------------[ cut here ]------------ WARNING: CPU: 1 PID: 9424 at include/linux/fs.h:525 i_mmap_assert_write_locked include/linux/fs.h:525 [inline] WARNING: CPU: 1 PID: 9424 at include/linux/fs.h:525 i_mmap_assert_write_locked include/linux/fs.h:523 [inline] WARNING: CPU: 1 PID: 9424 at include/linux/fs.h:525 hugetlb_split+0x320/0xc50 mm/hugetlb.c:3716 Modules linked in: CPU: 1 PID: 9424 Comm: syz-executor.5 Not tainted 5.10.239 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 RIP: 0010:i_mmap_assert_write_locked include/linux/fs.h:525 [inline] RIP: 0010:i_mmap_assert_write_locked include/linux/fs.h:523 [inline] RIP: 0010:hugetlb_split+0x320/0xc50 mm/hugetlb.c:3716 Code: 00 00 31 f6 48 81 c7 e0 00 00 00 e8 4a cb 7c 02 31 ff 41 89 c6 89 c6 e8 3e d9 d5 ff 45 85 f6 0f 85 5e fe ff ff e8 e0 df d5 ff <0f> 0b e9 52 fe ff ff e8 d4 df d5 ff 48 8d 43 50 48 89 c2 48 89 44 RSP: 0018:ffff888038fe7ad8 EFLAGS: 00010212 RAX: 0000000000000133 RBX: ffff88803aec6e00 RCX: ffffc900025fa000 RDX: 0000000000040000 RSI: ffffffff816af0e0 RDI: 0000000000000005 RBP: 0000000020800000 R08: 0000000000000000 R09: ffff88801592f0bf R10: 0000000000000000 R11: 0000000000000001 R12: 1ffff110071fcf64 R13: ffffffff856799bc R14: 0000000000000000 R15: 0000000000000001 FS: 00007f3da71c8700(0000) GS:ffff88806cf00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b2cd25000 CR3: 000000004a45a000 CR4: 0000000000350ee0 Call Trace: __vma_adjust+0xbe8/0x2510 mm/mmap.c:841 vma_adjust include/linux/mm.h:2537 [inline] __split_vma+0x41a/0x4e0 mm/mmap.c:2778 split_vma+0x99/0xe0 mm/mmap.c:2809 mprotect_fixup+0x669/0x8c0 mm/mprotect.c:467 do_mprotect_pkey+0x518/0x940 mm/mprotect.c:619 __do_sys_pkey_mprotect mm/mprotect.c:652 [inline] __se_sys_pkey_mprotect mm/mprotect.c:649 [inline] __x64_sys_pkey_mprotect+0x93/0x100 mm/mprotect.c:649 do_syscall_64+0x33/0x40 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x67/0xd1 RIP: 0033:0x7f3da9c52b19 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 bc ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f3da71c8188 EFLAGS: 00000246 ORIG_RAX: 0000000000000149 RAX: ffffffffffffffda RBX: 00007f3da9d65f60 RCX: 00007f3da9c52b19 RDX: 0000000000000000 RSI: 0000000000800000 RDI: 0000000020800000 RBP: 00007f3da9cacf6d R08: 0000000000000000 R09: 0000000000000000 R10: ffffffffffffffff R11: 0000000000000246 R12: 0000000000000000 R13: 00007fffb940beaf R14: 00007f3da71c8300 R15: 0000000000022000 irq event stamp: 759 hardirqs last enabled at (769): [] console_unlock+0x92d/0xb40 kernel/printk/printk.c:2567 hardirqs last disabled at (778): [] console_unlock+0x839/0xb40 kernel/printk/printk.c:2482 softirqs last enabled at (316): [] asm_call_irq_on_stack+0x12/0x20 softirqs last disabled at (245): [] asm_call_irq_on_stack+0x12/0x20 ---[ end trace c828c8ab5ac76680 ]--- ------------[ cut here ]------------ WARNING: CPU: 1 PID: 9424 at include/linux/fs.h:525 i_mmap_assert_write_locked