program: r0 = openat$dm_control(0xffffffffffffff9c, &(0x7f0000005f00), 0x2, 0x0) ioctl$DM_DEV_CREATE(r0, 0xc138fd03, &(0x7f0000006400)={0x4, 0x0, 0x0, 0x138, 0x138, 0x0, 0x0, 0x0, 0x0, 0x0, {0x0, {'syz', 0x0, '2\x00'}}}) ioctl$DM_TABLE_LOAD(r0, 0xc138fd09, &(0x7f0000002a40)={0x4, 0x0, 0x0, 0x1c0, 0x138, 0x1, 0x0, 0x0, 0x0, 0x0, @by_name={0x0, {'syz', 0x0, '2\x00'}}, [@snapshot={0x0, 0x10c0, 0x0, 0x88, 'snapshot-merge\x00', {@ram_num={'1:', 0x0}, 0x20, @ram_num={'1:', 0x1}, 0x20, 'p', 0x20, '8', ' 2 discard_zeroes_cow discard_passdown_origin'}}]}) openat$hwrng(0xffffffffffffff9c, &(0x7f0000000000), 0x240101, 0x0) r1 = socket$nl_netfilter(0x10, 0x3, 0xc) sendmsg$NFT_BATCH(r1, &(0x7f0000000380)={0x0, 0x0, &(0x7f00000003c0)={&(0x7f0000000400)=ANY=[@ANYBLOB="140000001000010000000000000000000000000a20000000000a01010000000000000000010000040900010073797a300000000040000000030a01080000000000000000010000000900030073797a32000000001400048008000240fffffffe08000140000000030900010073797a300000000054000000060a010400000000000000000100000008000b40000000000900010073797a30000000002c0004802800018008000100666962001c00028008000340000000120800024000000003080001400000001114000000110001"], 0xdc}}, 0x0) r2 = socket$kcm(0xa, 0x922000000003, 0x11) sendmsg$kcm(r2, &(0x7f0000000500)={&(0x7f0000000540)=@l2tp6={0xa, 0x0, 0x2940000, @remote, 0x9}, 0x80, 0x0}, 0x30040000) ioctl$DM_VERSION(r0, 0xc138fd00, &(0x7f0000000100)={0x4, 0x0, 0x0, 0x138, 0x138, 0x0, 0x0, 0x88c00}) bpf$OBJ_GET_PROG(0x7, &(0x7f0000000080)=@generic={&(0x7f0000000040)='./file0\x00', 0x0, 0x8}, 0x18) r3 = openat$tun(0xffffffffffffff9c, &(0x7f0000000240), 0x48241, 0x0) ioctl$TUNSETIFF(r3, 0x400454ca, &(0x7f0000000280)={'syzkaller1\x00', 0x6bf1c2d5adba8c32}) r4 = socket$inet6_tcp(0xa, 0x1, 0x0) r5 = dup(r4) ioctl$SIOCSIFHWADDR(r5, 0x8914, &(0x7f00000002c0)={'syzkaller1\x00', @link_local={0x1, 0x80, 0xc2, 0x0, 0x0, 0x2}}) write$tun(r3, &(0x7f0000000300)={@void, @void, @eth={@link_local={0x1, 0x80, 0xc2, 0x0, 0x0, 0x2}, @multicast, @val={@val={0x88a8, 0x6, 0x0, 0x1}, {0x8100, 0x2}}, {@ipv6={0x86dd, @generic={0x6, 0x6, "d7da9d", 0x12, 0x0, 0x0, @dev={0xfe, 0x80, '\x00', 0x6}, @mcast2, {[@fragment={0x32, 0x0, 0xc, 0x1, 0x0, 0x1, 0x66}], "d095aa9c6693e020b1bf"}}}}}}, 0x50) r6 = accept4$alg(r5, 0x0, 0x0, 0x800) recvmsg(r6, &(0x7f0000002a00)={0x0, 0x0, &(0x7f00000028c0)=[{&(0x7f00000005c0)=""/138, 0x8a}, {&(0x7f0000000680)=""/193, 0xc1}, {&(0x7f0000000780)=""/249, 0xf9}, {&(0x7f0000000880)=""/41, 0x29}, {&(0x7f00000008c0)=""/4096, 0x1000}, {&(0x7f00000018c0)=""/4096, 0x1000}], 0x6, &(0x7f0000002940)=""/167, 0xa7}, 0x120) ioctl$FITRIM(r0, 0xc0185879, &(0x7f00000000c0)={0xb, 0x10, 0x100040000}) [ 94.702801][ T4665] Bluetooth: hci0: command tx timeout [ 94.858008][ T5342] Oops: divide error: 0000 [#1] SMP KASAN NOPTI [ 94.860306][ T5342] CPU: 0 UID: 0 PID: 5342 Comm: syz.0.0 Not tainted syzkaller #0 PREEMPT(full) [ 94.863941][ T5342] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 94.868086][ T5342] RIP: 0010:blk_stack_limits+0x1105/0x2d00 [ 94.870563][ T5342] Code: 68 48 4c 89 e8 48 c1 e8 03 0f b6 04 18 84 c0 0f 85 7c 18 00 00 45 8b 65 00 c7 44 24 10 00 00 00 00 eb 5f 48 8b 44 24 48 31 d2 <41> f7 f5 44 01 e9 29 d1 89 c8 31 d2 41 f7 f5 48 8b 44 24 08 4c 8d [ 94.877995][ T5342] RSP: 0018:ffffc9000e7274f8 EFLAGS: 00010246 [ 94.880423][ T5342] RAX: 0000000000000000 RBX: dffffc0000000000 RCX: 0000000000000000 [ 94.883290][ T5342] RDX: 0000000000000000 RSI: 00000000ffffffff RDI: 0000000000000000 [ 94.886315][ T5342] RBP: ffffc9000e727850 R08: ffffc9000e7277e0 R09: 1ffffffff384adbc [ 94.889388][ T5342] R10: dffffc0000000000 R11: ffffffff88b454e0 R12: 00000000ffffffff [ 94.892533][ T5342] R13: 0000000000000000 R14: 