program: r0 = socket$inet_tcp(0x2, 0x1, 0x0) syz_mount_image$vfat(&(0x7f0000000000), &(0x7f0000001240)='./file2\x00', 0x14552, &(0x7f0000000b40)=ANY=[], 0xfb, 0x11ff, &(0x7f0000001280)="$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") r1 = openat(0xffffffffffffff9c, &(0x7f0000000040)='./file1\x00', 0x42, 0x22) pwrite64(r1, &(0x7f0000000140)='2', 0xfdef, 0xfecc) sendfile(0xffffffffffffffff, 0xffffffffffffffff, 0x0, 0xfffe80) ioctl$TUNSETIFF(0xffffffffffffffff, 0x400454ca, 0x0) r2 = creat(&(0x7f0000000380)='./bus\x00', 0x0) io_setup(0x7, &(0x7f0000000e00)=0x0) r4 = socket$xdp(0x2c, 0x3, 0x0) setsockopt$SO_BINDTODEVICE_wg(r4, 0x1, 0x19, &(0x7f0000000100)='wg0\x00', 0x4) bind$xdp(r4, &(0x7f00000001c0)={0x2c, 0x4}, 0x10) mount(&(0x7f0000000280)=@loop={'/dev/loop', 0x0}, &(0x7f0000000680)='./bus\x00', 0x0, 0x5000, 0x0) fsopen(0x0, 0x0) bpf$BPF_PROG_DETACH(0x8, 0x0, 0x10) r5 = open(&(0x7f0000000000)='./bus\x00', 0x0, 0x0) ioctl$LOOP_SET_STATUS64(r5, 0x4c04, &(0x7f00000003c0)={0x0, 0x0, 0x0, 0x1, 0x2, 0x0, 0x0, 0x19, 0xd, "ef359f413bb93852f7d6a4ae6dddfbd1ce5d29c2ee5e5ca9000ff8ee09e737ff0edf110ff4117639c2eb4b78c660e677df701905b9aafab4afaaf755a3f6a004", "036c47c6780800d1cbf7966d61f53dc17769048b0000fd0c000000000000000000000000000000000200000000000000000000000000008000", "f28359738e229a4c66810000000000d300e6d602000000000000000000000001", [0x8]}) io_submit(r3, 0x1, &(0x7f0000000540)=[&(0x7f00000000c0)={0x25, 0xe7030003, 0x2, 0x1, 0x0, r2, &(0x7f0000000080)='$', 0x1, 0x80000, 0x0, 0x0, r5}]) listen(r0, 0x5) r6 = bpf$MAP_CREATE(0x0, &(0x7f0000000740)=ANY=[@ANYBLOB="0f00000004000000040000000400000000000000", @ANYRES32=0x0, @ANYBLOB='\x00'/20, @ANYRES32=0x0, @ANYRES32=0x0, @ANYBLOB="00000000000000000000000000000000000000044cc9f40000000000d57cad66dc53e5fa31dc73f253f91ba96102aab972cde93d4d0fa9b6c27ea6779f9186c348e02005843eea248116a7f6af0f2ae4faef7d5eaa39a49c2329d75147921338fc391701abe34f45712bd05e64372a8b88d617d9bc51d5b0ae282b0b668623587886f0c7f0437be1adad3ee476e8b93bfb77bf00c097d2603cce1a25b62e152a473a47266f19dac1637ca00a307720d47af8"], 0x48) r7 = bpf$PROG_LOAD(0x5, &(0x7f0000000200)={0x10, 0xa, &(0x7f0000000300)=@raw=[@generic={0x7b, 0xa, 0x1, 0xfff8}, @generic={0xb7, 0x2, 0x0, 0x0, 0xa}, @generic={0x85, 0x0, 0x0, 0x0, 0x3e}, @generic={0x79, 0x1, 0xa, 0xfff8}, @map_fd={0x18, 0x2, 0x1, 0x0, r6}, @generic={0xbf, 0x3, 0x2}, @generic={0xb7, 0x4}, @generic={0x85, 0x0, 0x0, 0x0, 0x3f}, @generic={0x95, 0x0, 0x0, 0x4}], &(0x7f0000000400)='GPL\x00', 0x0, 0x0, 0x0, 0x40f00, 0x0, '\x00', 0x0, @sk_msg=0x7, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0}, 0x94) bpf$BPF_PROG_ATTACH(0x8, &(0x7f0000000040)={@map=r6, r7, 0x34, 