general protection fault, probably for non-canonical address 0xdffffc000000003d: 0000 [#1] PREEMPT SMP KASAN KASAN: null-ptr-deref in range [0x00000000000001e8-0x00000000000001ef] CPU: 2 PID: 3675 Comm: syz-fuzzer Not tainted 5.19.0-rc1-syzkaller-00003-ge71e60cd74df #0 Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.14.0-2 04/01/2014 RIP: 0010:__lock_acquire+0xd85/0x5660 kernel/locking/lockdep.c:4923 Code: 76 0e 41 be 01 00 00 00 0f 86 c8 00 00 00 89 05 81 da 76 0e e9 bd 00 00 00 48 b8 00 00 00 00 00 fc ff df 48 89 da 48 c1 ea 03 <80> 3c 02 00 0f 85 1e 2d 00 00 48 81 3b e0 03 2b 8f 0f 84 4f f3 ff RSP: 0000:ffffc90002d86aa8 EFLAGS: 00010002 RAX: dffffc0000000000 RBX: 00000000000001e8 RCX: 0000000000000000 RDX: 000000000000003d RSI: 0000000000000000 RDI: 00000000000001e8 RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000001 R10: 0000000000000000 R11: 0000000000000001 R12: 0000000000000000 R13: ffff888015c4c080 R14: 0000000000000000 R15: 0000000000000000 FS: 000000c000080090(0000) GS:ffff88802ca00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000402794 CR3: 0000000026785000 CR4: 0000000000150ee0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: lock_acquire kernel/locking/lockdep.c:5665 [inline] lock_acquire+0x1ab/0x570 kernel/locking/lockdep.c:5630 __raw_spin_lock include/linux/spinlock_api_smp.h:133 [inline] _raw_spin_lock+0x2a/0x40 kernel/locking/spinlock.c:154 spin_lock include/linux/spinlock.h:349 [inline] detach_extent_buffer_page+0x7e7/0x1280 fs/btrfs/extent_io.c:5835 btrfs_release_extent_buffer_pages+0xd3/0x3a0 fs/btrfs/extent_io.c:5904 release_extent_buffer+0x227/0x2a0 fs/btrfs/extent_io.c:6389 try_release_extent_buffer+0x9ec/0xbe0 fs/btrfs/extent_io.c:7460 btree_release_folio+0xbe/0x100 fs/btrfs/disk-io.c:1004 filemap_release_folio+0x13b/0x1a0 mm/filemap.c:3964 shrink_page_list+0x2697/0x3a50 mm/vmscan.c:1878 shrink_inactive_list mm/vmscan.c:2386 [inline] shrink_list mm/vmscan.c:2616 [inline] shrink_lruvec+0xccf/0x2620 mm/vmscan.c:2933 shrink_node_memcgs mm/vmscan.c:3122 [inline] shrink_node+0x84a/0x1db0 mm/vmscan.c:3245 shrink_zones mm/vmscan.c:3482 [inline] do_try_to_free_pages+0x3b5/0x1700 mm/vmscan.c:3540 try_to_free_pages+0x2ac/0x840 mm/vmscan.c:3775 __perform_reclaim mm/page_alloc.c:4641 [inline] __alloc_pages_direct_reclaim mm/page_alloc.c:4663 [inline] __alloc_pages_slowpath.constprop.0+0xa8a/0x2160 mm/page_alloc.c:5066 __alloc_pages+0x436/0x510 mm/page_alloc.c:5439 alloc_pages+0x1aa/0x310 mm/mempolicy.c:2272 folio_alloc+0x1c/0x70 mm/mempolicy.c:2282 filemap_alloc_folio+0x8e/0xb0 mm/filemap.c:996 page_cache_ra_unbounded+0x1af/0x550 mm/readahead.c:240 do_page_cache_ra mm/readahead.c:291 [inline] page_cache_ra_order+0x680/0x940 mm/readahead.c:546 do_sync_mmap_readahead mm/filemap.c:3046 [inline] filemap_fault+0x1638/0x2550 mm/filemap.c:3138 __do_fault+0x10d/0x650 mm/memory.c:4165 do_read_fault mm/memory.c:4511 [inline] do_fault mm/memory.c:4640 [inline] handle_pte_fault mm/memory.c:4903 [inline] __handle_mm_fault+0x2739/0x3f50 mm/memory.c:5042 handle_mm_fault+0x1c8/0x790 mm/memory.c:5140 do_user_addr_fault+0x489/0x11c0 arch/x86/mm/fault.c:1397 handle_page_fault arch/x86/mm/fault.c:1484 [inline] exc_page_fault+0x9e/0x180 arch/x86/mm/fault.c:1540 asm_exc_page_fault+0x27/0x30 arch/x86/include/asm/idtentry.h:570 RIP: 0033:0x402794 Code: fd d7 d6 48 83 c6 40 48 83 c7 40 48 83 eb 40 81 fa ff ff ff ff 74 c4 c5 f8 77 48 31 c0 c3 c5 f8 77 48 83 fb 08 76 1b 48 8b 0e <48> 8b 17 48 83 c6 08 48 83 c7 08 48 83 eb 08 48 39 d1 74 e3 48 31 RSP: 002b:000000c00008b870 EFLAGS: 00010216 RAX: 00000000008cd601 RBX: 0000000000000011 RCX: 70702a282e746d66 RDX: 2e656d69746e7572 RSI: 00000000008cd601 RDI: 00000000006f0620 RBP: 000000c00008b8e0 R08: 00000000000000cb R09: 00000000004c55d7 R10: 0000000000000002 R11: 0000000000000001 R12: 00000000004c5590 R13: 0000000000051208 R14: 000000c000082000 R15: 000000c00aa62c00 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:__lock_acquire+0xd85/0x5660 kernel/locking/lockdep.c:4923 Code: 76 0e 41 be 01 00 00 00 0f 86 c8 00 00 00 89 05 81 da 76 0e e9 bd 00 00 00 48 b8 00 00 00 00 00 fc ff df 48 89 da 48 c1 ea 03 <80> 3c 02 00 0f 85 1e 2d 00 00 48 81 3b e0 03 2b 8f 0f 84 4f f3 ff RSP: 0000:ffffc90002d86aa8 EFLAGS: 00010002 RAX: dffffc0000000000 RBX: 00000000000001e8 RCX: 0000000000000000 RDX: 000000000000003d RSI: 0000000000000000 RDI: 00000000000001e8 RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000001 R10: 0000000000000000 R11: 0000000000000001 R12: 0000000000000000 R13: ffff888015c4c080 R14: 0000000000000000 R15: 0000000000000000 FS: 000000c000080090(0000) GS:ffff88802ca00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000402794 CR3: 0000000026785000 CR4: 0000000000150ee0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess): 0: 76 0e jbe 0x10 2: 41 be 01 00 00 00 mov $0x1,%r14d 8: 0f 86 c8 00 00 00 jbe 0xd6 e: 89 05 81 da 76 0e mov %eax,0xe76da81(%rip) # 0xe76da95 14: e9 bd 00 00 00 jmpq 0xd6 19: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax 20: fc ff df 23: 48 89 da mov %rbx,%rdx 26: 48 c1 ea 03 shr $0x3,%rdx * 2a: 80 3c 02 00 cmpb $0x0,(%rdx,%rax,1) <-- trapping instruction 2e: 0f 85 1e 2d 00 00 jne 0x2d52 34: 48 81 3b e0 03 2b 8f cmpq $0xffffffff8f2b03e0,(%rbx) 3b: 0f .byte 0xf 3c: 84 4f f3 test %cl,-0xd(%rdi) 3f: ff .byte 0xff