include/linux/fs.h:525 [inline] WARNING: CPU: 1 PID: 9424 at include/linux/fs.h:525 i_mmap_assert_write_locked include/linux/fs.h:523 [inline] WARNING: CPU: 1 PID: 9424 at include/linux/fs.h:525 hugetlb_split+0x320/0xc50 mm/hugetlb.c:3716 Modules linked in: CPU: 1 PID: 9424 Comm: syz-executor.5 Tainted: G W 5.10.239 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 RIP: 0010:i_mmap_assert_write_locked include/linux/fs.h:525 [inline] RIP: 0010:i_mmap_assert_write_locked include/linux/fs.h:523 [inline] RIP: 0010:hugetlb_split+0x320/0xc50 mm/hugetlb.c:3716 Code: 00 00 31 f6 48 81 c7 e0 00 00 00 e8 4a cb 7c 02 31 ff 41 89 c6 89 c6 e8 3e d9 d5 ff 45 85 f6 0f 85 5e fe ff ff e8 e0 df d5 ff <0f> 0b e9 52 fe ff ff e8 d4 df d5 ff 48 8d 43 50 48 89 c2 48 89 44 RSP: 0018:ffff888038fe7ad8 EFLAGS: 00010212 RAX: 000000000001af3e RBX: ffff88803aec6e00 RCX: ffffc900025fa000 RDX: 0000000000040000 RSI: ffffffff816af0e0 RDI: 0000000000000005 RBP: 0000000020c00000 R08: 0000000000000000 R09: ffff88801592f0bf R10: 0000000000000000 R11: 0000000000000001 R12: 1ffff110071fcf64 R13: ffffffff856799bc R14: 0000000000000000 R15: 0000000000000003 FS: 00007f3da71c8700(0000) GS:ffff88806cf00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b2cd25000 CR3: 000000004a45a000 CR4: 0000000000350ee0 Call Trace: __vma_adjust+0xbf3/0x2510 mm/mmap.c:842 vma_adjust include/linux/mm.h:2537 [inline] __split_vma+0x41a/0x4e0 mm/mmap.c:2778 split_vma+0x99/0xe0 mm/mmap.c:2809 mprotect_fixup+0x669/0x8c0 mm/mprotect.c:467 do_mprotect_pkey+0x518/0x940 mm/mprotect.c:619 __do_sys_pkey_mprotect mm/mprotect.c:652 [inline] __se_sys_pkey_mprotect mm/mprotect.c:649 [inline] __x64_sys_pkey_mprotect+0x93/0x100 mm/mprotect.c:649 do_syscall_64+0x33/0x40 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x67/0xd1 RIP: 0033:0x7f3da9c52b19 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 bc ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f3da71c8188 EFLAGS: 00000246 ORIG_RAX: 0000000000000149 RAX: ffffffffffffffda RBX: 00007f3da9d65f60 RCX: 00007f3da9c52b19 RDX: 0000000000000000 RSI: 0000000000800000 RDI: 0000000020800000 RBP: 00007f3da9cacf6d R08: 0000000000000000 R09: 0000000000000000 R10: ffffffffffffffff R11: 0000000000000246 R12: 0000000000000000 R13: 00007fffb940beaf R14: 00007f3da71c8300 R15: 0000000000022000 irq event stamp: 1249 hardirqs last enabled at (1259): [] console_unlock+0x92d/0xb40 kernel/printk/printk.c:2567 hardirqs last disabled at (1268): [] console_unlock+0x839/0xb40 kernel/printk/printk.c:2482 softirqs last enabled at (316): [] asm_call_irq_on_stack+0x12/0x20 softirqs last disabled at (245): [] asm_call_irq_on_stack+0x12/0x20 ---[ end trace c828c8ab5ac76681 ]--- FAULT_INJECTION: forcing a failure. name failslab, interval 1, probability 0, space 0, times 0 CPU: 1 PID: 9441 Comm: syz-executor.6 Tainted: G W 5.10.239 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x107/0x167 