0x0, r1, @void, @value=0x0}, 0x20) bpf$MAP_UPDATE_ELEM(0x2, &(0x7f0000000600)={r6, &(0x7f0000000640), &(0x7f0000000680)=@tcp=r0}, 0x20) sendto(r0, &(0x7f0000000700)="01", 0x1, 0x0, 0x0, 0x0) [ 94.869029][ T5283] Bluetooth: hci0: command tx timeout [ 95.055452][ T5318] loop0: detected capacity change from 0 to 8192 [ 95.076129][ T5318] ======================================================= [ 95.076129][ T5318] WARNING: The mand mount option has been deprecated and [ 95.076129][ T5318] and is ignored by this kernel. Remove the mand [ 95.076129][ T5318] option from the mount to silence this warning. [ 95.076129][ T5318] ======================================================= [ 95.402349][ T5319] loop0: detected capacity change from 8192 to 0 [ 95.405393][ T5319] Buffer I/O error on dev loop0, logical block 1, lost sync page write [ 95.405513][ T5319] FAT-fs (loop0): FAT read failed (blocknr 1) [ 95.406175][ T5318] ------------[ cut here ]------------ [ 95.406204][ T5318] !buffer_uptodate(bh) [ 95.406229][ T5318] WARNING: fs/buffer.c:991 at mark_buffer_dirty+0x299/0x410, CPU#0: syz.0.0/5318 [ 95.424172][ T5318] Modules linked in: [ 95.425966][ T5318] CPU: 0 UID: 0 PID: 5318 Comm: syz.0.0 Not tainted syzkaller #0 PREEMPT(full) [ 95.431533][ T5318] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 95.435828][ T5318] RIP: 0010:mark_buffer_dirty+0x299/0x410 [ 95.438353][ T5318] Code: 4c 89 f7 e8 89 0c d8 ff 49 8b 3e be 40 00 00 00 5b 41 5c 41 5e 41 5f 5d e9 74 52 fb ff e8 2f a6 66 ff eb 8c e8 28 a6 66 ff 90 <0f> 0b 90 e9 a5 fd ff ff e8 1a a6 66 ff 90 0f 0b 90 e9 cf fd ff ff [ 95.446440][ T5318] RSP: 0018:ffffc9000f4ef2d0 EFLAGS: 00010283 [ 95.449110][ T5318] RAX: ffffffff82611e48 RBX: ffff888042eee380 RCX: 0000000000100000 [ 95.452269][ T5318] RDX: ffffc9000ebd2000 RSI: 000000000000e397 RDI: 000000000000e398 [ 95.455444][ T5318] RBP: dffffc0000000001 R08: ffff888042eee387 R09: 1ffff110085ddc70 [ 95.458707][ T5318] R10: dffffc0000000000 R11: ffffed10085ddc71 R12: ffffffff8c289c20 [ 95.461938][ T5318] R13: ffff88804231c248 R14: dffffc0000000000 R15: ffff88801fc70788 [ 95.465412][ T5318] FS: 00007f4e0ea926c0(0000) GS:ffff88808c2d1000(0000) knlGS:0000000000000000 [ 95.468997][ T5318] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 95.471635][ T5318] CR2: 00007fada4c6ecf0 CR3: 000000001200a000 CR4: 0000000000352ef0 [ 95.474891][ T5318] Call Trace: [ 95.476555][ T5318] [ 95.477831][ T5318] mmb_mark_buffer_dirty+0x2c/0x1f0 [ 95.480260][ T5318] fat_ent_write+0xb8/0x190 [ 95.482207][ T5318] fat_chain_add+0x409/0x8e0 [ 95.484122][ T5318] ? __pfx_fat_chain_add+0x10/0x10 [ 95.486230][ T5318] ? clean_bdev_aliases+0x62e/0x750 [ 95.488580][ T5318] ? fat_bmap+0x487/0x5a0 [ 95.490429][ T5318] fat_get_block+0x768/0xae0 [ 95.492434][ T5318] ? __pfx_fat_get_block+0x10/0x10 [ 95.494588][ T5318] ? do_raw_spin_unlock+0x4d/0x200 [ 95.496848][ T5318] ? _raw_spin_unlock+0x28/0x50 [ 95.499137][ T5318] ? create_empty_buffers+0x460/0x520 [ 95.501416][ T5318] __block_write_begin_int+0x6c2/0x1900 [ 95.503633][ T5318] ? __pfx_fat_get_block+0x10/0x10 [ 95.506189][ T5318] ? __pfx___block_write_begin_int+0x10/0x10 [ 95.509140][ T5318] cont_write_begin+0x71b/0xac0 [ 95.511061][ T5318] ? rcu_is_watching+0x16/0xb0 [ 95.513057][ T5318] ? __pfx_cont_write_begin+0x10/0x10 [ 95.515270][ T5318] ? folio_unlock+0x101/0x160 [ 95.517249][ T5318] fat_write_begin+0x7a/0x150 [ 95.519246][ T5318] ? __pfx_fat_get_block+0x10/0x10 [ 95.521313][ T5318] cont_write_begin+0x2d6/0xac0 [ 95.523324][ T5318] ? __pfx_cont_write_begin+0x10/0x10 [ 95.525638][ T5318] ? reacquire_held_locks+0x117/0x1a0 [ 95.527880][ T5318] ? __mark_inode_dirty+0x705/0x13b0 [ 95.530204][ T5318] fat_write_begin+0x7a/0x150 [ 95.532207][ T5318] ? __pfx_fat_get_block+0x10/0x10 [ 95.534321][ T5318] generic_perform_write+0x2d5/0x8f0 [ 95.536534][ T5318] ? __pfx_generic_perform_write+0x10/0x10 [ 95.538990][ T5318] ? file_update_time_flags+0x3ab/0x440 [ 95.541234][ T5318] ? __generic_file_write_iter+0xf9/0x230 [ 95.543539][ T5318] ? generic_file_write_iter+0x9a/0x330 [ 95.545703][ T5318] generic_file_write_iter+0xae/0x330 [ 95.547786][ T5318] vfs_write+0x612/0xba0 [ 95.549649][ T5318] ? __pfx_vfs_write+0x10/0x10 [ 95.551515][ T5318] ? __fget_files+0x2a/0x420 [ 95.553367][ T5318] __x64_sys_pwrite64+0x196/0x220 [ 95.555461][ T5318] ? __pfx___x64_sys_pwrite64+0x10/0x10 [ 95.557648][ T5318] do_syscall_64+0x166/0x520 [ 95.559472][ T5318] ? trace_irq_disable+0x3b/0x140 [ 95.561457][ T5318] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 95.563841][ T5318] ? clear_bhb_loop+0x70/0xc0 [ 95.565648][ T5318] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 95.568109][ T5318] RIP: 0033:0x7f4e0db9e159 [ 95.569960][ T5318] Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 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 e8 ff ff ff f7 d8 64 89 01 48 [ 95.576817][ T5318] RSP: 002b:00007f4e0ea91fe8 EFLAGS: 00000246 ORIG_RAX: 0000000000000012 [ 95.579699][ T5318] RAX: ffffffffffffffda RBX: 00007f4e0de25fa0 RCX: 00007f4e0db9e159 [ 95.582790][ T5318] RDX: 000000000000fdef RSI: 0000200000000140 RDI: 0000000000000005 [ 95.586102][ T5318] RBP: 00007f4e0dc35024 R08: 0000000000000000 R09: 0000000000000000 [ 95.589274][ T5318] R10: 000000000000fecc R11: 0000000000000246 R12: 0000000000000000 [ 95.592307][ T5318] R13: 00007f4e0de26038 R14: 