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kernel BUG at fs/ext4/inode.c:2844!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
CPU: 0 PID: 16173 Comm: syz.8.3933 Tainted: G        W         5.4.292-syzkaller-00021-gcd8e74fa0fa3 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
RIP: 0010:ext4_writepages+0x2f83/0x2fb0 fs/ext4/inode.c:2843
Code: 0f 94 c6 bf 02 00 00 00 e8 6a 29 a1 ff 84 db 75 2e e8 11 27 a1 ff 49 bc 00 00 00 00 00 fc ff df e9 47 f9 ff ff e8 fd 26 a1 ff <0f> 0b e8 f6 26 a1 ff 0f 0b e8 ef 26 a1 ff e8 ba ef 41 ff eb 9b e8
RSP: 0018:ffff8881c6ea7300 EFLAGS: 00010293
RAX: ffffffff81be57e3 RBX: 0000011410000000 RCX: ffff8881dc129f80
RDX: 0000000000000000 RSI: 0000010000000000 RDI: 0000000000000000
RBP: ffff8881c6ea7650 R08: dffffc0000000000 R09: ffffed1038e3029f
R10: ffffed1038e3029f R11: 1ffff11038e3029e R12: dffffc0000000000
R13: ffff8881c6ea77c0 R14: 0000010000000000 R15: ffff8881c71815c8
FS:  000055558d2a4500(0000) GS:ffff8881f6e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f2b1cb51f98 CR3: 00000001e257e000 CR4: 00000000003406b0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 do_writepages+0x127/0x270 mm/page-writeback.c:2366
 __filemap_fdatawrite_range+0x2bc/0x360 mm/filemap.c:421
 __filemap_fdatawrite mm/filemap.c:429 [inline]
 filemap_flush+0x23/0x30 mm/filemap.c:456
 ext4_alloc_da_blocks+0x7c/0x1f0 fs/ext4/inode.c:3325
 ext4_release_file+0x84/0x320 fs/ext4/file.c:89
 __fput+0x2a3/0x730 fs/file_table.c:281
 ____fput+0x15/0x20 fs/file_table.c:314
 task_work_run+0x146/0x170 kernel/task_work.c:113
 exit_task_work include/linux/task_work.h:22 [inline]
 do_exit+0xa43/0x2660 kernel/exit.c:861
 do_group_exit+0x13e/0x300 kernel/exit.c:984
 get_signal+0xdee/0x13d0 kernel/signal.c:2738
 do_signal+0xad/0xda0 arch/x86/kernel/signal.c:809
 exit_to_usermode_loop+0xc4/0x1b0 arch/x86/entry/common.c:159
 prepare_exit_to_usermode+0x18e/0x1f0 arch/x86/entry/common.c:194
 syscall_return_slowpath arch/x86/entry/common.c:274 [inline]
 do_syscall_64+0x13e/0x170 arch/x86/entry/common.c:300
 entry_SYSCALL_64_after_hwframe+0x5c/0xc1
RIP: 0033:0x7f79d4987225
Code: Bad RIP value.
RSP: 002b:00007ffc1ca379c0 EFLAGS: 00000293 ORIG_RAX: 00000000000000e6
RAX: 0000000000000000 RBX: 00007f79d4b7bfa0 RCX: 00007f79d4987225
RDX: 00007ffc1ca37a00 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 00007f79d4b7dba0 R08: 0000000000000000 R09: 00007ffc1caf50b0
R10: 0000000000000000 R11: 0000000000000293 R12: 00000000000b5c27
R13: 00007f79d4b7c160 R14: ffffffffffffffff R15: 00007ffc1ca37b40
Modules linked in:
---[ end trace 526a8595d3ec90d3 ]---
RIP: 0010:ext4_writepages+0x2f83/0x2fb0 fs/ext4/inode.c:2843
Code: 0f 94 c6 bf 02 00 00 00 e8 6a 29 a1 ff 84 db 75 2e e8 11 27 a1 ff 49 bc 00 00 00 00 00 fc ff df e9 47 f9 ff ff e8 fd 26 a1 ff <0f> 0b e8 f6 26 a1 ff 0f 0b e8 ef 26 a1 ff e8 ba ef 41 ff eb 9b e8
RSP: 0018:ffff8881c6ea7300 EFLAGS: 00010293
RAX: ffffffff81be57e3 RBX: 0000011410000000 RCX: ffff8881dc129f80
RDX: 0000000000000000 RSI: 0000010000000000 RDI: 0000000000000000
RBP: ffff8881c6ea7650 R08: dffffc0000000000 R09: ffffed1038e3029f
R10: ffffed1038e3029f R11: 1ffff11038e3029e R12: dffffc0000000000
R13: ffff8881c6ea77c0 R14: 0000010000000000 R15: ffff8881c71815c8
FS:  000055558d2a4500(0000) GS:ffff8881f6f00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fb13c6f5fe0 CR3: 00000001de1ce000 CR4: 00000000003406a0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400