lib/dump_stack.c:118 fail_dump lib/fault-inject.c:52 [inline] should_fail.cold+0x5/0xa lib/fault-inject.c:146 should_failslab+0x5/0x20 mm/slab_common.c:1200 slab_pre_alloc_hook mm/slab.h:515 [inline] slab_alloc_node mm/slub.c:2821 [inline] slab_alloc mm/slub.c:2904 [inline] kmem_cache_alloc+0x5b/0x310 mm/slub.c:2909 radix_tree_node_alloc.constprop.0+0x1e3/0x300 lib/radix-tree.c:251 idr_get_free+0x4b5/0x8f0 lib/radix-tree.c:1503 idr_alloc_u32+0x170/0x2d0 lib/idr.c:46 idr_alloc_cyclic+0x102/0x230 lib/idr.c:125 __kernfs_new_node+0x117/0x860 fs/kernfs/dir.c:641 kernfs_new_node+0x18d/0x250 fs/kernfs/dir.c:711 kernfs_create_dir_ns+0x49/0x160 fs/kernfs/dir.c:1047 internal_create_group+0x793/0xb30 fs/sysfs/group.c:137 loop_sysfs_init drivers/block/loop.c:849 [inline] loop_configure+0x953/0x1410 drivers/block/loop.c:1155 lo_ioctl+0xa57/0x16b0 drivers/block/loop.c:1683 __blkdev_driver_ioctl block/ioctl.c:240 [inline] blkdev_ioctl+0x291/0x710 block/ioctl.c:640 block_ioctl+0xf9/0x140 fs/block_dev.c:1893 vfs_ioctl fs/ioctl.c:48 [inline] __do_sys_ioctl fs/ioctl.c:753 [inline] __se_sys_ioctl fs/ioctl.c:739 [inline] __x64_sys_ioctl+0x19a/0x210 fs/ioctl.c:739 do_syscall_64+0x33/0x40 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x67/0xd1 RIP: 0033:0x7f860fe138d7 Code: 3c 1c 48 f7 d8 49 39 c4 72 b8 e8 a4 54 02 00 85 c0 78 bd 48 83 c4 08 4c 89 e0 5b 41 5c c3 0f 1f 44 00 00 b8 10 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 bc ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f860d388f48 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007f860fe5d970 RCX: 00007f860fe138d7 RDX: 0000000000000004 RSI: 0000000000004c00 RDI: 0000000000000005 RBP: 0000000000000005 R08: 0000000000000000 R09: ffffffffffffffff R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000004 R13: 0000000000000004 R14: 0000000020000218 R15: 0000000000000001 loop6: detected capacity change from 0 to 2048 EXT4-fs (loop6): mounting ext2 file system using the ext4 subsystem EXT4-fs (loop6): bad geometry: block count 128 exceeds size of device (1 blocks) ------------[ cut here ]------------ WARNING: CPU: 1 PID: 9454 at include/linux/fs.h:525 i_mmap_assert_write_locked include/linux/fs.h:525 [inline] WARNING: CPU: 1 PID: 9454 at include/linux/fs.h:525 i_mmap_assert_write_locked include/linux/fs.h:523 [inline] WARNING: CPU: 1 PID: 9454 at include/linux/fs.h:525 hugetlb_split+0x320/0xc50 mm/hugetlb.c:3716 Modules linked in: CPU: 1 PID: 9454 Comm: syz-executor.5 Tainted: G W 5.10.239 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 RIP: 0010:i_mmap_assert_write_locked include/linux/fs.h:525 [inline] RIP: 0010:i_mmap_assert_write_locked include/linux/fs.h:523 [inline] RIP: 0010:hugetlb_split+0x320/0xc50 mm/hugetlb.c:3716 Code: 00 00 31 f6 48 81 c7 e0 00 00 00 e8 4a cb 7c 02 31 ff 41 89 c6 89 c6 e8 3e d9 d5 ff 45 85 f6 0f 85 5e fe ff ff e8 e0 df d5 ff <0f> 0b e9 52 fe ff ff e8 d4 df d5 ff 