1ffff92001ce4f0a R15: ffffc9000e727854 [ 94.895581][ T5342] FS: 00007fb586ef46c0(0000) GS:ffff88808aa04000(0000) knlGS:0000000000000000 [ 94.899073][ T5342] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 94.901785][ T5342] CR2: 00007fb586efd150 CR3: 000000000fda3000 CR4: 0000000000352ef0 [ 94.905052][ T5342] Call Trace: [ 94.906391][ T5342] [ 94.907617][ T5342] dm_calculate_queue_limits+0x70c/0x1510 [ 94.909993][ T5342] ? __pfx_dm_calculate_queue_limits+0x10/0x10 [ 94.912573][ T5342] ? kmem_cache_alloc_noprof+0x151/0x600 [ 94.914903][ T5342] ? kasan_save_free_info+0x40/0x50 [ 94.917093][ T5342] ? __kasan_mempool_poison_object+0x16e/0x1d0 [ 94.919612][ T5342] ? mempool_init_node+0x474/0x510 [ 94.921782][ T5342] ? __pfx_bioset_init+0x10/0x10 [ 94.923830][ T5342] dm_setup_md_queue+0x199/0x4f0 [ 94.925903][ T5342] ? dm_table_complete+0x1d84/0x22d0 [ 94.928081][ T5342] ? __pfx_dm_setup_md_queue+0x10/0x10 [ 94.930157][ T5342] ? __pfx_dm_table_complete+0x10/0x10 [ 94.932258][ T5342] table_load+0x4fd/0x8a0 [ 94.933946][ T5342] ? __pfx_table_load+0x10/0x10 [ 94.935786][ T5342] ? __might_fault+0xaf/0x130 [ 94.937558][ T5342] dm_ctl_ioctl+0x9ec/0xe10 [ 94.939282][ T5342] ? __pfx_table_load+0x10/0x10 [ 94.941139][ T5342] ? __pfx_dm_ctl_ioctl+0x10/0x10 [ 94.943100][ T5342] ? __fget_files+0x2a/0x420 [ 94.944958][ T5342] ? bpf_lsm_file_ioctl+0x9/0x20 [ 94.947015][ T5342] ? __pfx_dm_ctl_ioctl+0x10/0x10 [ 94.949084][ T5342] __se_sys_ioctl+0xfc/0x170 [ 94.951095][ T5342] do_syscall_64+0x166/0x520 [ 94.953173][ T5342] ? trace_irq_disable+0x3b/0x140 [ 94.955328][ T5342] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 94.957770][ T5342] ? clear_bhb_loop+0x70/0xc0 [ 94.959647][ T5342] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 94.962023][ T5342] RIP: 0033:0x7fb585f9f559 [ 94.963810][ T5342] 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 [ 94.971377][ T5342] RSP: 002b:00007fb586ef3fe8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 94.974658][ T5342] RAX: ffffffffffffffda RBX: 00007fb586225fa0 RCX: 00007fb585f9f559 [ 94.977774][ T5342] RDX: 0000200000002a40 RSI: 00000000c138fd09 RDI: 0000000000000003 [ 94.980873][ T5342] RBP: 00007fb586036b20 R08: 0000000000000000 R09: 0000000000000000 [ 94.983986][ T5342] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 94.986982][ T5342] R13: 00007fb586226038 R14: 00007fb586225fa0 R15: 00007ffcee84bbd8 [ 94.989795][ T5342] [ 94.990951][ T5342] Modules linked in: [ 94.993058][ T5342] ---[ end trace 0000000000000000 ]--- [ 95.012966][ T5342] RIP: 0010:blk_stack_limits+0x1105/0x2d00 [ 95.012995][ T5342] Code: 68 48 4c 89 e8 48 c1 e8 03 0f b6 04 18 84 c0 0f 85 7c 18 00 00 45 8b 65 00 c7 44 24 10 00 00 00 00 eb 5f 48 8b 44 24 48 31 d2 <41> f7 f5 44 01 e9 29 d1 89 c8 31 d2 41 f7 f5 48 8b 44 24 08 4c 8d [ 95.013005][ T5342] RSP: 0018:ffffc9000e7274f8 EFLAGS: 00010246 [ 95.013017][ T5342] RAX: 0000000000000000 RBX: dffffc0000000000 RCX: 0000000000000000 [ 95.013025][ T5342] RDX: 0000000000000000 RSI: 00000000ffffffff RDI: 0000000000000000 [ 95.013032][ T5342] RBP: ffffc9000e727850 R08: ffffc9000e7277e0 R09: 1ffffffff384adbc [ 95.013041][ T5342] R10: dffffc0000000000 R11: ffffffff88b454e0 R12: 00000000ffffffff [ 95.013049][ T5342] R13: 0000000000000000 R14: 1ffff92001ce4f0a R15: ffffc9000e727854 [ 95.013057][ T5342] FS: 00007fb586ef46c0(0000) GS:ffff88808aa04000(0000) knlGS:0000000000000000 [ 95.013064][ T5342] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 95.013069][ T5342] CR2: 00007fb586efd150 CR3: 000000000fda3000 CR4: 0000000000352ef0 [ 95.013099][ T5342] Kernel panic - not syncing: Fatal exception [ 95.051952][ T5342] Kernel Offset: disabled [ 95.053462][ T5342] Rebooting in 86400 seconds..