00007f4e0de25fa0 R15: 00007ffd93f2d258 [ 95.595770][ T5318] [ 95.597046][ T5318] Kernel panic - not syncing: kernel: panic_on_warn set ... [ 95.600016][ T5318] CPU: 0 UID: 0 PID: 5318 Comm: syz.0.0 Not tainted syzkaller #0 PREEMPT(full) [ 95.603503][ T5318] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 95.607449][ T5318] Call Trace: [ 95.608924][ T5318] [ 95.610203][ T5318] vpanic+0x56d/0xa60 [ 95.611888][ T5318] ? __pfx__printk+0x10/0x10 [ 95.613747][ T5318] ? __pfx_vpanic+0x10/0x10 [ 95.615583][ T5318] ? is_bpf_text_address+0x292/0x2b0 [ 95.617633][ T5318] ? is_bpf_text_address+0x26/0x2b0 [ 95.619586][ T5318] panic+0xc5/0xd0 [ 95.621231][ T5318] ? __pfx_panic+0x10/0x10 [ 95.623274][ T5318] __warn+0x315/0x4c0 [ 95.625063][ T5318] ? mark_buffer_dirty+0x299/0x410 [ 95.626930][ T5318] ? mark_buffer_dirty+0x299/0x410 [ 95.628896][ T5318] __report_bug+0x276/0x570 [ 95.630626][ T5318] ? mark_buffer_dirty+0x299/0x410 [ 95.632551][ T5318] ? __pfx___report_bug+0x10/0x10 [ 95.634404][ T5318] ? schedule+0x16e/0x2b0 [ 95.636245][ T5318] ? io_schedule+0x7f/0xd0 [ 95.638069][ T5318] ? mark_buffer_dirty+0x299/0x410 [ 95.640311][ T5318] report_bug+0x16b/0x220 [ 95.642233][ T5318] ? mark_buffer_dirty+0x299/0x410 [ 95.644293][ T5318] ? mark_buffer_dirty+0x29b/0x410 [ 95.646414][ T5318] handle_bug+0x9c/0x200 [ 95.648200][ T5318] exc_invalid_op+0x1a/0x50 [ 95.650182][ T5318] asm_exc_invalid_op+0x1a/0x20 [ 95.652264][ T5318] RIP: 0010:mark_buffer_dirty+0x299/0x410 [ 95.654789][ T5318] Code: 4c 89 f7 e8 89 0c d8 ff 49 8b 3e be 40 00 00 00 5b 41 5c 41 5e 41 5f 5d e9 74 52 fb ff e8 2f a6 66 ff eb 8c e8 28 a6 66 ff 90 <0f> 0b 90 e9 a5 fd ff ff e8 1a a6 66 ff 90 0f 0b 90 e9 cf fd ff ff [ 95.663092][ T5318] RSP: 0018:ffffc9000f4ef2d0 EFLAGS: 00010283 [ 95.665883][ T5318] RAX: ffffffff82611e48 RBX: ffff888042eee380 RCX: 0000000000100000 [ 95.669287][ T5318] RDX: ffffc9000ebd2000 RSI: 000000000000e397 RDI: 000000000000e398 [ 95.672520][ T5318] RBP: dffffc0000000001 R08: ffff888042eee387 R09: 1ffff110085ddc70 [ 95.675637][ T5318] R10: dffffc0000000000 R11: ffffed10085ddc71 R12: ffffffff8c289c20 [ 95.678760][ T5318] R13: ffff88804231c248 R14: dffffc0000000000 R15: ffff88801fc70788 [ 95.681999][ T5318] ? mark_buffer_dirty+0x298/0x410 [ 95.684130][ T5318] mmb_mark_buffer_dirty+0x2c/0x1f0 [ 95.686389][ T5318] fat_ent_write+0xb8/0x190 [ 95.688323][ T5318] fat_chain_add+0x409/0x8e0 [ 95.690345][ T5318] ? __pfx_fat_chain_add+0x10/0x10 [ 95.692432][ T5318] ? clean_bdev_aliases+0x62e/0x750 [ 95.694643][ T5318] ? fat_bmap+0x487/0x5a0 [ 95.696512][ T5318] fat_get_block+0x768/0xae0 [ 95.698438][ T5318] ? __pfx_fat_get_block+0x10/0x10 [ 95.700679][ T5318] ? do_raw_spin_unlock+0x4d/0x200 [ 95.702912][ T5318] ? _raw_spin_unlock+0x28/0x50 [ 95.705057][ T5318] ? create_empty_buffers+0x460/0x520 [ 95.707375][ T5318] __block_write_begin_int+0x6c2/0x1900 [ 95.709855][ T5318] ? __pfx_fat_get_block+0x10/0x10 [ 95.712031][ T5318] ? __pfx___block_write_begin_int+0x10/0x10 [ 95.714679][ T5318] cont_write_begin+0x71b/0xac0 [ 95.716919][ T5318] ? rcu_is_watching+0x16/0xb0 [ 95.719111][ T5318] ? __pfx_cont_write_begin+0x10/0x10 [ 95.721424][ T5318] ? folio_unlock+0x101/0x160 [ 95.723555][ T5318] fat_write_begin+0x7a/0x150 [ 95.725639][ T5318] ? __pfx_fat_get_block+0x10/0x10 [ 95.727880][ T5318] cont_write_begin+0x2d6/0xac0 [ 95.730132][ T5318] ? __pfx_cont_write_begin+0x10/0x10 [ 95.732525][ T5318] ? reacquire_held_locks+0x117/0x1a0 [ 95.734883][ T5318] ? __mark_inode_dirty+0x705/0x13b0 [ 95.737253][ T5318] fat_write_begin+0x7a/0x150 [ 95.739278][ T5318] ? __pfx_fat_get_block+0x10/0x10 [ 95.741457][ T5318] generic_perform_write+0x2d5/0x8f0 [ 95.743667][ T5318] ? __pfx_generic_perform_write+0x10/0x10 [ 95.746181][ T5318] ? file_update_time_flags+0x3ab/0x440 [ 95.748571][ T5318] ? __generic_file_write_iter+0xf9/0x230 [ 95.751012][ T5318] ? generic_file_write_iter+0x9a/0x330 [ 95.753420][ T5318] generic_file_write_iter+0xae/0x330 [ 95.755750][ T5318] vfs_write+0x612/0xba0 [ 95.757594][ T5318] ? __pfx_vfs_write+0x10/0x10 [ 95.759596][ T5318] ? __fget_files+0x2a/0x420 [ 95.761842][ T5318] __x64_sys_pwrite64+0x196/0x220 [ 95.764237][ T5318] ? __pfx___x64_sys_pwrite64+0x10/0x10 [ 95.766880][ T5318] do_syscall_64+0x166/0x520 [ 95.768808][ T5318] ? trace_irq_disable+0x3b/0x140 [ 95.770961][ T5318] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 95.773644][ T5318] ? clear_bhb_loop+0x70/0xc0 [ 95.775737][ T5318] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 95.778310][ T5318] RIP: 0033:0x7f4e0db9e159 [ 95.780372][ T5318] Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 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 e8 ff ff ff f7 d8 64 89 01 48 [ 95.788046][ T5318] RSP: 002b:00007f4e0ea91fe8 EFLAGS: 00000246 ORIG_RAX: 0000000000000012 [ 95.791604][ T5318] RAX: ffffffffffffffda RBX: 00007f4e0de25fa0 RCX: 00007f4e0db9e159 [ 95.794846][ T5318] RDX: 000000000000fdef RSI: 0000200000000140 RDI: 0000000000000005 [ 95.798179][ T5318] RBP: 00007f4e0dc35024 R08: 0000000000000000 R09: 0000000000000000 [ 95.801611][ T5318] R10: 000000000000fecc R11: 0000000000000246 R12: 0000000000000000 [ 95.805001][ T5318] R13: 00007f4e0de26038 R14: 00007f4e0de25fa0 R15: 00007ffd93f2d258 [ 95.808556][ T5318] [ 95.810320][ T5318] Kernel Offset: disabled [ 95.812202][ T5318] Rebooting in 86400 seconds..