48 8d 43 50 48 89 c2 48 89 44 RSP: 0018:ffff88803caffad8 EFLAGS: 00010216 RAX: 00000000000000ef RBX: ffff88801e030100 RCX: ffffc900025fa000 RDX: 0000000000040000 RSI: ffffffff816af0e0 RDI: 0000000000000005 FAULT_INJECTION: forcing a failure. name failslab, interval 1, probability 0, space 0, times 0 RBP: 0000000020800000 R08: 0000000000000000 R09: ffff88801592b1bf CPU: 0 PID: 9456 Comm: syz-executor.6 Tainted: G W 5.10.239 #1 R10: 0000000000000000 R11: 0000000000000001 R12: 1ffff1100795ff64 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x107/0x167 lib/dump_stack.c:118 fail_dump lib/fault-inject.c:52 [inline] should_fail.cold+0x5/0xa lib/fault-inject.c:146 R13: ffffffff856799bc R14: 0000000000000000 R15: 0000000000000001 should_failslab+0x5/0x20 mm/slab_common.c:1200 slab_pre_alloc_hook mm/slab.h:515 [inline] slab_alloc_node mm/slub.c:2821 [inline] slab_alloc mm/slub.c:2904 [inline] kmem_cache_alloc+0x5b/0x310 mm/slub.c:2909 FS: 00007f3da71c8700(0000) GS:ffff88806cf00000(0000) knlGS:0000000000000000 mem_pool_alloc mm/kmemleak.c:423 [inline] create_object.isra.0+0x3a/0xa20 mm/kmemleak.c:578 kmemleak_alloc_recursive include/linux/kmemleak.h:43 [inline] slab_post_alloc_hook mm/slab.h:534 [inline] slab_alloc_node mm/slub.c:2896 [inline] slab_alloc mm/slub.c:2904 [inline] kmem_cache_alloc+0x159/0x310 mm/slub.c:2909 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 radix_tree_node_alloc.constprop.0+0x1e3/0x300 lib/radix-tree.c:251 idr_get_free+0x4b5/0x8f0 lib/radix-tree.c:1503 CR2: 0000001b2d023000 CR3: 000000001b4de000 CR4: 0000000000350ee0 idr_alloc_u32+0x170/0x2d0 lib/idr.c:46 Call Trace: idr_alloc_cyclic+0x102/0x230 lib/idr.c:125 __vma_adjust+0xbe8/0x2510 mm/mmap.c:841 __kernfs_new_node+0x117/0x860 fs/kernfs/dir.c:641 vma_adjust include/linux/mm.h:2537 [inline] __split_vma+0x41a/0x4e0 mm/mmap.c:2778 kernfs_new_node+0x18d/0x250 fs/kernfs/dir.c:711 split_vma+0x99/0xe0 mm/mmap.c:2809 kernfs_create_dir_ns+0x49/0x160 fs/kernfs/dir.c:1047 internal_create_group+0x793/0xb30 fs/sysfs/group.c:137 mprotect_fixup+0x669/0x8c0 mm/mprotect.c:467 loop_sysfs_init drivers/block/loop.c:849 [inline] loop_configure+0x953/0x1410 drivers/block/loop.c:1155 lo_ioctl+0xa57/0x16b0 drivers/block/loop.c:1683 do_mprotect_pkey+0x518/0x940 mm/mprotect.c:619 __do_sys_pkey_mprotect mm/mprotect.c:652 [inline] __se_sys_pkey_mprotect mm/mprotect.c:649 [inline] __x64_sys_pkey_mprotect+0x93/0x100 mm/mprotect.c:649 do_syscall_64+0x33/0x40 arch/x86/entry/common.c:46 __blkdev_driver_ioctl block/ioctl.c:240 [inline] blkdev_ioctl+0x291/0x710 block/ioctl.c:640 entry_SYSCALL_64_after_hwframe+0x67/0xd1 RIP: 0033:0x7f3da9c52b19 block_ioctl+0xf9/0x140 fs/block_dev.c:1893 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 bc ff ff ff f7 d8 64 89 01 48 vfs_ioctl fs/ioctl.c:48 [inline] __do_sys_ioctl fs/ioctl.c:753 [inline] __se_sys_ioctl fs/ioctl.c:739 [inline] __x64_sys_ioctl+0x19a/0x210 