general protection fault, probably for non-canonical address 0xdffffc00000000e6: 0000 [#1] PREEMPT SMP KASAN KASAN: null-ptr-deref in range [0x0000000000000730-0x0000000000000737] CPU: 0 PID: 5450 Comm: syz-executor.0 Not tainted 6.3.0-syzkaller-05651-gfd78b242ba1b #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/14/2023 RIP: 0010:__lock_acquire+0x69/0x2000 kernel/locking/lockdep.c:4942 Code: df 0f b6 04 30 84 c0 0f 85 5a 16 00 00 83 3d c1 51 e9 0c 00 0f 84 02 11 00 00 83 3d f0 89 74 0b 00 74 2b 4c 89 f0 48 c1 e8 03 <80> 3c 30 00 74 12 4c 89 f7 e8 c9 54 76 00 48 be 00 00 00 00 00 fc RSP: 0018:ffffc90005a1faf8 EFLAGS: 00010002 RAX: 00000000000000e6 RBX: 0000000000000000 RCX: 0000000000000000 RDX: 0000000000000000 RSI: dffffc0000000000 RDI: 0000000000000730 RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000000 R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000000000001 R13: 0000000000000000 R14: 0000000000000730 R15: ffff888077f13b80 FS: 00007fc1c2b17700(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000055800180a000 CR3: 00000000706b1000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: lock_acquire+0x1e3/0x520 kernel/locking/lockdep.c:5691 down_write+0x3a/0x50 kernel/locking/rwsem.c:1573 f2fs_down_write fs/f2fs/f2fs.h:2125 [inline] f2fs_quota_on+0x120/0x320 fs/f2fs/super.c:2916 __do_sys_quotactl fs/quota/quota.c:960 [inline] __se_sys_quotactl+0x2b5/0x810 fs/quota/quota.c:916 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: 0033:0x7fc1c1e8c169 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:00007fc1c2b17168 EFLAGS: 00000246 ORIG_RAX: 00000000000000b3 RAX: ffffffffffffffda RBX: 00007fc1c1fac050 RCX: 00007fc1c1e8c169 RDX: 0000000000000000 RSI: 0000000020000080 RDI: ffffffff80000202 RBP: 00007fc1c1ee7ca1 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000020008040 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffd3e2e112f R14: 00007fc1c2b17300 R15: 0000000000022000 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:__lock_acquire+0x69/0x2000 kernel/locking/lockdep.c:4942 Code: df 0f b6 04 30 84 c0 0f 85 5a 16 00 00 83 3d c1 51 e9 0c 00 0f 84 02 11 00 00 83 3d f0 89 74 0b 00 74 2b 4c 89 f0 48 c1 e8 03 <80> 3c 30 00 74 12 4c 89 f7 e8 c9 54 76 00 48 be 00 00 00 00 00 fc RSP: 0018:ffffc90005a1faf8 EFLAGS: 00010002 RAX: 00000000000000e6 RBX: 0000000000000000 RCX: 0000000000000000 RDX: 0000000000000000 RSI: dffffc0000000000 RDI: 0000000000000730 RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000000 R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000000000001 R13: 0000000000000000 R14: 0000000000000730 R15: ffff888077f13b80 FS: 00007fc1c2b17700(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000055800180a000 CR3: 00000000706b1000 CR4: 00000000003506f0 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: 30 84 c0 0f 85 5a 16 xor %al,0x165a850f(%rax,%rax,8) b: 00 00 add %al,(%rax) d: 83 3d c1 51 e9 0c 00 cmpl $0x0,0xce951c1(%rip) # 0xce951d5 14: 0f 84 02 11 00 00 je 0x111c 1a: 83 3d f0 89 74 0b 00 cmpl $0x0,0xb7489f0(%rip) # 0xb748a11 21: 74 2b je 0x4e 23: 4c 89 f0 mov %r14,%rax 26: 48 c1 e8 03 shr $0x3,%rax * 2a: 80 3c 30 00 cmpb $0x0,(%rax,%rsi,1) <-- trapping instruction 2e: 74 12 je 0x42 30: 4c 89 f7 mov %r14,%rdi 33: e8 c9 54 76 00 callq 0x765501 38: 48 rex.W 39: be 00 00 00 00 mov $0x0,%esi 3e: 00 fc add %bh,%ah