./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor1207015333 <...> Warning: Permanently added '10.128.1.35' (ED25519) to the list of known hosts. execve("./syz-executor1207015333", ["./syz-executor1207015333"], 0x7ffe3f770510 /* 10 vars */) = 0 brk(NULL) = 0x55555591d000 brk(0x55555591dd00) = 0x55555591dd00 arch_prctl(ARCH_SET_FS, 0x55555591d380) = 0 set_tid_address(0x55555591d650) = 5218 set_robust_list(0x55555591d660, 24) = 0 rseq(0x55555591dca0, 0x20, 0, 0x53053053) = 0 prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlink("/proc/self/exe", "/root/syz-executor1207015333", 4096) = 28 getrandom("\xfb\x6d\x34\x57\xca\x88\x81\xfe", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x55555591dd00 brk(0x55555593ed00) = 0x55555593ed00 brk(0x55555593f000) = 0x55555593f000 mprotect(0x7fd65de19000, 16384, PROT_READ) = 0 mmap(0x1ffff000, 4096, PROT_NONE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x1ffff000 mmap(0x20000000, 16777216, PROT_READ|PROT_WRITE|PROT_EXEC, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x20000000 mmap(0x21000000, 4096, PROT_NONE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x21000000 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5219 attached [pid 5219] set_robust_list(0x55555591d660, 24 [pid 5218] <... clone resumed>, child_tidptr=0x55555591d650) = 5219 [pid 5219] <... set_robust_list resumed>) = 0 [pid 5219] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5219] setpgid(0, 0) = 0 [pid 5219] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5219] write(3, "1000", 4) = 4 [pid 5219] close(3) = 0 [pid 5219] write(1, "executing program\n", 18executing program ) = 18 [pid 5219] memfd_create("syzkaller", 0) = 3 [pid 5219] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd655800000 [pid 5219] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 4194304) = 4194304 [pid 5219] munmap(0x7fd655800000, 138412032) = 0 [pid 5219] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5219] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5219] close(3) = 0 [pid 5219] close(4) = 0 [pid 5219] mkdir("./file0", 0777) = 0 [ 54.686656][ T5219] loop0: detected capacity change from 0 to 8192 [ 54.734591][ T5219] REISERFS warning: read_super_block: reiserfs filesystem is deprecated and scheduled to be removed from the kernel in 2025 [ 54.747780][ T5219] REISERFS (device loop0): found reiserfs format "3.5" with non-standard journal [ 54.757406][ T5219] REISERFS (device loop0): using ordered data mode [ 54.764002][ T5219] reiserfs: using flush barriers [ 54.770257][ T5219] REISERFS (device loop0): journal params: device ram0, size 127, journal first block 18, max trans len 1024, max batch 900, max commit age 30, max trans age 30 [ 54.786820][ T5219] REISERFS (device loop0): checking transaction log (ram0) [ 54.801816][ T5219] ================================================================== [ 54.809892][ T5219] BUG: KASAN: use-after-free in reiserfs_read_locked_inode+0x20db/0x29b0 [ 54.818319][ T5219] Read of size 4 at addr ffff88807208d000 by task syz-executor120/5219 [ 54.826549][ T5219] [ 54.829639][ T5219] CPU: 0 