fs/ioctl.c:739 do_syscall_64+0x33/0x40 arch/x86/entry/common.c:46 RSP: 002b:00007f3da71c8188 EFLAGS: 00000246 entry_SYSCALL_64_after_hwframe+0x67/0xd1 RIP: 0033:0x7f860fe138d7 ORIG_RAX: 0000000000000149 Code: 3c 1c 48 f7 d8 49 39 c4 72 b8 e8 a4 54 02 00 85 c0 78 bd 48 83 c4 08 4c 89 e0 5b 41 5c c3 0f 1f 44 00 00 b8 10 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 bc ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f860d388f48 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007f3da9d65f60 RCX: 00007f3da9c52b19 RAX: ffffffffffffffda RBX: 00007f860fe5d970 RCX: 00007f860fe138d7 RDX: 0000000000000004 RSI: 0000000000004c00 RDI: 0000000000000005 RBP: 0000000000000005 R08: 0000000000000000 R09: ffffffffffffffff R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000004 RDX: 0000000000000000 RSI: 0000000000800000 RDI: 0000000020800000 R13: 0000000000000004 R14: 0000000020000218 R15: 0000000000000001 RBP: 00007f3da9cacf6d R08: 0000000000000000 R09: 0000000000000000 loop6: detected capacity change from 0 to 2048 R10: ffffffffffffffff R11: 0000000000000246 R12: 0000000000000000 R13: 00007fffb940beaf R14: 00007f3da71c8300 R15: 0000000000022000 irq event stamp: 1027 hardirqs last enabled at (1037): [] console_unlock+0x92d/0xb40 kernel/printk/printk.c:2567 hardirqs last disabled at (1046): [] console_unlock+0x839/0xb40 kernel/printk/printk.c:2482 softirqs last enabled at (434): [] asm_call_irq_on_stack+0x12/0x20 EXT4-fs (loop6): mounting ext2 file system using the ext4 subsystem EXT4-fs (loop6): bad geometry: block count 128 exceeds size of device (1 blocks) softirqs last disabled at (253): [] asm_call_irq_on_stack+0x12/0x20 ---[ end trace c828c8ab5ac76682 ]--- ------------[ cut here ]------------ WARNING: CPU: 1 PID: 9454 at include/linux/fs.h:525 i_mmap_assert_write_locked include/linux/fs.h:525 [inline] WARNING: CPU: 1 PID: 9454 at include/linux/fs.h:525 i_mmap_assert_write_locked include/linux/fs.h:523 [inline] WARNING: CPU: 1 PID: 9454 at include/linux/fs.h:525 hugetlb_split+0x320/0xc50 mm/hugetlb.c:3716 Modules linked in: CPU: 1 PID: 9454 Comm: syz-executor.5 Tainted: G W 5.10.239 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 RIP: 0010:i_mmap_assert_write_locked include/linux/fs.h:525 [inline] RIP: 0010:i_mmap_assert_write_locked include/linux/fs.h:523 [inline] RIP: 0010:hugetlb_split+0x320/0xc50 mm/hugetlb.c:3716 Code: 00 00 31 f6 48 81 c7 e0 00 00 00 e8 4a cb 7c 02 31 ff 41 89 c6 89 c6 e8 3e d9 d5 ff 45 85 f6 0f 85 5e fe ff ff e8 e0 df d5 ff <0f> 0b e9 52 fe ff ff e8 d4 df d5 ff 48 8d 43 50 48 89 c2 48 89 44 RSP: 0018:ffff88803caffad8 EFLAGS: 00010246 RAX: 0000000000040000 RBX: ffff88801e030100 RCX: ffffc900025fa000 RDX: 0000000000040000 RSI: ffffffff816af0e0 RDI: 0000000000000005 RBP: 0000000020c00000 R08: 0000000000000000 R09: ffff88801592b1bf R10: 0000000000000000 R11: 0000000000000001 R12: 1ffff1100795ff64 R13: ffffffff856799bc R14: 