Hello, syzbot found the following issue on: HEAD commit: 7e364e56293b Linux 6.3-rc5 git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=1666b8f1c80000 kernel config: https://syzkaller.appspot.com/x/.config?x=d9a438ce47536f0c dashboard link: https://syzkaller.appspot.com/bug?extid=d015b6c2fbb5c383bf08 compiler: Debian clang version 15.0.7, GNU ld (GNU Binutils for Debian) 2.35.2 Unfortunately, I don't have any reproducer for this issue yet. Downloadable assets: disk image: https://storage.googleapis.com/syzbot-assets/54c56bddacf4/disk-7e364e56.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/447e5d1af596/vmlinux-7e364e56.xz kernel image: https://storage.googleapis.com/syzbot-assets/3e2d1545e7be/bzImage-7e364e56.xz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+d015b6c2fbb5c383bf08@xxxxxxxxxxxxxxxxxxxxxxxxx general protection fault, probably for non-canonical address 0xdffffc0000000009: 0000 [#1] PREEMPT SMP KASAN KASAN: null-ptr-deref in range [0x0000000000000048-0x000000000000004f] CPU: 1 PID: 17900 Comm: syz-executor.4 Not tainted 6.3.0-rc5-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/02/2023 RIP: 0010:__lock_acquire+0x69/0x1f80 kernel/locking/lockdep.c:4926 Code: df 0f b6 04 10 84 c0 0f 85 fb 15 00 00 83 3d 41 b7 e9 0c 00 0f 84 a8 14 00 00 83 3d d0 29 75 0b 00 74 2b 4c 89 f0 48 c1 e8 03 <80> 3c 10 00 74 12 4c 89 f7 e8 29 04 76 00 48 ba 00 00 00 00 00 fc RSP: 0018:ffffc900167a7b00 EFLAGS: 00010006 RAX: 0000000000000009 RBX: 0000000000000000 RCX: 0000000000000000 RDX: dffffc0000000000 RSI: 0000000000000000 RDI: 0000000000000048 RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000000 R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000000000000 R13: ffff88802b86ba80 R14: 0000000000000048 R15: 0000000000000001 FS: 00007f37ad035700(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f37ad014718 CR3: 00000000912ec000 CR4: 00000000003506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: <TASK> lock_acquire+0x1e1/0x520 kernel/locking/lockdep.c:5669 __raw_write_lock include/linux/rwlock_api_smp.h:209 [inline] _raw_write_lock+0x2e/0x40 kernel/locking/spinlock.c:300 __drop_extent_tree+0x3ac/0x660 fs/f2fs/extent_cache.c:1192 f2fs_drop_extent_tree+0x17/0x30 fs/f2fs/extent_cache.c:1208 f2fs_insert_range+0x2d5/0x3c0 fs/f2fs/file.c:1664 f2fs_fallocate+0x4e4/0x6d0 fs/f2fs/file.c:1838 vfs_fallocate+0x54b/0x6b0 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+0xbd/0x100 fs/open.c:353 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7f37ac28c0f9 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 f1 19 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:00007f37ad035168 EFLAGS: 00000246 ORIG_RAX: 000000000000011d RAX: ffffffffffffffda RBX: 00007f37ac3ac120 RCX: 00007f37ac28c0f9 RDX: 0000000000000000 RSI: 0000000000000020 RDI: 0000000000000005 RBP: 00007f37ac2e7b39 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000ff8000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fff1081525f R14: 00007f37ad035300 R15: 0000000000022000 </TASK> Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:__lock_acquire+0x69/0x1f80 kernel/locking/lockdep.c:4926 Code: df 0f b6 04 10 84 c0 0f 85 fb 15 00 00 83 3d 41 b7 e9 0c 00 0f 84 a8 14 00 00 83 3d d0 29 75 0b 00 74 2b 4c 89 f0 48 c1 e8 03 <80> 3c 10 00 74 12 4c 89 f7 e8 29 04 76 00 48 ba 00 00 00 00 00 fc RSP: 0018:ffffc900167a7b00 EFLAGS: 00010006 RAX: 0000000000000009 RBX: 0000000000000000 RCX: 0000000000000000 RDX: dffffc0000000000 RSI: 0000000000000000 RDI: 0000000000000048 RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000000 R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000000000000 R13: ffff88802b86ba80 R14: 0000000000000048 R15: 0000000000000001 FS: 00007f37ad035700(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f37ad014718 CR3: 00000000912ec000 CR4: 00000000003506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess): 0: df 0f fisttps (%rdi) 2: b6 04 mov $0x4,%dh 4: 10 84 c0 0f 85 fb 15 adc %al,0x15fb850f(%rax,%rax,8) b: 00 00 add %al,(%rax) d: 83 3d 41 b7 e9 0c 00 cmpl $0x0,0xce9b741(%rip) # 0xce9b755 14: 0f 84 a8 14 00 00 je 0x14c2 1a: 83 3d d0 29 75 0b 00 cmpl $0x0,0xb7529d0(%rip) # 0xb7529f1 21: 74 2b je 0x4e 23: 4c 89 f0 mov %r14,%rax 26: 48 c1 e8 03 shr $0x3,%rax * 2a: 80 3c 10 00 cmpb $0x0,(%rax,%rdx,1) <-- trapping instruction 2e: 74 12 je 0x42 30: 4c 89 f7 mov %r14,%rdi 33: e8 29 04 76 00 callq 0x760461 38: 48 rex.W 39: ba 00 00 00 00 mov $0x0,%edx 3e: 00 fc add %bh,%ah --- This report is generated by a bot. 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