Warning: Permanently added '10.128.0.193' (ED25519) to the list of known hosts. executing program [ 32.907368][ T4318] loop0: detected capacity change from 0 to 32768 [ 32.919944][ T4318] ERROR: (device loop0): dtSearch: stack overrun! [ 32.919944][ T4318] [ 32.921535][ T4318] ERROR: (device loop0): remounting filesystem as read-only [ 32.922589][ T4318] btstack dump: [ 32.923108][ T4318] bn = 0, index = 0 [ 32.923659][ T4318] bn = 72c, index = 96 [ 32.924248][ T4318] bn = 0, index = 0 [ 32.924810][ T4318] bn = 72c, index = 96 [ 32.925398][ T4318] bn = 0, index = 0 [ 32.925955][ T4318] bn = 72c, index = 96 [ 32.926551][ T4318] bn = 0, index = 0 [ 32.927073][ T4318] bn = 0, index = 0 [ 32.932262][ T93] BUG: Bad page state in process jfsCommit pfn:11f158 [ 32.933317][ T93] page:00000000739a79ea refcount:0 mapcount:0 mapping:0000000000000000 index:0x72c pfn:0x11f158 [ 32.934855][ T93] flags: 0x5ffc60000002047(locked|referenced|uptodate|workingset|private|node=0|zone=2|lastcpupid=0x7ff) [ 32.936515][ T93] raw: 05ffc60000002047 dead000000000100 dead000000000122 0000000000000000 [ 32.937777][ T93] raw: 000000000000072c ffff0000ce31dba0 00000000ffffffff 0000000000000000 [ 32.940884][ T93] page dumped because: PAGE_FLAGS_CHECK_AT_FREE flag(s) set [ 32.942012][ T93] Modules linked in: [ 32.942638][ T93] CPU: 1 PID: 93 Comm: jfsCommit Not tainted syzkaller #0 [ 32.943714][ T93] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/03/2025 [ 32.945204][ T93] Call trace: [ 32.945696][ T93] dump_backtrace+0x1c0/0x1ec [ 32.946415][ T93] show_stack+0x2c/0x3c [ 32.947037][ T93] __dump_stack+0x30/0x40 [ 32.947702][ T93] dump_stack_lvl+0xf4/0x15c [ 32.948424][ T93] dump_stack+0x1c/0x5c [ 32.949086][ T93] bad_page+0x188/0x1a8 [ 32.949747][ T93] free_page_is_bad_report+0xf8/0x170 [ 32.950584][ T93] free_unref_page_prepare+0x620/0xaf0 [ 32.951451][ T93] free_unref_page+0x7c/0x3a0 [ 32.952194][ T93] __folio_put+0xd0/0x128 [ 32.952893][ T93] _metapage_homeok+0x130/0x214 [ 32.953665][ T93] txUnlock+0x220/0xb78 [ 32.954328][ T93] jfs_lazycommit+0x440/0x908 [ 32.955080][ T93] kthread+0x250/0x2d8 [ 32.955732][ T93] ret_from_fork+0x10/0x20 [ 32.956608][ T93] Disabling lock debugging due to kernel taint [ 32.957831][ T93] page:00000000739a79ea refcount:0 mapcount:0 mapping:0000000000000000 index:0x72c pfn:0x11f158 [ 32.960246][ T93] flags: 0x5ffc60000002047(locked|referenced|uptodate|workingset|private|node=0|zone=2|lastcpupid=0x7ff) [ 32.961907][ T93] raw: 05ffc60000002047 dead000000000100 dead000000000122 0000000000000000 [ 32.963239][ T93] raw: 000000000000072c ffff0000ce31dba0 00000000ffffffff 0000000000000000 [ 32.964539][ T93] page dumped because: VM_BUG_ON_FOLIO(((unsigned int) folio_ref_count(folio) + 127u <= 127u)) [ 32.966182][ T93] ------------[ cut here ]------------ [ 32.966999][ T93] kernel BUG at include/linux/mm.h:1146! [ 32.967856][ T93] Internal error: Oops - BUG: 00000000f2000800 [#1] PREEMPT SMP [ 32.969010][ T93] Modules linked in: [ 32.969614][ T93] CPU: 1 PID: 93 Comm: jfsCommit Tainted: G B syzkaller #0 [ 32.970858][ T93] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/03/2025 [ 32.972319][ T93] pstate: 82400005 (Nzcv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--) [ 32.973488][ T93] pc : put_metapage+0x278/0x2bc [ 32.974207][ T93] lr : put_metapage+0x278/0x2bc [ 32.974934][ T93] sp : ffff800020527c00 [ 32.975542][ T93] x29: ffff800020527c00 x28: ffff80001c5ac138 x27: 1fffe00019c63b79 [ 32.976716][ T93] x26: 1fffe00019c63b86 x25: dfff800000000000 x24: 000000000000007f [ 32.977931][ T93] x23: fffffc00037c5634 x22: fffffc00037c5600 x21: ffff0000ce31dbc8 [ 32.979096][ T93] x20: ffff0000ce31dc30 x19: ffff0000ce31dba0 x18: ffff800011b7bf60 [ 32.980293][ T93] x17: 635f6665725f6f69 x16: ffff800008042fdc x15: 0000000000000000 [ 32.981463][ T93] x14: 0000000000000001 x13: 1fffe00033eaeda3 x12: 0000000000ff0100 [ 32.982644][ T93] x11: ff008000087bbb44 x10: 0000000000000000 x9 : ffff8000087bbb44 [ 32.983836][ T93] x8 : ffff0000c7d98000 x7 : 0000000000000001 x6 : 0000000000000001 [ 32.985031][ T93] x5 : ffff800020527638 x4 : ffff8000152e4cc0 x3 : ffff800008538160 [ 32.986220][ T93] x2 : 0000000000000001 x1 : 0000000100000000 x0 : 000000000000005c [ 32.987389][ T93] Call trace: [ 32.987850][ T93] put_metapage+0x278/0x2bc [ 32.988535][ T93] txUnlock+0x398/0xb78 [ 32.989153][ T93] jfs_lazycommit+0x440/0x908 [ 32.989850][ T93] kthread+0x250/0x2d8 [ 32.990459][ T93] ret_from_fork+0x10/0x20 [ 32.991121][ T93] Code: 900431e1 91130021 aa1603e0 97bc0d7b (d4210000) [ 32.992138][ T93] ---[ end trace 0000000000000000 ]--- [ 33.166172][ T93] Kernel panic - not syncing: Oops - BUG: Fatal exception [ 33.167258][ T93] SMP: stopping secondary CPUs [ 33.168049][ T93] Kernel Offset: disabled [ 33.168679][ T93] CPU features: 0x080000,000f0097,a65bfea7 [ 33.169610][ T93] Memory Limit: none [ 33.334363][ T93] Rebooting in 86400 seconds..