 000000001b446000 CR4: 0000000000150ee0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400