Hello, syzbot found the following issue on: HEAD commit: a92b7d26c743 Merge tag 'drm-fixes-2023-06-23' of git://ano.. git tree: upstream console+strace: https://syzkaller.appspot.com/x/log.txt?x=107e3e50a80000 kernel config: https://syzkaller.appspot.com/x/.config?x=2cbd298d0aff1140 dashboard link: https://syzkaller.appspot.com/bug?extid=f4649be1be739e030111 compiler: gcc (Debian 10.2.1-6) 10.2.1 20210110, GNU ld (GNU Binutils for Debian) 2.35.2 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=1564afb0a80000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=166928c7280000 Downloadable assets: disk image: https://storage.googleapis.com/syzbot-assets/53d1be238f30/disk-a92b7d26.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/04748ac79920/vmlinux-a92b7d26.xz kernel image: https://storage.googleapis.com/syzbot-assets/78634d05a96b/bzImage-a92b7d26.xz mounted in repro: https://storage.googleapis.com/syzbot-assets/dcc03ca9e012/mount_0.gz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+f4649be1be739e030111@xxxxxxxxxxxxxxxxxxxxxxxxx general protection fault, probably for non-canonical address 0xdffffc0000000009: 0000 [#1] PREEMPT SMP KASAN KASAN: null-ptr-deref in range [0x0000000000000048-0x000000000000004f] CPU: 0 PID: 5015 Comm: syz-executor425 Not tainted 6.4.0-rc7-syzkaller-00226-ga92b7d26c743 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/27/2023 RIP: 0010:__lock_acquire+0xe01/0x5f30 kernel/locking/lockdep.c:4956 Code: 00 00 3b 05 01 b0 59 0f 0f 87 7a 09 00 00 41 be 01 00 00 00 e9 84 00 00 00 48 b8 00 00 00 00 00 fc ff df 4c 89 e2 48 c1 ea 03 <80> 3c 02 00 0f 85 9e 33 00 00 49 81 3c 24 20 38 16 90 0f 84 cd f2 RSP: 0018:ffffc90003b6f9d8 EFLAGS: 00010016 RAX: dffffc0000000000 RBX: 1ffff9200076df6c RCX: 0000000000000000 RDX: 0000000000000009 RSI: 0000000000000000 RDI: 0000000000000048 RBP: ffff88802834d940 R08: 0000000000000001 R09: 0000000000000000 R10: 0000000000000001 R11: 0000000000000001 R12: 0000000000000048 R13: 0000000000000000 R14: 0000000000000048 R15: 0000000000000000 FS: 00007f2b8ef07700(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f2b8efac0c8 CR3: 00000000235f8000 CR4: 0000000000350ef0 Call Trace: <TASK> lock_acquire kernel/locking/lockdep.c:5705 [inline] lock_acquire+0x1b1/0x520 kernel/locking/lockdep.c:5670 __raw_write_lock include/linux/rwlock_api_smp.h:209 [inline] _raw_write_lock+0x2e/0x40 kernel/locking/spinlock.c:300 __drop_extent_tree fs/f2fs/extent_cache.c:1100 [inline] f2fs_drop_extent_tree+0xf0/0x3a0 fs/f2fs/extent_cache.c:1116 f2fs_insert_range fs/f2fs/file.c:1664 [inline] f2fs_fallocate+0xce5/0x36d0 fs/f2fs/file.c:1838 vfs_fallocate+0x48b/0xe40 fs/open.c:324 ksys_fallocate fs/open.c:347 [inline] __do_sys_fallocate fs/open.c:355 [inline] __se_sys_fallocate fs/open.c:353 [inline] __x64_sys_fallocate+0xd3/0x140 fs/open.c:353 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x39/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7f2b8ef5b459 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 41 15 00 00 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 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f2b8ef072f8 EFLAGS: 00000246 ORIG_RAX: 000000000000011d RAX: ffffffffffffffda RBX: 00007f2b8efe57a0 RCX: 00007f2b8ef5b459 RDX: 0000000000000000 RSI: 0000000000000020 RDI: 0000000000000005 RBP: 00007f2b8efb27f8 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000010000 R11: 0000000000000246 R12: 00007f2b8efb26c0 R13: 0030656c69662f2e R14: 4b55cd3db08b6c4e R15: 00007f2b8efe57a8 </TASK> Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:__lock_acquire+0xe01/0x5f30 kernel/locking/lockdep.c:4956 Code: 00 00 3b 05 01 b0 59 0f 0f 87 7a 09 00 00 41 be 01 00 00 00 e9 84 00 00 00 48 b8 00 00 00 00 00 fc ff df 4c 89 e2 48 c1 ea 03 <80> 3c 02 00 0f 85 9e 33 00 00 49 81 3c 24 20 38 16 90 0f 84 cd f2 RSP: 0018:ffffc90003b6f9d8 EFLAGS: 00010016 RAX: dffffc0000000000 RBX: 1ffff9200076df6c RCX: 0000000000000000 RDX: 0000000000000009 RSI: 0000000000000000 RDI: 0000000000000048 RBP: ffff88802834d940 R08: 0000000000000001 R09: 0000000000000000 R10: 0000000000000001 R11: 0000000000000001 R12: 0000000000000048 R13: 0000000000000000 R14: 0000000000000048 R15: 0000000000000000 FS: 00007f2b8ef07700(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f2b8efac0c8 CR3: 00000000235f8000 CR4: 0000000000350ef0 ---------------- Code disassembly (best guess): 0: 00 00 add %al,(%rax) 2: 3b 05 01 b0 59 0f cmp 0xf59b001(%rip),%eax # 0xf59b009 8: 0f 87 7a 09 00 00 ja 0x988 e: 41 be 01 00 00 00 mov $0x1,%r14d 14: e9 84 00 00 00 jmpq 0x9d 19: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax 20: fc ff df 23: 4c 89 e2 mov %r12,%rdx 26: 48 c1 ea 03 shr $0x3,%rdx * 2a: 80 3c 02 00 cmpb $0x0,(%rdx,%rax,1) <-- trapping instruction 2e: 0f 85 9e 33 00 00 jne 0x33d2 34: 49 81 3c 24 20 38 16 cmpq $0xffffffff90163820,(%r12) 3b: 90 3c: 0f .byte 0xf 3d: 84 cd test %cl,%ch 3f: f2 repnz --- This report is generated by a bot. It may contain errors. See https://goo.gl/tpsmEJ for more information about syzbot. syzbot engineers can be reached at syzkaller@xxxxxxxxxxxxxxxx. syzbot will keep track of this issue. See: https://goo.gl/tpsmEJ#status for how to communicate with syzbot. If the bug is already fixed, let syzbot know by replying with: #syz fix: exact-commit-title If you want syzbot to run the reproducer, reply with: #syz test: git://repo/address.git branch-or-commit-hash If you attach or paste a git patch, syzbot will apply it before testing. If you want to change bug's subsystems, reply with: #syz set subsystems: new-subsystem (See the list of subsystem names on the web dashboard) If the bug is a duplicate of another bug, reply with: #syz dup: exact-subject-of-another-report If you want to undo deduplication, reply with: #syz undup
