F2FS-fs (loop0): Mounted with checkpoint version = 48b305e5 general protection fault, probably for non-canonical address 0xdffffc0000000000: 0000 [#1] PREEMPT SMP KASAN KASAN: null-ptr-deref in range [0x0000000000000000-0x0000000000000007] CPU: 0 PID: 5020 Comm: syz.0.16 Not tainted 6.1.123-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 RIP: 0010:f2fs_test_and_set_bit fs/f2fs/f2fs.h:2927 [inline] RIP: 0010:update_sit_entry+0x67f/0x10d0 fs/f2fs/segment.c:2227 Code: 24 30 48 8d 5c 08 20 48 89 d8 48 c1 e8 03 42 80 3c 38 00 74 08 48 89 df e8 3e 44 04 fe 4c 8b 33 4d 01 ee 4c 89 f3 48 c1 eb 03 <42> 0f b6 04 3b 84 c0 4d 89 fd 0f 85 8a 08 00 00 41 0f b6 2e 41 89 RSP: 0018:ffffc90003366a70 EFLAGS: 00010246 RAX: 1ffff1100b609e88 RBX: 0000000000000000 RCX: 0000000000000420 RDX: ffff88807fbb0000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: 0000000000000060 R08: ffffffff83ddea38 R09: ffffffff83dde58a R10: 0000000000000003 R11: ffff88807fbb0000 R12: 0000000000000001 R13: 0000000000000003 R14: 0000000000000003 R15: dffffc0000000000 FS: 00007f00a90826c0(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00005578f2c8b5b8 CR3: 000000007682e000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: f2fs_allocate_data_block+0x149a/0x3310 fs/f2fs/segment.c:3275 do_write_page+0x172/0x6e0 fs/f2fs/segment.c:3363 f2fs_do_write_node_page+0xec/0x1a0 fs/f2fs/segment.c:3416 __write_node_page+0xc36/0x2600 fs/f2fs/node.c:1665 f2fs_fsync_node_pages+0x17c0/0x22d0 fs/f2fs/node.c:1818 f2fs_do_sync_file+0x157e/0x1cf0 fs/f2fs/file.c:343 generic_write_sync include/linux/fs.h:2962 [inline] iomap_dio_complete+0x64e/0x7d0 fs/iomap/direct-io.c:130 f2fs_dio_write_iter fs/f2fs/file.c:4735 [inline] f2fs_file_write_iter+0x1344/0x2490 fs/f2fs/file.c:4839 do_iter_write+0x6e6/0xc40 fs/read_write.c:861 iter_file_splice_write+0x830/0xfc0 fs/splice.c:685 do_splice_from fs/splice.c:763 [inline] direct_splice_actor+0xe3/0x1c0 fs/splice.c:950 splice_direct_to_actor+0x4c7/0xc30 fs/splice.c:896 do_splice_direct+0x2a5/0x3e0 fs/splice.c:1002 do_sendfile+0x619/0xff0 fs/read_write.c:1255 __do_sys_sendfile64 fs/read_write.c:1323 [inline] __se_sys_sendfile64+0x178/0x1e0 fs/read_write.c:1309 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:81 entry_SYSCALL_64_after_hwframe+0x68/0xd2 RIP: 0033:0x7f00a8185d29 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 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 a8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f00a9082038 EFLAGS: 00000246 ORIG_RAX: 0000000000000028 RAX: ffffffffffffffda RBX: 00007f00a8375fa0 RCX: 00007f00a8185d29 RDX: 0000000000000000 RSI: 0000000000000005 RDI: 0000000000000006 RBP: 00007f00a8201b08 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000080000002 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007f00a8375fa0 R15: 00007ffe178d8268 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:f2fs_test_and_set_bit fs/f2fs/f2fs.h:2927 [inline] RIP: 0010:update_sit_entry+0x67f/0x10d0 fs/f2fs/segment.c:2227 Code: 24 30 48 8d 5c 08 20 48 89 d8 48 c1 e8 03 42 80 3c 38 00 74 08 48 89 df e8 3e 44 04 fe 4c 8b 33 4d 01 ee 4c 89 f3 48 c1 eb 03 <42> 0f b6 04 3b 84 c0 4d 89 fd 0f 85 8a 08 00 00 41 0f b6 2e 41 89 RSP: 0018:ffffc90003366a70 EFLAGS: 00010246 RAX: 1ffff1100b609e88 RBX: 0000000000000000 RCX: 0000000000000420 RDX: ffff88807fbb0000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: 0000000000000060 R08: ffffffff83ddea38 R09: ffffffff83dde58a R10: 0000000000000003 R11: ffff88807fbb0000 R12: 0000000000000001 R13: 0000000000000003 R14: 0000000000000003 R15: dffffc0000000000 FS: 00007f00a90826c0(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00005578f2c8b5b8 CR3: 000000007682e000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess): 0: 24 30 and $0x30,%al 2: 48 8d 5c 08 20 lea 0x20(%rax,%rcx,1),%rbx 7: 48 89 d8 mov %rbx,%rax a: 48 c1 e8 03 shr $0x3,%rax e: 42 80 3c 38 00 cmpb $0x0,(%rax,%r15,1) 13: 74 08 je 0x1d 15: 48 89 df mov %rbx,%rdi 18: e8 3e 44 04 fe call 0xfe04445b 1d: 4c 8b 33 mov (%rbx),%r14 20: 4d 01 ee add %r13,%r14 23: 4c 89 f3 mov %r14,%rbx 26: 48 c1 eb 03 shr $0x3,%rbx * 2a: 42 0f b6 04 3b movzbl (%rbx,%r15,1),%eax <-- trapping instruction 2f: 84 c0 test %al,%al 31: 4d 89 fd mov %r15,%r13 34: 0f 85 8a 08 00 00 jne 0x8c4 3a: 41 0f b6 2e movzbl (%r14),%ebp 3e: 41 rex.B 3f: 89 .byte 0x89