UID: 0 PID: 5219 Comm: syz-executor120 Not tainted 6.12.0-rc1-syzkaller-00125-g0c559323bbaa #0 [ 54.840725][ T5219] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 [ 54.850770][ T5219] Call Trace: [ 54.854049][ T5219] [ 54.856964][ T5219] dump_stack_lvl+0x241/0x360 [ 54.862070][ T5219] ? __pfx_dump_stack_lvl+0x10/0x10 [ 54.867251][ T5219] ? __pfx__printk+0x10/0x10 [ 54.871826][ T5219] ? _printk+0xd5/0x120 [ 54.875968][ T5219] ? __virt_addr_valid+0x183/0x530 [ 54.881063][ T5219] ? __virt_addr_valid+0x183/0x530 [ 54.886156][ T5219] print_report+0x169/0x550 [ 54.890651][ T5219] ? __virt_addr_valid+0x183/0x530 [ 54.895746][ T5219] ? __virt_addr_valid+0x183/0x530 [ 54.900836][ T5219] ? __virt_addr_valid+0x45f/0x530 [ 54.905933][ T5219] ? __phys_addr+0xba/0x170 [ 54.910430][ T5219] ? reiserfs_read_locked_inode+0x20db/0x29b0 [ 54.916492][ T5219] kasan_report+0x143/0x180 [ 54.920995][ T5219] ? reiserfs_read_locked_inode+0x20db/0x29b0 [ 54.927080][ T5219] reiserfs_read_locked_inode+0x20db/0x29b0 [ 54.932980][ T5219] ? __pfx_reiserfs_read_locked_inode+0x10/0x10 [ 54.939226][ T5219] ? _raw_spin_unlock+0x28/0x50 [ 54.944080][ T5219] ? inode_insert5+0x38e/0x4c0 [ 54.948839][ T5219] ? __pfx_reiserfs_find_actor+0x10/0x10 [ 54.954474][ T5219] reiserfs_fill_super+0x1361/0x2640 [ 54.959760][ T5219] ? __pfx_reiserfs_fill_super+0x10/0x10 [ 54.965388][ T5219] ? do_raw_spin_lock+0x14f/0x370 [ 54.970406][ T5219] ? __pfx_snprintf+0x10/0x10 [ 54.975077][ T5219] ? set_blocksize+0x1f9/0x360 [ 54.979846][ T5219] ? sb_set_blocksize+0x98/0xf0 [ 54.984686][ T5219] ? setup_bdev_super+0x4e6/0x5d0 [ 54.989705][ T5219] mount_bdev+0x20a/0x2d0 [ 54.994028][ T5219] ? __pfx_reiserfs_fill_super+0x10/0x10 [ 54.999651][ T5219] ? __pfx_mount_bdev+0x10/0x10 [ 55.004494][ T5219] ? vfs_parse_fs_string+0x190/0x230 [ 55.009772][ T5219] ? __pfx_vfs_parse_fs_string+0x10/0x10 [ 55.015401][ T5219] legacy_get_tree+0xee/0x190 [ 55.020069][ T5219] ? __pfx_get_super_block+0x10/0x10 [ 55.025346][ T5219] vfs_get_tree+0x90/0x2b0 [ 55.029772][ T5219] do_new_mount+0x2be/0xb40 [ 55.034267][ T5219] ? __pfx_do_new_mount+0x10/0x10 [ 55.039287][ T5219] __se_sys_mount+0x2d6/0x3c0 [ 55.043957][ T5219] ? __pfx___se_sys_mount+0x10/0x10 [ 55.049696][ T5219] ? do_syscall_64+0x100/0x230 [ 55.054453][ T5219] ? __x64_sys_mount+0x20/0xc0 [ 55.059386][ T5219] do_syscall_64+0xf3/0x230 [ 55.063880][ T5219] ? clear_bhb_loop+0x35/0x90 [ 55.068547][ T5219] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 55.074434][ T5219] RIP: 0033:0x7fd65dda6dba [ 55.078934][ T5219] Code: d8 64 89 02 48 c7 c0 ff ff ff ff eb a6 e8 5e 04 00 00 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 55.098533][ T5219] RSP: 002b:00007ffdbf4a45d8 EFLAGS: 00000286 ORIG_RAX: 00000000000000a5 [ 55.106949][ T5219] RAX: ffffffffffffffda RBX: 00007ffdbf4a45f0 RCX: 00007fd65dda6dba [ 55.114913][ T5219] RDX: 0000000020001100 RSI: 0000000020001140 RDI: 00007ffdbf4a45f0 [ 55.122877][ T5219] RBP: 0000000000000004 R08: 00007ffdbf4a4630 R09: 00000000000010e2 [ 55.130840][ T5219] R10: 0000000000000000 R11: 0000000000000286 R12: 0000000000000000 [ 55.138800][ T5219] R13: 00007ffdbf4a4630 R14: 0000000000000003 R15: 0000000000400000 [ 55.146769][ T5219] [ 55.149777][ T5219] [ 55.152093][ T5219] The buggy address belongs to the physical page: [ 55.158495][ T5219] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x7208d [ 55.167248][ T5219] flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff) [ 55.174357][ T5219] raw: 00fff00000000000 ffffea0001c82388 ffff8880b8644af0 0000000000000000 [ 55.183107][ T5219] raw: 0000000000000000 0000000000000000 00000000ffffffff 0000000000000000 [ 55.191675][ T5219] page dumped because: kasan: bad access detected [ 55.198084][ T5219] page_owner tracks the page as freed [ 55.203442][ T5219] page last allocated via order 0, migratetype Movable, gfp_mask 0x8(__GFP_MOVABLE), pid 1, tgid 1 (swapper/0), ts 12457748996, free_ts 13583251976 [ 55.218373][ T5219] post_alloc_hook+0x1f3/0x230 [ 55.223136][ T5219] alloc_contig_range_noprof+0x821/0xe20 [ 55.228787][ T5219] alloc_contig_pages_noprof+0x4b3/0x5c0 [ 55.234438][ T5219] debug_vm_pgtable_alloc_huge_page+0xaf/0x100 [ 55.240611][ T5219] init_args+0x83b/0xb20 [ 55.244866][ T5219] debug_vm_pgtable+0xe0/0x550 [ 55.249632][ T5219] do_one_initcall+0x248/0x880 [ 55.254394][ T5219] do_initcall_level+0x157/0x210 [ 55.259331][ T5219] do_initcalls+0x3f/0x80 [ 55.263658][ T5219] kernel_init_freeable+0x435/0x5d0 [ 55.268853][ T5219] kernel_init+0x1d/0x2b0 [ 55.273177][ T5219] ret_from_fork+0x4b/0x80 [ 55.277593][ T5219] ret_from_fork_asm+0x1a/0x30 [ 55.282364][ T5219] page last free pid 1 tgid 1 stack trace: [ 55.288215][ T5219] free_unref_page+0xcd0/0xf00 [ 55.292971][ T5219] free_contig_range+0x152/0x550 [ 55.297902][ T5219] destroy_args+0x8a/0x840 [ 55.302314][ T5219] debug_vm_pgtable+0x4be/0x550 [ 55.307158][ T5219] do_one_initcall+0x248/0x880 [ 55.311911][ T5219] do_initcall_level+0x157/0x210 [ 55.316841][ T5219] do_initcalls+0x3f/0x80 [ 55.321188][ T5219] kernel_init_freeable+0x435/0x5d0 [ 55.326379][ T5219] kernel_init+0x1d/0x2b0 [ 55.330698][ T5219] ret_from_fork+0x4b/0x80 [ 55.335110][ T5219] ret_from_fork_asm+0x1a/0x30 [ 55.339867][ T5219] [ 55.342180][ T5219] Memory state around the buggy address: [ 55.347795][ T5219] ffff88807208cf00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 55.355844][ T5219] ffff88807208cf80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 55.363916][ T5219] >ffff88807208d000: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 55.371988][ T5219] ^ [ 55.376055][ T5219] ffff88807208d080: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 55.384113][ T5219] ffff88807208d100: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff [ 55.392185][ T5219] ================================================================== [ 55.400665][ T5219] Kernel panic - not syncing: KASAN: panic_on_warn set ... [ 55.407882][ T5219] CPU: 0 UID: 0 PID: 5219 Comm: syz-executor120 Not tainted 6.12.0-rc1-syzkaller-00125-g0c559323bbaa #0 [ 55.419128][ T5219] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 [ 55.429189][ T5219] Call Trace: [ 55.432466][ T5219] [ 55.435393][ T5219] dump_stack_lvl+0x241/0x360 [ 55.440075][ T5219] ? __pfx_dump_stack_lvl+0x10/0x10 [ 55.445352][ T5219] ? __pfx__printk+0x10/0x10 [ 55.449945][ T5219] ? preempt_schedule+0xe1/0xf0 [ 55.454792][ T5219] ? vscnprintf+0x5d/0x90 [ 55.459121][ T5219] panic+0x349/0x880 [ 55.463024][ T5219] ? check_panic_on_warn+0x21/0xb0 [ 55.468128][ T5219] ? __pfx_panic+0x10/0x10 [ 55.472542][ T5219] ? _raw_spin_unlock_irqrestore+0x130/0x140 [ 55.478608][ T5219] ? __pfx__raw_spin_unlock_irqrestore+0x10/0x10 [ 55.484929][ T5219] ? print_report+0x502/0x550 [ 55.489602][ T5219] check_panic_on_warn+0x86/0xb0 [ 55.494554][ T5219] ? reiserfs_read_locked_inode+0x20db/0x29b0 [ 55.500635][ T5219] end_report+0x77/0x160 [ 55.504886][ T5219] kasan_report+0x154/0x180 [ 55.509398][ T5219] ? reiserfs_read_locked_inode+0x20db/0x29b0 [ 55.515464][ T5219] reiserfs_read_locked_inode+0x20db/0x29b0 [ 55.521357][ T5219] ? __pfx_reiserfs_read_locked_inode+0x10/0x10 [ 55.527597][ T5219] ? _raw_spin_unlock+0x28/0x50 [ 55.532445][ T5219] ? inode_insert5+0x38e/0x4c0 [ 55.537199][ T5219] ? __pfx_reiserfs_find_actor+0x10/0x10 [ 55.542827][ T5219] reiserfs_fill_super+0x1361/0x2640 [ 55.548111][ T5219] ? __pfx_reiserfs_fill_super+0x10/0x10 [ 55.553741][ T5219] ? do_raw_spin_lock+0x14f/0x370 [ 55.558763][ T5219] ? __pfx_snprintf+0x10/0x10 [ 55.563431][ T5219] ? set_blocksize+0x1f9/0x360 [ 55.568186][ T5219] ? sb_set_blocksize+0x98/0xf0 [ 55.573031][ T5219] ? setup_bdev_super+0x4e6/0x5d0 [ 55.578061][ T5219] mount_bdev+0x20a/0x2d0 [ 55.582387][ T5219] ? __pfx_reiserfs_fill_super+0x10/0x10 [ 55.588013][ T5219] ? __pfx_mount_bdev+0x10/0x10 [ 55.592858][ T5219] ? vfs_parse_fs_string+0x190/0x230 [ 55.598138][ T5219] ? __pfx_vfs_parse_fs_string+0x10/0x10 [ 55.603770][ T5219] legacy_get_tree+0xee/0x190 [ 55.608443][ T5219] ? __pfx_get_super_block+0x10/0x10 [ 55.613721][ T5219] vfs_get_tree+0x90/0x2b0 [ 55.618132][ T5219] do_new_mount+0x2be/0xb40 [ 55.622639][ T5219] ? __pfx_do_new_mount+0x10/0x10 [ 55.627663][ T5219] __se_sys_mount+0x2d6/0x3c0 [ 55.632335][ T5219] ? __pfx___se_sys_mount+0x10/0x10 [ 55.637531][ T5219] ? do_syscall_64+0x100/0x230 [ 55.642287][ T5219] ? __x64_sys_mount+0x20/0xc0 [ 55.647047][ T5219] do_syscall_64+0xf3/0x230 [ 55.651543][ T5219] ? clear_bhb_loop+0x35/0x90 [ 55.656212][ T5219] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 55.662104][ T5219] RIP: 0033:0x7fd65dda6dba [ 55.666510][ T5219] Code: d8 64 89 02 48 c7 c0 ff ff ff ff eb a6 e8 5e 04 00 00 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 55.686111][ T5219] RSP: 002b:00007ffdbf4a45d8 EFLAGS: 00000286 ORIG_RAX: 00000000000000a5 [ 55.694520][ T5219] RAX: ffffffffffffffda RBX: 00007ffdbf4a45f0 RCX: 00007fd65dda6dba [ 55.702488][ T5219] RDX: 0000000020001100 RSI: 0000000020001140 RDI: 00007ffdbf4a45f0 [ 55.710455][ T5219] RBP: 0000000000000004 R08: 00007ffdbf4a4630 R09: 00000000000010e2 [ 55.718418][ T5219] R10: 0000000000000000 R11: 0000000000000286 R12: 0000000000000000 [ 55.726384][ T5219] R13: 00007ffdbf4a4630 R14: 0000000000000003 R15: 0000000000400000 [ 55.734375][ T5219] [ 55.737483][ T5219] Kernel Offset: disabled [ 55.741795][ T5219] Rebooting in 86400 seconds..