0000000000000000 R15: 0000000000000001 FS: 00007f3da71c8700(0000) GS:ffff88806cf00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b2d023000 CR3: 000000001b4de000 CR4: 0000000000350ee0 Call Trace: __vma_adjust+0xbf3/0x2510 mm/mmap.c:842 vma_adjust include/linux/mm.h:2537 [inline] __split_vma+0x41a/0x4e0 mm/mmap.c:2778 split_vma+0x99/0xe0 mm/mmap.c:2809 mprotect_fixup+0x669/0x8c0 mm/mprotect.c:467 do_mprotect_pkey+0x518/0x940 mm/mprotect.c:619 __do_sys_pkey_mprotect mm/mprotect.c:652 [inline] __se_sys_pkey_mprotect mm/mprotect.c:649 [inline] __x64_sys_pkey_mprotect+0x93/0x100 mm/mprotect.c:649 do_syscall_64+0x33/0x40 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x67/0xd1 RIP: 0033:0x7f3da9c52b19 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 bc ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f3da71c8188 EFLAGS: 00000246 ORIG_RAX: 0000000000000149 RAX: ffffffffffffffda RBX: 00007f3da9d65f60 RCX: 00007f3da9c52b19 RDX: 0000000000000000 RSI: 0000000000800000 RDI: 0000000020800000 RBP: 00007f3da9cacf6d R08: 0000000000000000 R09: 0000000000000000 R10: ffffffffffffffff R11: 0000000000000246 R12: 0000000000000000 R13: 00007fffb940beaf R14: 00007f3da71c8300 R15: 0000000000022000 irq event stamp: 1525 hardirqs last enabled at (1535): [] console_unlock+0x92d/0xb40 kernel/printk/printk.c:2567 hardirqs last disabled at (1544): [] console_unlock+0x839/0xb40 kernel/printk/printk.c:2482 softirqs last enabled at (434): [] asm_call_irq_on_stack+0x12/0x20 softirqs last disabled at (253): [] asm_call_irq_on_stack+0x12/0x20 ---[ end trace c828c8ab5ac76683 ]--- loop7: detected capacity change from 0 to 262144 EXT4-fs (loop7): mounting ext2 file system using the ext4 subsystem EXT4-fs error (device loop7): ext4_ext_check_inode:500: inode #2: comm syz-executor.7: pblk 0 bad header/extent: invalid magic - magic 0, entries 0, max 0(0), depth 0(0) EXT4-fs (loop7): get root inode failed EXT4-fs (loop7): mount failed loop7: detected capacity change from 0 to 262144 EXT4-fs (loop7): mounting ext2 file system using the ext4 subsystem EXT4-fs error (device loop7): ext4_ext_check_inode:500: inode #2: comm syz-executor.7: pblk 0 bad header/extent: invalid magic - magic 0, entries 0, max 0(0), depth 0(0) EXT4-fs (loop7): get root inode failed EXT4-fs (loop7): mount failed ---------------- Code disassembly (best guess), 1 bytes skipped: 0: ff c3 inc %ebx 2: 66 2e 0f 1f 84 00 00 nopw %cs:0x0(%rax,%rax,1) 9: 00 00 00 c: 0f 1f 40 00 nopl 0x0(%rax) 10: 48 89 f8 mov %rdi,%rax 13: 48 89 f7 mov %rsi,%rdi 16: 48 89 d6 mov %rdx,%rsi 19: 48 89 ca mov %rcx,%rdx 1c: 4d 89 c2 mov %r8,%r10 1f: 4d 89 c8 mov %r9,%r8 22: 4c 8b 4c 24 08 mov 0x8(%rsp),%r9 27: 0f 05 syscall * 29: 48 3d 01 f0 ff ff cmp $0xfffffffffffff001,%rax <-- trapping instruction 2f: 73 01 jae 0x32 31: c3 retq 32: 48 c7 c1 bc ff ff ff mov $0xffffffffffffffbc,%rcx 39: f7 d8 neg %eax 3b: 64 89 01 mov %eax,%fs:(%rcx) 3e: 48 rex.W